Influence of female size on offspring quality of the freshwater crayfish cherax quadricarinatus (Parastacidae: Decapoda)

Knowledge on maternal influences in offspring quality of decapod crustaceans is limited, especially for freshwater species. We investigated the effects of female body weight on production variables (actual fecundity, AF), morphological/morphometrical features of eggs (volume, wet and dry weights) an...

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Autores principales: Arias, M., Tropea, C., Calvo, N.S., Greco, L.S.L.
Formato: JOUR
Materias:
Decapod crustaceans
Egg quality
Female weight
Juvenile quality
Production variables
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02780372_v32_n6_p883_Arias
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_02780372_v32_n6_p883_Arias2023-10-03T15:16:55Z Influence of female size on offspring quality of the freshwater crayfish cherax quadricarinatus (Parastacidae: Decapoda) Arias, M. Tropea, C. Calvo, N.S. Greco, L.S.L. Decapod crustaceans Egg quality Female weight Juvenile quality Production variables Knowledge on maternal influences in offspring quality of decapod crustaceans is limited, especially for freshwater species. We investigated the effects of female body weight on production variables (actual fecundity, AF), morphological/morphometrical features of eggs (volume, wet and dry weights) and recently independent juveniles (size, weight), and on juvenile growth performance and survival in the freshwater crayfish Cherax quadricarinatus (von Martens, 1868), under laboratory conditions. For this purpose, two groups of females were used: "large females" weighing 50-70 g; and "small females" weighing 20-35 g. The AF was the only production variable that increased with female weight. The percentage of ovigerous females also tended to increase with female weight: the 73% of "large females" and the 57% of "small females" spawned once. The remaining features did not vary with female weight. These results indicate that under controlled and constant laboratory conditions the egg and juvenile quality are similar between "small females" and "large females," an important outcome both from a theoretical and an economical point of view. In particular, this is the first report on the absence of correlation between maternal weight and juvenile size in a decapod crustacean with direct development. The results are compared with previous studies mainly in marine decapod species with indirect development. © 2012, The Crustacean Society. Fil:Tropea, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Calvo, N.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02780372_v32_n6_p883_Arias
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Decapod crustaceans
Egg quality
Female weight
Juvenile quality
Production variables
spellingShingle Decapod crustaceans
Egg quality
Female weight
Juvenile quality
Production variables
Arias, M.
Tropea, C.
Calvo, N.S.
Greco, L.S.L.
Influence of female size on offspring quality of the freshwater crayfish cherax quadricarinatus (Parastacidae: Decapoda)
topic_facet Decapod crustaceans
Egg quality
Female weight
Juvenile quality
Production variables
description Knowledge on maternal influences in offspring quality of decapod crustaceans is limited, especially for freshwater species. We investigated the effects of female body weight on production variables (actual fecundity, AF), morphological/morphometrical features of eggs (volume, wet and dry weights) and recently independent juveniles (size, weight), and on juvenile growth performance and survival in the freshwater crayfish Cherax quadricarinatus (von Martens, 1868), under laboratory conditions. For this purpose, two groups of females were used: "large females" weighing 50-70 g; and "small females" weighing 20-35 g. The AF was the only production variable that increased with female weight. The percentage of ovigerous females also tended to increase with female weight: the 73% of "large females" and the 57% of "small females" spawned once. The remaining features did not vary with female weight. These results indicate that under controlled and constant laboratory conditions the egg and juvenile quality are similar between "small females" and "large females," an important outcome both from a theoretical and an economical point of view. In particular, this is the first report on the absence of correlation between maternal weight and juvenile size in a decapod crustacean with direct development. The results are compared with previous studies mainly in marine decapod species with indirect development. © 2012, The Crustacean Society.
format JOUR
author Arias, M.
Tropea, C.
Calvo, N.S.
Greco, L.S.L.
author_facet Arias, M.
Tropea, C.
Calvo, N.S.
Greco, L.S.L.
author_sort Arias, M.
title Influence of female size on offspring quality of the freshwater crayfish cherax quadricarinatus (Parastacidae: Decapoda)
title_short Influence of female size on offspring quality of the freshwater crayfish cherax quadricarinatus (Parastacidae: Decapoda)
title_full Influence of female size on offspring quality of the freshwater crayfish cherax quadricarinatus (Parastacidae: Decapoda)
title_fullStr Influence of female size on offspring quality of the freshwater crayfish cherax quadricarinatus (Parastacidae: Decapoda)
title_full_unstemmed Influence of female size on offspring quality of the freshwater crayfish cherax quadricarinatus (Parastacidae: Decapoda)
title_sort influence of female size on offspring quality of the freshwater crayfish cherax quadricarinatus (parastacidae: decapoda)
url http://hdl.handle.net/20.500.12110/paper_02780372_v32_n6_p883_Arias
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