Microplastics in surface water and tissue of white leg shrimp, Litopenaeus vannamei, in a cultured pond in Nakhon Pathom Province, Central Thailand

IF 1.6 Q4 ENVIRONMENTAL SCIENCES AIMS Environmental Science Pub Date : 2023-01-01 DOI:10.3934/environsci.2023027
A. Vitheepradit, T. Prommi
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Abstract

The presence of microplastics in commercially important seafood species is a new issue of food safety concern. Although plastic debris has been found in the gastrointestinal tracts of several species, the prevalence of microplastics in edible shrimp tissues in Thailand has not yet been established. For the first time, the gastrointestinal tract (GT), heptapancreas (HEP), muscle (MU) and exoskeleton (EX) of farmed white leg shrimp (Litopenaeus vannamei) from commercial aquaculture facilities in Nakhon Pathom Province, Thailand, were analyzed for microplastics (MPs). The number of MP items per tissue was 27.36±2.28 in the GT, 17.42±0.90 in the HEP, 11.37±0.60 in the MU and 10.04±0.52 in the EX. MP concentrations were 137.78±16.48, 16.31±1.87, 1.69±0.13 and 4.37±0.27 items/gram (ww) in the GT, HEP, MU and EX, respectively. Microplastics ranged in size from < 100 to 200–250 μm, with fragment-shape (62.07%), fibers (37.31%) and blue (43.69%) was the most common. The most frequently found polymers in shrimp tissue organs and pond water were polyethylene terephthalate (PET), polyvinyl acetate (PVAc) and cellulose acetate butyrate (CAB). Shrimp consumption (excluding GT and EX) was calculated as 28.79 items/shrimp/person/day using Thailand's consumption of shrimp, MP abundance and shrimp consumption. The results of the study can be used as background data for future biomonitoring of microplastics in shrimp species that are significant from an ecological and commercial perspective. MP abundance in farmed L. vannamei may be related to feeding habits and the source of MPs could come from the aquaculture facilities operations.
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泰国中部那空府一个养殖池塘中,凡纳滨对虾(Litopenaeus vannamei)表层水和组织中的微塑料
微塑料在重要商业海鲜物种中的存在是一个新的食品安全问题。虽然在一些物种的胃肠道中发现了塑料碎片,但泰国食用虾组织中微塑料的普遍程度尚未确定。首次对泰国那孔府商业养殖设施养殖的凡纳滨白腿虾(Litopenaeus vannamei)的胃肠道(GT)、肝胰腺(HEP)、肌肉(MU)和外骨骼(EX)进行了微塑料(MPs)分析。每个组织的MP项目数,GT组为27.36±2.28个,HEP组为17.42±0.90个,MU组为11.37±0.60个,EX组为10.04±0.52个。MP浓度在GT、HEP、MU和EX组分别为137.78±16.48、16.31±1.87、1.69±0.13和4.37±0.27个/g (ww)。微塑料的粒径范围在< 100 ~ 200 ~ 250 μm之间,以块状(62.07%)、纤维状(37.31%)和蓝色(43.69%)最为常见。对虾组织器官和池塘水中最常见的聚合物是聚对苯二甲酸乙二醇酯(PET)、聚醋酸乙烯酯(PVAc)和醋酸丁酸纤维素(CAB)。虾的消费量(不包括GT和EX)根据泰国虾的消费量、MP丰度和虾的消费量计算为28.79只/虾/人/天。研究结果可作为未来对虾类微塑料生物监测的背景数据,具有重要的生态和商业意义。养殖的凡纳滨沼虾的MP丰度可能与摄食习性有关,MP的来源可能来自水产养殖设施的操作。
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来源期刊
AIMS Environmental Science
AIMS Environmental Science ENVIRONMENTAL SCIENCES-
CiteScore
2.90
自引率
0.00%
发文量
31
审稿时长
5 weeks
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