Differential organotin sensitivity in twoLeucozoniaspecies from a ship traffic area in southeastern Brazil

Autor: Felipe C. Pedruzzi, Mary Rosa Rodrigues de Marchi, Dayana Moscardi dos Santos, Ana F. L. Godoi, Marcos Antônio Fernandez, Gabriela Carvalho Zamprogno, Letícia de Morais, Mônica Maria Pereira Tognella, Mércia Barcellos da Costa
Rok vydání: 2014
Předmět:
Zdroj: Marine Biology Research. 10:712-724
ISSN: 1745-1019
1745-1000
DOI: 10.1080/17451000.2013.850512
Popis: Tributyltin exposure is the primary cause of imposex development in gastropods, making them excellent bioindicators. The present research represents the first examination of butyltin (BT) contamination in surface sediments associated with imposex in Leucozonia nassa and L. ocellata in a harbour complex area in Espirito Santo, southeastern Brazil. The objectives of this study were to evaluate the organotin pollution in the area and to assess the sensitivity of both species to BT pollution through imposex development. Specimens were collected between 2007 and 2010 and the sediments were sampled in 2007. Imposex intensity was evaluated based on the percentage of imposexed females, the relative penis length index (RPLI) and the average value of the vas deferens sequence index (VDSI). BTs were analysed using gas chromatography equipped with a pulsed flame photometric detector (PFPD). The results demonstrated the occurrence of elevated concentrations of BTs in the sediment ranging from 383.7 to 7172.9 n...
Databáze: OpenAIRE
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