[MARMAM] New paper on organochlorine concentrations (PCBs, DDTs, HCHs, HCB and MIREX) in delphinids stranded at the northeastern Brazil.

Elitieri Neto neto.vet at gmail.com
Mon Dec 16 11:40:09 PST 2013


We are pleased to announce the publication of the following article:

Santos-Neto EB, Azevedo-Silva CE, Bisi TL, Santos J, Meirelles ACO,
Carvalho VL, Azevedo AF, Guimarães JE, Lailson-Brito J.
Organochlorine concentrations (PCBs, DDTs, HCHs, HCB and MIREX) in
delphinids stranded at the northeastern Brazil.
Science of the Total Environment 2014; 472:194 - 203.

ABSTRACT:

Organochlorine compounds are highly persistent in the environment, causing
bioaccumulation and biomagnification through the marine food chain. To
verify the bioaccumulation pattern of DDT and its metabolites, as well as
PCBs, Mirex, HCHs and HCB, samples of subcutaneous adipose tissue from 25
Guiana dolphins (*Sotalia guianensis*), two Fraser's dolphins (*Lagenodelphis
hosei*), two spinner dolphins (*Stenella longirostris*), one spotted
dolphin (*Stenella frontalis*), and one striped dolphin (*Stenella
coeruleoalba*) were analyzed. The collected specimens were found stranded
in northeastern Brazil between 2005 and 2011. The concentrations were
reported in μg.g−1 lip, varying from 0.02 to 17.3 for ΣPCB, from 0.003 to
5.19 forΣDDT, from 0.005 to 0.16 forΣHCH,from 0.002 to 0.16 for HCB, and
from 0.02 to 2.38 for Mirex. The PCBs dominated the bioaccumulation pattern
for both the Guiana and spinner dolphins; for the other species, DDT was
the major compound. A discriminant function analysis revealed the
differences in the organochlorine accumulation patterns between the Guiana
dolphin (*S. guianensis*) and the continental shelf/oceanic dolphins (*S.
frontalis* and *S. longirostris*). The results also show that the
concentrations of organochlorine compounds found in the delphinids in
northeastern Brazil were lower than the delphinids found in other regions
of Brazil, as well as other locations worldwide with intense agroindustrial
development and/or a larger population.

The full text and PDF is available at:

http://www.sciencedirect.com/science/article/pii/S0048969713012618

Best regards

-- 
Elitieri Neto

Medico Veterinário Mestre em Ciência Animal nos Trópicos
Doutorando em Ecologia e Evolução/ Universidade do Estado do Rio de Janeiro
Laboratório de Mamíferos Aquáticos e Bioindicadores "Profa. Izabel Gurgel"
(MAQUA)
Telefone (21) 8170-4483
Skype: elitieri.neto
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