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Thangal SH, Muralisankar T, Mohan K, Santhanam P, Venmathi Maran BA. Biological and physiological responses of marine crabs to ocean acidification: A review. ENVIRONMENTAL RESEARCH 2024; 248:118238. [PMID: 38262516 DOI: 10.1016/j.envres.2024.118238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/02/2024] [Accepted: 01/17/2024] [Indexed: 01/25/2024]
Abstract
Marine crabs play an integral role in the food chain and scavenge the debris in the ecosystem. Gradual increases in global atmospheric carbon dioxide cause ocean acidification (OA) and global warming that leads to severe consequences for marine organisms including crabs. Also, OA combined with other stressors like temperature, hypoxia, and heavy metals causes more severe adverse effects in marine crabs. The present review was made holistic discussion of information from 111 articles, of which 37 peer-reviewed original research papers reported on the effect of OA experiments and its combination with other stressors like heavy metals, temperature, and hypoxia on growth, survival, molting, chitin quality, food indices, tissue biochemical constituents, hemocytes population, and biomarker enzymes of marine crabs. Nevertheless, the available reports are still in the infancy of marine crabs, hence, this review depicts the possible gaps and future research needs on the impact of OA on marine crabs.
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Affiliation(s)
- Said Hamid Thangal
- Aquatic Ecology Laboratory, Department of Zoology, Bharathiar University, Coimbatore-641046, Tamil Nadu, India
| | | | - Kannan Mohan
- PG and Research Department of Zoology, Sri Vasavi College, Erode, Tamil Nadu 638 316, India
| | - Perumal Santhanam
- Marine Planktonology& Aquaculture Laboratory, Department of Marine Science, Bharathidasan University, Tiruchirappalli- 620024, Tamil Nadu, India
| | - Balu Alagar Venmathi Maran
- Institute of Integrated Science and Technology, Nagasaki University, 1-14 Bunkyomachi, Nagasaki, 852-8521, Japan
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Li X, Jia T, Zhu H, Cai L, Lu Y, Wang J, Tao H, Li P. Bioelectricity facilitates carbon dioxide fixation by Alcaligenes faecalis ZS-1 in a biocathodic microbial fuel cell (MFC). BIORESOURCE TECHNOLOGY 2024; 399:130555. [PMID: 38460556 DOI: 10.1016/j.biortech.2024.130555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 03/01/2024] [Accepted: 03/06/2024] [Indexed: 03/11/2024]
Abstract
The CO2 fixation mechanism by Alcaligenes faecalis ZS-1 in a biocathode microbial fuel cell (MFC) was investigated. The closed-circuit MFC (CM) exhibited a significantly higher CO2 fixation rate (10.7%) compared to the open-circuit MFC (OC) (2.0%), indicating that bioelectricity enhances CO2 capture efficiency. During the inward extracellular electron transfer (EET) process, riboflavin concentration increased in the supernatant while cytochrome levels decreased. Genome sequencing revealed diverse metabolic pathways for CO2 fixation in strain ZS-1, with potential dominance of rTCA and C4 pathways under electrotrophic conditions as evidenced by significant upregulation of the ppc gene. Differential metabolite analysis using LC-MS demonstrated that CM promoted upregulation of various lipid metabolites. These findings collectively highlight that ZS-1 simultaneously generated electricity and fixed CO2 and that the ppc associated with bioelectricity played a critical role in CO2 capture. In conclusion, bioelectricity resulted in a significant enhancement in the efficiency of CO2 fixation and lipid production.
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Affiliation(s)
- Xinyi Li
- School of Ocean Science and Technology, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Tianbo Jia
- School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Haiguang Zhu
- School of Ocean Science and Technology, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Luhan Cai
- School of Ocean Science and Technology, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Yubiao Lu
- School of Ocean Science and Technology, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Jianxin Wang
- School of Ocean Science and Technology, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Hengcong Tao
- School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Peng Li
- School of Ocean Science and Technology, Zhejiang Ocean University, Zhoushan 316022, PR China.
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Thangal SH, Nandhini Priya R, Vasuki C, Gayathri V, Anandhan K, Yogeshwaran A, Muralisankar T, Ramesh M, Rajaram R, Santhanam P, Venmathi Maran BA. The impact of ocean acidification and cadmium toxicity in the marine crab Scylla serrata: Biological indices and oxidative stress responses. CHEMOSPHERE 2023; 345:140447. [PMID: 37858766 DOI: 10.1016/j.chemosphere.2023.140447] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/29/2023] [Accepted: 10/12/2023] [Indexed: 10/21/2023]
Abstract
Ocean acidification (OA) and heavy metal pollution in marine environments are potentially threatening marine life. The interactive effect of OA and heavy metals could be more vulnerable to marine organisms than individual exposures. In the current study, the effect of OA on the toxicity of cadmium (Cd) in the crab Scylla serrata was evaluated. Crab instars (0.07 cm length and 0.1 g weight) were subjected to pH 8.2, 7.8, 7.6, 7.4, 7.2, and 7.0 with and without 0.01 mg l-1 of Cd for 60 days. We noticed a significant decrease in growth, molting, protein, carbohydrate, amino acid, lipid, alkaline phosphatase, and haemocytes of crabs under OA + Cd compared to OA treatment. In contrast, the growth, protein, amino acid, and haemocyte levels were significantly affected by OA, Cd, and its interactions (OA + Cd). However, superoxide dismutase, catalase, lipid peroxidation, glutamic oxaloacetate transaminase, glutamic pyruvate transaminase, and accumulation of Cd in crabs were considerably elevated in OA + Cd treatments compared to OA alone treatments. The present investigation showed that the effect of Cd toxicity might be raised under OA on S. serrata. Our study demonstrated that OA significantly affects the biological indices and oxidative stress responses of S. serrata exposed to Cd toxicity.
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Affiliation(s)
- Said Hamid Thangal
- Department of Zoology, Bharathiar University, Coimbatore, 641046, Tamilnadu, India
| | | | | | - Velusamy Gayathri
- Department of Zoology, Bharathiar University, Coimbatore, 641046, Tamilnadu, India
| | - Krishnan Anandhan
- Department of Zoology, Bharathiar University, Coimbatore, 641046, Tamilnadu, India
| | - Arumugam Yogeshwaran
- Department of Zoology, Bharathiar University, Coimbatore, 641046, Tamilnadu, India
| | | | - Mathan Ramesh
- Department of Zoology, Bharathiar University, Coimbatore, 641046, Tamilnadu, India
| | - Rajendran Rajaram
- Department of Marine Science, Bharathidasan University, Tiruchirappalli, 620024, Tamilnadu, India
| | - Perumal Santhanam
- Department of Marine Science, Bharathidasan University, Tiruchirappalli, 620024, Tamilnadu, India
| | - Balu Alagar Venmathi Maran
- Institute of Integrated Science and Technology, Nagasaki University, 1-14 Bunkyo, Nagasaki, 852-8521, Japan
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Wang C, Han W, Cheng W, Liu D, Wang W, Yan B, Gao H, Hu G. Impact of Ocean Acidification on the Gut Histopathology and Intestinal Microflora of Exopalaemon carinicauda. Animals (Basel) 2023; 13:3299. [PMID: 37894023 PMCID: PMC10603730 DOI: 10.3390/ani13203299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/14/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
Marine crustaceans are severely threatened by environmental factors such as ocean acidification, but, despite the latter's negative impact on growth, molting, and immunity, its effects on intestinal microflora remain poorly understood. This work studied the gut morphology and intestinal microflora of Exopalaemon carinicauda, grown in seawater of different pH levels: 8.1 (control group), 7.4 (AC74 group), and 7.0 (AC70 group). Ocean acidification was found to cause intestinal damage, while significantly altering the microflora's composition. However, the α-diversity did not differ significantly between the groups. At the phylum level, the relative abundance of Proteobacteria decreased in the acidification groups, while at the genus level, the relative abundance of Sphingomonas decreased. Babeliales was a prominent discriminative biomarker in the AC74 group, with Actinobacteriota, Micrococcales, Beijerinckiaceae, Methylobacterium, and Flavobacteriales being the main ones in the AC70 group. The function prediction results also indicated an enrichment of pathways related to metabolism for the acidification groups. At the same time, those related to xenobiotics' biodegradation and metabolism were inhibited in AC74 but enhanced in AC70. This is the first study examining the impact of ocean acidification on the intestinal microflora of crustaceans. The results are expected to provide a better understanding of the interactions between shrimp and their microflora in response to environmental stressors.
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Affiliation(s)
- Chao Wang
- Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; (C.W.); (W.H.); (W.C.); (D.L.); (W.W.); (B.Y.); (H.G.)
| | - Wanyu Han
- Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; (C.W.); (W.H.); (W.C.); (D.L.); (W.W.); (B.Y.); (H.G.)
| | - Weitao Cheng
- Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; (C.W.); (W.H.); (W.C.); (D.L.); (W.W.); (B.Y.); (H.G.)
| | - Dexue Liu
- Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; (C.W.); (W.H.); (W.C.); (D.L.); (W.W.); (B.Y.); (H.G.)
| | - Weili Wang
- Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; (C.W.); (W.H.); (W.C.); (D.L.); (W.W.); (B.Y.); (H.G.)
| | - Binlun Yan
- Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; (C.W.); (W.H.); (W.C.); (D.L.); (W.W.); (B.Y.); (H.G.)
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Huan Gao
- Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; (C.W.); (W.H.); (W.C.); (D.L.); (W.W.); (B.Y.); (H.G.)
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Guangwei Hu
- Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; (C.W.); (W.H.); (W.C.); (D.L.); (W.W.); (B.Y.); (H.G.)
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
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