Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/984898
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dc.contributor.authorLIMA, J. de F.pt_BR
dc.contributor.authorSILVA, L. M. A. dapt_BR
dc.contributor.authorSILVA, T. C. dapt_BR
dc.contributor.authorGARCIA, J. da S.pt_BR
dc.contributor.authorPEREIRA, I. da S.pt_BR
dc.contributor.authorAMARAL, K. D. S.pt_BR
dc.date.accessioned2014-04-22T11:11:11Zpt_BR
dc.date.available2014-04-22T11:11:11Zpt_BR
dc.date.created2014-04-22pt_BR
dc.date.issued2014pt_BR
dc.identifier.citationActa Amazonica, Manaus, v. 44, n. 2, p. 245-254, June 2014.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/984898pt_BR
dc.descriptionMacrobrachium amazonicum is an indigenous prawn vastly distributed in basins of South America, widely exploited by artisanal fisheries in northern and northeastern Brazil and, with great potential for aquaculture. This study aimed to investigate general aspects of population structure and reproductive characteristics (size at first maturity, fecundity and reproductive output) of M. amazonicum from two important areas to artisanal prawn fishing located at the mouth of the Amazon River, State of Amapá. The specimens were captured using 20 handcrafted traps called ?matapi?. A number of 5,179 prawns were captured, 2,975 females and 2,195 males resulting in 1.35:1 female to male ratio. Santana Island and Mazagão Velho showed females predominated in the population. A reproductive peak period was observed from January to April/2009 and in December/2010, coinciding with the period of higher rainfall. The recruitment peak occurred in June and July/2009. Egg-bearing females ranged in size (carapace length) from 11.10 to 29.6 mm. Fecundity increased with female size and reached up to 7,417 eggs. This amount of eggs is considered low if compared with other Macrobrachium estuarine species. Mean egg volume increased gradually from 0.121 to 0.24 mm3 during embryogenesis, representing 68.5% of overall increase from Stage I to Stage III. Eggs of M. amazonicum are small; this is typical for Macrobrachium species, which depends on brackish water to complete the larval development. Irrespective of female size, reproductive output of M. amazonicum varied between 4.8 and 21.85% of their body weight into eggs production.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectPalaemonid eggspt_BR
dc.subjectFirst maturationpt_BR
dc.subjectMorphometric relationshippt_BR
dc.subjectOvos Palaemonidpt_BR
dc.subjectPrimeira maturaçãopt_BR
dc.subjectFecundidadept_BR
dc.subjectRelação morfométricapt_BR
dc.titleReproductive aspects of Macrobrachium amazonicum (Decapoda: Palaemonidae) in the State of Amapá, Amazon River mouth.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-02-08T11:11:11Zpt_BR
dc.subject.thesagroReproduçãopt_BR
dc.subject.nalthesaurusfecunditypt_BR
dc.subject.nalthesaurusreproductionpt_BR
riaa.ainfo.id984898pt_BR
riaa.ainfo.lastupdate2017-02-08pt_BR
dc.contributor.institutionJO DE FARIAS LIMA, CPAF-APpt_BR
dc.contributor.institutionLUIS MAURICIO ABDON DA SILVA, INSTITUTO DE PESQUISAS CIENTIFICAS E TECNOLÓGICAS DO ESTADO DO AMAPÁeng
dc.contributor.institutionTHIBÉRIO CARVALHO DA SILVA, UNIVERSIDADE DO OESTE DO PARANÁeng
dc.contributor.institutionJAMILE DA SILVA GARCIA, UNIVERSIDADE DO ESTADO DO AMAPÁeng
dc.contributor.institutionILANA DA SILVA PEREIRA, UNIVERSIDADE DO ESTADO DO AMAPÁeng
dc.contributor.institutionKARLIA DALLA SANTA AMARAL, CPAF-AP.eng
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