Bibliographic citations
Sánchez, G., (2022). Efecto de la exposición de microplásticos de polietileno de alta densidad en alevines de trucha arco iris (Oncorhynchus mykiss) [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/5961
Sánchez, G., Efecto de la exposición de microplásticos de polietileno de alta densidad en alevines de trucha arco iris (Oncorhynchus mykiss) []. PE: Universidad Nacional Agraria La Molina; 2022. https://hdl.handle.net/20.500.12996/5961
@misc{renati/1115384,
title = "Efecto de la exposición de microplásticos de polietileno de alta densidad en alevines de trucha arco iris (Oncorhynchus mykiss)",
author = "Sánchez Matías, Gabriela Angélica",
publisher = "Universidad Nacional Agraria La Molina",
year = "2022"
}
The present study evaluated the effect of high-density polyethylene (HDPE) microplastics fragments in rainbow trout Oncorhynchus mykiss fingerlings. This presence in the aquatic environment could cause negative effects in the fishes. Through a short exposition assay of 15 and 30 days, with their respective samplings. The evaluation of the retention of microplastics in the gastrointestinal tract and in the gills, as well as histology analysis of different organs in the fingerlings of rainbow trout exposed to different concentrations of microplastics particles (50, 600, and 1200 part. /L) were carried out. Thus, within the results of the gastrointestinal tract there were found significant differences (p<0.05) between the treatments regarding the number of particles retained; also, it was seen a higher tendency of accumulation of microplastics in the fingerlings of rainbow trout when there were exposed to a higher treatment concentration. The presence percentage of particles of HDPE found at 15 and 30 days in the gastrointestinal tract ranged from 62% to 100%, and in the gills was from 3% to 26% relative to the treatment concentration, while in the control group there was no presence of this microplastic. In the gill there were seen progressive changes at a histologic level, this could be due to the exposition of microplastics, these changes did not affect the normal development of the fish as it was observed regarding the biometric index that were not different from the control group. The present research shows that the microplastics are accumulated into the rainbow trout fingerlings. Although its effects did not challenge the survival nor the development of them, the retention of the particles of microplastics in the gastrointestinal tract and the gills could produce negative changes in the long term if the accumulation prevalence does not stop.
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