Detection of microplastic particles in scats from different colonies of California sea lions (Zalophus californianus) in the Gulf of California, Mexico: A preliminary study.

Autor: Ortega-Borchardt JÁ; Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera al Varadero Nacional Km. 6.6. Col. Las Playitas, Guaymas, Sonora, C.P. 85480, Mexico. Electronic address: jangelortegab@gmail.com., Ramírez-Álvarez N; Instituto de Investigaciones Oceanológicas-UABC, Carretera Tijuana-Ensenada 3917, Col. Playitas, Ensenada, B.C., C.P. 22860, Mexico. Electronic address: nancy.ramirez@uabc.edu.mx., Rios Mendoza LM; University of Wisconsin-Superior, Department of Natural Sciences/Chemistry, Superior, WI 54880, USA. Electronic address: lriosmen@uwsuper.edu., Gallo-Reynoso JP; Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera al Varadero Nacional Km. 6.6. Col. Las Playitas, Guaymas, Sonora, C.P. 85480, Mexico. Electronic address: jpgallo@ciad.mx., Barba-Acuña ID; Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera al Varadero Nacional Km. 6.6. Col. Las Playitas, Guaymas, Sonora, C.P. 85480, Mexico. Electronic address: isai.barba@ciad.mx., García-Hernández J; Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera al Varadero Nacional Km. 6.6. Col. Las Playitas, Guaymas, Sonora, C.P. 85480, Mexico. Electronic address: jaqueline@ciad.mx., Égido-Villarreal J; Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera al Varadero Nacional Km. 6.6. Col. Las Playitas, Guaymas, Sonora, C.P. 85480, Mexico. Electronic address: egido@ciad.mx., Kubenik T; University of Wisconsin-Superior, Department of Natural Sciences/Chemistry, Superior, WI 54880, USA.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2023 Jan; Vol. 186, pp. 114433. Date of Electronic Publication: 2022 Dec 08.
DOI: 10.1016/j.marpolbul.2022.114433
Abstrakt: Microplastics (MPs, < 5 mm in size) are highly bioavailable to many taxa within the marine ecosystem, either ingested directly or indirectly through trophic transfer from polluted prey. The ingestion analysis of these MPs from top predators, such as pinnipeds in Mexico, is relatively unexplored. Forty-eight scats from California sea lions were collected on six rookeries along the Gulf of California. From these scat samples, 294 suspected MPs particles were classified and chemically analyzed; 34% were synthetic and semi-synthetic, and 66% were non-synthetic. Blue-colored polyethylene terephthalate fibers were the most common type of MP registered. During laboratory work, multiple contamination control measures were implemented. Although the ingestion pathway is still unknown, our results support the other authors that suggest the potential trophic transfer of MPs to top predators and incidental ingestion while foraging. The particles documented here provide important baseline information for future MP research in the Gulf of California.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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