Ingestion of microplastics by the estuarine polychaete, Namalycastis sp. in the Setiu Wetlands, Malaysia

Hamzah, Sofiah; Altrawneh, Ra'ad Shaher; Anuar, Sabiqah Tuan; Khalik, Wan Mohd Afiq Wan Mohd; Kolandhasamy, Prabhu; Ibrahim, Yusof Shuaib

doi:10.1016/j.marpolbul.2021.112617

Cited by 39 publications

(26 citation statements)

References 39 publications

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“…Additionally, the other reason for S3 becoming the most polluted area (in terms of ingested microplastics by polychaetes) could be due to its geographical area that is sheltered by the small island and near the closed inlet; thus, the ocean movement might be relatively slow in that area and subsequently cause an accumulation of microplastics waste. Therefore, the population of polychaetes in this area consumed more microplastics compared to other areas, which corroborated the findings reported by [ 11 ]. On the other hand, previous studies have suggested that the different amounts of microplastics collected at the sampling stations might be affected by the movement of the ocean or winds [ 30 , 38 ].…”

Section: Resultssupporting

confidence: 91%

“…The sampling was performed four times from November 2015 until January 2017 in Setiu Wetlands, Terengganu, Malaysia, following the protocol of Hamzah et al [ 11 ]. The field visits were conducted at four sites (i.e., three in Ular River and marked as S1–S3, and one in Setiu River and marked as S4, Figure 1 ).…”

Section: Methodsmentioning

confidence: 99%

“…Glassware and instrumentation were washed with filtered Milli-Q water (Milli-Q water underwent double filtration with 1.2 µm Whatman GF/C filter paper prior usage) and rinsed three times with 80% ethanol. In addition, procedural blanks and control filter papers were first inspected by dissecting microscope (Olympus SZX-ZB7, Olympus Corp., Tokyo, Japan) and later thoroughly analyzed to detect any contamination of microplastics from the laboratory surroundings and during sample handling [ 11 ].…”

Section: Methodsmentioning

confidence: 99%

“…Recent attention has been focused on lower trophic level organisms, as these marine invertebrates have significant effects on the introduction of microplastics into the food chain [ 10 ]. Recent studies revealed that an excessive amount of microplastics has been found in the tissue and gastrointestinal tract of small marine deposit feeders and scavengers [ 11 , 12 , 13 ] and respiratory and digestive tracts of crustaceans [ 14 , 15 ]. These microplastics were also detected in the body of larger predators after consuming lower trophic animals [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Utilizing Pyrolysis–Gas Chromatography/Mass Spectrometry for Monitoring and Analytical Characterization of Microplastics in Polychaete Worms

et al. 2022

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Microplastics (the term for plastics at sizes of <5 mm) might be introduced into the environment from domestic or agricultural activities or from the breakdown of plastic pieces, particles, and debris that are bigger in size. Their presence in the aquatic environment has caused accumulation problems, as microplastics do not easily break down and can be digested by some aquatic organisms. This study was conducted to screen and monitor the level of microplastic pollution in polychaete worms using pyrolysis–gas chromatography/mass spectrometry (Py-GC/MS). The study was conducted in Setiu Wetlands, Malaysia from November 2015 to January 2017 at five-month intervals and covered all monsoon changes. Results from physical and visual analyses indicated that a total number of 371.4 ± 20.2 items/g microplastics were retrieved from polychaete for all seasons, in which, the majority comprised transparent microplastics (49.87%), followed by brown with 138.3 ± 13.6 items/g (37.24%), 21.7 ± 1.9 items/g for blue (5.84%), and 12.9 ± 1.1 items/g for black (3.47%), while the remaining were green and grey-red colors. Statistical analysis using Kruskal–Wallis showed insignificant differences (p > 0.05) between the sampling station and period for the presence of a microplastics amount. Most of the microplastics were found in fiber form (81.5%), whereas the remaining comprised fragment (18.31%) and film (0.19%) forms. Further analysis with Py-GC/MS under a selective ion monitoring mode indicated that pyrolytic products and fragment ions for a variety of polymers, such as polyvinyl chloride, polypropylene, polyethylene, polyethylene terephthalate, polyamide, and polymethylmethacrylate, were detected. This study provides an insightful application of Py-GC/MS techniques for microplastics monitoring, especially when dealing with analytical amounts of samples.

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Section: Resultssupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Utilizing Pyrolysis–Gas Chromatography/Mass Spectrometry for Monitoring and Analytical Characterization of Microplastics in Polychaete Worms

et al. 2022

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“…Marine birds being reported to ingest MP at coastal waters because of their opportunistic feeding nature will also be threatened as migratory birds stopping over in Malaysia [82]. In recent years, MP research in the country is thriving and work has been done on several compartments in mangrove estuaries such as organisms [83][84][85][86][87], sediments [88][89][90] and waters [90,91].…”

Section: Mangrove Forestsmentioning

confidence: 99%

A review of plastic and microplastic pollution towards the Malaysian marine environment

Tan

Jaafar

Tan

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Plastics are widely used in daily lives but uncontrollably dumped into the ocean by humans. Plastic pollution is harmful to the marine environment and organisms as it can break down into microplastics (MPs) and release chemicals into the water. Microplastics (MPs) are small, fragmented plastic pieces (< 5mm) that exist in every part of the ocean. MPs are problematic because they are hard to recover and can be easily consumed by marine organisms, resulting in bioaccumulation and biomagnification in the food chain. Malaysia is a tropical country located at the heart of Southeast Asia (SEA) and owns diverse marine ecosystems and organisms. Malaysia is affected by plastic pollution due to rapid development and intense economic activities. In this paper, we discuss the plastic pollution crisis in Malaysia and its contributing factor. We review the possible effect on the marine environment in Malaysia. Knowledge gaps to manage plastic pollution in Malaysia are also addressed. As MPs are consistently discovered in different compartments of the Malaysian marine environment, there is an urgency to develop a better waste management system and strong cooperation from all societal levels to handle plastic pollution in the country.

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First Evidence of Microplastic Ingestion by Riverine Fish From the Freshwater of Northwest Peninsular Malaysia

Yamen,

Samsudin,

Azid

et al. 2024

Enviro Toxic and Chemistry

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In a baseline study, we investigated microplastic contamination in fish from the Pinang and Kerian Rivers in Northwest Peninsular Malaysia. In recognition of the growing concern over microplastic pollution in aquatic environments, we aimed to assess the abundance and characteristics of microplastics ingested by various fish species. Fish samples were collected from local fishermen, followed by a digestion process using 10% potassium hydroxide (KOH). Microplastics were isolated and analyzed through visual examination and attenuated total reflectance Fourier transform infrared spectroscopy. The results revealed a high prevalence of microplastics, with Johnius borneensis and Oreochromis sp. exhibiting the highest abundance, averaging 48.6 and 42.8 microplastics/g, respectively. The predominant shapes were fibers (55.6%) and fragments (25.9%), with colors primarily transparent (48.19%) and black (30.12%). Our results indicate significant contamination levels in freshwater fish, emphasizing the need for further research and effective mitigation strategies. These findings provide crucial baseline data on microplastics in Malaysian freshwater ecosystems. Environ Toxicol Chem 2024;00:1–10. © 2024 SETAC

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Ingestion of microplastics by the estuarine polychaete, Namalycastis sp. in the Setiu Wetlands, Malaysia

Cited by 39 publications

References 39 publications

Utilizing Pyrolysis–Gas Chromatography/Mass Spectrometry for Monitoring and Analytical Characterization of Microplastics in Polychaete Worms

Utilizing Pyrolysis–Gas Chromatography/Mass Spectrometry for Monitoring and Analytical Characterization of Microplastics in Polychaete Worms

A review of plastic and microplastic pollution towards the Malaysian marine environment

First Evidence of Microplastic Ingestion by Riverine Fish From the Freshwater of Northwest Peninsular Malaysia

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