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Impacts of ocean acidification and m...

Duckham, Carolyn.

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Impacts of ocean acidification and mitigative hydrated lime addition on Pacific oyster larvae: implications for shellfish aquaculture.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Impacts of ocean acidification and mitigative hydrated lime addition on Pacific oyster larvae: implications for shellfish aquaculture./
作者:	Duckham, Carolyn.
面頁冊數:	64 p.
附註:	Source: Masters Abstracts International, Volume: 52-05.
Contained By:	Masters Abstracts International52-05(E).
標題:	Agriculture, Fisheries and Aquaculture. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MS23979
ISBN:	9780499239792

Impacts of ocean acidification and mitigative hydrated lime addition on Pacific oyster larvae: implications for shellfish aquaculture.
Duckham, Carolyn.

Impacts of ocean acidification and mitigative hydrated lime addition on Pacific oyster larvae: implications for shellfish aquaculture. - 64 p.

Source: Masters Abstracts International, Volume: 52-05.

Thesis (M.R.M.)--Simon Fraser University (Canada), 2013.

Anthropogenic CO2 emissions are rapidly altering marine chemistry, significantly impacting calcifying organisms' ability to produce and maintain shells. In the Pacific Northwest, shellfish hatcheries have already observed mass die offs of larvae, potentially from ocean acidification. This study aims to elucidate if hydrated lime can be used at the hatchery level to chemically reverse ocean acidification and its negative impacts on larval stages of the Pacific oyster, Crassostrea gigas. For 24 days, larvae were exposed to four treatments: ambient - 390 ppm, ocean acidified - 1500 ppm, limedambient and limed-ocean acidified treatments to meet pre-industrial levels ~ 280 ppm. Hydrated lime significantly increased larval shell length after two weeks of development, but did not affect survival or percent abnormality between treatments. Investigations into mitigative lime use appear cost effective and feasible for shellfish hatcheries under future CO2 scenarios, but requires more extensive research at the hatchery level, and for other species.

ISBN: 9780499239792Subjects--Topical Terms:

1020913
Agriculture, Fisheries and Aquaculture.

Impacts of ocean acidification and mitigative hydrated lime addition on Pacific oyster larvae: implications for shellfish aquaculture.
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520 $a Anthropogenic CO2 emissions are rapidly altering marine chemistry, significantly impacting calcifying organisms' ability to produce and maintain shells. In the Pacific Northwest, shellfish hatcheries have already observed mass die offs of larvae, potentially from ocean acidification. This study aims to elucidate if hydrated lime can be used at the hatchery level to chemically reverse ocean acidification and its negative impacts on larval stages of the Pacific oyster, Crassostrea gigas. For 24 days, larvae were exposed to four treatments: ambient - 390 ppm, ocean acidified - 1500 ppm, limedambient and limed-ocean acidified treatments to meet pre-industrial levels ~ 280 ppm. Hydrated lime significantly increased larval shell length after two weeks of development, but did not affect survival or percent abnormality between treatments. Investigations into mitigative lime use appear cost effective and feasible for shellfish hatcheries under future CO2 scenarios, but requires more extensive research at the hatchery level, and for other species.
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