Current Search: Ocean temperature (x)
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Title
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How will the predicted ocean temperatures of 2100, impact larval development of Lobatus (Strombus) gigas in the Caribbean region?.
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Name/Creator
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Pollard, Madison Jane
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Abstract/Description
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In the Caribbean region, calcareous shelled organisms are at risk of inhibited larval development (e.g., shell growth and mortality) at high ocean temperatures. Given predicted sea-surface temperatures due to global climate change for the year 2100 (by the IPCC and NOAA) researchers are predicting at what temperatures these changes could affect larval development of Queen conch, Lobatus (Strombus) gigas. Carbon emissions from human activities (e.g., burning of fossil fuels) are affecting...
Show moreIn the Caribbean region, calcareous shelled organisms are at risk of inhibited larval development (e.g., shell growth and mortality) at high ocean temperatures. Given predicted sea-surface temperatures due to global climate change for the year 2100 (by the IPCC and NOAA) researchers are predicting at what temperatures these changes could affect larval development of Queen conch, Lobatus (Strombus) gigas. Carbon emissions from human activities (e.g., burning of fossil fuels) are affecting marine organisms at multiple trophic levels due to ocean warming and acidification. L. gigas was abundant in their geographic range of the Caribbean Sea, the Gulf of Mexico, and around Bermuda, now with a combination of overharvesting and global climate change, conchs are candidates for the Endangered Species Act. As CO2 increases in the ocean, carbonate for calcium carbonate production decreases. L. gigas will use more energy to produce their shells (stunting growth rates) or opt for weaker shells. Researchers (Aranda and Manzano) reared L.gigas eggs from hatchling to settlement under five temperatures (28, 28.5, 29, 29.5, 30℃) to assess growth and development. At 30 ℃ larvae experienced faster growth rates, but survival was low (23%). While at 28 ℃ larvae had the highest survival (35%). Temperature seemed to have more of a direct impact on earlier stages of larvae of L. gigas than those closest to settlement. Queen conchs are economically important for their commercial value, being the second largest fishery in the Caribbean. Ocean warming and acidification would cause a decrease in harvest, changing prices for consumers. Urgent action against reducing greenhouse gas emissions must be taken. The Caribbean can mitigate contribution to greenhouse gases by renewable energy since it is an area that has great potential for hydro-electric, geothermal, wind and solar energy. This in turn could reduce the impacts to L. gigas larval development.
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Date Issued
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2021-04-21
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Identifier
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BC3356
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/broward/fd/BC3356
