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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Habitat monitoring and genotoxicity in Ucides cordatus (Crustacea: Ucididae), as tools to manage a mangrove reserve in southeastern Brazil

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Pinheiro, M. A. A. [1, 2] ; Duarte, L. F. A. [1, 2] ; Toledo, T. R. [1, 2] ; Adam, M. L. [2, 3] ; Torres, R. A. [2, 4]
Total Authors: 5
[1] UNESP Univ Estadual Paulista, Lab Biol Crustaceos Praca Infante D Henrique, BR-11330900 Sao Paulo - Brazil
[2] Res Grp Crustacean Biol CRUSTA, Sao Paulo - Brazil
[3] UFPE Univ Fed Pernambuco, Ctr Acad Vitoria, BR-55608680 Vitoria De Santo Antao, PE - Brazil
[4] UFPE Univ Fed Pernambuco, Lab Genom Evolut & Ambiental, Ctr Ciencias Biol, Dept Zool, Recife, PE - Brazil
Total Affiliations: 4
Document type: Journal article
Source: ENVIRONMENTAL MONITORING AND ASSESSMENT; v. 185, n. 10, p. 8273-8285, OCT 2013.
Web of Science Citations: 21

In Brazil, the state of So Paulo contains both preserved areas (Jur,ia-Itatins Ecological Station) and extremely impacted ones (Cubato Municipality). This study evaluated the concentrations of five metals (Cu, Cd, Cr, Pb, and Hg) in two mangroves with different levels of anthropogenic impact and the apparent genotoxicity to Ucides cordatus. Water and sediment samples were obtained, and metal concentrations were determined with an atomic absorption spectrophotometer. The genotoxic impact was quantified based on the number of micronucleated cells per 1,000 analyzed (MNaEuro degrees), using hemolymph slides stained with Giemsa. Metal concentrations in water were below the detection limit, except for lead, although no significant difference was observed between the areas (P > 0.05). Sediment from Cubato had higher concentrations of Cd, Pb, Cr, and Cu than sediment from Jur,ia-Itatins (P < 0.05), but no significant differences in metal concentrations were detected among depth strata of the sediment (P > 0.05). Crabs from Cubato had a 2.6 times higher mean frequency of micronucleated cells (5.2 +/- 1.8 MNaEuro degrees) than those from Jur,ia-Itatins (2.0 +/- 1.0 MNaEuro degrees; P < 0.0001). The more-polluted conditions found in the mangrove sediments of Cubato were reflected in the micronucleus assay, demonstrating their genotoxic effect; however, genetic damage should be attributed to a synergistic effect with other kinds of pollutants previously recorded in different environments of Cubato. U. cordatus proved to be an excellent bioindicator of mangrove pollution. This study established, for the first time, the normal frequency of MNaEuro degrees in a population of this species within an ecological station. (AU)

FAPESP's process: 09/14725-1 - Project Uçá III - Genotoxic impact on population of uçá-crab, Ucides cordatus (Linnaeus, 1763) (Crustacea, Brachyura, Ucididae): evaluation and correlation with of heavy metal concentration in five mangroves of the São Paulo State
Grantee:Marcelo Antonio Amaro Pinheiro
Support Opportunities: Regular Research Grants