Durante Cristian Alberto, Moura Reis Barbara Manhaes, Azevedo Alexandre, Crespo Enrique Alberto, Lailson-Brito José
Centro para el Estudio de Sistemas Marinos (CESIMAR) - Centro Nacional Patagónico - CONICET, Bv. Brown 2915, U9120ACD, Puerto Madryn, Chubut, Argentina; Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Bv. Brown 2915, U9120ACD, Puerto Madryn, Chubut, Argentina.
Laboratório de Mamíferos Aquáticos e Bioindicadores "Profa. Izabel Gurgel" (MAQUA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, 20530-013, Rio de Janeiro, RJ, Brazil.
Mar Pollut Bull. 2020 Jan;150:110674. doi: 10.1016/j.marpolbul.2019.110674. Epub 2019 Nov 11.
The odontocetes are at the top of the trophic chains, and because they accumulate numerous compounds throughout life, they are considered as bioindicators of ecosystem contamination. This study aimed to analyze the concentrations of trace elements of the short-beak common dolphin (Delphinus delphis) and Fraser's dolphin (Lagenodelphis hosei) from the Southwestern Atlantic Ocean. Regardless of the tissue and the species, the average concentration of silver was the lowest. The highest concentration in the kidney was cadmium, while in the liver it varied between selenium and total mercury according to the species. The bioconcentration process was present in relation with the age and standard length in common dolphins. Additionally, Se-HgT molar ratios differed among species. This study provides new information on the current state of pollution by trace elements in common and Fraser's dolphins in the Southwest Atlantic, and it serves as a complement to the work in tropical waters.
齿鲸处于食物链顶端，由于它们在一生中会积累多种化合物，因此被视为生态系统污染的生物指示物。本研究旨在分析西南大西洋短吻普通海豚（瓶鼻海豚）和弗氏海豚体内微量元素的浓度。无论组织和物种如何，银的平均浓度最低。肾脏中浓度最高的是镉，而肝脏中根据物种不同，最高浓度在硒和总汞之间变化。普通海豚的生物富集过程与年龄和标准体长有关。此外，不同物种之间的硒 - 总汞摩尔比也不同。本研究提供了关于西南大西洋普通海豚和弗氏海豚当前微量元素污染状况的新信息，并且是对热带水域相关研究工作的补充。
