Larval cannibalism rates in the mangrove crab Ucides cordatus (Decapoda : Ocypodidae) under laboratory conditions

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dc.contributor.authorVentura, Robson
dc.contributor.authorSilva, Ubirata A. T. da
dc.contributor.authorPerbiche-Neves, Gilmar [UNESP]
dc.contributor.authorOstrensky, Antonio
dc.contributor.authorBoeger, Walter A.
dc.contributor.authorPie, Marcio R.
dc.contributor.institutionUniversidade Federal do Paraná (UFPR)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:54:07Z
dc.date.available2014-05-20T13:54:07Z
dc.date.issued2008-02-14
dc.description.abstractPredation of zoeas by megalopae of Ucides cordatus is frequently observed in the laboratory during larval rearing, a phenomenon that could considerably reduce the output of larviculture. Experiments were carried out in the present study to assess how the survivorship of larvae at the end of the larviculture is influenced by cannibalism by megalopae on the larvae of earlier stages, as well as on other megalopae. In addition, tests were performed to assess whether the adoption of different feeding protocols can decrease cannibalism rates. Experiments were carried out in plastic vials containing ocean water (salinity 25 g L-1) under controlled environmental conditions (26 degrees C and 16:8 h LD photoperiod). An ensemble analysis of all the developmental stages indicated that zoeal mortality rates were significantly higher in the presence of megalopae, a result that is consistent with cannibalism by megalopae. However, separate analysis for each developmental stage indicated that only zoea IV, V and VI show reduced survivorship. No cannibalism was detected among megalopae. Food supplementation using Artemia sp. at a density of 6 nauplii mL(-1) proved to be successful in reducing cannibalism rates, whereas supplementation at a lower density (0.3 nauplii mL(-1)) failed to show such an effect. The implications of these results for the larviculture of U. cordatus are discussed.en
dc.description.affiliationUniversidade Federal do Paraná (UFPR), Grp Integrado Aquiculture & Estudos Ambientais, BR-80035305 Curitiba, Parana, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Zool, Botucatu, SP, Brazil
dc.description.affiliationUniversidade Federal do Paraná (UFPR), Dept Zootecn, BR-80060000 Curitiba, Parana, Brazil
dc.description.affiliationUniversidade Federal do Paraná (UFPR), Dept Zool, BR-80060000 Curitiba, Parana, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Zool, Botucatu, SP, Brazil
dc.format.extent263-267
dc.identifierhttp://dx.doi.org/10.1111/j.1365-2109.2007.01887.x
dc.identifier.citationAquaculture Research. Oxford: Blackwell Publishing, v. 39, n. 3, p. 263-267, 2008.
dc.identifier.doi10.1111/j.1365-2109.2007.01887.x
dc.identifier.issn1355-557X
dc.identifier.urihttp://hdl.handle.net/11449/19326
dc.identifier.wosWOS:000252707800004
dc.language.isoeng
dc.publisherBlackwell Publishing
dc.relation.ispartofAquaculture Research
dc.relation.ispartofjcr1.475
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectUcides cordatusen
dc.subjectcannibalismen
dc.subjectzoeaen
dc.subjectmegalopaen
dc.titleLarval cannibalism rates in the mangrove crab Ucides cordatus (Decapoda : Ocypodidae) under laboratory conditionsen
dc.typeArtigo
dcterms.licensehttp://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2109/homepage/ForAuthors.html
dcterms.rightsHolderBlackwell Publishing
unesp.author.orcid0000-0002-6004-2822[5]
unesp.author.orcid0000-0001-8858-7552[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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Artigos - Zoologia - IBB