Phthalate ester and cholesterol profiles of blubber samples of the free-ranging Amazon River dolphin (Cetacea: Iniidae: Inia geoffrensis) in the Brazilian Amazon

IF 5.3 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Marine pollution bulletin Pub Date : 2024-11-02 DOI:10.1016/j.marpolbul.2024.117211

Lucas Fazardo de Lima , Isadora Nicole Lara Piccinin , Giulia Galani Martha , Susane Lopes , Thaís Carneiro Santos Rodrigues , Miriam Marmontel , Cristiane Kiyomi Miyaji Kolesnikovas , Marcelo Maraschin

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Abstract

This study assessed the exposure of free-ranging Amazon River dolphins (Inia geoffrensis) to phthalate esters (PAE) in a remote area of the Brazilian Amazon. Blubber samples were analyzed for four PAEs - dimethyl phthalate, diethyl phthalate, dibutyl phthalate, and di(2-ethylhexyl) phthalate - and cholesterol contents to evaluate potential metabolic disturbances. All dolphins were contaminated with at least two PAEs, with DEHP (242.16 ng/μL) and DBP (191.62 ng/μL) being the most frequent, detected in 93 % and 79 % of the sample, respectively. Significant positive correlations were found between DBP and DEP (r = 0.857), DEHP and DEP (r = 0.794), and DBP and body length (r = 0.642), suggesting bioaccumulation. Despite the cholesterol data not showing a correlation with the other findings, these results highlight PAE pollution in a supposedly pristine environment and their potential impact on the health and conservation of Amazon River dolphins' health and Amazonian ecosystem.

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巴西亚马逊河自由觅食的亚马逊河豚（鲸目：豚科：Inia geoffrensis）脂肪样本中的邻苯二甲酸酯和胆固醇概况。

本研究评估了巴西亚马逊河偏远地区自由放养的亚马逊河海豚（Inia geoffrensis）接触邻苯二甲酸酯（PAE）的情况。对鲸脂样本中的四种 PAE（邻苯二甲酸二甲酯、邻苯二甲酸二乙酯、邻苯二甲酸二丁酯和邻苯二甲酸二（2-乙基己酯））和胆固醇含量进行了分析，以评估潜在的代谢紊乱。所有海豚至少受到两种 PAE 的污染，其中 DEHP（242.16 纳克/微升）和 DBP（191.62 纳克/微升）最常见，分别在 93 % 和 79 % 的样本中检测到。在 DBP 和 DEP（r = 0.857）、DEHP 和 DEP（r = 0.794）以及 DBP 和体长（r = 0.642）之间发现了显著的正相关性，表明存在生物累积性。尽管胆固醇数据与其他研究结果没有相关性，但这些结果突显了在本应是原始环境中的 PAE 污染及其对亚马逊河海豚健康和亚马逊生态系统的潜在影响。

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来源期刊

Marine pollution bulletin 环境科学-海洋与淡水生物学

CiteScore

10.20

自引率

15.50%

发文量

1077

审稿时长

68 days

期刊介绍： Marine Pollution Bulletin is concerned with the rational use of maritime and marine resources in estuaries, the seas and oceans, as well as with documenting marine pollution and introducing new forms of measurement and analysis. A wide range of topics are discussed as news, comment, reviews and research reports, not only on effluent disposal and pollution control, but also on the management, economic aspects and protection of the marine environment in general.