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Impact of high-density polyethylene (HDPE) microplastics exposure on Penaeus vannamei survival

Gardado en:
Publicado en:Latin American Journal of Aquatic Research vol. 53, no. 5 (Nov 2025), p. 837-851
Autor Principal: Trejo-Flores, José Vladimir
Outros autores: Peraza-Gómez, Viridiana, Espinoza, Emmanuel Ortiz, Fierro-Coronado, Jesús Arturo, Robles-Ravelero, Maricruz, Moreno-Medrano, Edgar David, Osuna-Laveaga, Daryl Rafael, Luna-González, Antonio
Publicado:
Pontificia Universidad Catolica de Valparaiso
Materias:
Mexico
Physiology
Shellfish
Ingestion
Lethargy
Mortality
Developmental stages
Fluorescence microscopy
Farming systems
Sediments
Bio-assays
Growth rate
Metabolism
Shrimps
Survival
Laboratory animals
Oxidative stress
Shrimp culture
Bioassays
Polyethylene
Particle size
Aquaculture
Shellfish farming
Plastic pollution
Pollutants
Juveniles
Aquatic ecosystems
Toxicity
Polymers
Fluorescence
Microplastics
Marine crustaceans
Biosecurity
Immune response
High density polyethylenes
Crustaceans
Penaeus vannamei
Environmental
Acceso en liña:Citation/Abstract
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Resumo:ABSTRACT. High-density polyethylene microplastics (HDPE-MPs) represent an emerging threat to aquatic ecosystems and aquaculture species, such as Penaeus vannamei. This study examined the impact of PE-MPs on the survival and growth of shrimp postlarvae and juveniles under controlled laboratory conditions. Bioassays were conducted using HDPE-MPs (34-50 um) at concentrations ranging from 5 to 625 mg L-'. Survival, specific growth rate (SGR), and LCs, values were assessed. Ingestion of MPs was confirmed in postlarvae using fluorescence microscopy with Nile red staining. Postlarvae showed 100% mortality at 625 mg L7, with an LCso of 21.89 mg L!, while juveniles reached 70% mortality at 125 mg L·, with an LCs of 30.6 mg L·. Both stages exhibited a significant dose-dependent reduction in survival with MPs (P < 0.05). SGR declined markedly at concentrations of >100 mg L·. Behavioral alterations, lethargy, and reduced feeding were observed, along with the accumulation of MPs in the tissues of dead shrimp, indicating physiological disruption. Postlarvae exhibited greater sensitivity to LCso concentrations, although juveniles may have a relatively higher particle ingestion capacity when considering biomass and size proportions. This study provides the first LCs, values for P. vannamei postlarvae and juveniles exposed solely to HDPE-MPs, highlighting the role of organism size and developmental stage in susceptibility. These results underscore the urgent need to establish toxicity thresholds for MPs in aquaculture species and inform strategies to mitigate their impact. Understanding MP-related risks is essential for enhancing biosecurity and sustainability in shrimp farming system.
ISSN:0718-560X
DOI:10.3856/vol53-issue5-fulltext-3485
Fonte:Science Database