Relative growth and reproductive parameters in a population of Microphrys bicornutus (Brachyura, Majoidea) from Bocas del Toro, Caribbean Sea, Panama

Size structure within a population, relative growth of secondary sexual characters in both sexes, and fecundity of females were assessed from field samples of Microphrys bicornutus in the vicinity of Bocas del Toro, Caribbean Sea, Panama. The study was based upon 135 individuals captured by hand and...

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Autores principales:	Sal-Moyano,María Paz, Lagos-Tobias,Ana Milena, Felder,Darryl L, Mantelatto,Fernando L
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2014
Materias:	Caribbean Sea fecundity relative growth sexual maturity spider crab
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572014000100009
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spelling	oai:scielo:S0718-195720140001000092014-08-18Relative growth and reproductive parameters in a population of Microphrys bicornutus (Brachyura, Majoidea) from Bocas del Toro, Caribbean Sea, PanamaSal-Moyano,María PazLagos-Tobias,Ana MilenaFelder,Darryl LMantelatto,Fernando L Caribbean Sea fecundity relative growth sexual maturity spider crab Size structure within a population, relative growth of secondary sexual characters in both sexes, and fecundity of females were assessed from field samples of Microphrys bicornutus in the vicinity of Bocas del Toro, Caribbean Sea, Panama. The study was based upon 135 individuals captured by hand and a kick net. Carapace width ranged from 6.5 to 14.4 mm for ovigerous females, 4.2 to 16 mm for non-ovigerous females, and 5.9 to 17.4 mm for males. The relative growth of carapace length versus carapace width was isometric in males and negatively allometric in females. Relative growth of the chela length and abdomen width, compared to the carapace width, exhibited 2 phases, immature and mature, for males and females, respectively. The carapace widths at which 50% of males and females reached morphometric maturity were 13.6 and 8.5 mm, respectively. The mean value of the reproductive output was 3.6, the relative fecundity was 2041.91 eggs, and the relative size at the onset of sexual maturity was 0.4. As in most brachyuran species, the studied population of M. bicornutus showed a strong positive correlation between fecundity and body size. Differences in those parameters for previously studied populations from Venezuela, Jamaica and Brazil may be due to latitudinal or regional environmental effects.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.49 n.1 20142014-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572014000100009en10.4067/S0718-19572014000100009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Caribbean Sea fecundity relative growth sexual maturity spider crab
spellingShingle	Caribbean Sea fecundity relative growth sexual maturity spider crab Sal-Moyano,María Paz Lagos-Tobias,Ana Milena Felder,Darryl L Mantelatto,Fernando L Relative growth and reproductive parameters in a population of Microphrys bicornutus (Brachyura, Majoidea) from Bocas del Toro, Caribbean Sea, Panama
description	Size structure within a population, relative growth of secondary sexual characters in both sexes, and fecundity of females were assessed from field samples of Microphrys bicornutus in the vicinity of Bocas del Toro, Caribbean Sea, Panama. The study was based upon 135 individuals captured by hand and a kick net. Carapace width ranged from 6.5 to 14.4 mm for ovigerous females, 4.2 to 16 mm for non-ovigerous females, and 5.9 to 17.4 mm for males. The relative growth of carapace length versus carapace width was isometric in males and negatively allometric in females. Relative growth of the chela length and abdomen width, compared to the carapace width, exhibited 2 phases, immature and mature, for males and females, respectively. The carapace widths at which 50% of males and females reached morphometric maturity were 13.6 and 8.5 mm, respectively. The mean value of the reproductive output was 3.6, the relative fecundity was 2041.91 eggs, and the relative size at the onset of sexual maturity was 0.4. As in most brachyuran species, the studied population of M. bicornutus showed a strong positive correlation between fecundity and body size. Differences in those parameters for previously studied populations from Venezuela, Jamaica and Brazil may be due to latitudinal or regional environmental effects.
author	Sal-Moyano,María Paz Lagos-Tobias,Ana Milena Felder,Darryl L Mantelatto,Fernando L
author_facet	Sal-Moyano,María Paz Lagos-Tobias,Ana Milena Felder,Darryl L Mantelatto,Fernando L
author_sort	Sal-Moyano,María Paz
title	Relative growth and reproductive parameters in a population of Microphrys bicornutus (Brachyura, Majoidea) from Bocas del Toro, Caribbean Sea, Panama
title_short	Relative growth and reproductive parameters in a population of Microphrys bicornutus (Brachyura, Majoidea) from Bocas del Toro, Caribbean Sea, Panama
title_full	Relative growth and reproductive parameters in a population of Microphrys bicornutus (Brachyura, Majoidea) from Bocas del Toro, Caribbean Sea, Panama
title_fullStr	Relative growth and reproductive parameters in a population of Microphrys bicornutus (Brachyura, Majoidea) from Bocas del Toro, Caribbean Sea, Panama
title_full_unstemmed	Relative growth and reproductive parameters in a population of Microphrys bicornutus (Brachyura, Majoidea) from Bocas del Toro, Caribbean Sea, Panama
title_sort	relative growth and reproductive parameters in a population of microphrys bicornutus (brachyura, majoidea) from bocas del toro, caribbean sea, panama
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572014000100009
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Relative growth and reproductive parameters in a population of Microphrys bicornutus (Brachyura, Majoidea) from Bocas del Toro, Caribbean Sea, Panama

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