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Microplastics in some fish species and their environs in Eastern Visayas, Philippines
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Researchers investigated microplastic ingestion in freshwater and marine fish species in the Philippines, finding that herbivorous rabbitfish ingested more MPs than detritivore mullet, and that MP concentrations in fish guts did not strongly correlate with surrounding water concentrations.
Microplastics are a global concern, and yet, Philippine studies about it are still wanting. This study investigated microplastic ingestion among detritus-feeding mullet versus the herbivorous rabbitfish, and between freshwater and marine fishes. The first part aimed to compare microplastics in fishes' guts differing in feeding guilds, individual sizes, and body weights. The second part compared MPs in fishes' guts and their surrounding waters. Part one revealed that herbivores (58.57%) ingested more MPs than their detritivore-counterparts (30.0%). Pearson correlation, averaging 0.06, suggests a weak correlation between fish weight and MPs amount for both species. Part two showed marine fishes (66.0%) ingested more MPs than its freshwater counterparts (45.0%). A very weak correlation was observed between fish weight and amount of MPs ingested. Fish along the estuary ingested more MPs than those in other stations. No significant differences (p = 0.23) between the MPs in the water samples from each sampling stations was found.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.