Reconstructing the life cycle of the isopodan group Aegidae with morphological descriptions and the importance of immature stages

A collection of various developmental stages of Aegidae is presented and described, with the first description and photographs of eggs and embryos of this group. Intra-specific variation among specimens and developmental stages is described, as well as inter-specific, ontogenetic variation between immature stages and their better-known adult stages. Developmental stage differentiation of these opportunistic feeders is compared to that of the closely related parasitic representatives of Cymothoidae. This study is the first to attempt to provide the life cycle of these animals, which include well-documented and described immature stages.

Keywords:
Cymothoida; development; embryo; manca; ontogeny

Authorship

Serita van der Wal

conceptualization and design

performed research

aquisition of data

analysis and interpretation of data

preparation of figures/tables/maps

writing original draf

writing critical review and editing

Ludwig Maximilian University of Munich, Faculty of Biology, Zoomorphology Group. Großhaderner Str. 2, 82152 Planegg-Martinsried, Germany. Ludwig Maximilian University of MunichGermanyPlanegg, Germany Ludwig Maximilian University of Munich, Faculty of Biology, Zoomorphology Group. Großhaderner Str. 2, 82152 Planegg-Martinsried, Germany.

https://orcid.org/0000-0002-7426-8777

Joachim T. Haug

conceptualization and design

analysis and interpretation of data

preparation of figures/tables/maps

writing original draf

writing critical review and editing

Ludwig Maximilian University of Munich, GeoBio-Center. Richard-Wagner-Str. 10,80333 Munich, Germany. Ludwig Maximilian University of MunichGermanyMunich, Germany Ludwig Maximilian University of Munich, GeoBio-Center. Richard-Wagner-Str. 10,80333 Munich, Germany.

https://orcid.org/0000-0001-8254-8472

CORRESPONDING AUTHOR
Serita van der Wal vanderwal@biologie.uni-muenchen.de

Associate Editor:

Brenda Doti

SvdW

E-mail: vanderwal@biologie.uni-muenchen.de

JTH
E-mail: jhaug@biologie.uni-muenchen.de

Author contribution

Conceptualization and Design: SvdW, JTH. Performed research: SvdW. Acquisition of data: SvdW. Analysis and interpretation of data: SvdW, JTH. Preparation of figures/tables/maps: SvdW. Writing - original draft: SvdW. Writing - critical review and editing: SvdW, JTH.

Competing interests

The authors declare no competing interest.

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (11)

Thumbnail

Figure 1.
Aega monophthalmaJohnston, 1834Johnston G 1834. Illustrations in British Zoology. Magazine of natural history and journal of zoology, botany, mineralogy, geology and meteorology, 7(1): 230-235. https://www.biodiversitylibrary.org/item/19625 - page/244/mode/1up
https://www.biodiversitylibrary.org/item... immature male stage 3 (NIWA 23759). A, Dorsal view. B, Ventral view. C, Lateral view. D, Anteroventral view. E, Antennula. F, Antenna. G, Mandible. H, Maxillula. I, Maxilla. J, Maxilliped. K, Close-up of underdeveloped thoracopod 7. L, Close-up of penial openings. M, Pleon appendage 2 with appendix masculina. Scales: A-C, 5 mm; E-F, 1 mm (top, right); G-J, 1 mm (bottom, right).

Thumbnail

Figure 2.
Aegapheles mahanaBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature male stage 3 (NIWA 17943). A, Dorsal view. B, Ventral view. C, Lateral view. D, Anteroventral view. E, Antennula. F, Antenna. G, Mandible. H, Maxillula. I, Maxilla. J, Maxilliped. K. Close-up of underdeveloped thoracopod 7 and penial tubercules. L, Pleon appendage 2 with appendix masculina. Scales: A-C, 5 mm; E-F, 1 mm; G-J, 500 µm.

Thumbnail

Figure 3.
Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) (NIWA 23671). A-E, Eggs. F-G, Embryo lateral view. H-I, Embryo ventral view. h, head; atl, antennula; an, antenna; a1-6, trunk appendage 1-6; pa, pleon appendages; pt, pleotelson.

Thumbnail

Figure 4.
Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) immature stage 2 (NIWA 23671). A, Dorsal view. B, Ventral view. C, Anteroventral view. D, Antennula. E, Antenna. F, Mandible. G, Maxillula. H, Maxilla. I, Maxilliped. J, Close-up of sternite 7 (without penes). K, Pleon appendage 2 without appendix masculina. L, Example of penial lobes of adult male. Scales: A-B, 2 mm; D-E, 0.5 mm (top, right); F-I, 250 µm.

Thumbnail

Figure 5.
Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) immature stage 1 (NIWA 23664). A, Dorsal view. B, Ventral view. C, Lateral view. D, Anteroventral view. E, Antennula. F, Antenna. G, Mandible. H, Maxillula. I, Maxilla. J, Maxilliped. K, Pleon appendage 2 without appendix masculina. Scales: A-C, 1 mm; E-F, 500 µm; G-J, 200µm.

Thumbnail

Figure 6.
Aegiochus kanohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature male stage 3 (NIWA 24023). A-B, Dorsal view. C, Lateral view. D, Ventral view. E, Anteroventral view. F, Antennula. G, Antenna. H, Mandible. I, Maxillula. J, Maxilla. K, Maxilliped. L, Close-up of underdeveloped thoracopod 7 and penial lobes. M, Pleon appendage 2 with appendix masculina. Scales: A-D, 2.5 mm; F-G, 500 µm; H-K, 250µm.

Thumbnail

Figure 7.
Aegiochus nohinohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature stage 1 (NIWA 24018). A, Dorsal view. B-C, Ventral view. D, Lateral view. E, Antennula. F, Antenna. G, Mandible. H, Maxilliped. I, Maxillula. J, Maxilla. Scales: A-D, 1 mm; E-F, 0.25 mm (top, right); G-J, 0.25 mm (bottom, right).

Thumbnail

Figure 8.
Aegiochus nohinohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... A-D, Immature stage 2 (NIWA 24018). E-H, Adult male (NIWA 24018). A, Dorsal view. B, Ventral view. C, Lateral view. D, Close-up of underdeveloped penial lobes. E, Dorsal view. F, Ventral view. G, Lateral view. H, Close-up of well-developed penial lobes.

Thumbnail

Figure 9.
Aegiochus vigilans (Haswell, 1881Haswell WA 1881. On some new Australian marine Isopoda. Part I. Proceedings of the Linnean Society of New South Wales, 5(4): 470-481. DOI: 10.5962/bhl.part.15890
https://doi.org/10.5962/bhl.part.15890... ) immature female stage 3 (NIWA 23779). A, Dorsal view. B, Ventral view. C, Lateral view. D, Anteroventral view. E, Antennula. F, Antenna. G, Mandible. H, Maxillula. I, Maxilla. J, Maxilliped. K, Close-up of underdeveloped thoracopod 7. L, Pleon appendage 2 without appendix masculina. Scales: A-C, 2 mm; E-F, 1 mm; G-J, 0.5 mm.

Thumbnail

Figure 10.
All examined specimens to scale for size comparison. A, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) ovigerous female (NIWA 23671). B, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) male (NIWA 23671). C, Aegiochus nohinohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... ovigerous female (NIWA 24018). D, Aegiochus nohinohiBruce, 2009 Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... non-ovigerous female (NIWA 24018). E, Aegiochus nohinohiBruce, 2009 Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... male (NIWA 24018). F, Aegiochus kanohi Bruce, 2009 male (NIWA 24023). G, Aegiochus kanohiBruce, 2009 Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... non-ovigerous female (NIWA 24023). H, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) gravid female (NIWA 23671). I, Aega monophthalmaJohnston, 1834Johnston G 1834. Illustrations in British Zoology. Magazine of natural history and journal of zoology, botany, mineralogy, geology and meteorology, 7(1): 230-235. https://www.biodiversitylibrary.org/item/19625 - page/244/mode/1up
https://www.biodiversitylibrary.org/item... immature male stage 3 (NIWA 23759). J, Aegiochus vigilans (Haswell, 1881Haswell WA 1881. On some new Australian marine Isopoda. Part I. Proceedings of the Linnean Society of New South Wales, 5(4): 470-481. DOI: 10.5962/bhl.part.15890
https://doi.org/10.5962/bhl.part.15890... ) immature female stage 3 (NIWA 23779). K, Aegapheles mahanaBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature male stage 3 (NIWA 17943). L, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) eggs (NIWA 23671). M, Aegiochus kanohi Bruce, 2009 immature male stage 3 (NIWA 24023). N, Aegiochus nohinohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature stage 1 (NIWA 24018). O, Aegiochus antarctica (Hodgson, 1910) embryos (NIWA 23671). P, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) immature stage 1 (NIWA 23664). Q, Aegiochus nohinohiBruce, 2009 Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature male stage 3 (NIWA 24018). R, Aegiochus antarctica (Hodgson, 1910) immature female stage 2 (NIWA 23671).

Thumbnail

Figure 11.
A tentative restoration of the life cycle of Aegidae, based on the material examined. A, Eggs B, Embryos C, Immature stage 1 D, Immature male stage 2 E-F, Immature male stage 3. G-I, Adult male. J-K, Immature female stage 3. L-M, Non-ovigerous female. N-O, Ovigerous female. P, gravid female. Short scale bar, 1 mm; long scale bar, 5 mm.

Figure 1. Aega monophthalmaJohnston, 1834Johnston G 1834. Illustrations in British Zoology. Magazine of natural history and journal of zoology, botany, mineralogy, geology and meteorology, 7(1): 230-235. https://www.biodiversitylibrary.org/item/19625 - page/244/mode/1up
https://www.biodiversitylibrary.org/item... immature male stage 3 (NIWA 23759). A, Dorsal view. B, Ventral view. C, Lateral view. D, Anteroventral view. E, Antennula. F, Antenna. G, Mandible. H, Maxillula. I, Maxilla. J, Maxilliped. K, Close-up of underdeveloped thoracopod 7. L, Close-up of penial openings. M, Pleon appendage 2 with appendix masculina. Scales: A-C, 5 mm; E-F, 1 mm (top, right); G-J, 1 mm (bottom, right).

Figure 2. Aegapheles mahanaBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature male stage 3 (NIWA 17943). A, Dorsal view. B, Ventral view. C, Lateral view. D, Anteroventral view. E, Antennula. F, Antenna. G, Mandible. H, Maxillula. I, Maxilla. J, Maxilliped. K. Close-up of underdeveloped thoracopod 7 and penial tubercules. L, Pleon appendage 2 with appendix masculina. Scales: A-C, 5 mm; E-F, 1 mm; G-J, 500 µm.

Figure 3. Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) (NIWA 23671). A-E, Eggs. F-G, Embryo lateral view. H-I, Embryo ventral view. h, head; atl, antennula; an, antenna; a1-6, trunk appendage 1-6; pa, pleon appendages; pt, pleotelson.

Figure 4. Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) immature stage 2 (NIWA 23671). A, Dorsal view. B, Ventral view. C, Anteroventral view. D, Antennula. E, Antenna. F, Mandible. G, Maxillula. H, Maxilla. I, Maxilliped. J, Close-up of sternite 7 (without penes). K, Pleon appendage 2 without appendix masculina. L, Example of penial lobes of adult male. Scales: A-B, 2 mm; D-E, 0.5 mm (top, right); F-I, 250 µm.

Figure 5. Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) immature stage 1 (NIWA 23664). A, Dorsal view. B, Ventral view. C, Lateral view. D, Anteroventral view. E, Antennula. F, Antenna. G, Mandible. H, Maxillula. I, Maxilla. J, Maxilliped. K, Pleon appendage 2 without appendix masculina. Scales: A-C, 1 mm; E-F, 500 µm; G-J, 200µm.

Figure 6. Aegiochus kanohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature male stage 3 (NIWA 24023). A-B, Dorsal view. C, Lateral view. D, Ventral view. E, Anteroventral view. F, Antennula. G, Antenna. H, Mandible. I, Maxillula. J, Maxilla. K, Maxilliped. L, Close-up of underdeveloped thoracopod 7 and penial lobes. M, Pleon appendage 2 with appendix masculina. Scales: A-D, 2.5 mm; F-G, 500 µm; H-K, 250µm.

Figure 7. Aegiochus nohinohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature stage 1 (NIWA 24018). A, Dorsal view. B-C, Ventral view. D, Lateral view. E, Antennula. F, Antenna. G, Mandible. H, Maxilliped. I, Maxillula. J, Maxilla. Scales: A-D, 1 mm; E-F, 0.25 mm (top, right); G-J, 0.25 mm (bottom, right).

Figure 8. Aegiochus nohinohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... A-D, Immature stage 2 (NIWA 24018). E-H, Adult male (NIWA 24018). A, Dorsal view. B, Ventral view. C, Lateral view. D, Close-up of underdeveloped penial lobes. E, Dorsal view. F, Ventral view. G, Lateral view. H, Close-up of well-developed penial lobes.

Figure 9. Aegiochus vigilans (Haswell, 1881Haswell WA 1881. On some new Australian marine Isopoda. Part I. Proceedings of the Linnean Society of New South Wales, 5(4): 470-481. DOI: 10.5962/bhl.part.15890
https://doi.org/10.5962/bhl.part.15890... ) immature female stage 3 (NIWA 23779). A, Dorsal view. B, Ventral view. C, Lateral view. D, Anteroventral view. E, Antennula. F, Antenna. G, Mandible. H, Maxillula. I, Maxilla. J, Maxilliped. K, Close-up of underdeveloped thoracopod 7. L, Pleon appendage 2 without appendix masculina. Scales: A-C, 2 mm; E-F, 1 mm; G-J, 0.5 mm.

Figure 10. All examined specimens to scale for size comparison. A, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) ovigerous female (NIWA 23671). B, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) male (NIWA 23671). C, Aegiochus nohinohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... ovigerous female (NIWA 24018). D, Aegiochus nohinohiBruce, 2009 Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... non-ovigerous female (NIWA 24018). E, Aegiochus nohinohiBruce, 2009 Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... male (NIWA 24018). F, Aegiochus kanohi Bruce, 2009 male (NIWA 24023). G, Aegiochus kanohiBruce, 2009 Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... non-ovigerous female (NIWA 24023). H, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) gravid female (NIWA 23671). I, Aega monophthalmaJohnston, 1834Johnston G 1834. Illustrations in British Zoology. Magazine of natural history and journal of zoology, botany, mineralogy, geology and meteorology, 7(1): 230-235. https://www.biodiversitylibrary.org/item/19625 - page/244/mode/1up
https://www.biodiversitylibrary.org/item... immature male stage 3 (NIWA 23759). J, Aegiochus vigilans (Haswell, 1881Haswell WA 1881. On some new Australian marine Isopoda. Part I. Proceedings of the Linnean Society of New South Wales, 5(4): 470-481. DOI: 10.5962/bhl.part.15890
https://doi.org/10.5962/bhl.part.15890... ) immature female stage 3 (NIWA 23779). K, Aegapheles mahanaBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature male stage 3 (NIWA 17943). L, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) eggs (NIWA 23671). M, Aegiochus kanohi Bruce, 2009 immature male stage 3 (NIWA 24023). N, Aegiochus nohinohiBruce, 2009Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature stage 1 (NIWA 24018). O, Aegiochus antarctica (Hodgson, 1910) embryos (NIWA 23671). P, Aegiochus antarctica (Hodgson, 1910Hodgson TV 1910. Crustacea IX. Isopoda. p. 1-77. In: Harmer SF (Ed.), National Antarctic Expedition 1901-1904. London, British Museum (Natural History).) immature stage 1 (NIWA 23664). Q, Aegiochus nohinohiBruce, 2009 Bruce NL 2009. The marine fauna of New Zealand: Isopoda, Aegidae (Crustacea). NIWA Biodiversity Memoir, 122: 1-252. https://decapoda.nhm.org/pdfs/31057/31057.pdf
https://decapoda.nhm.org/pdfs/31057/3105... immature male stage 3 (NIWA 24018). R, Aegiochus antarctica (Hodgson, 1910) immature female stage 2 (NIWA 23671).

Figure 11. A tentative restoration of the life cycle of Aegidae, based on the material examined. A, Eggs B, Embryos C, Immature stage 1 D, Immature male stage 2 E-F, Immature male stage 3. G-I, Adult male. J-K, Immature female stage 3. L-M, Non-ovigerous female. N-O, Ovigerous female. P, gravid female. Short scale bar, 1 mm; long scale bar, 5 mm.

How to cite

copy

Sociedade Brasileira de Carcinologia Instituto de Biociências, UNESP, Campus Botucatu, Rua Professor Doutor Antônio Celso Wagner Zanin, 250 , Botucatu, SP, 18618-689 - Botucatu - SP - Brazil
E-mail: editor.nauplius@gmail.com

Acompanhe os números deste periódico no seu leitor de RSS

Versão para download de PDF

PDF

Inglês

Versões e tradução automática

Versão original do texto

English

Tradução automática

Google Translator
Microsoft Translator

Como citar

RIS

BIBTEX

Outros formatos de citação e exportação:

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
E-mail: scielo@scielo.org

Leia a Declaração de Acesso Aberto

Métricas

Reconstructing the life cycle of the isopodan group Aegidae with morphological descriptions and the importance of immature stages

PlumX

Mensagem

[1] CORRESPONDING AUTHOR
Serita van der Wal vanderwal@biologie.uni-muenchen.de