Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream ( Acanthopagrus schlegelii ), Physiological and Histological Studies
Acidification (OA), a global threat to the world’s oceans, is projected to significantly grow if CO 2 continues to be emitted into the atmosphere at high levels. This will result in a slight decrease in pH. Since the latter is a logarithmic scale of acidity, the higher acidic seawater is expected to...
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MDPI AG
2021
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Online Access: | https://doi.org/10.3390/ani11113119 https://doaj.org/article/a768243f75c841008d5c09b1e32caac8 |
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ftdoajarticles:oai:doaj.org/article:a768243f75c841008d5c09b1e32caac8 2024-01-07T09:45:43+01:00 Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream ( Acanthopagrus schlegelii ), Physiological and Histological Studies Fabrice Arnaud Tegomo Zhiwen Zhong Achille Pandong Njomoue Samuel Ukpong Okon Sami Ullah Neveen Anandi Gray Kai Chen Yuxiao Sun Jinxing Xiao Lei Wang Ying Ye Hui Huang Qingjun Shao 2021-10-01T00:00:00Z https://doi.org/10.3390/ani11113119 https://doaj.org/article/a768243f75c841008d5c09b1e32caac8 EN eng MDPI AG https://www.mdpi.com/2076-2615/11/11/3119 https://doaj.org/toc/2076-2615 doi:10.3390/ani11113119 2076-2615 https://doaj.org/article/a768243f75c841008d5c09b1e32caac8 Animals, Vol 11, Iss 11, p 3119 (2021) climate change growth performance histology metabolic acidosis microvilli atrophy ocean acidification Veterinary medicine SF600-1100 Zoology QL1-991 article 2021 ftdoajarticles https://doi.org/10.3390/ani11113119 2023-12-10T01:45:23Z Acidification (OA), a global threat to the world’s oceans, is projected to significantly grow if CO 2 continues to be emitted into the atmosphere at high levels. This will result in a slight decrease in pH. Since the latter is a logarithmic scale of acidity, the higher acidic seawater is expected to have a tremendous impact on marine living resources in the long-term. An 8-week laboratory experiment was designed to assess the impact of the projected pH in 2100 and beyond on fish survival, health, growth, and fish meat quality. Two projected scenarios were simulated with the control treatment, in triplicates. The control treatment had a pH of 8.10, corresponding to a pCO 2 of 321.37 ± 11.48 µatm. The two projected scenarios, named Predict_A and Predict_B, had pH values of 7.80-pCO 2 = 749.12 ± 27.03 and 7.40-pCO 2 = 321.37 ± 11.48 µatm, respectively. The experiment was preceded by 2 weeks of acclimation. After the acclimation, 20 juvenile black sea breams ( Acanthopagrus schlegelii ) of 2.72 ± 0.01 g were used per tank. This species has been selected mainly due to its very high resistance to diseases and environmental changes, assuming that a weaker fish resistance will also be susceptibly affected. In all tanks, the fish were fed with the same commercial diet. The seawater’s physicochemical parameters were measured daily. Fish samples were subjected to physiological, histological, and biochemical analyses. Fish growth, feeding efficiency, protein efficiency ratio, and crude protein content were significantly decreased with a lower pH. Scanning electron microscopy revealed multiple atrophies of microvilli throughout the small intestine’s brush border in samples from Predict_A and Predict_B. This significantly reduced nutrient absorption, resulting in significantly lower feed efficiency, lower fish growth, and lower meat quality. As a result of an elevated pCO 2 in seawater, the fish eat more than normal but grow less than normal. Liver observation showed blood congestion, hemorrhage, necrosis, vacuolation of ... Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Animals 11 11 3119 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
climate change growth performance histology metabolic acidosis microvilli atrophy ocean acidification Veterinary medicine SF600-1100 Zoology QL1-991 |
spellingShingle |
climate change growth performance histology metabolic acidosis microvilli atrophy ocean acidification Veterinary medicine SF600-1100 Zoology QL1-991 Fabrice Arnaud Tegomo Zhiwen Zhong Achille Pandong Njomoue Samuel Ukpong Okon Sami Ullah Neveen Anandi Gray Kai Chen Yuxiao Sun Jinxing Xiao Lei Wang Ying Ye Hui Huang Qingjun Shao Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream ( Acanthopagrus schlegelii ), Physiological and Histological Studies |
topic_facet |
climate change growth performance histology metabolic acidosis microvilli atrophy ocean acidification Veterinary medicine SF600-1100 Zoology QL1-991 |
description |
Acidification (OA), a global threat to the world’s oceans, is projected to significantly grow if CO 2 continues to be emitted into the atmosphere at high levels. This will result in a slight decrease in pH. Since the latter is a logarithmic scale of acidity, the higher acidic seawater is expected to have a tremendous impact on marine living resources in the long-term. An 8-week laboratory experiment was designed to assess the impact of the projected pH in 2100 and beyond on fish survival, health, growth, and fish meat quality. Two projected scenarios were simulated with the control treatment, in triplicates. The control treatment had a pH of 8.10, corresponding to a pCO 2 of 321.37 ± 11.48 µatm. The two projected scenarios, named Predict_A and Predict_B, had pH values of 7.80-pCO 2 = 749.12 ± 27.03 and 7.40-pCO 2 = 321.37 ± 11.48 µatm, respectively. The experiment was preceded by 2 weeks of acclimation. After the acclimation, 20 juvenile black sea breams ( Acanthopagrus schlegelii ) of 2.72 ± 0.01 g were used per tank. This species has been selected mainly due to its very high resistance to diseases and environmental changes, assuming that a weaker fish resistance will also be susceptibly affected. In all tanks, the fish were fed with the same commercial diet. The seawater’s physicochemical parameters were measured daily. Fish samples were subjected to physiological, histological, and biochemical analyses. Fish growth, feeding efficiency, protein efficiency ratio, and crude protein content were significantly decreased with a lower pH. Scanning electron microscopy revealed multiple atrophies of microvilli throughout the small intestine’s brush border in samples from Predict_A and Predict_B. This significantly reduced nutrient absorption, resulting in significantly lower feed efficiency, lower fish growth, and lower meat quality. As a result of an elevated pCO 2 in seawater, the fish eat more than normal but grow less than normal. Liver observation showed blood congestion, hemorrhage, necrosis, vacuolation of ... |
format |
Article in Journal/Newspaper |
author |
Fabrice Arnaud Tegomo Zhiwen Zhong Achille Pandong Njomoue Samuel Ukpong Okon Sami Ullah Neveen Anandi Gray Kai Chen Yuxiao Sun Jinxing Xiao Lei Wang Ying Ye Hui Huang Qingjun Shao |
author_facet |
Fabrice Arnaud Tegomo Zhiwen Zhong Achille Pandong Njomoue Samuel Ukpong Okon Sami Ullah Neveen Anandi Gray Kai Chen Yuxiao Sun Jinxing Xiao Lei Wang Ying Ye Hui Huang Qingjun Shao |
author_sort |
Fabrice Arnaud Tegomo |
title |
Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream ( Acanthopagrus schlegelii ), Physiological and Histological Studies |
title_short |
Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream ( Acanthopagrus schlegelii ), Physiological and Histological Studies |
title_full |
Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream ( Acanthopagrus schlegelii ), Physiological and Histological Studies |
title_fullStr |
Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream ( Acanthopagrus schlegelii ), Physiological and Histological Studies |
title_full_unstemmed |
Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream ( Acanthopagrus schlegelii ), Physiological and Histological Studies |
title_sort |
experimental studies on the impact of the projected ocean acidification on fish survival, health, growth, and meat quality; black sea bream ( acanthopagrus schlegelii ), physiological and histological studies |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/ani11113119 https://doaj.org/article/a768243f75c841008d5c09b1e32caac8 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Animals, Vol 11, Iss 11, p 3119 (2021) |
op_relation |
https://www.mdpi.com/2076-2615/11/11/3119 https://doaj.org/toc/2076-2615 doi:10.3390/ani11113119 2076-2615 https://doaj.org/article/a768243f75c841008d5c09b1e32caac8 |
op_doi |
https://doi.org/10.3390/ani11113119 |
container_title |
Animals |
container_volume |
11 |
container_issue |
11 |
container_start_page |
3119 |
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1787427310690893824 |