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First report on metal and metalloid contamination of Ampullae of Lorenzini in sharks: A case study employing the Brazilian sharpnose shark Rhizoprionodon lalandii from Southeastern Brazil as an ecotoxicological model
Marine Pollution Bulletin ( IF 5.3 ) Pub Date : 2022-04-22 , DOI: 10.1016/j.marpolbul.2022.113671
Isabel Quental Willmer 1 , Natascha Wosnick 2 , Rafael Christian Chávez Rocha 3 , Tatiana Dillenburg Saint'Pierre 3 , Marcelo Vianna 4 , Rachel Ann Hauser-Davis 5
Affiliation  

Metal contamination has never been assessed in Ampullae of Lorenzini. This study employed Rhizoprionodon lalandii, as an ecotoxicological model to investigate potential metal accumulation in Ampullae of Lorenzini jelly. No differences between sexes were observed regarding jelly metal concentrations at Rio das Ostras (RJ) or Santos (SP). Statistically significant correlations were noted between total lengths (TL) and condition factors and several metals at both sampling sites, demonstrating the potential for Chondrichthyan sensory capacity disruption and possible effects on foraging success. Maternal metal transfer to Ampullae jelly was confirmed. Rhizoprionodon lalandii is thus, a good model to assess Ampullae of Lorenzini contamination, as this electrosensory organ seems to be highly vulnerable to metal contamination.



中文翻译:

关于鲨鱼中洛伦兹尼壶腹金属和准金属污染的第一份报告:以巴西东南部的巴西尖鼻鲨 Rhizoprionodon lalandii 作为生态毒理学模型的案例研究

Lorenzini 的 Ampullae 从未评估过金属污染。本研究采用Rhizoprinodon lalandii作为生态毒理学模型来研究Lorenzini 果冻壶腹中潜在的金属积累。Rio das Ostras (RJ) 或 Santos (SP) 的果冻金属浓度没有观察到性别之间的差异。两个采样点的总长度 (TL) 和条件因素以及几种金属之间存在统计学上显着的相关性,这表明软骨鱼类感官能力受到破坏的可能性以及对觅食成功的可能影响。证实了母体金属转移到壶腹果冻。兰氏根瘤菌因此,这是评估 Lorenzini 壶腹污染的一个很好的模型,因为这种电感应器官似乎非常容易受到金属污染。

更新日期:2022-04-23
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