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Microplastics in marine sediments and rabbitfish (Siganus fuscescens) from selected coastal areas of Negros Oriental, Philippines
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Researchers conducted the first study of microplastics in an edible finfish in the Philippines, examining rabbitfish (Siganus fuscescens) from coastal areas of Negros Oriental and finding the highest polymer diversity in fish from the densely populated city of Dumaguete. Sediment samples were dominated by rayon microfibers from textiles, while fish guts contained different polymer types reflecting the distinct feeding habitats of this species.
The Philippines is currently ranked as the third top producer of plastic wastes, yet little research has been conducted on marine plastic pollution in this fishery-dependent, developing country. This study is the first in the nation to quantify and characterize microplastics ingested by a commercially important fish, the rabbitfish (Siganus fuscescens), in the coastal areas of Negros Oriental, central Philippines. Across all sites, the diversity of microplastic polymer types was highest in the guts of S. fuscescens from Dumaguete, a densely populated city. Microplastic particles extracted from subtidal sediment samples from Silliman Beach in Dumaguete were dominated by semi-synthetic microfibers (rayon), probably from clothing and textiles. However, these microplastic types were absent in the guts of fish, likely due to the different location and character of their feeding habitats. This study confirms for the first time the presence and diversity of microplastics in an edible finfish in the Philippines.
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Low microplastic abundance in Siganus spp. from the Tañon Strait, Central Philippines
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Microplastics were found at low abundance in rabbitfish (Siganus spp.) from the Tañon Strait in the central Philippines, with fiber types dominating and concentrations lower than reported in fish from more heavily polluted Asian coastal waters.
Microplastic Occurrence in the Gastrointestinal Tract of Rabbitfish (Siganus canaliculatus) in Pujada Bay, Philippines
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Researchers evaluated microplastic ingestion in rabbitfish (Siganus canaliculatus) from Pujada Bay, Philippines, finding MPs in the gastrointestinal tracts of 27.5% of 80 individuals with FTIR spectroscopy confirming the polymer types present. The study documents MP contamination in a commercially important reef fish species, raising concerns about trophic transfer and seafood safety in Philippine coastal waters.
Occurrence and Visual Characteristics of Suspected Microplastics in the Gastrointestinal Tract of Wild Rabbitfish (Siganus guttatus) from Tamisan, Pujada Bay, Philippines
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Scientists found tiny plastic fibers, mostly blue, in the guts of about 1 in 4 wild rabbitfish caught in a Philippine bay — a popular fish for local diets. While this study didn't test whether these fibers make it into the parts of the fish people actually eat, it's a reminder that plastic pollution is working its way into seafood, adding to the case for reducing plastic waste that ends up in our oceans.
Microplastics in the Mottled Rabbitfish (Siganus fuscescens) in Negros Oriental, Philippines with Notes on the Siganid Fishery. The Journal name is Silliman Journal ISSN 0037-5284. Entry of this Journal is not allowed below.
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Researchers found microplastics in 30% of mottled rabbitfish (Siganus fuscescens) samples from Negros Oriental, Philippines, with the highest rates near the most densely populated area. The study also found that fish reproductive parameters have declined compared to 1979 data, suggesting that combined pressures from overfishing and microplastic pollution may be affecting population health in this commercially important species.
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.
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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.