First Record of Malformation in Seahorses Attributed to the Oil Spill off the Brazilian Coast in 2019

IF 3.6 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Environmental Toxicology and Chemistry Pub Date : 2024-07-09 DOI:10.1002/etc.5932

Rosana B. Silveira, José R. Santos Silva, Renan B. da Silva, Giovanni A. P. dos Santos

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Abstract

In 2019, there was an environmental catastrophe in Brazil, when more than 5000 tons of unknown origin crude oil invaded beaches and mangroves. Two years later, two monitoring areas were selected to study seahorses’ offspring: Massangana River estuary (apparently healthy area) and Cocaia Island (affected area). Thirty-six reproductive events of Hippocampus reidi (Syngnathidae) couples from these two areas were monitored to analyze the offspring. At the apparently healthy area, no newborns with malformations were found. However, the offspring from Cocaia Island showed a mean of 19.73% (±5.23) malformations in newborns. It is argued that the toxic/teratogenic effects of polycyclic aromatic hydrocarbons have affected the population in two ways: directly through the induction of mutations in the germ cells of the species and through a drastic reduction of the population (bottleneck effect) whose density observed today recovered through consanguineous couplings, potentiating deleterious genotypes in the offspring. Environ Toxicol Chem 2024;43:1996–2004. © 2024 SETAC

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2019 年巴西海岸石油泄漏事件导致海马畸形的首次记录。

2019 年，巴西发生了一场环境灾难，5000 多吨来源不明的原油侵入海滩和红树林。两年后，我们选择了两个监测区域来研究海马的后代：马桑加纳河河口（表面健康区域）和科卡亚岛（受影响区域）。在这两个地区监测了 36 对海马（Syngnathidae）的繁殖情况，并对后代进行了分析。在明显健康的地区，没有发现新生儿畸形。然而，Cocaia 岛的后代新生儿畸形率平均为 19.73%（±5.23）。有观点认为，多环芳烃的毒性/致畸效应通过两种方式影响了种群：直接通过诱导物种生殖细胞的突变，以及通过种群的急剧减少（瓶颈效应），如今观察到的种群密度通过近亲结婚得以恢复，从而加剧了后代的有害基因型。环境毒物化学 2024;00:1-9。© 2024 SETAC.

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来源期刊

Environmental Toxicology and Chemistry 环境科学-毒理学

CiteScore

7.40

自引率

9.80%

发文量

265

审稿时长

3.4 months

期刊介绍： The Society of Environmental Toxicology and Chemistry (SETAC) publishes two journals: Environmental Toxicology and Chemistry (ET&C) and Integrated Environmental Assessment and Management (IEAM). Environmental Toxicology and Chemistry is dedicated to furthering scientific knowledge and disseminating information on environmental toxicology and chemistry, including the application of these sciences to risk assessment.[...] Environmental Toxicology and Chemistry is interdisciplinary in scope and integrates the fields of environmental toxicology; environmental, analytical, and molecular chemistry; ecology; physiology; biochemistry; microbiology; genetics; genomics; environmental engineering; chemical, environmental, and biological modeling; epidemiology; and earth sciences. ET&C seeks to publish papers describing original experimental or theoretical work that significantly advances understanding in the area of environmental toxicology, environmental chemistry and hazard/risk assessment. Emphasis is given to papers that enhance capabilities for the prediction, measurement, and assessment of the fate and effects of chemicals in the environment, rather than simply providing additional data. The scientific impact of papers is judged in terms of the breadth and depth of the findings and the expected influence on existing or future scientific practice. Methodological papers must make clear not only how the work differs from existing practice, but the significance of these differences to the field. Site-based research or monitoring must have regional or global implications beyond the particular site, such as evaluating processes, mechanisms, or theory under a natural environmental setting.