Effects of metal contamination in situ on osmoregulation and oxygen consumption in the mudflat fiddler crab Uca rapax (Ocypodidae, Brachyura)

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dc.contributor.authorCapparelli, Mariana V.
dc.contributor.authorAbessa, Denis M. [UNESP]
dc.contributor.authorMcNamara, John C.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-11-26T16:37:45Z
dc.date.available2018-11-26T16:37:45Z
dc.date.issued2016-07-01
dc.description.abstractThe contamination of estuaries by metals can impose additional stresses on estuarine species, which may exhibit a limited capability to adjust their regulatory processes and maintain physiological homeostasis. The mudflat fiddler crab Uca rapax is a typical estuarine crab, abundant in both pristine and contaminated areas along the Atlantic coast of Brazil. This study evaluates osmotic and ionic regulatory ability and gill Na+/K+-ATPase activity in different salinities (<0.5, 25 and 60 parts per thousand S) and oxygen consumption rates at different temperatures (15, 25 and 35 degrees C) in U. rapax collected from localities along the coast of Sao Paulo State showing different histories of metal contamination (most contaminated Ilha Diana, Santos > Rio Itapanhau, Bertioga > Picinguaba, Ubatuba [pristine reference site]). Our findings show that the contamination of U. rapax by metals in situ leads to bioaccumulation and induces biochemical and physiological changes compared to crabs from the pristine locality. U. rapax from the contaminated sites exhibit stronger hyper- and hypo-osmotic regulatory abilities and show greater gill Na+/K+-ATPase activities than crabs from the pristine site, revealing that the underlying biochemical machinery can maintain systemic physiological processes functioning well. However, oxygen consumption, particularly at elevated temperatures, decreases in crabs showing high bioaccumulation titers but increases in crabs with low/moderate bioaccumulation levels. These data show that U. rapax chronically contaminated in situ exhibits compensatory biochemical and physiological adjustments, and reveal the importance of studies on organisms exposed to metals in situ, particularly estuarine invertebrates subject to frequent changes in natural environmental parameters like salinity and temperature. (C) 2016 Elsevier Inc All rights reserved.en
dc.description.affiliationUniv Sao Paulo, Fac Filosofia Ciancias & Letras Ribeirao Preto, Dept Biol, Ave Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Campus Sao Vicente, BR-11380972 Sao Vicente, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Ctr Biol Marinha, BR-11600000 Sao Sebastiao, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Campus Sao Vicente, BR-11380972 Sao Vicente, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdFAPESP: 2011/22537-0
dc.description.sponsorshipIdFAPESP: 2011/08065-9
dc.description.sponsorshipIdCNPq: CNPq 300662/2009-2
dc.description.sponsorshipIdCNPq: CNPq 308649/2011
dc.description.sponsorshipIdCAPES: 33002029031P8
dc.format.extent102-111
dc.identifierhttp://dx.doi.org/10.1016/j.cbpc.2016.03.004
dc.identifier.citationComparative Biochemistry And Physiology C-toxicology & Pharmacology. New York: Elsevier Science Inc, v. 185, p. 102-111, 2016.
dc.identifier.doi10.1016/j.cbpc.2016.03.004
dc.identifier.fileWOS000377728200012.pdf
dc.identifier.issn1532-0456
dc.identifier.urihttp://hdl.handle.net/11449/161596
dc.identifier.wosWOS:000377728200012
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofComparative Biochemistry And Physiology C-toxicology & Pharmacology
dc.relation.ispartofsjr0,798
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectEnvironmental contamination
dc.subjectMetal pollution
dc.subjectOsmoregulation
dc.subjectOxygen consumption
dc.subjectGill Na+/K+-ATPase activity
dc.subjectFiddler crab
dc.subjectUca rapax
dc.titleEffects of metal contamination in situ on osmoregulation and oxygen consumption in the mudflat fiddler crab Uca rapax (Ocypodidae, Brachyura)en
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.

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