Morphometric analysis of the mud crab Hexapanopeus paulensis Rathbun, 1930 (Decapoda, Xanthoidea) from the southeastern coast of Brazil

Silva,Thiago Elias; Fumis,Patricia Bianca; Almeida,Ariadine Cristine; Bertini,Giovana; Fransozo,Vivian

dc.creator	Silva,Thiago Elias
dc.creator	Fumis,Patricia Bianca
dc.creator	Almeida,Ariadine Cristine
dc.creator	Bertini,Giovana
dc.creator	Fransozo,Vivian
dc.date	2014-07-01
dc.date.accessioned	2019-05-03T13:27:36Z
dc.date.available	2019-05-03T13:27:36Z
dc.identifier	https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-560X2014000300016
dc.identifier.uri	http://revistaschilenas.uchile.cl/handle/2250/88001
dc.description	In this study, we estimated the size at onset of maturity (carapace width, CW50) and analyzed the relative growth of some body parts and the heterochely of the mud crab Hexapanopeus paulensis. A total of 800 crabs were collected, from January 1998 to December 1999, on the southeastern coast of Brazil. Each specimen was sexed and measured. CW50 was estimated to be 6.7 mm in males and 6.3 mm in females. Carapace length growth was negatively allometric in both sexes. Cheliped length and height was positively allometric for both males and females. Gonopod growth was isometric (b = 1) and negatively allometric (b < 1) in both juvenile and adult males, respectively. Abdomen relative growth was positively allometric (b > 1) for both juvenile and adult females. In males and females, the right cheliped was larger and higher than the left cheliped. Such heterochely may be related to the feeding habits of H. paulensis. Most xanthoid crabs, including the studied species, feed upon mollusks with dextral shells, which require complicated handling. In this sense, the heterochely in H. paulensis might facilitate the food manipulation.
dc.format	text/html
dc.language	en
dc.publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
dc.rights	info:eu-repo/semantics/openAccess
dc.source	Latin american journal of aquatic research v.42 n.3 2014
dc.subject	Hexapanopeus paulensis
dc.subject	Panopeidae
dc.subject	sexual maturity
dc.subject	sexual secondary characters
dc.subject	bycatch
dc.subject	Ubatuba
dc.subject	southeastern
dc.subject	Brazil
dc.title	Morphometric analysis of the mud crab Hexapanopeus paulensis Rathbun, 1930 (Decapoda, Xanthoidea) from the southeastern coast of Brazil

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Latin American Journal of Aquatic Research
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