Departamento de Sistemática e Ecologia, Centro de Ciências Exatas e da Natureza - Universidade Federal da Paraíba, Cidade Universitária, João Pessoa, PB 58051-900, Brazil; Laboratório de Oceanografia, Instituto Federal de Educação, Ciência e Tecnologia da Paraíba, Campus Cabedelo, Rua Santa Rita de Cássia, 1900, Jardim Camboinha, Cabedelo, PB 58310-772, Brazil.
Laboratório de Oceanografia, Instituto Federal de Educação, Ciência e Tecnologia da Paraíba, Campus Cabedelo, Rua Santa Rita de Cássia, 1900, Jardim Camboinha, Cabedelo, PB 58310-772, Brazil.
Mar Pollut Bull. 2020 Sep;158:111214. doi: 10.1016/j.marpolbul.2020.111214. Epub 2020 Jun 20.
Microplastics (<5 mm) are present in marine ecosystems worldwide where they can be ingested by a wide range of organisms from different trophic levels. In this study we analyzed the gastrointestinal tract of 443 specimens of Stellifer brasiliensis (124 juveniles, 254 subadults, and 65 adults) sampled in tropical beaches adjacent to the Paraíba River estuary. We found 1-3 microplastics in 42 fishes (9.48%), averaging 1.31 ± 0.52 microplastics per fish. The number of ingested microplastics by the different ontogenetic stages was statistically similar, but the adults had a higher ingestion frequency (13.8%). Among subadults, the condition factor of fishes that ingested microplastics was significantly smaller (p < 0.05) than those that had not ingested them. The ingestion of microplastics by the different ontogenetic stages of S. brasiliensis reflects the availability of this pollutant in the studied environment and highlights the vulnerability of fishes and other organisms through food webs.
微塑料（<5 毫米）存在于全球的海洋生态系统中，可被不同营养级别的各种生物摄入。在本研究中，我们分析了在毗邻 Paraíba 河口的热带海滩采集的 443 个 Stellifer brasiliensis 样本的胃肠道。我们在 42 条鱼中发现了 1-3 个微塑料（9.48%），每条鱼平均含有 1.31 ± 0.52 个微塑料。不同个体发育阶段摄入的微塑料数量在统计学上没有显著差异，但成年鱼的摄入频率更高（13.8%）。在亚成鱼中，摄入微塑料的鱼的条件因子显著小于（p < 0.05）未摄入微塑料的鱼。Stellifer brasiliensis 不同个体发育阶段对微塑料的摄入反映了研究环境中这种污染物的可用性，并突出了鱼类和其他生物通过食物网的脆弱性。
