Resumo
The effect of temperature on the development of Podisus nigrispinus (Dallas, 1851) and Supputius cinctceps (Stål, 1860) was studied in order to adjust equations to predict the development of these predators under 18, 20, 25, 30, 32 and 35º±0.2ºC, relative humidity of 65±10% and photophase of 12 hours. Incubation period of the eggs and duration and viability of nymphal stage were quadratically influenced by temperature while egg viability decreased linearly with increased temperature. The best temperature for egg development was 29ºC for both species and for nymphal development of P. nigrispinus and S. cincticeps they were 29º and 28ºC respectivelly. Nymphal viability was highly affected by extreme temperatures, with optima around 24ºC for S. cincticeps and 26ºC for P. nigrispinus.
Heteroptera; Pentatomidae; Podisus nigrispinus; Supputius cincticeps; nymphal development; predators
Heteroptera; Pentatomidae; Podisus nigrispinus; Supputius cincticeps; nymphal development; predators
Desenvolvimento e sobrevivência ninfal de Podisus nigrispinus (Dallas) e Supputius cincticeps (Stål) (Heteroptera, Pentatomidae) em diferentes temperaturas
Nymphal development of Podisus nigrispinus (Dallas) and Supputius cincticeps (Stål) (Heteroptera, Pentatomidae) at constant temperatures
Julcemar DidonetI; José Cola ZanuncioII; Carlos S. SediyamaIII; Martelo C. PicançoII
IUniversidade de Tocantins. 77410-470 Gurupi. Tocantins, Brasil
IIDepartamento de Biologia Animal. Universidade Federal de Viçosa. 36571-000 Viçosa. Minas Gerais. Brasil
IIIDepartamento de Fitotecnia, Universidade Federal de Viçosa. 36571-000 Viçosa, Minas Gerais. Brasil
ABSTRACT
The effect of temperature on the development of Podisus nigrispinus (Dallas, 1851) and Supputius cinctceps (Stål, 1860) was studied in order to adjust equations to predict the development of these predators under 18, 20, 25, 30, 32 and 35º±0.2ºC, relative humidity of 65±10% and photophase of 12 hours. Incubation period of the eggs and duration and viability of nymphal stage were quadratically influenced by temperature while egg viability decreased linearly with increased temperature. The best temperature for egg development was 29ºC for both species and for nymphal development of P. nigrispinus and S. cincticeps they were 29º and 28ºC respectivelly. Nymphal viability was highly affected by extreme temperatures, with optima around 24ºC for S. cincticeps and 26ºC for P. nigrispinus.
KEY WORDS: Heteroptera, Pentatomidae, Podisus nigrispinus, Supputius cincticeps, nymphal development, predators
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AGRADECIMENTOS. Ao BIOAGRO, CAPES, CNPq e FAPEMIG, pelas bolsas e auxílios concedidos. Ao Programa Cooperativo de Manejo Integrado de Pragas Florestais (PC-MIP), da Sociedade de Investigações Florestais (SIF), pelo apoio na realização desta pesquisa.
Recebido em 13.VII.1994; aceito em 20.IX.1995.
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Datas de Publicação
-
Publicação nesta coleção
21 Jul 2009 -
Data do Fascículo
Set 1995
Histórico
-
Recebido
13 Jul 1994 -
Aceito
20 Set 1995