High organochlorine accumulation in blubber of Guiana dolphin, Sotalia guianensis, from Brazilian coast and its use to establish geographical differences among populations
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- 作者：J. Lailson-Brito ; P.R. Dorneles ; C.E. Azevedo-Silva ; A.F. Azevedo ; L.G. Vidal ; R.C. Zanelatto ; C.P.C. Lozinski ; A. Azeredo ; A.B.L. Fragoso ; H.A. Cunha ; J.P.M. Torres ; O. Malm
- 关键词：Organochlorines ; Discriminant analysis ; Guiana dolphins ; Brazil
- 刊名：Environmental Pollution
- 出版年：2010
- 出版时间：May 2010
- 年：2010
- 卷：158
- 期：5
- 页码：1800-1808
- 全文大小：460 K
文摘
Blubber samples from 33 Guiana dolphins (Sotalia guianensis) from three estuaries (Guanabara, Sepetiba/Ilha Grande and Paranaguá Bays) of Southern and Southeastern Brazil were analyzed for organochlorine compounds (DDTs, PCBs and HCB). The sampled individuals were incidentally captured in gillnet fishery between 1995 and 2005. The concentrations (in ng/g lipids) varied from 652 to 23 555 for ΣDDT; from 765 to 99 175 for ΣPCB; and from <4.4 to 156 for HCB. The results have shown that cetaceans from Brazil present organochlorine concentrations that are comparable to those reported for highly industrialized regions of Northern Hemisphere. Using discriminant analysis it was possible to verify that the dolphin populations from the three bays present different organochlorine accumulation patterns. This feature allows the use of this set of pollutants as an auxiliary tool for identification of different populations of the species off Brazilian Coast.