A Preliminary Assessment of Metal Bioaccumulation in the Blue Crab, Callinectes danae S., from the Sao Vicente Channel, Sao Paulo State, Brazil

Abstract

The concentrations of metals in tissues of Callinectes danae were evaluated, aiming to determine the bioaccumulation process of this species. Gills presented the highest mean concentrations for most metals, except for Hg (<LOD) and Zn (13.293 μg g(-1)). According to results of the principal component analysis, the type of tissue was distinguished due to the concentrations of metals. An evaluation of individuals from other sites of the Santos Estuarine System (where the Sao Vicente Channel is included) would be important to confirm if this pattern of bioaccumulation can be extended to the population of C. danae of this estuary.

First assessment of trace metal concentration in mangrove crab eggs and other tissues, SE Brazil

“…Higher concentrations of Zn in muscles were also observed in the coastal crab Menippe mercenaria (Reed et al 2010). In contrast, U. cordatus of SE Brazil showed higher concentrations of Zn in hepatopancreas (Harris and Santos 2000) as seen in Callinectes danae (blue crab) of the same region (Bordon et al 2012).…”

“…Other U. cordatus populations from SE Brazil showed high Cu concentrations in the gills (Pinheiro et al 2012;Almeida et al 2014). According to these results, a study with blue crabs showed higher concentrations of Cd, Cr, Cu, and Pb in gills (Bordon et al 2012).…”

Metals and new approaches for biomonitoring

“…Rainbow (2002) conceptualized biomonitoring as the utilization of widely distributed organisms to gauge pollution levels, strategically leveraging the phenomenon wherein chemicals entering these organisms deposit markers, potentially the chemicals themselves, thereby providing a tangible indication of their exposure. Commonly, biomonitoring of metals is based on the evaluation of tissue bioaccumulation during short or long periods, depending on the life cycle of the organisms (Bordon et al, 2012a(Bordon et al, , 2012b(Bordon et al, , 2016. Some studies have included ecological behaviors and/or biomarkers of effect to corroborate the analytical findings (Araujo et al, 2020;Marinsek et al, 2022).…”

Caracterização cinética e molecular da (Na>sup<+>/sup<, K>sup<+>/sup<)-ATPase do tecido branquial de >i<Callinectes danae>/i< submetido a estresse por cobalto

“…Callinectes danae é uma das várias espécies de caranguejos recomendadas como biomonitor ambiental, capaz de fornecer respostas biológicas em áreas contaminadas (Bordon et al 2012(Bordon et al , 2015. A sobrevivência desses invertebrados depende da qualidade ambiental do estuário, sendo assim, as concentrações de metais nos tecidos dos siris-azuis devem ser monitoradas, já que esta espécie é um recurso pesqueiro importante nas comunidades locais (Severino-Rodrigues et al 2001).…”

“…Para monitorar a poluição por metais tem sido utilizadas determinadas espécies que são conhecidas como bioindicadores, já que os poluentes químicos ao entrar no organismo deixam marcas que refletem essa exposição (Rainbow, 2002;Bordon et al 2012Bordon et al , 2015Magalhães et al, 2015). O biomonitoramento pode oferecer informações sobre as concentrações das substâncias químicas naturais e antrópicas que entraram e permaneceram nos organismos, bem como os efeitos induzidos, refletindo o grau de contaminação no ambiente (Bordon et al, 2015).…”