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Abstract:

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.

Registro:

Documento: Artículo
Título:Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae)
Autor:Stella, V.S.; López, L.S.; Rodríguez, E.M.
Filiación:Department of Biological Sciences, University of Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Chasmagnathus granulatus; Chasmagnathus granulatus; brood biomass; fecundity; reproduction
Año:1996
Volumen:69
Número:3
Página de inicio:306
Página de fin:312
DOI: http://dx.doi.org/10.1163/156854096X00907
Título revista:Crustaceana
Título revista abreviado:CRUSTACEANA
ISSN:0011216X
CODEN:CRUSA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0011216X_v69_n3_p306_Stella

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Citas:

---------- APA ----------
Stella, V.S., López, L.S. & Rodríguez, E.M. (1996) . Fecundity and brood biomass investment in the estuarine crab Chasmagnathus granulatus dana, 1851 (Decapoda, Brachyura, Grapsidae). Crustaceana, 69(3), 306-312.
http://dx.doi.org/10.1163/156854096X00907
---------- CHICAGO ----------
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)" . Crustaceana 69, no. 3 (1996) : 306-312.
http://dx.doi.org/10.1163/156854096X00907
---------- MLA ----------
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)" . Crustaceana, vol. 69, no. 3, 1996, pp. 306-312.
http://dx.doi.org/10.1163/156854096X00907
---------- VANCOUVER ----------
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). CRUSTACEANA. 1996;69(3):306-312.
http://dx.doi.org/10.1163/156854096X00907