Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae)

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Number of brooded eggs and wet and dry brood weights were measured in the estuarine crab, Chasmagnathus granulatus. Best correlations for all reproductive variables were found with respect to female wet body weight, but while the best fitted model was logarithmic for broods having uneyed embryos (UE...

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Autores principales: Stella, V.S., López, L.S., Rodríguez, E.M.
Formato: JOUR
Materias:
Chasmagnathus granulatus
brood biomass
fecundity
reproduction
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0011216X_v69_n3_p306_Stella
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_0011216X_v69_n3_p306_Stella
record_format dspace
spelling todo:paper_0011216X_v69_n3_p306_Stella2023-10-03T14:09:37Z Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae) Stella, V.S. López, L.S. Rodríguez, E.M. Chasmagnathus granulatus Chasmagnathus granulatus brood biomass fecundity reproduction Number of brooded eggs and wet and dry brood weights were measured in the estuarine crab, Chasmagnathus granulatus. Best correlations for all reproductive variables were found with respect to female wet body weight, but while the best fitted model was logarithmic for broods having uneyed embryos (UE), a linear model corresponded to eyed embryo (EE) broods. For UE, larger females invested in each brooded egg 8.4% more of dry biomass than smaller females, in accordance with the logarithmic model adjusted. Overall fecundity was estimated in 26790 ± 9936 eggs/brood/female. Biomass investment in reproduction was estimated in 7.1% (dry weight basis) and 9.3% (wet weigh basis). Egg dry weight decreased throughout embryonic development, in accordance with metabolic requirements of embryos, while a higher water content was noted in EE, probably related to tissue solvation during development and/or increase of the osmotic pressure needed for hatching. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0011216X_v69_n3_p306_Stella
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Chasmagnathus granulatus
Chasmagnathus granulatus
brood biomass
fecundity
reproduction
spellingShingle Chasmagnathus granulatus
Chasmagnathus granulatus
brood biomass
fecundity
reproduction
Stella, V.S.
López, L.S.
Rodríguez, E.M.
Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae)
topic_facet Chasmagnathus granulatus
Chasmagnathus granulatus
brood biomass
fecundity
reproduction
description Number of brooded eggs and wet and dry brood weights were measured in the estuarine crab, Chasmagnathus granulatus. Best correlations for all reproductive variables were found with respect to female wet body weight, but while the best fitted model was logarithmic for broods having uneyed embryos (UE), a linear model corresponded to eyed embryo (EE) broods. For UE, larger females invested in each brooded egg 8.4% more of dry biomass than smaller females, in accordance with the logarithmic model adjusted. Overall fecundity was estimated in 26790 ± 9936 eggs/brood/female. Biomass investment in reproduction was estimated in 7.1% (dry weight basis) and 9.3% (wet weigh basis). Egg dry weight decreased throughout embryonic development, in accordance with metabolic requirements of embryos, while a higher water content was noted in EE, probably related to tissue solvation during development and/or increase of the osmotic pressure needed for hatching.
format JOUR
author Stella, V.S.
López, L.S.
Rodríguez, E.M.
author_facet Stella, V.S.
López, L.S.
Rodríguez, E.M.
author_sort Stella, V.S.
title Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae)
title_short Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae)
title_full Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae)
title_fullStr Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae)
title_full_unstemmed Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae)
title_sort fecundity and brood biomass investment in the estuarine crab chasmagnathus granulatus dana, 1851 (decapoda, brachyura, grapsidae)
url http://hdl.handle.net/20.500.12110/paper_0011216X_v69_n3_p306_Stella
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AT lopezls fecundityandbroodbiomassinvestmentintheestuarinecrabchasmagnathusgranulatusdana1851decapodabrachyuragrapsidae
AT rodriguezem fecundityandbroodbiomassinvestmentintheestuarinecrabchasmagnathusgranulatusdana1851decapodabrachyuragrapsidae
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