| Title |
Microplastic in Sediments and Ingestion Rates in Three Edible Bivalve Mollusc Species in a Southern Philippine Estuary |
|
Authors |
Bonifacio, Princess; Metillo, Ephrime ; Romano, Edwin |
|
Publication date |
2022/11 |
|
Journal |
Water, Air, Soil Pollution Journal |
| Volume |
233 |
| Issue |
2 |
| Pages |
455 |
| Publisher |
Springer |
| Abstract |
Plastics are now a major environmental concern worldwide with their widespread contamination and accumulation.
Microplastic particle (<5mm) is an emerging pollution issue as it is being detected worldwide in aquatic and
terrestrial ecosystems, but relatively little is known in tropical regions. This study determined the (1) abundance of
microplastics in sediment and (2) in situ and laboratory ingestion rates of microplastics in three scarcely studied
tropical bivalve mollusc species (Donax sp., Meretrix meretrix, and Katelysia hiantina) in Panguil Bay, Southern
Philippines. A total of 2,258 microplastic particles (62.72 脗卤 18.31 items/m2) were found on the sediment samples.
Filament/fiber is the most abundant type of microplastic in terms of morphology, while black and blue are the
dominant colors of microplastic particles. There were 1,495 microplastic particles (4.15 脗卤 3.37 particles/clam)
present in the clam tissues, of which polypropylene (PP) and rayon (RY) polymers are the most common, whereas
K. hiantina (707 particles) showed the highest amount of microplastics. The number of ATR-FTIR-confirmed
polymer types in the wild clams is greater than those in the sediments. The study reveals abundant microplastics in
sediments and in the three species of bivalve individuals from the wild. All clams ingested low-density polyethylene
(LDPE) microplastic particles in the laboratory. The mean number of LDPE microplastic particles ingested by clams
is 4.62 脗卤 2.40 particles/clam/7days, with the highest value observed in K. hiantina. Additionally, Donax sp., M.
meretrix, and K. hiantina could ingest high densities of 40-60 脦录m microplastic particles. |
| Index terms / Keywords |
bivalves, ATR-FTIR analysis, microplastics, Panguil Bay, sediments, ingestion rate |
| DOI |
|
| URL |
|
Mindanao State
University - Iligan Institute of Technology