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Microplastic in Aquatic Food Webs: M...

Hou, Loren .

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Microplastic in Aquatic Food Webs: Museum Specimens and Ingestion Experiments Reveal Controls on Microplastic Ingestion by Freshwater Fish.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Microplastic in Aquatic Food Webs: Museum Specimens and Ingestion Experiments Reveal Controls on Microplastic Ingestion by Freshwater Fish./
Author:	Hou, Loren .
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
Description:	88 p.
Notes:	Source: Masters Abstracts International, Volume: 82-02.
Contained By:	Masters Abstracts International82-02.
Subject:	Ecology. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27545027
ISBN:	9798662416468

Microplastic in Aquatic Food Webs: Museum Specimens and Ingestion Experiments Reveal Controls on Microplastic Ingestion by Freshwater Fish.
Hou, Loren .

Microplastic in Aquatic Food Webs: Museum Specimens and Ingestion Experiments Reveal Controls on Microplastic Ingestion by Freshwater Fish. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 88 p.

Source: Masters Abstracts International, Volume: 82-02.

Thesis (M.S.)--Loyola University Chicago, 2019.

This item must not be sold to any third party vendors.

Plastic is pervasive in modern economies and ecosystems. Early research suggests freshwater fish commonly ingest microplastic (particles < 5 mm), which may influence fish digestive tissues, but no studies have examined historical patterns in microplastic consumption or rates of microplastic retention in fish. We measured microplastic in digestive tissue of specimens collected and preserved over the last century (Field Museum, Chicago). We selected Micropterus salmoides (largemouth bass), Notropis stramineus (sand shiner), Ictalurus punctatus (channel catfish), and Neogobius melanostomus (round goby) because each was well represented in the museum collection, with specimens from urban rivers. Specimens from 1900-2018 showed increases in microplastic concentration from the 1950's to present. In a second project, we collected round gobies from Lake Michigan in Chicago to conduct feeding experiments to measure microplastic ingestion and retention rates. The majority of microplastic was excreted within 72 hours of ingestion. Results will aid in understanding ecological interactions of microplastic and freshwater fish, informing further work on the movement of microplastic in aquatic food webs.

ISBN: 9798662416468Subjects--Topical Terms:

516476
Ecology.
Subjects--Index Terms:

Microplastic

Microplastic in Aquatic Food Webs: Museum Specimens and Ingestion Experiments Reveal Controls on Microplastic Ingestion by Freshwater Fish.
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520 $a Plastic is pervasive in modern economies and ecosystems. Early research suggests freshwater fish commonly ingest microplastic (particles < 5 mm), which may influence fish digestive tissues, but no studies have examined historical patterns in microplastic consumption or rates of microplastic retention in fish. We measured microplastic in digestive tissue of specimens collected and preserved over the last century (Field Museum, Chicago). We selected Micropterus salmoides (largemouth bass), Notropis stramineus (sand shiner), Ictalurus punctatus (channel catfish), and Neogobius melanostomus (round goby) because each was well represented in the museum collection, with specimens from urban rivers. Specimens from 1900-2018 showed increases in microplastic concentration from the 1950's to present. In a second project, we collected round gobies from Lake Michigan in Chicago to conduct feeding experiments to measure microplastic ingestion and retention rates. The majority of microplastic was excreted within 72 hours of ingestion. Results will aid in understanding ecological interactions of microplastic and freshwater fish, informing further work on the movement of microplastic in aquatic food webs.
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