Whether Biomicroplastics Could Be the Vectors for Bioaccumulation of Pollutants in the Marine Environment and the Possible Physiological Impacts on Fish.

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基本資料

Project title

Code/計畫編號

MOST109-2621-M019-001

Translated Name/計畫中文名

海洋環境中生物塑膠微粒是否為汙染物生物累積的媒介及其對魚類可能的生理影響

Project Coordinator/計畫主持人

Yi-Ta Shao

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Institute of Marine Biology

Website

https://www.grb.gov.tw/search/planDetail?id=13542897

Year

2020

Start date/計畫起

01-08-2020

Expected Completion/計畫迄

30-11-2021

Bugetid/研究經費

920千元

ResearchField/研究領域

自然生態保育

為了要克服石化塑膠所造成的環境問題，包括聚羥基烷酸酯(Polyhydroxyalkanaote, PHA)在內的生物可分解塑膠，被廣泛推廣以取代傳統材質。的確，生物塑膠可以比傳統塑膠快速分解，減少在環境中的殘留。然而，如同傳統材質，這些環境中的生物塑膠可能作為媒介，吸收海中的汙染物並轉移至食物鏈中。尤其，由於可分解的特性，生物塑膠可能在較短的時間分解為微小的顆粒，並提供更大的吸收表面積。目前對生物塑膠吸附環境汙染物和生物累積的研究很少，並且對造成海洋生物可能的影響也不了解。在初步實驗中，美麗猛水蚤(Nitocra sp.)會攝食PHA塑膠微粒，這些微粒可以停留在其體內超過24小時。這顯示生物塑膠的微粒可能被浮游生物誤食，因而進入食物網。此外，本團隊亦發現攝入無汙染聚乙烯(PE)微粒的點帶石斑(Epinephelus coioides)稚魚，短時間殘留於體內的塑膠微粒能造成能量代謝失衡以及發炎反應。這說明塑膠微粒本身就可能造成攝食魚類的生理影響。本研究將聚焦於PHA塑膠微粒與傳統PE微粒對環境汙染物，例如菲(phenanthrene)、硝基苯(nitrobenzene)與重金屬銅、鎘與鉛的吸附與攜帶能力。同時，本研究將觀察點帶石斑稚魚攝入吸附汙染物的PHA塑膠微粒後組織內的的汙染物轉移量與相關生理反應，以驗證環境汙染物藉由生物塑膠攜帶進而影響海洋生物的可能性。本研究的成果不但將顯示PHA生物微塑膠在環境中扮演汙染物媒介與生物累積的角色，以及對海洋生物的潛在風險；同時，此項資訊將提供政府針對未來環境保護及永續利用的重要參考資料。 In order to overcome the environmental problems associated with synthetic plastic waste. Biodegradable plastics, such as plastic-like polyhydroxyalkanoate (PHA), are promoted to replace the conventional materials. Indeed, those bioplastics degrade far quicker than synthetic materials, which leave less residual in the environment. However, as the conventional materials, those bioplastics are also potential vector that may adsorb pollutants in seawater and transfer into the food chain. In particular, since they are easier to be broken down into small pieces, they may create larger absorption surfaces then conventional materials. So far, the pollutant adsorption and bioaccumulation-promoting abilities of biodegradable microplastic, and to what extend can affect marine animals are poorly studied. In our preliminary experiment, the copepods (Nitocra sp.) had continuously consumed and egested the PHA-based microbeads over a 24 h in culture experiment. This suggested that the PHA-based microbeads are possible to be taken by zooplankton, and then enter the food chain. Furthermore, another experiment showed that the juvenile orange spotted grouper (Epinephelus coioides) which ingested unpolluted polyethylene (PE) microbeads showed unbalance energy metabolism and significant inflammatory response in the short period as the beads were residue in the body. This research is aimed to understand the pollutants, i.e. phenanthrene, nitrobenzene, copper, cadmium and lead, adsorption and carrying abilities of biodegradablev PHA microbeads and conventional PE microbeads which is a major form of primary microplastics. Meanwhile, the tissue polluants levels and physiological effects on grouper of polluted PHA-based microbeads ingestion will be investigated to understand the potential impacts of microplastic carrying pollutions on fish. The findings of this study will not only reveal the status of PHA-based biomicroplastic as a pollutant vector and bioaccumulation agent, and the possible impacts on marine animals, but also serve as the pioneering and primary source of reference for the micro-degradation of PHA biomicroplastic in an aqueous environment. This study will provide irreplaceable information for future environmental regulation, and will benefit to the sustainable fisheries.

Keyword(s)

生物塑膠
海洋汙染
生物累積
聚羟基脂肪酸酯
Bioplastic
ocean pollution
bioaccumulation
polyhydroxyalkanoate

DSpace CRIS

Whether Biomicroplastics Could Be the Vectors for Bioaccumulation of Pollutants in the Marine Environment and the Possible Physiological Impacts on Fish.

基本資料

Description