Efficiency in heavy metal purge in crustaceans during the ecdysis

Romulo José Ramos (), Carlos Eduardo Tadokoro, Levy Carvalho Gomes and Gustavo Rocha Leite
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Romulo José Ramos: Postgraduate Program in Ecosystem Ecology-University Vila Velha
Carlos Eduardo Tadokoro: Postgraduate Program in Ecosystem Ecology-University Vila Velha
Levy Carvalho Gomes: Postgraduate Program in Ecosystem Ecology-University Vila Velha
Gustavo Rocha Leite: Federal University of Espírito Santo

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2021, vol. 23, issue 10, No 29, 14878-14907

Abstract: Abstract An abundant population of Ucides cordatus swamp crabs is present at Lameirão Ecological Station (Brazil), a tropical ecosystem man-made with discharges of domestic, industrial and agricultural pollutants. Concentrations of heavy metals in water, sediment and muscle tissues, gills, hepatopancreas and exoskeleton present in crustaceans were analyzed. The results showed variations in the concentrations of all metals according to precipitation, tide and physicochemical factors. This fact possibly influenced the results of bioconcentration (BFC > 1), indicating a tendency of bioaccumulation according to environmental conditions. We also found a high accumulation of metals in female specimens. However, regardless of gender, we found a reduction in metal concentrations in all tissues analyzed during the period of ecdysis. In this study, we highlight the ecological role of U. cordatus in mangrove ecosystems and its importance in transferring pollutants to the upper trophic levels of the mangrove community, and even to man.

Keywords: Ucides cordatus; Crustacean; Ecdysis; Heavy metals; Bioconcentration; Mangrove (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s10668-021-01277-4

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