Reproduction and population structure of Achelous spinimanus (Crustacea: Portunoidea) in the northern coast of São Paulo, Brazil, and influence of environmental factors

dc.contributor.authorBernardo, Camila Hipolito [UNESP]
dc.contributor.authorBernardes, Veronica Pereira [UNESP]
dc.contributor.authorda Silva, Thiago Elias [UNESP]
dc.contributor.authorde Sousa, Aline Nonato [UNESP]
dc.contributor.authorTaddei, Fabiano Gazzi
dc.contributor.authorFransozo, Adilson [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade do Estado do Amazonas
dc.date.accessioned2020-12-12T02:31:57Z
dc.date.available2020-12-12T02:31:57Z
dc.date.issued2020-09-01
dc.description.abstractWe studied the reproduction and population structure of a population of Achelous spinimanus in the region of Ubatuba, Brazil. We collected them monthly, in 2000, in eight sites of different depths (5 to 40 m). The size at the onset of sexual maturity was estimated by the carapace width and the population structure was analyzed based on the size frequency distribution. In total, we collected 402 individuals: 28 juveniles, 105 males and 269 females. In 2000, A. spinimanus reproduced continuously and had a single peak in September–October. This timing contrasts with what has been observed in other populations and may be a local strategy to decrease the interspecific competition with other swimming crabs. The individuals of A. spinimanus from Ubatuba in 2000 were smaller (16.8–93.5 mm) than those from Fortaleza Bay (near Ubatuba) in 1988–1989 (19.0–97.3 mm). We suggest that intense trawling pressure may have contributed to a reduction in the size of individuals.en
dc.description.affiliationGroup of Studies on Biology Ecology and Culture of Crustaceans (NEBECC) Department of Zoology Biosciences Institute Universidade Estadual Paulista UNESP
dc.description.affiliationAmazon Crustacean Studies Laboratory (LECAM) Parintins Center for Advanced Studies (CESP/UEA) Universidade do Estado do Amazonas, Estrada Odovaldo Novo, Km 1
dc.description.affiliationUnespGroup of Studies on Biology Ecology and Culture of Crustaceans (NEBECC) Department of Zoology Biosciences Institute Universidade Estadual Paulista UNESP
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 94/4878-8
dc.description.sponsorshipIdFAPESP: 97/12106-3
dc.description.sponsorshipIdFAPESP: 97/12107-0
dc.description.sponsorshipIdFAPESP: 97/12108-6
dc.description.sponsorshipIdFAPESP: 98/3134-6
dc.format.extent1373-1383
dc.identifierhttp://dx.doi.org/10.2478/s11756-019-00399-5
dc.identifier.citationBiologia, v. 75, n. 9, p. 1373-1383, 2020.
dc.identifier.doi10.2478/s11756-019-00399-5
dc.identifier.issn1336-9563
dc.identifier.issn0006-3088
dc.identifier.scopus2-s2.0-85076879034
dc.identifier.urihttp://hdl.handle.net/11449/201417
dc.language.isoeng
dc.relation.ispartofBiologia
dc.sourceScopus
dc.subjectBycatch
dc.subjectReproductive females
dc.subjectUbatuba
dc.subject“Siri-candeia”
dc.titleReproduction and population structure of Achelous spinimanus (Crustacea: Portunoidea) in the northern coast of São Paulo, Brazil, and influence of environmental factorsen
dc.typeArtigo
unesp.author.orcid0000-0003-3979-2642[1]

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