1
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Zhao L, Harvey BP, Higuchi T, Agostini S, Tanaka K, Murakami-Sugihara N, Morgan H, Baker P, Hall-Spencer JM, Shirai K. Ocean acidification stunts molluscan growth at CO 2 seeps. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162293. [PMID: 36813205 DOI: 10.1016/j.scitotenv.2023.162293] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Ocean acidification can severely affect bivalve molluscs, especially their shell calcification. Assessing the fate of this vulnerable group in a rapidly acidifying ocean is therefore a pressing challenge. Volcanic CO2 seeps are natural analogues of future ocean conditions that offer unique insights into the scope of marine bivalves to cope with acidification. Here, we used a 2-month reciprocal transplantation of the coastal mussel Septifer bilocularis collected from reference and elevated pCO2 habitats to explore how they calcify and grow at CO2 seeps on the Pacific coast of Japan. We found significant decreases in condition index (an indication of tissue energy reserves) and shell growth of mussels living under elevated pCO2 conditions. These negative responses in their physiological performance under acidified conditions were closely associated with changes in their food sources (shown by changes to the soft tissue δ13C and δ15N ratios) and changes in their calcifying fluid carbonate chemistry (based on shell carbonate isotopic and elemental signatures). The reduced shell growth rate during the transplantation experiment was further supported by shell δ13C records along their incremental growth layers, as well as their smaller shell size despite being of comparable ontogenetic ages (5-7 years old, based on shell δ18O records). Taken together, these findings demonstrate how ocean acidification at CO2 seeps affects mussel growth and reveal that lowered shell growth helps them survive stressful conditions.
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Affiliation(s)
- Liqiang Zhao
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
| | - Ben P Harvey
- Shimoda Marine Research Center, University of Tsukuba, Shimoda 415-0025, Japan.
| | - Tomihiko Higuchi
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Sylvain Agostini
- Shimoda Marine Research Center, University of Tsukuba, Shimoda 415-0025, Japan
| | - Kentaro Tanaka
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | | | - Holly Morgan
- School of Biological and Marine Sciences, University of Plymouth, Plymouth PL4 8AA, UK
| | - Phoebe Baker
- School of Biological and Marine Sciences, University of Plymouth, Plymouth PL4 8AA, UK
| | - Jason M Hall-Spencer
- Shimoda Marine Research Center, University of Tsukuba, Shimoda 415-0025, Japan; School of Biological and Marine Sciences, University of Plymouth, Plymouth PL4 8AA, UK
| | - Kotaro Shirai
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
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2
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Li J, Zhou Y, Qin Y, Wei J, Shigong P, Ma H, Li Y, Yuan X, Zhao L, Yan H, Zhang Y, Yu Z. Assessment of the juvenile vulnerability of symbiont-bearing giant clams to ocean acidification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 812:152265. [PMID: 34902424 DOI: 10.1016/j.scitotenv.2021.152265] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/30/2021] [Accepted: 12/04/2021] [Indexed: 06/14/2023]
Abstract
Ocean acidification (OA) severely affects marine bivalves, especially their calcification processes. However, very little is known about the fate of symbiont-bearing giant clams in the acidified oceans, which hinders our ability to develop strategies to protect this ecologically and economically important group in coral reef ecosystems. Here, we explored the integrated juvenile responses of fluted giant clam Tridacna squamosa (Lamarck, 1819) to acidified seawater at different levels of biological organization. Our results revealed that OA did not cause a significant reduction in survival and shell growth performance, indicating that T. squamosa juveniles are tolerated to moderate acidification. Yet, significantly reduced net calcification rate demonstrated the calcifying physiology sensitivity to OA, in line with significant declines in symbiont photosynthetic yield and zooxanthellae density which in turn lowered the amount of energy supply for energetically expensive calcification processes. Subsequent transcriptome sequencing and comparative analysis of differentially expressed genes revealed that the regulation of calcification processes, such as transport of calcification substrates, acid-base regulation, synthesis of organic matrix in the calcifying fluid, as well as metabolic depression were the major response to OA. Taken together, the integration of physiological and molecular responses can provide a comprehensive understanding of how the early life history stages of giant clams respond to OA and make an important leap forward in assessing their fate under future ocean conditions.
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Affiliation(s)
- Jun Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Yinyin Zhou
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Yanpin Qin
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Jinkuan Wei
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Pengyang Shigong
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Haitao Ma
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Yunqing Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Xiangcheng Yuan
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Liqiang Zhao
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
| | - Hong Yan
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Yuehuan Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China.
| | - Ziniu Yu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China.
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3
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Baag S, Mandal S. Combined effects of ocean warming and acidification on marine fish and shellfish: A molecule to ecosystem perspective. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 802:149807. [PMID: 34450439 DOI: 10.1016/j.scitotenv.2021.149807] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/06/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
It is expected that by 2050 human population will exceed nine billion leading to increased pressure on marine ecosystems. Therefore, it is conjectured various levels of ecosystem functioning starting from individual to population-level, species distribution, food webs and trophic interaction dynamics will be severely jeopardized in coming decades. Ocean warming and acidification are two prime threats to marine biota, yet studies about their cumulative effect on marine fish and shellfishes are still in its infancy. This review assesses existing information regarding the interactive effects of global environmental factors like warming and acidification in the perspective of marine capture fisheries and aquaculture industry. As climate change continues, distribution pattern of species is likely to be altered which will impact fisheries and fishing patterns. Our work is an attempt to compile the existing literatures in the biological perspective of the above-mentioned stressors and accentuate a clear outline of knowledge in this subject. We reviewed studies deciphering the biological consequences of warming and acidification on fish and shellfishes in the light of a molecule to ecosystem perspective. Here, for the first time impacts of these two global environmental drivers are discussed in a holistic manner taking into account growth, survival, behavioural response, prey predator dynamics, calcification, biomineralization, reproduction, physiology, thermal tolerance, molecular level responses as well as immune system and disease susceptibility. We suggest urgent focus on more robust, long term, comprehensive and ecologically realistic studies that will significantly contribute to the understanding of organism's response to climate change for sustainable capture fisheries and aquaculture.
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Affiliation(s)
- Sritama Baag
- Marine Ecology Laboratory, Department of Life Sciences, Presidency University, 86/1, College Street, Kolkata 700073, India
| | - Sumit Mandal
- Marine Ecology Laboratory, Department of Life Sciences, Presidency University, 86/1, College Street, Kolkata 700073, India.
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4
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da Silva Souza L, Bonnail E, Maranho LA, Pusceddu FH, Cortez FS, Cesar A, Ribeiro DA, Riba I, de Souza Abessa DM, DelValls Á, Pereira CDS. Sub-lethal combined effects of illicit drug and decreased pH on marine mussels: A short-time exposure to crack cocaine in CO 2 enrichment scenarios. MARINE POLLUTION BULLETIN 2021; 171:112735. [PMID: 34303056 DOI: 10.1016/j.marpolbul.2021.112735] [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: 04/28/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
The increasing CO2-concentrations in the atmosphere promote ocean acidification. Seawater chemistry changes interact with contaminants, such as illicit drugs in the coastal zones. This work evaluates impacts of pH decrease and crack-cocaine exposure on the commercial mussel Perna perna through biomarker responses (lysosomal membrane stability, lipid peroxidation, and DNA strand breaks). The organisms were exposed to different crack-cocaine concentrations (0.5, 5.0, and 50 μg L-1) combined with different pH values (8.3, 8.0, 7.5, 7.0, 6.5, and 6.0) for 96 h. Crack-cocaine in the different acidification scenarios triggered cyto-genotoxicity, which affected the overall health of mussels exposed to cocaine environmentally relevant concentration. This study produced the first data on biomarker responses associated with CO2-induced acidification and illicit drugs (crack-cocaine) in marine organisms.
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Affiliation(s)
- Lorena da Silva Souza
- Department of Physico-Chemistry, Aquatic Systems Research Group, UNESCO/UNITWIN WiCop, Faculty of Marine and Environmental Sciences, University of Cádiz, Cádiz, Spain
| | - Estefanía Bonnail
- Centro de Investigaciones Costeras-Universidad de Atacama (CIC-UDA), University of Atacama, Copiapó, Chile.
| | - Luciane Alves Maranho
- Department of Ecotoxicology, Santa Cecília University (UNISANTA), Santos, SP, Brazil
| | - Fabio Hermes Pusceddu
- Department of Ecotoxicology, Santa Cecília University (UNISANTA), Santos, SP, Brazil
| | - Fernando Sanzi Cortez
- Department of Ecotoxicology, Santa Cecília University (UNISANTA), Santos, SP, Brazil
| | - Augusto Cesar
- Department of Ecotoxicology, Santa Cecília University (UNISANTA), Santos, SP, Brazil; Department of Marine Sciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
| | - Daniel Araki Ribeiro
- Department of Marine Sciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
| | - Inmaculada Riba
- Department of Physico-Chemistry, Aquatic Systems Research Group, UNESCO/UNITWIN WiCop, Faculty of Marine and Environmental Sciences, University of Cádiz, Cádiz, Spain
| | - Denis M de Souza Abessa
- Study Center on Pollution and Aquatic Ecotoxicology, Paulista State University (UNESP), São Vicente, SP, Brazil
| | - Ángel DelValls
- Department of Ecotoxicology, Santa Cecília University (UNISANTA), Santos, SP, Brazil
| | - Camilo Dias Seabra Pereira
- Department of Ecotoxicology, Santa Cecília University (UNISANTA), Santos, SP, Brazil; Department of Marine Sciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
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5
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Zheng X, Lei S, Zhao S, Ye G, Ma R, Liu L, Xie Y, Shi X, Chen J. Temperature elevation and acidification damage microstructure of abalone via expression change of crystal induction genes. MARINE ENVIRONMENTAL RESEARCH 2020; 162:105114. [PMID: 32892151 DOI: 10.1016/j.marenvres.2020.105114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 08/07/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
Ocean warming and acidification caused by global climate change interferes with the shell growth of mollusks. In abalone Haliotis discus hannai, the microstructural changes in the shell under stress are unclear, and the effect of thermal stress on biomineralization is unknown. The lack of gene information has also hampered the study of abalone biomineralization mechanisms. In this study, the microstructure of reconstructed shell in H. discus hannai was observed to determine the effects of thermal and acidification stress on shell growth. Three nacre protein genes, Hdh-AP7, Hdh-AP24, and Hdh-perlustrin, were characterized, and their expression pattern during shell repair was measured under thermal and acidification stress and compared with those of two known biomineralization-related genes, Hdh-AP-1 and Hdh-defensin. The stress resulted in aragonite plates with corroded or irregular microstructures. The gene expression of two nacre proteins (Hdh-AP7 and Hdh-AP24), which directly induce crystal formation, were more sensitive to thermal stress than to acidification, but the expression of the regulatory nacre protein (Hdh-perlustrin) and the two known genes (Hdh-AP-1 and Hdh-defensin), which are also related to immunity, showed an interlinked, complex pattern change. We concluded that high temperature and acidification damages the shell microstructure by disturbing the expression pattern of biomineralization-related genes.
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Affiliation(s)
- Xiangnan Zheng
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fujian, Fuzhou, 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fujian, Fuzhou, 350108, China
| | - Shanshan Lei
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fujian, Fuzhou, 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fujian, Fuzhou, 350108, China
| | - Shuxian Zhao
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fujian, Fuzhou, 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fujian, Fuzhou, 350108, China
| | - Ganping Ye
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fujian, Fuzhou, 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fujian, Fuzhou, 350108, China
| | - Ruijuan Ma
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fujian, Fuzhou, 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fujian, Fuzhou, 350108, China
| | - Lemian Liu
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fujian, Fuzhou, 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fujian, Fuzhou, 350108, China
| | - Youping Xie
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fujian, Fuzhou, 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fujian, Fuzhou, 350108, China
| | - Xinguo Shi
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fujian, Fuzhou, 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fujian, Fuzhou, 350108, China.
| | - Jianfeng Chen
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fujian, Fuzhou, 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fujian, Fuzhou, 350108, China.
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6
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Zhao L, Lu Y, Yang F, Liang J, Deng Y. Transgenerational biochemical effects of seawater acidification on the Manila clam (Ruditapes philippinarum). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136420. [PMID: 31923699 DOI: 10.1016/j.scitotenv.2019.136420] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/14/2019] [Accepted: 12/28/2019] [Indexed: 06/10/2023]
Abstract
Ocean acidification can negatively impact marine bivalves. Pivotal to projecting their fate is the ability to acclimate and adapt to shifts in seawater chemistry. Transgenerational plasticity enables marine bivalves to acclimate, yet the underlying mechanisms at different levels of biological organization remain poorly understood. Here, we performed a transgenerational experiment to understand biochemical responses of the Manila clam, Ruditapes philippinarum, following exposure to moderately reduced seawater pH (from 8.1 to 7.7). Activities of tissue calcification-relevant enzymes, such as carbonic anhydrase (CA), acid phosphatase (ACP) and alkaline phosphatase (ALP), energy-metabolizing enzymes, such as Na+/K+-ATPase (NKA) and Ca2+/Mg2+-ATPase (CMA), as well as tissue energy reserves (glycogen, lipid and protein) were assayed. With decreasing seawater pH, adult R. philippinarum exhibited significantly increased CA activity, and especially the clams with a history of transgenerational exposure displaying significantly higher CA activity than those spawned from parents exposed to ambient seawater pH. Yet, ACP and ALP activities remained unaffected. Transgenerational exposure to reduced seawater pH led to significant increases of NKA activity, while no transgenerational response of CMA activity was observed. Tissue glycogen and lipid contents were significantly depleted under acidified conditions regardless of transgenerational exposure. Yet, transgenerational alleviation in the net protein degradation was found. These findings suggest that our current understanding of transgenerational responses is still limited by the achievable time-window possible in the laboratory. While the energetic budget is lower under acidified conditions, there is no evidence of transgenerational recovery in term of energetic budget. Therefore, this work demonstrates that the critical basis of ocean acidification resilience can most likely be explained in energetic terms.
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Affiliation(s)
- Liqiang Zhao
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
| | - Yanan Lu
- College of Life Science and Fisheries, Dalian Ocean University, Dalian 116023, China
| | - Feng Yang
- College of Life Science and Fisheries, Dalian Ocean University, Dalian 116023, China
| | - Jian Liang
- Department of Fisheries, Tianjin Agricultural University, Tianjin 300384, China
| | - Yuewen Deng
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
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7
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Chandra Rajan K, Vengatesen T. Molecular adaptation of molluscan biomineralisation to high-CO 2 oceans - The known and the unknown. MARINE ENVIRONMENTAL RESEARCH 2020; 155:104883. [PMID: 32072987 DOI: 10.1016/j.marenvres.2020.104883] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 01/11/2020] [Accepted: 01/19/2020] [Indexed: 06/10/2023]
Abstract
High-CO2 induced ocean acidification (OA) reduces the calcium carbonate (CaCO3) saturation level (Ω) and the pH of oceans. Consequently, OA is causing a serious threat to several ecologically and economically important biomineralising molluscs. Biomineralisation is a highly controlled biochemical process by which molluscs deposit their calcareous structures. In this process, shell matrix proteins aid the nucleation, growth and assemblage of the CaCO3 crystals in the shell. These molluscan shell proteins (MSPs) are, ultimately, responsible for determination of the diverse shell microstructures and mechanical strength. Recent studies have attempted to integrate gene and protein expression data of MSPs with shell structure and mechanical properties. These advances made in understanding the molecular mechanism of biomineralisation suggest that molluscs either succumb or adapt to OA stress. In this review, we discuss the fate of biomineralisation process in future high-CO2 oceans and its ultimate impact on the mineralised shell's structure and mechanical properties from the perspectives of limited substrate availability theory, proton flux limitation model and the omega myth theory. Furthermore, studying the interplay of energy availability and differential gene expression is an essential first step towards understanding adaptation of molluscan biomineralisation to OA, because if there is a need to change gene expression under stressors, any living system would require more energy than usual. To conclude, we have listed, four important future research directions for molecular adaptation of molluscan biomineralisation in high-CO2 oceans: 1) Including an energy budgeting factor while understanding differential gene expression of MSPs and ion transporters under OA. 2) Unraveling the genetic or epigenetic changes related to biomineralisation under stressors to help solving a bigger picture about future evolution of molluscs, and 3) Understanding Post Translational Modifications of MSPs with and without stressors. 4) Understanding carbon uptake mechanisms across taxa with and without OA to clarify the OA theories on Ω.
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Affiliation(s)
- Kanmani Chandra Rajan
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China; State Key Laboratory of Marine Pollution, Hong Kong SAR, China.
| | - Thiyagarajan Vengatesen
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China; State Key Laboratory of Marine Pollution, Hong Kong SAR, China.
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8
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Zhao L, Milano S, Tanaka K, Liang J, Deng Y, Yang F, Walliser EO, Schöne BR. Trace elemental alterations of bivalve shells following transgenerational exposure to ocean acidification: Implications for geographical traceability and environmental reconstruction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 705:135501. [PMID: 31846816 DOI: 10.1016/j.scitotenv.2019.135501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 11/09/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
Trace elements of bivalve shells can potentially record the physical and chemical properties of the ambient seawater during shell formation, thereby providing valuable information on environmental conditions and provenance of the bivalves. In an acidifying ocean, whether and how seawater acidification affects the trace elemental composition of bivalve shells is largely unknown. Here, we investigated the transgenerational effects of OA projected for the end of the 21st century on the incorporation of trace elements into shells of the Manila clam, Ruditapes philippinarum. Neither seawater pH nor transgenerational exposure affected the Mg and Sr composition of the shells. Compared with clams grown under ambient conditions, specimens exposed to elevated CO2 levels incorporated significantly higher amounts of Cu, Zn, Ba and Pb into their shells, in line with the fact that at lower pH, these elements in seawater occur at higher fractions in free forms which are biologically available. Transgenerational effects manifested themselves significantly during the incorporation of Cu and Zn into the shells, most likely because Cu and Zn are biologically essential trace elements for metabolic processes. In addition, the plasticity of metabolism toward energetic efficiency following transgenerational exposure confers the clams enhanced ability to discriminate against Cu and Zn during the uptake from the ambient environment to the site of calcification. In the context of near-future OA scenarios, these findings may provide unique insights into the two primary applications of trace elements of bivalve shells as geographical tracers and proxies of environmental conditions.
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Affiliation(s)
- Liqiang Zhao
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China; Institute of Geosciences, University of Mainz, Mainz 55128, Germany; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
| | - Stefania Milano
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany; Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig 04103, Germany
| | - Kentaro Tanaka
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Jian Liang
- Department of Fisheries, Tianjin Agricultural University, Tianjin 300384, China
| | - Yuewen Deng
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
| | - Feng Yang
- College of Life Science and Fisheries, Dalian Ocean University, Dalian 116023, China
| | - Eric O Walliser
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany
| | - Bernd R Schöne
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany
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9
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Zheng X, Zhao S, Lei S, Ma R, Liu L, Xie Y, Shi X, Chen J. Cloning and characterization of a novel Lustrin A gene from Haliotis discus hannai. Comp Biochem Physiol B Biochem Mol Biol 2020; 240:110385. [DOI: 10.1016/j.cbpb.2019.110385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 10/02/2019] [Accepted: 11/05/2019] [Indexed: 10/25/2022]
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Cummings VJ, Smith AM, Marriott PM, Peebles BA, Halliday NJ. Effect of reduced pH on physiology and shell integrity of juvenile Haliotis iris (pāua) from New Zealand. PeerJ 2019; 7:e7670. [PMID: 31579589 PMCID: PMC6765356 DOI: 10.7717/peerj.7670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 08/13/2019] [Indexed: 11/20/2022] Open
Abstract
The New Zealand pāua or black footed abalone, Haliotis iris, is one of many mollusc species at potential risk from ocean acidification and warming. To investigate possible impacts, juvenile pāua (~24 mm shell length) were grown for 4 months in seawater pH/pCO2 conditions projected for 2100. End of century seawater projections (pHT 7.66/pCO2 ~1,000 μatm) were contrasted with local ambient conditions (pHT 8.00/pCO2 ~400 μatm) at two typical temperatures (13 and 15 °C). We used a combination of methods (morphometric, scanning electron microscopy, X-ray diffraction) to investigate effects on juvenile survival and growth, as well as shell mineralogy and integrity. Lowered pH did not affect survival, growth rate or condition, but animals grew significantly faster at the higher temperature. Juvenile pāua were able to biomineralise their inner nacreous aragonite layer and their outer prismatic calcite layer under end-of-century pH conditions, at both temperatures, and carbonate composition was not affected. There was some thickening of the nacre layer in the newly deposited shell with reduced pH and also at the higher temperature. Most obvious was post-depositional alteration of the shell under lowered pH: the prismatic calcite layer was thinner, and there was greater etching of the external shell surface; this dissolution was greater at the higher temperature. These results demonstrate the importance of even a small (2 °C) difference in temperature on growth and shell characteristics, and on modifying the effects at lowered pH. Projected CO2-related changes may affect shell quality of this iconic New Zealand mollusc through etching (dissolution) and thinning, with potential implications for resilience to physical stresses such as predation and wave action.
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Affiliation(s)
- Vonda J. Cummings
- National Institute of Water and Atmospheric Research, Wellington, New Zealand
| | - Abigail M. Smith
- Department of Marine Science, University of Otago, Dunedin, New Zealand
| | - Peter M. Marriott
- National Institute of Water and Atmospheric Research, Wellington, New Zealand
| | - Bryce A. Peebles
- Department of Marine Science, University of Otago, Dunedin, New Zealand
| | - N. Jane Halliday
- National Institute of Water and Atmospheric Research, Wellington, New Zealand
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Zhao L, Shirai K, Murakami-Sugihara N, Higuchi T, Sakamoto TT, Miyajima T, Tanaka K. Retrospective monitoring of salinity in coastal waters with mussel shells. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 671:666-675. [PMID: 30939319 DOI: 10.1016/j.scitotenv.2019.03.405] [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: 02/20/2019] [Revised: 03/25/2019] [Accepted: 03/25/2019] [Indexed: 06/09/2023]
Abstract
Sea surface salinity (SSS) is a key parameter to understand and predict many physical, chemical and biological processes in dynamic coastal environments. Yet, in many regions, instrumental measurements are spatially sparse and insufficiently long, hindering our ability to document changes, causes, and consequences of SSS across different time scales. Therefore, there is an need to develop a robust proxy to extend SSS records back in time. Here, we test whether SSS can be reconstructed reliably and quantitatively from shell oxygen isotopic ratios (δ18Oshell) of the mussel Mytilus galloprovincialis (Lamarck, 1819) in Otsuchi Bay, Northern Japan. δ18Oshell ratios vary spatially and temporally and exhibit strong linear correlations with both sea surface temperature (SST) and SSS measurements, indicating that the composite signal recorded by δ18Oshell measurably responds to variations in both parameters. By combining contemporaneous variations of SST and δ18Oshell, SSS records encoded into mussel shells are deconvolved that significantly correlate with in situ SSS values. To further validate the robustness of δ18Oshell as a quantitative SSS proxy, high-resolution and temporally aligned time-series of δ18Oshell-derived SSS are reconstructed that are highly synchronous with the instrumental records. In particular, two lowered SSS scenarios occur concomitantly with periods of the summer monsoon and typhoon events. δ18Oshell-derived SSS time-series are also comparable to those from numerical modeling. In conclusion, our findings demonstrate that mussel δ18Oshell signatures can be used as a useful tool to construct high-resolution records of SSS in the coastal regions.
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Affiliation(s)
- Liqiang Zhao
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
| | - Kotaro Shirai
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | | | - Tomihiko Higuchi
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Takashi T Sakamoto
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Toshihiro Miyajima
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Kiyoshi Tanaka
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
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