Population structure, sex ratio and growth of the seabob shrimp Xiphopenaeus kroyeri (Decapoda, Penaeidae) from coastal waters of southern Brazil

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dc.contributor.authorGrabowski, Raphael Cezar [UNESP]
dc.contributor.authorSimoes, Sabrina Morilhas [UNESP]
dc.contributor.authorCastilho, Antonio Leao [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:56:24Z
dc.date.available2015-03-18T15:56:24Z
dc.date.issued2014-01-01
dc.description.abstractThis study evaluated the growth and population structure of Xiphopenaeus kroyeri in Babitonga Bay, southern Brazil. Monthly trawls were conducted from July 2010 through June 2011, using a shrimp boat outfitted with double-rig nets, at depths from 5 to 17 m. Differences from the expected 0.5 sex ratio were determined by applying a Binomial test. A von Bertalanffy growth model was used to estimate the individual growth, and longevity was calculated using its inverted formula. A total of 4,007 individuals were measured, including 1,106 juveniles (sexually immature) and 2,901 adults. Females predominated in the larger size classes. Males and females showed asymptotic lengths of 27.7 mm and 31.4 mm, growth constants of 0.0086 and 0.0070 per day, and longevities of 538 and 661 days, respectively. The predominance of females in larger size classes is the general rule in species of Penaeidae. The paradigm of latitudinal-effect does not appear to apply to seabob shrimp on the southern Brazilian coast, perhaps because of the small proportion of larger individuals, the occurrence of cryptic species, or the intense fishing pressure in this region. The longevity values are within the general range for species of Penaeidae. The higher estimates for longevity in populations at lower latitudes may have occurred because of the growth constants observed at these locations, resulting in overestimation of this parameter.en
dc.description.affiliationSao Paulo State Univ, UNESP, Biosci Inst Botucatu, Dept Zool, Sao Paulo, Brazil
dc.description.affiliationSao Paulo State Univ, UNESP, Fac Sci, Dept Biol Sci, Bauru, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, UNESP, Biosci Inst Botucatu, Dept Zool, Sao Paulo, Brazil
dc.description.affiliationUnespSao Paulo State Univ, UNESP, Fac Sci, Dept Biol Sci, Bauru, SP, Brazil
dc.description.sponsorshipFundação para o Desenvolvimento da UNESP (FUNDUNESP)
dc.description.sponsorshipPro Reitoria de Pesquisa - PROPE
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdFUNDUNESP: 1214/2010 - DFP
dc.description.sponsorshipIdFAPESP: 10/50188-8
dc.format.extent253-269
dc.identifierhttp://dx.doi.org/10.3897/zookeys.457.6682
dc.identifier.citationZookeys. Sofia: Pensoft Publ, n. 457, p. 253-269, 2014.
dc.identifier.doi10.3897/zookeys.457.6682
dc.identifier.fileWOS000345621200015.pdf
dc.identifier.issn1313-2989
dc.identifier.urihttp://hdl.handle.net/11449/117538
dc.identifier.wosWOS:000345621200015
dc.language.isoeng
dc.publisherPensoft Publ
dc.relation.ispartofZookeys
dc.relation.ispartofjcr1.079
dc.relation.ispartofsjr0,533
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectAsymptotic lengthen
dc.subjectvon Bertalanffyen
dc.subjectlongevityen
dc.subjectDendrobranchiataen
dc.titlePopulation structure, sex ratio and growth of the seabob shrimp Xiphopenaeus kroyeri (Decapoda, Penaeidae) from coastal waters of southern Brazilen
dc.typeArtigo
dcterms.rightsHolderPensoft Publ
unesp.author.lattes5275027284030599[3]
unesp.author.orcid0000-0003-0001-9054[3]
unesp.author.orcid0000-0001-8597-8937[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentCiências Biológicas - FCpt

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Artigos - Zoologia - IBB
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