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标题：Cadmium concentrations in franciscana dolphin (Pontoporia blainvillei) from south brazilian coast
其他标题：Cadmium concentrations in franciscana dolphin (Pontoporia blainvillei) from south brazilian coast
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作者：Dorneles, Paulo Renato ; Lailson-Brito, José ; Secchi, Eduardo Resende 等
期刊名称：Brazilian Journal of Oceanography
印刷版ISSN：1679-8759
电子版ISSN：1982-436X
出版年度：2007
卷号：55
期号：3
页码：179-186
DOI：10.1590/S1679-87592007000300002
出版社：Instituto Oceanográfico da Universidade de São Paulo
摘要：Franciscana dolphins were used as source of information on the bioavailability of cadmium in the neritic waters off South Brazilian Coast. Liver samples obtained from 44 individuals incidentally captured off Rio Grande do Sul State were analyzed by electrothermal AAS. Cadmium concentrations, age, total weight and length of the analyzed dolphins varied between 39 and 4144 µg.kg-1 (wet weight), one and five years, 17.5 and 49.2 kg, and between 105.3 and 156.8 cm, respectively. Concerning hepatic cadmium concentrations of franciscanas, there was no significant difference between data raised by the present study and information from literature, regarding Rio de Janeiro State. The low cadmium concentrations observed may be attributed to the fact that loliginid squids constitute the main cephalopod prey for franciscanas. This study corroborates investigations on cadmium levels in Brazilian squids and strengthened the hypothesis that cephalopods of Loliginidae Family do not constitute important vectors of the transfer of cadmium to cetaceans.
关键词：Cádmio;Atlântico Sul Ocidental;Brasil;Franciscana;Boto;Cetáceo
其他关键词：Cadmium;Southwest Atlantic Ocean;Brazil;Franciscana;Dolphin;Cetacean