Futuristic Ocean Acidification Levels Reduce Growth and Reproductive Viability in the Pacific Oyster (Crassostrea gigas)
In this study, we investigated the effects of futuristic pH because of climate change on the growth and reproductive viability of the Pacific oysters. The futuristic pH levels to which adult oysters were exposed are 7.5 and 7.8 (as extreme case) and 8.1 (as moderate case), with pH 8.2 serving as the...
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ftjafricanj:oai:ojs.ajol.info:article/190483 2023-05-15T15:57:44+02:00 Futuristic Ocean Acidification Levels Reduce Growth and Reproductive Viability in the Pacific Oyster (Crassostrea gigas) Omoregie, E. Mwatilifange, N.S.I. Liswaniso, G. 2019-10-21 application/pdf https://www.ajol.info/index.php/jasem/article/view/190483 eng eng Journal of Applied Sciences and Environmental Management https://www.ajol.info/index.php/jasem/article/view/190483/179693 https://www.ajol.info/index.php/jasem/article/view/190483 JASEM has joined the Creative Commons Attribution License (CCAL). Therefore articles in JASEM are open access articles distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY Journal of Applied Sciences and Environmental Management; Vol 23, No 9 (2019); 1747-1754 1119-8362 Ocean acidification climate change growth reproductive viability Crassostrea gigas info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2019 ftjafricanj 2019-10-27T00:08:15Z In this study, we investigated the effects of futuristic pH because of climate change on the growth and reproductive viability of the Pacific oysters. The futuristic pH levels to which adult oysters were exposed are 7.5 and 7.8 (as extreme case) and 8.1 (as moderate case), with pH 8.2 serving as the control. We monitored growth and reproductive viability over a four-week exposure period. The reproductive viability of the oysters exposed to each pH level were assessed based on the sperm motility and egg viability. Throughout the exposure period, the induced acidified nature of each treatment aquaria was maintained. Data obtained from this investigation revealed significant decrease in weight of oysters exposed to pH 7.5 and 7.8 compared to the groups exposed to pH levels 8.1 and 8.2 (p < 0.05). Groups of oysters exposed to pH 7.5 recorded as much as 10.49% decrease in weight, with specific growth rate (SGR) of -0.4 %/day. Reproductive viability was significantly compromised in groups exposed to pH 7.5 and 7.8 as evident with reduced sperm motility and percentage of ruptured eggs in these groups of oysters. We therefore postulate that climate change will have significant impact on the recruitment of oysters in coastal waters as growth and reproduction will be impaired at extreme levels of futuristic ocean acidification.Keywords: Ocean acidification, climate change, growth, reproductive viability, Crassostrea gigas Article in Journal/Newspaper Crassostrea gigas Ocean acidification Pacific oyster AJOL - African Journals Online Pacific |
institution |
Open Polar |
collection |
AJOL - African Journals Online |
op_collection_id |
ftjafricanj |
language |
English |
topic |
Ocean acidification climate change growth reproductive viability Crassostrea gigas |
spellingShingle |
Ocean acidification climate change growth reproductive viability Crassostrea gigas Omoregie, E. Mwatilifange, N.S.I. Liswaniso, G. Futuristic Ocean Acidification Levels Reduce Growth and Reproductive Viability in the Pacific Oyster (Crassostrea gigas) |
topic_facet |
Ocean acidification climate change growth reproductive viability Crassostrea gigas |
description |
In this study, we investigated the effects of futuristic pH because of climate change on the growth and reproductive viability of the Pacific oysters. The futuristic pH levels to which adult oysters were exposed are 7.5 and 7.8 (as extreme case) and 8.1 (as moderate case), with pH 8.2 serving as the control. We monitored growth and reproductive viability over a four-week exposure period. The reproductive viability of the oysters exposed to each pH level were assessed based on the sperm motility and egg viability. Throughout the exposure period, the induced acidified nature of each treatment aquaria was maintained. Data obtained from this investigation revealed significant decrease in weight of oysters exposed to pH 7.5 and 7.8 compared to the groups exposed to pH levels 8.1 and 8.2 (p < 0.05). Groups of oysters exposed to pH 7.5 recorded as much as 10.49% decrease in weight, with specific growth rate (SGR) of -0.4 %/day. Reproductive viability was significantly compromised in groups exposed to pH 7.5 and 7.8 as evident with reduced sperm motility and percentage of ruptured eggs in these groups of oysters. We therefore postulate that climate change will have significant impact on the recruitment of oysters in coastal waters as growth and reproduction will be impaired at extreme levels of futuristic ocean acidification.Keywords: Ocean acidification, climate change, growth, reproductive viability, Crassostrea gigas |
format |
Article in Journal/Newspaper |
author |
Omoregie, E. Mwatilifange, N.S.I. Liswaniso, G. |
author_facet |
Omoregie, E. Mwatilifange, N.S.I. Liswaniso, G. |
author_sort |
Omoregie, E. |
title |
Futuristic Ocean Acidification Levels Reduce Growth and Reproductive Viability in the Pacific Oyster (Crassostrea gigas) |
title_short |
Futuristic Ocean Acidification Levels Reduce Growth and Reproductive Viability in the Pacific Oyster (Crassostrea gigas) |
title_full |
Futuristic Ocean Acidification Levels Reduce Growth and Reproductive Viability in the Pacific Oyster (Crassostrea gigas) |
title_fullStr |
Futuristic Ocean Acidification Levels Reduce Growth and Reproductive Viability in the Pacific Oyster (Crassostrea gigas) |
title_full_unstemmed |
Futuristic Ocean Acidification Levels Reduce Growth and Reproductive Viability in the Pacific Oyster (Crassostrea gigas) |
title_sort |
futuristic ocean acidification levels reduce growth and reproductive viability in the pacific oyster (crassostrea gigas) |
publisher |
Journal of Applied Sciences and Environmental Management |
publishDate |
2019 |
url |
https://www.ajol.info/index.php/jasem/article/view/190483 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Ocean acidification Pacific oyster |
genre_facet |
Crassostrea gigas Ocean acidification Pacific oyster |
op_source |
Journal of Applied Sciences and Environmental Management; Vol 23, No 9 (2019); 1747-1754 1119-8362 |
op_relation |
https://www.ajol.info/index.php/jasem/article/view/190483/179693 https://www.ajol.info/index.php/jasem/article/view/190483 |
op_rights |
JASEM has joined the Creative Commons Attribution License (CCAL). Therefore articles in JASEM are open access articles distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
_version_ |
1766393431977885696 |