Assessment the effect of exposure to microplastics in Nile Tilapia (Oreochromis niloticus) early juvenile: I. blood biomarkers

Functional response quantifies microplastic uptake by a widespread African fish species

“…Under higher concentrations than tested in the present study, microplastic particles have been shown to accrue across all tissues of freshwater tilapia following consumption (Ding et al, 2018). In turn, adverse impacts on juvenile fish stages have been reported following exposure to concentrations aligned with the lowest levels in this study, such as anemia (e.g., Hamed et al, 2019). Further, uptake of microplastic has been shown to interact with, and potentially alter, toxicity levels of other pollutants upon tilapia (Zhang et al, 2019).…”

Knowledge about Microplastic in Mediterranean Tributary River Ecosystems: Lack of Data and Research Needs on Such a Crucial Marine Pollution Source

“…Data on organisms are even rarer than those on water and sediments; mainly these are related to exposure experiments [3,[53][54][55] or, more recently, aimed to assess the risk in the case of organisms intended for human consumption [2]. Few studies consider the ecological effects of MPs in whole ecosystems, in their spatial complex, in the biotic and abiotic compartments and in what happens at the level of entire food chains [56][57][58].…”

“…Recently, Hamed et al 2019 [55] exposed early juvenile Nile Tilapia (Oreochromis niloticus) to MPs, evidencing an accumulation in the whole body and effects like anaemia and perturbations in the biochemical parameters. This is the only example of an exposure experiment involving riverine fish, ecotoxicological experiments being mainly concerned with MP ingestion and the effects in various marine species (for example [3,53,54]).…”

Surveillance of Seafood for Microplastics

“…Exposure studies show that aquatic organisms are impacted by microlitter, and are published to cause, in declining publishing frequency: (1) Reduced body growth or energy, (2) reduced population growth, (3) reduced activity, (4) physiological stress, hormonal dysregulation, (5) cell death, general toxicity, (6) aberrant development, (7) altered lipid metabolism, (8) increased body growth or food consumption, (9) neuropathology, (10) liver or kidney damage, and (11) intestinal damage (Kogel et al 2019). We analyzed the published literature on this topic since 2019 (not included in Kogel et al 2019), and the results still fall under similar patterns: fishes displayed loss of energy and decreased motion (Yin et al 2019), oxidative stress (Espinosa et al 2019), neurotoxicity (Miranda et al 2019), and effects on diverse metabolic and hematological parameters (Hamed et al 2019). Bivalves displayed upregulation of oxidative stress involved enzymes (Revel et al 2019), abnormal development (Rist et al 2019), and upregulation of detoxification with reduction of byssal threads (Green et al 2019).…”