[MARMAM] new manuscript on contamination levels of small cetaceans in Brazil

Marcos Santos sotalia at gmail.com
Sat Oct 9 06:02:08 PDT 2010

Dear Marmamers:

The following manuscript (with abstract attached) was recently published.
PDf requests with Dr. Marcos Santos (sotalia at gmail.com).

Yogui, G.T.; Santos, M.C. de O.; Bertozzi, C.P. & Montone, R.C. 2010. Levels
of persistent organic pollutants and residual pattern of DDTs in small
cetaceans from the coast of Sao Paulo, Brazil. Marine Pollution Bulletin,
60: 1862-1867.

The state of Sao Paulo is the most developed area in Brazil and was impacted
by persistent organic pollutants for several decades. This study
investigated organochlorines in five species of small cetaceans (Pontoporia
blainvillei, Stenella frontalis, Sotalia guianensis, Tursiops truncatus and
Steno bredanensis) found dead along the coast of Sao Paulo between 1997 and
2003. DDTs (15.9 µg -1 lipid; mean for all pooled individuals) and PCBs
(8.08 µg -1) exhibited the highest concentrations in the animals, reflecting
large amounts formerly used in Brazil. Lower levels of mirex 0.149 µg -1),
HCB (0,051 µg -1), CHLs (0.008 µg -1) and HCHs (0.007 µg -1) were detected
in all species. Residual patterns of DDTs in dolphins suggests that o,p’-DDT
is more recalcitrant than p,p’-DDT in the body of the animals and/or the
environment. In contrast to p,p’-DDT, residues of o-p’-DDT seem to be
preferentially converted into o,p’-DDD rather than o,p’-DDE.

Dr. Marcos Cesar de Oliveira Santos

Projeto Atlantis, Laboratorio de Biologia da Conservacao de Cetaceos
Programa de Pos-Graduação em Zoologia, Departamento de Zoologia, Instituto
de Biociencias,
Universidade Estadual Paulista "Julio de Mesquita Filho" (UNESP), Campus Rio
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