Reproductive variability of the Amazon River prawn, Macrobrachium amazonicum (Caridea, Palaemonidae): influence of life cycle on egg production

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dc.contributor.authorMeireles, Andrea L. [UNESP]
dc.contributor.authorValenti, Wagner C. [UNESP]
dc.contributor.authorMantelatto, Fernando L.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-12-03T13:11:24Z
dc.date.available2014-12-03T13:11:24Z
dc.date.issued2013-09-01
dc.description.abstractDiverse reproductive strategies may be adopted by different species of Macrobrachium prawns, and even among different populations of the same species. The present study evaluated the influence of differences in the reproductive strategies of two geographically isolated populations of Macrobachium amazonicum, upon female fecundity, reproductive output and the chemical content of prawns and eggs. One prawn population from Para only completes its life cycle in brackish water, whereas another from Mato Grosso do Sul only inhabits freshwater. Para female prawns exhibited a larger average size and weight and produced more eggs than females from Mato Grosso do Sul. However, the Mato Grosso do Sul population produced eggs that were larger in volume than those of females from the other population. Furthermore, eggs produced by Para prawns were composed primarily of water (56%), whereas those produced in Mato Grosso do Sul were composed mostly of organic matter (80%). This difference in the eggs' chemical compositions did not apply to the chemical compositions of the females, as individuals from both sites were composed primarily of water. Mato Grosso do Sul females invested a higher amount of energy in brood formation (14% of their wet weight) than individuals from Para (only 10%). It is possible that M. amazonicum populations show a higher degree of plasticity in their reproductive activity due to habitat conditions and genetic differences. Although the brackish population produces larger individuals, and exhibits higher fecundity, the freshwater population exhibited a higher reproductive investment. These results suggest a high reproductive capacity to adapt to different environmental conditions for this species, which should be considered in the context of aquaculture activities.en
dc.description.affiliationUniv Estadual Paulista, Unidade Sao Vicente, BR-11330900 Sao Vicente, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Fac Philosophy Sci & Letters Ribeirao Preto FFCLR, Dept Biol,Postgrad Program Comparat Biol, Lab Bioecol & Crustacean Systemat, BR-14040901 Ribeirao Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Unidade Sao Vicente, BR-11330900 Sao Vicente, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 155209/2006-0
dc.description.sponsorshipIdCNPq: 473050/2007-2
dc.description.sponsorshipIdCNPq: 471011/2011-8
dc.description.sponsorshipIdCNPq: 302748/2010-5
dc.description.sponsorshipIdCNPq: 500574/2003-0
dc.format.extent718-731
dc.identifierhttp://dx.doi.org/10.3856/vol41-issue4-fulltext-8
dc.identifier.citationLatin American Journal Of Aquatic Research. Valparaiso: Univ Catolica De Valparaiso, v. 41, n. 4, p. 718-731, 2013.
dc.identifier.doi10.3856/vol41-issue4-fulltext-8
dc.identifier.fileWOS000328337700008.pdf
dc.identifier.issn0718-560X
dc.identifier.urihttp://hdl.handle.net/11449/113091
dc.identifier.wosWOS:000328337700008
dc.language.isoeng
dc.publisherUniversidade Católica de Valparaíso
dc.relation.ispartofLatin American Journal of Aquatic Research
dc.relation.ispartofjcr0.482
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectMacrobrachium amazonicumen
dc.subjectreproductive potentialen
dc.subjectecological plasticityen
dc.subjectegg productionen
dc.subjectBrazilen
dc.titleReproductive variability of the Amazon River prawn, Macrobrachium amazonicum (Caridea, Palaemonidae): influence of life cycle on egg productionen
dc.typeArtigo
dcterms.rightsHolderUniv Catolica De Valparaiso
unesp.author.orcid0000-0002-8526-1052[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, São Vicentept

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