Acessibilidade / Reportar erro

The effect of extreme climatic events on littorinid snails in two estuarine environments, temperate (NW Spain) and tropical (NE Brazil)

ABSTRACT

Extreme weather events (e.g., droughts, excessive precipitation) are expected to increase in frequency and severity in the coming decades due to climate change, causing significant impacts on society and ecosystems. Because these events are rare and complex, they have been studied with manipulative experiments. Littorinidae snails inhabit a complex and variable environment in which they must deal with periodic extreme events and are thus considered excellent ecological models for these studies. Therefore, this study aimed to understand the effects of extreme climatic events on the survival and weight of the species Littorina fabalis and Littorina littorea in Spain and Littoraria angulifera and Littoraria flava in Brazil. Higher mortality rates and greater weight loss were observed in the desiccation resistance treatment compared to the control treatment in both countries. The results showed dependence on the species’ body size. The submergence tolerance treatment indicated that the species from Spain are more susceptible to mortality in response to excessive rainfall and/or coastal flooding. Each species tested for the effect of extreme climatic events using an integrated response strategy with clear latitudinal differences. Understanding the organisms’ responses at different latitudes is essential for conservation biology on a global scale.

Keywords:
Brazil; Climate change; Desiccation; Littoraria ; Littorina ; Spain

INTRODUCTION

The phenomenon of climate change has been considered by scientists as the most serious threat to the planet’s biodiversity (Wernberg et al., 2012Wernberg, T., Smale, D. A. & Thomsen, M. S. 2012. A decade of climate change experiments on marine organisms: procedures, patterns and problems. Global Change Biology , 18, 1491-1498. DOI: https://doi.org/10.1111/j.1365-2486.2012.02656.x
https://doi.org/10.1111/j.1365-2486.2012...
). According to projections, there may be an increase in the global average temperature, an increase in the mean sea level, a decrease in marine pH, leading to ocean acidification, and the incidence of extreme events in the next 100 years, all because of greenhouse gas emissions (Stocker et al., 2013Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V. & Midgley, P. M. (eds.). 2013. Climate Change: The Physical Science Basis. Cambridge, Cambridge University Press.).

An extreme event can be understood as an irregularity or deviation in behavior from an average or habitual pattern (Smith, 2011Smith, M. D. 2011. An ecological perspective on extreme climatic events: a synthetic definition and framework to guide future research. Journal of Ecology, 99, 656-663. DOI: https://doi.org/10.1111/j.1365-2745.2011.01798.x
https://doi.org/10.1111/j.1365-2745.2011...
). Extreme weather events can occur as a reduction in cold days, an increase in the duration of heat waves, and an increase in the frequency of heavy rains or severe droughts, causing significant impacts on society and ecosystems in general (Easterling et al., 2000Easterling, D. R., Meehl, G. A., Parmesan, C., Changnon, S. A., Karl, T. R. & Mearns, L. O. 2000. Climate Extremes: Observations, modeling, and impacts. Science, 289, 2068-2074. https://doi.org/10.1126/science.289.5487.2068
https://doi.org/10.1126/science.289.5487...
; Stocker et al., 2013Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V. & Midgley, P. M. (eds.). 2013. Climate Change: The Physical Science Basis. Cambridge, Cambridge University Press.). As these events are difficult to study due to their rarity and complexity (Smith, 2011Smith, M. D. 2011. An ecological perspective on extreme climatic events: a synthetic definition and framework to guide future research. Journal of Ecology, 99, 656-663. DOI: https://doi.org/10.1111/j.1365-2745.2011.01798.x
https://doi.org/10.1111/j.1365-2745.2011...
), manipulative experiments have been used to test the magnitude and frequency of these events under controlled conditions (Jentsch et al., 2007Jentsch, A., Kreyling, J. & Beierkuhnlein, C. 2007. A new generation of climate-change experiments: Events, not trends. Frontiers in Ecology and the Environment, 5, 365-374. DOI: https://doi.org/10.1890/1540-9295(2007)5[365:ANGOCE]2.0.CO;2
https://doi.org/https://doi.org/10.1890/...
).

By exceeding the adaptive capacity and physiological limits of many animals and plants, extreme climatic events can result in rapid mortality of species or populations (Sergio et al., 2018Sergio, F., Blas, B. & Hiraldo, F. 2018. Animal responses to natural disturbance and climate extremes: a review. Global and Planetary Change, 161, 28-40. DOI: https://doi.org/10.1016/j.gloplacha.2017.10.009
https://doi.org/10.1016/j.gloplacha.2017...
). They also influence community structure, ecosystem function, and ecotone boundaries, as they lead to changes in habitat availability and quality, the intensity and duration of ecological interactions, and a spatial shift in niches and thermal stress (Smith, 2011Smith, M. D. 2011. An ecological perspective on extreme climatic events: a synthetic definition and framework to guide future research. Journal of Ecology, 99, 656-663. DOI: https://doi.org/10.1111/j.1365-2745.2011.01798.x
https://doi.org/10.1111/j.1365-2745.2011...
). Thus, these changes may alter the distribution, development, reproduction, and/or survival of organisms (Scheffers et al., 2014Scheffers B. R., Edwards, D. P., Stephen, A. D., Williams, E. & Evans, T. A. 2014. Microhabitats reduces animal’s exposure to climate extremes. Global Change Biology, 20, 495-503. DOI: https://doi.org/10.1111/gcb.12439
https://doi.org/10.1111/gcb.12439...
; Sergio et al., 2018Sergio, F., Blas, B. & Hiraldo, F. 2018. Animal responses to natural disturbance and climate extremes: a review. Global and Planetary Change, 161, 28-40. DOI: https://doi.org/10.1016/j.gloplacha.2017.10.009
https://doi.org/10.1016/j.gloplacha.2017...
) with potentially devastating effects in estuarine environments (Wetz and Yoskowitz, 2013Wetz, M. S. & Yoskowitz, D. W. 2013. An ‘extreme’ future for estuaries? Effects of extreme climatic events on estuarine water quality and ecology. Marine Pollution Bulletin, 69, 7-18. DOI: https://doi.org/10.1016/j.marpolbul.2013.01.020
https://doi.org/10.1016/j.marpolbul.2013...
; Robins et al., 2016Robins, P. E., Skov, M. W., Lewis, M. J., Gimenez, L., Davies, A. G., Malham, S. K., Neill, S. P., Mcdonald, J. E., Whitton, T. A., Jackson, S. E. & Jago, C. F. 2016. Impact of climate change on UK estuaries: A review of past trends and potential projections. Estuarine, Coastal and Shelf Science, 169, 119-135. DOI: https://doi.org/10.1016/j.ecss.2015.12.016
https://doi.org/10.1016/j.ecss.2015.12.0...
).

Snails of the Littorinidae family are common herbivores in intertidal regions, including estuaries, with an almost pan-global distribution (Mcquaid, 1996aMcquaid, C. D. 1996a. Biology of the gastropod Family Littorinidae: I. Evolutionary aspects. Oceanography andMarine Biology: An Annual Review, 34, 233-262., 1996bMcquaid, C. D. 1996b. Biology of the gastropod Family Littorinidae: II. Role in the ecology of intertidal and shallow marine ecosystems. Oceanography and Marine Biology: An Annual Review, 34, 263-302.; Reid, 1989Reid, D. G. 1989. Comparative morphology, phylogeny and evolution of the gastropod family Littorinidae. Philosophical Transactions of the Royal Society of London, Series B, 324(1220), 1-110. DOI: https://doi.org/10.1098/rstb.1989.0040
https://doi.org/10.1098/rstb.1989.0040...
; Reid et al., 2009Reid, D. G., Dyal, P. & Williams, S. T. 2009. Global diversification of mangrove fauna: a molecular phylogeny of Littoraria (Gastropoda: Littorinidae). Molecular Phylogenetics and Evolution, 55, 185-201. DOI: https://doi.org/10.1016/j.ympev.2009.09.036
https://doi.org/10.1016/j.ympev.2009.09....
; Bosso et al., 2022Bosso, L., Smeraldo, S., Russo, D, Chiusano, M. L., Bertorelle, G., Johanneson, K., Butlin, K., Danovaro, R. & Raffini, F. 2022. The rise and fall of an alien: why the successful colonizer Littorina saxatilis failed to invade the Mediterranean Sea. Biological Invasions, 24, 3169-3187. DOI: https://doi.org/10.1007/s10530-022-02838-y
https://doi.org/10.1007/s10530-022-02838...
). These organisms are most frequently found in the supralittoral zone and inhabit a complex and variable environment in which they must deal with extreme periodic events, experiencing highly variable temperatures within a single tidal cycle (Marshall et al., 2010Marshall D. J., Mcquaid, C. D. & Williams, G. A. 2010. Non-climatic thermal adaptation: Implications for species’ responses to climate warming. Biology Letters, 6, 669-673. DOI: https://doi.org/10.1098/rsbl.2010.0233
https://doi.org/10.1098/rsbl.2010.0233...
, 2013Marshall, D. J., Baharuddin, N. & Mcquaid, C. D. 2013. Behavior moderates climate warming vulnerability in high-rocky-shore snails: interactions of habitat use, energy consumption and environmental temperature. Marine Biology , 160, 2525-2530. DOI: https://doi.org/10.1007/s00227-013-2245-1.
https://doi.org/10.1007/s00227-013-2245-...
) and thus are among the most heat resistant metazoans (Liao et al., 2017Liao M. L., Zhang, S., Zhang, G. Y., Chu, Y. M., Somero, G. N. & Dong, Y. W. 2017. Heat-resistant cytosolic malate dehydrogenases (cMDHs) of thermophilic intertidal snails (genus Echinolittorina): protein underpinnings of tolerance to body temperatures reaching 55°C. Journal of Experimental Biology, 220, 2066-2075. DOI: https://doi.org/10.1242/jeb.156935
https://doi.org/10.1242/jeb.156935...
). Littorinids are considered excellent ecological models for cross-region studies because they are also easily collected, abundant, and widely distributed (Ng et al., 2011Ng, T. P. T., Davies, M. S., Stafford, R. & Williams, G. A. 2011. Mucus trail following a mate-searching strategy in mangrove littorinid snails. Animal Behavior, 82, 459-465. DOI: https://doi.org/10.1111/brv.12023
https://doi.org/10.1111/brv.12023...
; Rolán-Alvarez et al., 2015Rolán-Alvarez, E., Austin, C. J. & Boulding, E. G. 2015. The contribution of the genus Littorina to the field of evolutionary ecology. Oceanography and Marine Biology: An Annual Review, 53, 157-214. DOI: https://doi.org/10.1201/b18733-6.
https://doi.org/10.1201/b18733-6...
; Bosso et al., 2022Bosso, L., Smeraldo, S., Russo, D, Chiusano, M. L., Bertorelle, G., Johanneson, K., Butlin, K., Danovaro, R. & Raffini, F. 2022. The rise and fall of an alien: why the successful colonizer Littorina saxatilis failed to invade the Mediterranean Sea. Biological Invasions, 24, 3169-3187. DOI: https://doi.org/10.1007/s10530-022-02838-y
https://doi.org/10.1007/s10530-022-02838...
).

The snails of the genus Littorina are restricted to the northern hemisphere, and the genus Littoraria is essentially tropical (Reid, 1989Reid, D. G. 1989. Comparative morphology, phylogeny and evolution of the gastropod family Littorinidae. Philosophical Transactions of the Royal Society of London, Series B, 324(1220), 1-110. DOI: https://doi.org/10.1098/rstb.1989.0040
https://doi.org/10.1098/rstb.1989.0040...
; Reid, 1996Reid, D. G. 1996. Systematics and Evolution of Littorina. London, Ray Society.). Recently, there has been an important debate on whether the tropical or temperate species are more vulnerable to climate change, as it holds implications for conservation priorities at a global scale (Vinagre et al., 2015Vinagre, C., Leal, I., Mendonça, V., Madeira, D., Narciso, L., Diniz, M. S. & Flores, A. A. V. 2015. Vulnerability to climate warming and acclimation capacity of tropical and temperate coastal organisms. Ecological Indicators, 62, 317-327. DOI: https://doi.org/10.1016/j.ecolind.2015.11.010
https://doi.org/10.1016/j.ecolind.2015.1...
, 2018Vinagre, C., Leal, I., Mendonça, V., Cereja, R., Abreu-Afonso, F., Dias, R., Mizrahi, D. & Flores, A. A. V. 2018. Ecological traps in shallow coastal waters - Potential effect of heat-waves in tropical and temperate organisms. Plos one, 13, e0192700. DOI: https://doi.org/10.1371/journal.pone.0192700
https://doi.org/10.1371/journal.pone.019...
; Maia and Troncoso, 2022Maia, R. C. & Troncoso, J. S. 2022. Evaluation of the synergistic effects of climate change on estuarine ecosystems at temperate and tropical latitudes using Littorinids (Mollusca: Gastropoda) as indicators. Brazilian Journal of Animal and Environmental Research, 5, 1642-1660.). However, vulnerability will depend on the organisms’ acclimation capacity, which remains largely unknown for most species, especially in the case of extreme climatic events in estuaries (Wetz and Yoskowitz, 2013Wetz, M. S. & Yoskowitz, D. W. 2013. An ‘extreme’ future for estuaries? Effects of extreme climatic events on estuarine water quality and ecology. Marine Pollution Bulletin, 69, 7-18. DOI: https://doi.org/10.1016/j.marpolbul.2013.01.020
https://doi.org/10.1016/j.marpolbul.2013...
).

Thus, we tested the hypothesis that extreme climatic events, such as i) droughts or water scarcity and ii) excessive precipitation or coastal flooding affect the survival and weight of Littorinid gastropods from estuarine environments of different latitudes and that the impacts will be evident sooner in the tropics than in the temperate zone. Hence, this study aimed to evaluate the desiccation resistance and submersion tolerance of Littorina fabalis (W. Turton, 1825) and Littorina littorea (Linnaeus, 1758) from a temperate estuary in Spain, and of Littoraria angulifera (Lamarck, 1822) and Littoraria flava (King & Broderip, 1832) from a tropical estuarine area in Brazil.

METHODS

STUDY AREA

This study was carried out at temperate and tropical climate latitudes (Figure 1). The species Littorina littorea and Littorina fabalis were collected from seaweed meadows in the San Simón Inlet, an estuarine area of the Ría de Vigo (Verdugo-Oitavén River System), in Pontevedra, Galicia, Spain. The species Littoraria angulifera and Littoraria flava were collected in the mangrove of Arpoeiras Beach, in the Acaraú River estuary, Ceará, northeastern Brazil (Figure 2). Both areas hold a semidiurnal tidal cycle.

Figure 1
Map of the study areas (A) indicating the collection sites at Arpoeiras Beach (B), Acaraú, Brazil and at the San Simón Inlet, Vigo, Spain (C).

Figure 2
Littorinidae species over the study in Spain and Brazil. (A) Littorina fabalis, (B) Littorina littorea, (C) Littoraria angulifera, and (D) Littoraria flava.

The estuarine area of the Ría de Vigo holds climatic conditions described as Temperate Oceanic with Mediterranean influence, characterized by a drastic decrease of precipitation during July and August, and homogenous temperatures throughout the area, ranging from 10 °C to 20 °C, with the months of December, January, and February as the coldest (Perez-Arlucea et al., 2005Perez-Arlucea, M., Mendez, G., Clemente, F., Nombela, M., Rubio, B. & Filgueira, M. 2005. Hydrology, sediment yield, erosion and sedimentation rates in the estuarine environment of the Ría de Vigo, Galicia, Spain. Journal of Marine Systems, 369, 79-86. DOI: https://doi.org/10.1016/j.jmarsys.2004.07.013
https://doi.org/10.1016/j.jmarsys.2004.0...
). Seagrass, seaweed, and soft substrates, mainly muddy, with a high organic matter content, predominate in the San Simón Inlet (Cacabelos et al., 2008Cacabelos, E., Gestoso, L. & Troncoso, J. S. 2008. Macrobenthic fauna in the Ensenada de San Simón (Galicia, north-western Spain). Journal of the Marine Biological Association of the United Kingdom, 88, 237-245. DOI: https://doi.org/10.1017/S0025315408000660.
https://doi.org/10.1017/S002531540800066...
).

Due to Spain’s geographic location, the country is very vulnerable to climate change. There will be more extreme events in most regions, with increasing frequency, intensity, and/or amount of heavy precipitation (Stocker et al., 2013Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V. & Midgley, P. M. (eds.). 2013. Climate Change: The Physical Science Basis. Cambridge, Cambridge University Press.).

The Acaraú River originates in the Serra das Matas, in the central-western region of the state of Ceará, in northeastern Brazil. It runs for 315 km in a South-North direction and flows into the Atlantic Ocean in the municipality of Acaraú. According to data obtained by the Cearense Foundation of Meteorology and Water Resources, the region holds a Semi-arid Tropical climate, with an average temperature of 29 °C throughout the year and approximate rainfall of 1,100 mm, with rainfall concentrated from January to June (FUNCEME, 2018FUNCEME (Fundação Cearense De Meteorologia E Recursos Hídricos). 2018. Posto meteorológico de Acaraú. Availablr from: Availablr from: www.funceme.br . Acess date: 2 feb. 2024.
www.funceme.br...
). The Acaraú estuary features a predominance of unconsolidated sedimentary substrates and mangrove forests composed of Rhizophora mangle Linnaeus, 1753, Laguncularia racemosa (Gaertner, 1805), Avicennia germinans (Linnaeus) Stearn 1958, and A. shaueriana Stapft & Leechman (Maia and Coutinho, 2012Maia, R. C. & Coutinho, R. 2012. Structural characteristics of mangrove forest in Brazilian estuaries: A comparative study. Journal of Marine Biology and Oceanography, 47, 87-98.).

The region is also highly vulnerable to extreme events. The scenarios indicate that the Brazilian northeast may suffer a decrease in its water resources with increased precipitation variability and droughts that may result in an increase in the index of consecutive dry days and a decrease in the recharge of groundwater (Stocker et al., 2013Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V. & Midgley, P. M. (eds.). 2013. Climate Change: The Physical Science Basis. Cambridge, Cambridge University Press.).

COLLECTION OF ORGANISMS AND ASSEMBLY OF EXPERIMENTAL UNITS

Sampling was carried out in the spring in both countries (Spain - May/2018 and Brazil - September/2018). All specimens were measured for shell height (distance between the apex and the innermost part of the shell) and shell width (measured perpendicular to the shell height) using a caliper and weighed. Each specimen was labeled for identification at the end of the experiment.

All the experiments were carried out in aquariums (experimental units measuring 43x22x30 cm and with a capacity of 28 liters) (Supplementary Material) in which animals with similar sizes (shell height and live wet weight of the snail) for each species (Littorina fabalis, Littorina littorea, Littoraria angulifera and Littoraria flava) and densities similar to those in the natural environment, calculated from previous observations in the field at each site (NW Spain and NE Brazil) to determinate the sample size in each experimental unit (Table 1).

Table 1
Average shell height (+ SD) (mm), snail alive wet weight (g) and sample size of Littorinids (individuals per experimental unit) from Spain and Brazil submitted to treatments that simulate extreme events.

The temperature in all experiments was kept constant in an isothermal environment, set at 19 C in Spain and 33 °C in Brazil, corresponding to the mean values of water temperature during the three last summer months in Vigo, Spain, and Acaraú, Brazil. The photoperiod was simulated using artificial lighting, used as 16 hours in Spain and 12 hours in Brazil, based on the mean values of natural summer in each country. These data were obtained from the Technologic Institute for the Control of the Marine Environment of Galicia (Intecmat, Rande Oceanographic Station) in Spain and, from the Network of Monitoring for Benthic Coastal Habitats (Rebentos, subgroup estuaries, Acaraú) in Brazil.

Each experiment (desiccation treatment, submergence treatment, and control) was replicated three times. Thus, 36 experimental units were established to simulate extreme events (4 species x 3 treatments x 3 replications). The studies in Spain were carried out at the Marine Science Station (ECIMAT), Marine Sciences Faculty of the University of Vigo, and the Mangrove Ecology Laboratory (ECOMANGUE) of the Federal Institute of Ceará, Acaraú campus, in Brazil.

EFFECT OF DROUGHT AND/OR WATER SCARCITY (DESICCATION TREATMENT)

The desiccation resistance test was performed to verify the effect of drought and/or water shortage. After collection, labeling, measurement, and weighing, each individual was placed in the estuary water for an hour to rehydrate (Britton, 1992Britton, J. C. 1992. Evaporative water loss, behaviour during emersion, and upper thermal tolerance limits in seven species of eulittoral-fringe Littorinidae (Mollusca: Gastropoda). In: International Symposium on Littorinidae Biology (3 ed, pp. 69-83).; Tanaka and Maia, 2006Tanaka, M. O. & Maia, R. C. 2006. Shell Morphological Variation of Littoraria angulifera among and within mangroves in NE Brazil. Hydrobiologia, 559, 193-202.). The specimens were subsequently removed, the excess water dried with a filter paper, and they were placed in the experimental units containing site substrate and abundant feed (≅ 2.8 l of substrate volume) represented by the seaweed Fucus spiralis L. and Ascophyllum nodosum (L.) Le Jolis in Spain, and mangrove leaves of Rhizophora mangle, Avicennia spp., and Laguncularia racemosa in Brazil. Seaweed and mangrove leaves were used because the animals were collected from them. They were not replaced during the experiment and were also subjected to desiccation with the animals.

Throughout the experiment, mortality was observed by the absence of foot retraction or closure of the operculum when the animal was touched. All live individuals were weighed daily. This experiment lasted eight days, a period determined by one species reaching 100% mortality.

EFFECT OF EXCESSIVE PRECIPITATION AND/OR COASTAL FLOODING (SUBMERGENCE TREATMENT)

A submersion tolerance test was carried out to evaluate the effect of excessive precipitation and/or coastal flooding. Each individual was subjected to one hour at room temperature in the dry and then placed in the experimental unit containing water from the region where it was collected (Table 2) to remain completely submerged. The water was renewed every six hours to avoid eutrophication and guarantee oxygen support, and the excreta were removed without the animals being emerged. This experiment lasted four days (96 hours), a period determined by one species reaching 100% mortality, with the snails being monitored to assess survival every six hours (tidal frequencies) (Capaldo, 1983Capaldo, P. S. 1983. Tolerance of the common marsh snail Melampus bidentatus to submersion. Estuaries, 6, 176-177.). The same substrates described in the previous item were used.

Table 2
Values of water temperature, pH, and salinity at the time of sampling in Vigo, Spain (May/2018) and Acaraú, Brazil (September/2018).

CONTROL EXPERIMENT

In the control experiment, the animals were placed in experimental units with a substrate from their original area containing abundant food and the temperature and photoperiod as described above. The tide effect was simulated by irrigation every 12 hours with water from the estuary where the animals were collected (Table 2), ensuring that they were always moist and had access to the substrate to emerge, simulating natural field conditions. Thus, there were two control treatments (Spain and Brazil). This experiment lasted eight days. The snails were monitored to evaluate survival.

DATA ANALYSIS

The effect of resistance to desiccation and submergence tolerance on survival (%) and weight (differences between final and initial values) of littorinids was evaluated using a two-way Analysis of Variance (ANOVA) test among the different species and treatments by study areas (NW Spain and NE Brazil). When significant differences were found at the 5% significance level (p < 0.05), Tukey’s honestly significant difference (HSD) test was used. Percentage data were arcsine square root transformed. The assumptions of homogenous variances and normally distributed residuals were met for all ANOVAs.

RESULTS

EFFECT OF DROUGHT AND/OR WATER SCARCITY (DESICCATION TREATMENT)

SURVIVAL

The survival of Littorinids subjected to the desiccation experiment varied significantly among species and treatments in Spain (F1,8 = 7.4027, p = 0.026) and in Brazil (F1,8 = 54.270, p ˂ 0.00008). The results of the analysis indicated that, under drought conditions and/or water scarcity, the Spanish species L. fabalis has a low survival rate (Figure 3A), with mortality beginning to be observed on the third day (Table 3). The data showed that mortality reached 100% after seven days of exposure. For L. littorea, although this condition was a limiting factor leading to some mortality, desiccation did not strongly reduce survival; a result evidenced by the similar values observed between the treatment and control experiments with this species (Figure 3A, Table 3).

Figure 3
Average survival (± SD) (%) of Littorinidae species in control and desiccation treatments in Spain (A) and Brazil (B). Different letters indicate significant differences according to Tukey’s HSD.

Table 3
Survival (%) of Littorinidae species over the experimental days (1 to 8 days) in the control and desiccation treatments in Spain and Brazil.

The results obtained for the Brazilian species indicated that L. flava has a low survival rate in the desiccation treatment, with mortality observed from the fourth day onwards. By the end of the eighth day, only around 25% of the organisms remained alive (Figure 3B, Table 3). In the control experiment, the final survival rate was 98.67%. L. angulifera showed a similar survival rate between treatment and the control, with only one snail dead at the end of the experiment on the eighth day (Figure 2B). No mortality was observed in the control treatment (Table 3).

WEIGHT

The difference between the initial and final weight of the animals in the desiccation treatment in Spain varied significantly (F1,8 = 343.92, p < 0.000001); in the experimental groups, a marked loss of weight was observed (mean: − 0.043 g for L. fabalis and −0.258 g for L. littorea), whereas a slight increase in both L. fabalis (average: + 0.0067 g) and L. littorea (mean: + 0.0103 g) was observed in the control groups (Figure 4A).

Figure 4
Mean weight difference (final-initial) (± SD) (%) of Littorinidae species between the control and desiccation treatments in Spain (A) and Brazil (B). Different letters indicate significant differences according to Tukey’s HSD.

A similar pattern was observed in the Brazilian species. A significant variation in the initial and final weight difference was observed among the species and treatments tested (F1,8 = 7.7423, p = 0.024). However, the response observed in L. flava between the control (mean: + 0.0086 g) and the desiccation treatment (mean: 0.0067 g) was similar (Figure 3B). The results for L. angulifera showed a significant weight loss in the experimental treatment (mean: − 0.348 g) compared to that observed in the control (mean: − 0.050) (Figure 4B).

EFFECT OF EXCESSIVE PRECIPITATION AND/OR COASTAL FLOODING (SUBMERGENCE TREATMENT)

SURVIVAL

The results of the submergence experiment showed a significant difference in survival between species and treatments in Spain (F1,8= 101.833, p = 0.00001). No survival was observed at the end of the experiment with L. fabalis (Figure 4A) after 90 hours of exposure (Table 4). The vulnerability of this species is also clearly evident when comparing the final results of the submergence and control treatments. The submergence treatment did not produce the same effect on L. littorea because no mortality was observed throughout the experiment, even in the control group (Figure 5A, Table 4).

Table 4
Survival (%) of Littorinidae species in the control and submergence treatments in Spain and Brazil.

Figure 5
Average final survival (± SD) (%) of Littorinidae species in the control and submergence treatments in Spain (A) and Brazil (B). Different letters indicate significant differences according to Tukey’s HSD.

The Brazilian species studied showed no significant differences in the survival of the organisms between the submergence and control treatment (F1,8 = 1.7652, p = 0.22) (Figure 5B). The results expressed in Table 4 indicate the mortality of only one individual of L. flava in the control treatment; despite showing mortality in the experimental treatment after 12 hours from the start, the survival rate was 93.33% at the end of the experiment. The experiment with L. angulifera showed no deaths in the control group and 90% survival in the experimental group; the first deaths occurred at 42 hours of submergence (Table 4).

WEIGHT

No significant differences were observed in the weight of the animals before and after the submergence treatment, either between species or treatments in Spain (F1,8 = 0.58016, p = 0.47) (Figure 6A). However, a significant increase in weight was observed in the Brazilian species L. angulifera (mean: + 0.2353 g) (F1,8 = 6.0557, p = 0.04) during the submergence treatment when compared to the control. The results of this experiment with L. flava showed no weight variation between treatments (Figure 6B)

Figure 6
Mean weight difference (final-initial) (± SD) (%) of Littorinidae species between the control and submergence treatments in Spain (A) and Brazil (B). Different letters indicate significant differences according to Tukey’s HSD.

DISCUSSION

The results obtained in the experiments simulating environmental conditions in extreme climatic events indicate that estuarine Littorinidae species respond to disturbances. The effect of drought or water scarcity may affect species in both Brazil and Spain in the event of extreme environmental conditions. Higher mortality rates and greater weight loss were observed in the desiccation treatment compared to the control treatment in both countries.

Desiccation is considered an important stress factor, limiting the distribution and abundance of many littorinids in the intertidal region (Chapman, 1997Chapman, M. G., 1997. Relationships between shell shape, water reserves, survival and growth of highshore Littorinids under experimental conditions in New South Wales, Australia. Journal of Molluscan Studies, 63, 511-529.; Rolán-Alvarez et al., 2015Rolán-Alvarez, E., Austin, C. J. & Boulding, E. G. 2015. The contribution of the genus Littorina to the field of evolutionary ecology. Oceanography and Marine Biology: An Annual Review, 53, 157-214. DOI: https://doi.org/10.1201/b18733-6.
https://doi.org/10.1201/b18733-6...
; Leeuwis and Gamperl, 2022Leeuwis R., H. J. & Gamperl, A. K. 2022. Adaptations and plastic phenotypic responses of marine animals to the environmental challenges of the high intertidal zone. Oceanography andMarine Biology: An Annual Review, 60, 625-680.). Mortality is one of the most substantial pressures in response to this extreme event, which can remove up to 99% of organisms from a population (Moreno and Møller, 2011Moreno, J. & Møler, A. P. 2011. Extreme climatic events in relation to global change and their impact on life histories. Current Zoology, 57, 375-389. DOI: https://doi.org/10.1093/czoolo/57.3.375
https://doi.org/10.1093/czoolo/57.3.375...
). These data corroborate those obtained in this study, in which, at the end of eight days under a stressful drought condition, all the species tested responded with mortality; L. fabalis showed a 100% mortality rate at the end of the experiment. Similar results were also reported in L. angulifera, with mortality beginning on the third day and few individuals surviving after 15 days without access to water sources under experimental conditions (Tanaka and Maia, 2006Tanaka, M. O. & Maia, R. C. 2006. Shell Morphological Variation of Littoraria angulifera among and within mangroves in NE Brazil. Hydrobiologia, 559, 193-202.).

The data presented in this study also show that littorinids can suffer weight loss when exposed to drought conditions; this effect is probably due to water loss, which accelerates the mortality process. A body reduction of up to 4% caused by water loss in experiments that simulate climate change have been demonstrated in marine invertebrates, affecting weight and survival (Sheridan and Bickford, 2011Sheridan, J. A. & Bickford, D. 2011. Shrinking body size as an ecological response to climate change. Nature climate change, 1, 401-406. DOI: https://doi.org/10.1038/nclimate1259
https://doi.org/10.1038/nclimate1259...
). Seven Littorinidae species were examinated for body water loss during emersion and obtained similar results (Britton,1992Britton, J. C. 1992. Evaporative water loss, behaviour during emersion, and upper thermal tolerance limits in seven species of eulittoral-fringe Littorinidae (Mollusca: Gastropoda). In: International Symposium on Littorinidae Biology (3 ed, pp. 69-83).). Whereas Iacarella and Helmuth (2011Iacarella, J. C. & Helmuth, B. 2011. Experiencing the salt marsh environment through the foot of Littoraria irrorata: Behavioral responses to thermal and desiccation stresses. Journal of Experimental Marine Biology and Ecology, 409, 143-153. DOI: https://doi.org/10.1016/j.jembe.2011.08.011
https://doi.org/10.1016/j.jembe.2011.08....
), in experimental studies, also related greater weight loss with a decrease in internal water reserves for L. irrotata (Say) and Boehs and Freitas (2022Boehs, G. & Freitas, L. A. 2022. Population attributes of Littoraria angulifera (Gastropoda: Littorinidae) in mangroves in Bahia State, northeastern Brazil. Brazilian Journal of Biology, 82, e243114. DOI: https://doi.org/10.1590/1519-6984.243114
https://doi.org/10.1590/1519-6984.243114...
) observed greater protection against desiccation with larger shell sizes of L. angulifera in Brazilian mangroves.

Although this study used individuals of similar body size (Table 1), the Littorinidae species studied obviously have different body sizes. Thus, the desiccation experiment also showed that the snail species with smaller body sizes (L. fabalis and L. flava) lost more weight than the larger species (L. littorea and L. angulifera) and experienced higher mortality rates in both countries. The body size of an animal is a trait that influences fitness, determining its survival ability because the acclimation capacity is better optimized in larger body sizes than in smaller ones (Darnell and Darnell, 2018Darnell, M. Z. & Darnell, K. M. 2018. Geographic variation in thermal tolerance and morphology in a fiddler crab sister-species pair. Marine Biology, 165, 26. DOI: https://doi.org/10.1007/s00227-017-3282-y
https://doi.org/10.1007/s00227-017-3282-...
).

In Littorinidae, the overall larger shells can increase their internal water supply, promoting greater resistance to desiccation (Vermeij, 1972Vermeij, G. J. 1972. Intraspecific shore level size gradients in intertidal mollusks. Ecology, 53, 693-700.; Chapman, 1997Chapman, M. G., 1997. Relationships between shell shape, water reserves, survival and growth of highshore Littorinids under experimental conditions in New South Wales, Australia. Journal of Molluscan Studies, 63, 511-529.; Moutinho and Alves-Costa, 2000Moutinho, P. R. S. & Alves-Costa, C. P. 2000. Shell size variation and aggregation behavior of Littoraria flava (Gastropoda: Littorinidae) on a Southeastern Brazilian shore. Veliger, 43, 277-281.; Tanaka and Maia, 2006Tanaka, M. O. & Maia, R. C. 2006. Shell Morphological Variation of Littoraria angulifera among and within mangroves in NE Brazil. Hydrobiologia, 559, 193-202.; Rolán-Alvarez et al., 2015Rolán-Alvarez, E., Austin, C. J. & Boulding, E. G. 2015. The contribution of the genus Littorina to the field of evolutionary ecology. Oceanography and Marine Biology: An Annual Review, 53, 157-214. DOI: https://doi.org/10.1201/b18733-6.
https://doi.org/10.1201/b18733-6...
). The increase in weight observed in this study in L. angulifera exposed to the submergence treatment corroborates this previous observation, as the animal possibly has a greater internal water storage capacity than the other species tested, resulting in higher survival values when under desiccation conditions.

The results presented here may be more critical for the Brazilian species than for the Spanish species, based on the scenarios mentioned in the Intergovernmental Panel on Climate Change (IPCC) reports, indicating that the Brazilian northeast may suffer a decrease in its water resources, which is not expected in Spain. Tropical species have higher physiological limits when compared to temperate species, but also exhibit low acclimatization response (Vinagre et al., 2015Vinagre, C., Leal, I., Mendonça, V., Madeira, D., Narciso, L., Diniz, M. S. & Flores, A. A. V. 2015. Vulnerability to climate warming and acclimation capacity of tropical and temperate coastal organisms. Ecological Indicators, 62, 317-327. DOI: https://doi.org/10.1016/j.ecolind.2015.11.010
https://doi.org/10.1016/j.ecolind.2015.1...
; Vinagre et al., 2018Vinagre, C., Leal, I., Mendonça, V., Cereja, R., Abreu-Afonso, F., Dias, R., Mizrahi, D. & Flores, A. A. V. 2018. Ecological traps in shallow coastal waters - Potential effect of heat-waves in tropical and temperate organisms. Plos one, 13, e0192700. DOI: https://doi.org/10.1371/journal.pone.0192700
https://doi.org/10.1371/journal.pone.019...
; Maia and Troncoso, 2022Maia, R. C. & Troncoso, J. S. 2022. Evaluation of the synergistic effects of climate change on estuarine ecosystems at temperate and tropical latitudes using Littorinids (Mollusca: Gastropoda) as indicators. Brazilian Journal of Animal and Environmental Research, 5, 1642-1660.). Thus, tropical Littorinidae may be at risk in environments subject to extreme climatic events that cause desiccation stress (Marshall et al., 2018Marshall, D. J., Brahim, A., Mustapha, N., Dong, Y. & Sinclair, B. J. 2018. Substantial heat tolerance acclimation capacity in tropical thermophilic snails, but to what benefit? Journal of Experimental Biology , 221, jeb187476. DOI: https://doi.org/10.1242/jeb.187476
https://doi.org/10.1242/jeb.187476...
; Brahim et al., 2018Brahim, A., Mustapha, N. & Marshall, D. J. 2018. Non-reversible and Reversible Heat Tolerance Plasticity in Tropical Intertidal Animals: Responding to Habitat Temperature Heterogeneity. Frontiers in Physiology, 9, 1-11. DOI: https://doi.org/10.3389/fphys.2018.01909
https://doi.org/10.3389/fphys.2018.01909...
). Differences in shell morphology or size and in survival of littorinids at different latitudes were also observed by Matos et al, (2020Matos, A., Matthews-Cascon, H. & Chaparro, O. 2020. Morphometric analysis of the shell of the intertidal gastropod Echinolittorina lineolata (d’Orbigny, 1840) at different latitudes along the Brazilian coast. Journal of the Marine Biological Association of the United Kingdom , 100, 725-731. DOI: https://doi.org/10.1017/S0025315420000624
https://doi.org/10.1017/S002531542000062...
) for Echinolittorina lineolata (d’Orbigny, 1840) and Bosso et al, (2022Bosso, L., Smeraldo, S., Russo, D, Chiusano, M. L., Bertorelle, G., Johanneson, K., Butlin, K., Danovaro, R. & Raffini, F. 2022. The rise and fall of an alien: why the successful colonizer Littorina saxatilis failed to invade the Mediterranean Sea. Biological Invasions, 24, 3169-3187. DOI: https://doi.org/10.1007/s10530-022-02838-y
https://doi.org/10.1007/s10530-022-02838...
) for L. saxatilis (Olivi, 1792).

According to the data presented here, the effect of excessive precipitation and/or coastal flooding on Littorinidae snails will be more intense in Spain, especially for L. fabalis, which has the highest mortality rate (100%) among the species studied. In Brazil, there were no significant differences in survival among individuals in the treatment and control groups.

Hence the fact that the scenarios in the IPCC reports for Spain indicate that the frequency, intensity, and/or amount of heavy precipitation in that country are different from those predicted for Brazil. Although there is some disagreement about this increase in the frequency of extreme events, experiences of intense rainfall already occur in Spain, with monthly precipitation of almost 1,000 mm in the north (Monjo et al., 2016Monjo, R., Gaitán, E., Pórtoles, J., Ribalaygua, J. & Torres, L. 2016. Changes in extreme precipitation over Spain using statistical downscaling of CMIP5 projections. International Journal of Climatology, 36, 757-776. DOI: https://doi.org/10.1002/joc.4380
https://doi.org/10.1002/joc.4380...
). Changes in the pluviometric regime and elevations in mean sea level hold the potential to alter existing hydrological and biogeochemical regimes (Smith, 2011Smith, M. D. 2011. An ecological perspective on extreme climatic events: a synthetic definition and framework to guide future research. Journal of Ecology, 99, 656-663. DOI: https://doi.org/10.1111/j.1365-2745.2011.01798.x
https://doi.org/10.1111/j.1365-2745.2011...
), seriously endangering animal biodiversity and its ecological balance (Scheffers et al., 2014Scheffers B. R., Edwards, D. P., Stephen, A. D., Williams, E. & Evans, T. A. 2014. Microhabitats reduces animal’s exposure to climate extremes. Global Change Biology, 20, 495-503. DOI: https://doi.org/10.1111/gcb.12439
https://doi.org/10.1111/gcb.12439...
; Boersma et al., 2016Boersma K. S., Nickerson, A., Francis, C. D. & Siepielski, A. M. 2016. Climate extremes are associated with invertebrate taxonomic and functional composition in mountain lakes. Ecology and Evolution, 6, 8094-8106. DOI: https://doi.org/10.1002/ece3.2517
https://doi.org/10.1002/ece3.2517...
; Sergio et al., 2018Sergio, F., Blas, B. & Hiraldo, F. 2018. Animal responses to natural disturbance and climate extremes: a review. Global and Planetary Change, 161, 28-40. DOI: https://doi.org/10.1016/j.gloplacha.2017.10.009
https://doi.org/10.1016/j.gloplacha.2017...
).

During extreme precipitation events, salinity usually decreases in estuaries (Parada et al., 2012Parada, J. M., Molares, J. & Otero, X. 2012. Multispecies Mortality Patterns of Commercial Bivalves in Relation to Estuarine Salinity Fluctuation. Estuaries and Coasts, 35, 132-142. DOI: https://doi.org/10.1007/s12237-011-9426-2
https://doi.org/10.1007/s12237-011-9426-...
), but there are no specific forecasts for these environments. However, increased sea level rise with frequent flooding of high marsh areas is consistent in predictive models (Stocker, 2013Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V. & Midgley, P. M. (eds.). 2013. Climate Change: The Physical Science Basis. Cambridge, Cambridge University Press.) and its effect on snails can be observed without any variation in salinity, modifying primary and secondary productivity that provides resources and habitat for organisms and leads to species extinction or changes in their geographical distribution (Mcmahon, 1988Mcmahon, R. F. 1988. Respiratory Response to Periodic Emergence in Intertidal Molluscs. American Zoologist, 28, 97-114.; Ng et al., 2017Ng, T. P.T., Laua, S. L. Y, Seuront, L., Davies, M. S., Staffordd, R., Marshall, D. J. & Williams, G. A. 2017. Linking behavior and climate change in intertidal ectotherms: insights from littorinid snails. Journal of Experimental Marine Biology and Ecology, 492, 121-131. DOI: https://doi.org/10.1016/j.jembe.2017.01.023
https://doi.org/10.1016/j.jembe.2017.01....
; Zajac et al., 2017Zajac, R., Kelly, E., Perry, D. & Espinosa, I. 2017. Population ecology of the snail Melampus bidentatus in changing salt marsh landscapes. Marine Ecology, 38, 1-17. DOI: https://doi.org/10.1111/maec.12420
https://doi.org/10.1111/maec.12420...
).

The results obtained in this study indicate that Littorinidae snails can respond to these disturbances by exhibiting the aforementioned changes in survival rates and weight loss. Each species reacts to the disturbance by an integrated response strategy with clear latitudinal differences. Understanding animal responses and adaptations to extreme weather events is urgently needed to better estimate potential future impacts.

ACKNOWLEDGMENTS

The authors are grateful to the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) of Brazil for awarding a postdoctoral fellowship to the first author. The authors are also grateful to the team of the Toralla Marine Science Station (ECIMAT) of the University of Vigo and the Mangrove Ecology Laboratory of the Federal Institute of Ceará for providing the structure and human resources needed to carry out the experiments. The authors would also like to thank the OCR reviewers who contributed to the significant improvement of this article. And, for sure, we want to dedicate a special thanks to Professor Paulo Lana, a colleague and friend with whom we have interacted at various stages of our careers, facilitating the exchange of teachers and students between our institutions, in research tasks and also for his support in the initial stage of this project.

REFERENCES

  • Boehs, G. & Freitas, L. A. 2022. Population attributes of Littoraria angulifera (Gastropoda: Littorinidae) in mangroves in Bahia State, northeastern Brazil. Brazilian Journal of Biology, 82, e243114. DOI: https://doi.org/10.1590/1519-6984.243114
    » https://doi.org/10.1590/1519-6984.243114
  • Boersma K. S., Nickerson, A., Francis, C. D. & Siepielski, A. M. 2016. Climate extremes are associated with invertebrate taxonomic and functional composition in mountain lakes. Ecology and Evolution, 6, 8094-8106. DOI: https://doi.org/10.1002/ece3.2517
    » https://doi.org/10.1002/ece3.2517
  • Bosso, L., Smeraldo, S., Russo, D, Chiusano, M. L., Bertorelle, G., Johanneson, K., Butlin, K., Danovaro, R. & Raffini, F. 2022. The rise and fall of an alien: why the successful colonizer Littorina saxatilis failed to invade the Mediterranean Sea. Biological Invasions, 24, 3169-3187. DOI: https://doi.org/10.1007/s10530-022-02838-y
    » https://doi.org/10.1007/s10530-022-02838-y
  • Brahim, A., Mustapha, N. & Marshall, D. J. 2018. Non-reversible and Reversible Heat Tolerance Plasticity in Tropical Intertidal Animals: Responding to Habitat Temperature Heterogeneity. Frontiers in Physiology, 9, 1-11. DOI: https://doi.org/10.3389/fphys.2018.01909
    » https://doi.org/10.3389/fphys.2018.01909
  • Britton, J. C. 1992. Evaporative water loss, behaviour during emersion, and upper thermal tolerance limits in seven species of eulittoral-fringe Littorinidae (Mollusca: Gastropoda). In: International Symposium on Littorinidae Biology (3 ed, pp. 69-83).
  • Cacabelos, E., Gestoso, L. & Troncoso, J. S. 2008. Macrobenthic fauna in the Ensenada de San Simón (Galicia, north-western Spain). Journal of the Marine Biological Association of the United Kingdom, 88, 237-245. DOI: https://doi.org/10.1017/S0025315408000660
    » https://doi.org/10.1017/S0025315408000660
  • Capaldo, P. S. 1983. Tolerance of the common marsh snail Melampus bidentatus to submersion. Estuaries, 6, 176-177.
  • Chapman, M. G., 1997. Relationships between shell shape, water reserves, survival and growth of highshore Littorinids under experimental conditions in New South Wales, Australia. Journal of Molluscan Studies, 63, 511-529.
  • Darnell, M. Z. & Darnell, K. M. 2018. Geographic variation in thermal tolerance and morphology in a fiddler crab sister-species pair. Marine Biology, 165, 26. DOI: https://doi.org/10.1007/s00227-017-3282-y
    » https://doi.org/10.1007/s00227-017-3282-y
  • Easterling, D. R., Meehl, G. A., Parmesan, C., Changnon, S. A., Karl, T. R. & Mearns, L. O. 2000. Climate Extremes: Observations, modeling, and impacts. Science, 289, 2068-2074. https://doi.org/10.1126/science.289.5487.2068
    » https://doi.org/10.1126/science.289.5487.2068
  • FUNCEME (Fundação Cearense De Meteorologia E Recursos Hídricos). 2018. Posto meteorológico de Acaraú. Availablr from: Availablr from: www.funceme.br Acess date: 2 feb. 2024.
    » www.funceme.br
  • Iacarella, J. C. & Helmuth, B. 2011. Experiencing the salt marsh environment through the foot of Littoraria irrorata: Behavioral responses to thermal and desiccation stresses. Journal of Experimental Marine Biology and Ecology, 409, 143-153. DOI: https://doi.org/10.1016/j.jembe.2011.08.011
    » https://doi.org/10.1016/j.jembe.2011.08.011
  • Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V. & Midgley, P. M. (eds.). 2013. Climate Change: The Physical Science Basis. Cambridge, Cambridge University Press.
  • Jentsch, A., Kreyling, J. & Beierkuhnlein, C. 2007. A new generation of climate-change experiments: Events, not trends. Frontiers in Ecology and the Environment, 5, 365-374. DOI: https://doi.org/10.1890/1540-9295(2007)5[365:ANGOCE]2.0.CO;2
    » https://doi.org/https://doi.org/10.1890/1540-9295(2007)5[365:ANGOCE]2.0.CO;2
  • Leeuwis R., H. J. & Gamperl, A. K. 2022. Adaptations and plastic phenotypic responses of marine animals to the environmental challenges of the high intertidal zone. Oceanography andMarine Biology: An Annual Review, 60, 625-680.
  • Liao M. L., Zhang, S., Zhang, G. Y., Chu, Y. M., Somero, G. N. & Dong, Y. W. 2017. Heat-resistant cytosolic malate dehydrogenases (cMDHs) of thermophilic intertidal snails (genus Echinolittorina): protein underpinnings of tolerance to body temperatures reaching 55°C. Journal of Experimental Biology, 220, 2066-2075. DOI: https://doi.org/10.1242/jeb.156935
    » https://doi.org/10.1242/jeb.156935
  • Maia, R. C. & Coutinho, R. 2012. Structural characteristics of mangrove forest in Brazilian estuaries: A comparative study. Journal of Marine Biology and Oceanography, 47, 87-98.
  • Maia, R. C. & Troncoso, J. S. 2022. Evaluation of the synergistic effects of climate change on estuarine ecosystems at temperate and tropical latitudes using Littorinids (Mollusca: Gastropoda) as indicators. Brazilian Journal of Animal and Environmental Research, 5, 1642-1660.
  • Marshall, D. J., Baharuddin, N. & Mcquaid, C. D. 2013. Behavior moderates climate warming vulnerability in high-rocky-shore snails: interactions of habitat use, energy consumption and environmental temperature. Marine Biology , 160, 2525-2530. DOI: https://doi.org/10.1007/s00227-013-2245-1
    » https://doi.org/10.1007/s00227-013-2245-1
  • Marshall, D. J., Brahim, A., Mustapha, N., Dong, Y. & Sinclair, B. J. 2018. Substantial heat tolerance acclimation capacity in tropical thermophilic snails, but to what benefit? Journal of Experimental Biology , 221, jeb187476. DOI: https://doi.org/10.1242/jeb.187476
    » https://doi.org/10.1242/jeb.187476
  • Marshall D. J., Mcquaid, C. D. & Williams, G. A. 2010. Non-climatic thermal adaptation: Implications for species’ responses to climate warming. Biology Letters, 6, 669-673. DOI: https://doi.org/10.1098/rsbl.2010.0233
    » https://doi.org/10.1098/rsbl.2010.0233
  • Matos, A., Matthews-Cascon, H. & Chaparro, O. 2020. Morphometric analysis of the shell of the intertidal gastropod Echinolittorina lineolata (d’Orbigny, 1840) at different latitudes along the Brazilian coast. Journal of the Marine Biological Association of the United Kingdom , 100, 725-731. DOI: https://doi.org/10.1017/S0025315420000624
    » https://doi.org/10.1017/S0025315420000624
  • Mcquaid, C. D. 1996a. Biology of the gastropod Family Littorinidae: I. Evolutionary aspects. Oceanography andMarine Biology: An Annual Review, 34, 233-262.
  • Mcquaid, C. D. 1996b. Biology of the gastropod Family Littorinidae: II. Role in the ecology of intertidal and shallow marine ecosystems. Oceanography and Marine Biology: An Annual Review, 34, 263-302.
  • Mcmahon, R. F. 1988. Respiratory Response to Periodic Emergence in Intertidal Molluscs. American Zoologist, 28, 97-114.
  • Moreno, J. & Møler, A. P. 2011. Extreme climatic events in relation to global change and their impact on life histories. Current Zoology, 57, 375-389. DOI: https://doi.org/10.1093/czoolo/57.3.375
    » https://doi.org/10.1093/czoolo/57.3.375
  • Monjo, R., Gaitán, E., Pórtoles, J., Ribalaygua, J. & Torres, L. 2016. Changes in extreme precipitation over Spain using statistical downscaling of CMIP5 projections. International Journal of Climatology, 36, 757-776. DOI: https://doi.org/10.1002/joc.4380
    » https://doi.org/10.1002/joc.4380
  • Moutinho, P. R. S. & Alves-Costa, C. P. 2000. Shell size variation and aggregation behavior of Littoraria flava (Gastropoda: Littorinidae) on a Southeastern Brazilian shore. Veliger, 43, 277-281.
  • Ng, T. P. T., Davies, M. S., Stafford, R. & Williams, G. A. 2011. Mucus trail following a mate-searching strategy in mangrove littorinid snails. Animal Behavior, 82, 459-465. DOI: https://doi.org/10.1111/brv.12023
    » https://doi.org/10.1111/brv.12023
  • Ng, T. P.T., Laua, S. L. Y, Seuront, L., Davies, M. S., Staffordd, R., Marshall, D. J. & Williams, G. A. 2017. Linking behavior and climate change in intertidal ectotherms: insights from littorinid snails. Journal of Experimental Marine Biology and Ecology, 492, 121-131. DOI: https://doi.org/10.1016/j.jembe.2017.01.023
    » https://doi.org/10.1016/j.jembe.2017.01.023
  • Parada, J. M., Molares, J. & Otero, X. 2012. Multispecies Mortality Patterns of Commercial Bivalves in Relation to Estuarine Salinity Fluctuation. Estuaries and Coasts, 35, 132-142. DOI: https://doi.org/10.1007/s12237-011-9426-2
    » https://doi.org/10.1007/s12237-011-9426-2
  • Perez-Arlucea, M., Mendez, G., Clemente, F., Nombela, M., Rubio, B. & Filgueira, M. 2005. Hydrology, sediment yield, erosion and sedimentation rates in the estuarine environment of the Ría de Vigo, Galicia, Spain. Journal of Marine Systems, 369, 79-86. DOI: https://doi.org/10.1016/j.jmarsys.2004.07.013
    » https://doi.org/10.1016/j.jmarsys.2004.07.013
  • Reid, D. G. 1996. Systematics and Evolution of Littorina. London, Ray Society.
  • Reid, D. G., Dyal, P. & Williams, S. T. 2009. Global diversification of mangrove fauna: a molecular phylogeny of Littoraria (Gastropoda: Littorinidae). Molecular Phylogenetics and Evolution, 55, 185-201. DOI: https://doi.org/10.1016/j.ympev.2009.09.036
    » https://doi.org/10.1016/j.ympev.2009.09.036
  • Reid, D. G. 1989. Comparative morphology, phylogeny and evolution of the gastropod family Littorinidae. Philosophical Transactions of the Royal Society of London, Series B, 324(1220), 1-110. DOI: https://doi.org/10.1098/rstb.1989.0040
    » https://doi.org/10.1098/rstb.1989.0040
  • Robins, P. E., Skov, M. W., Lewis, M. J., Gimenez, L., Davies, A. G., Malham, S. K., Neill, S. P., Mcdonald, J. E., Whitton, T. A., Jackson, S. E. & Jago, C. F. 2016. Impact of climate change on UK estuaries: A review of past trends and potential projections. Estuarine, Coastal and Shelf Science, 169, 119-135. DOI: https://doi.org/10.1016/j.ecss.2015.12.016
    » https://doi.org/10.1016/j.ecss.2015.12.016
  • Rolán-Alvarez, E., Austin, C. J. & Boulding, E. G. 2015. The contribution of the genus Littorina to the field of evolutionary ecology. Oceanography and Marine Biology: An Annual Review, 53, 157-214. DOI: https://doi.org/10.1201/b18733-6
    » https://doi.org/10.1201/b18733-6
  • Scheffers B. R., Edwards, D. P., Stephen, A. D., Williams, E. & Evans, T. A. 2014. Microhabitats reduces animal’s exposure to climate extremes. Global Change Biology, 20, 495-503. DOI: https://doi.org/10.1111/gcb.12439
    » https://doi.org/10.1111/gcb.12439
  • Sergio, F., Blas, B. & Hiraldo, F. 2018. Animal responses to natural disturbance and climate extremes: a review. Global and Planetary Change, 161, 28-40. DOI: https://doi.org/10.1016/j.gloplacha.2017.10.009
    » https://doi.org/10.1016/j.gloplacha.2017.10.009
  • Smith, M. D. 2011. An ecological perspective on extreme climatic events: a synthetic definition and framework to guide future research. Journal of Ecology, 99, 656-663. DOI: https://doi.org/10.1111/j.1365-2745.2011.01798.x
    » https://doi.org/10.1111/j.1365-2745.2011.01798.x
  • Sheridan, J. A. & Bickford, D. 2011. Shrinking body size as an ecological response to climate change. Nature climate change, 1, 401-406. DOI: https://doi.org/10.1038/nclimate1259
    » https://doi.org/10.1038/nclimate1259
  • Tanaka, M. O. & Maia, R. C. 2006. Shell Morphological Variation of Littoraria angulifera among and within mangroves in NE Brazil. Hydrobiologia, 559, 193-202.
  • Vermeij, G. J. 1972. Intraspecific shore level size gradients in intertidal mollusks. Ecology, 53, 693-700.
  • Vinagre, C., Leal, I., Mendonça, V., Madeira, D., Narciso, L., Diniz, M. S. & Flores, A. A. V. 2015. Vulnerability to climate warming and acclimation capacity of tropical and temperate coastal organisms. Ecological Indicators, 62, 317-327. DOI: https://doi.org/10.1016/j.ecolind.2015.11.010
    » https://doi.org/10.1016/j.ecolind.2015.11.010
  • Vinagre, C., Leal, I., Mendonça, V., Cereja, R., Abreu-Afonso, F., Dias, R., Mizrahi, D. & Flores, A. A. V. 2018. Ecological traps in shallow coastal waters - Potential effect of heat-waves in tropical and temperate organisms. Plos one, 13, e0192700. DOI: https://doi.org/10.1371/journal.pone.0192700
    » https://doi.org/10.1371/journal.pone.0192700
  • Wernberg, T., Smale, D. A. & Thomsen, M. S. 2012. A decade of climate change experiments on marine organisms: procedures, patterns and problems. Global Change Biology , 18, 1491-1498. DOI: https://doi.org/10.1111/j.1365-2486.2012.02656.x
    » https://doi.org/10.1111/j.1365-2486.2012.02656.x
  • Wetz, M. S. & Yoskowitz, D. W. 2013. An ‘extreme’ future for estuaries? Effects of extreme climatic events on estuarine water quality and ecology. Marine Pollution Bulletin, 69, 7-18. DOI: https://doi.org/10.1016/j.marpolbul.2013.01.020
    » https://doi.org/10.1016/j.marpolbul.2013.01.020
  • Zajac, R., Kelly, E., Perry, D. & Espinosa, I. 2017. Population ecology of the snail Melampus bidentatus in changing salt marsh landscapes. Marine Ecology, 38, 1-17. DOI: https://doi.org/10.1111/maec.12420
    » https://doi.org/10.1111/maec.12420

Edited by

Associate Editor:

José Milton Andriguetto Filho

Publication Dates

  • Publication in this collection
    31 May 2024
  • Date of issue
    2024

History

  • Received
    21 Apr 2023
  • Accepted
    19 Dec 2023
Instituto Oceanográfico da Universidade de São Paulo Praça do Oceanográfico 191, CEP: 05508-120, São Paulo, SP - Brasil, Tel.: (11) 3091-6501 - São Paulo - SP - Brazil
E-mail: diretoria.io@usp.br