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Martins Medeiros IP, Souza MM. Acid times in physiology: A systematic review of the effects of ocean acidification on calcifying invertebrates. ENVIRONMENTAL RESEARCH 2023; 231:116019. [PMID: 37119846 DOI: 10.1016/j.envres.2023.116019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/12/2023]
Abstract
The reduction in seawater pH from rising levels of carbon dioxide (CO2) in the oceans has been recognized as an important force shaping the future of marine ecosystems. Therefore, numerous studies have reported the effects of ocean acidification (OA) in different compartments of important animal groups, based on field and/or laboratory observations. Calcifying invertebrates have received considerable attention in recent years. In the present systematic review, we have summarized the physiological responses to OA in coral, echinoderm, mollusk, and crustacean species exposed to predicted ocean acidification conditions in the near future. The Scopus, Web of Science, and PubMed databases were used for the literature search, and 75 articles were obtained based on the inclusion criteria. Six main physiological responses have been reported after exposure to low pH. Growth (21.6%), metabolism (20.8%), and acid-base balance (17.6%) were the most frequent among the phyla, while calcification and growth were the physiological responses most affected by OA (>40%). Studies show that the reduction of pH in the aquatic environment, in general, supports the maintenance of metabolic parameters in invertebrates, with redistribution of energy to biological functions, generating limitations to calcification, which can have severe consequences for the health and survival of these organisms. It should be noted that the OA results are variable, with inter and/or intraspecific differences. In summary, this systematic review offers important scientific evidence for establishing paradigms in the physiology of climate change in addition to gathering valuable information on the subject and future research perspectives.
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Affiliation(s)
- Isadora Porto Martins Medeiros
- Programa de Pós-Graduação em Ciências Fisiológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, Rio Grande do Sul, Brazil.
| | - Marta Marques Souza
- Programa de Pós-Graduação em Ciências Fisiológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, Rio Grande do Sul, Brazil; Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, Rio Grande do Sul, Brazil
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2
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Guo X, Huang M, Luo X, You W, Ke C. Effects of one-year exposure to ocean acidification on two species of abalone. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158144. [PMID: 35988613 DOI: 10.1016/j.scitotenv.2022.158144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/13/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Ocean acidification (OA) resulting from the absorption of excess atmospheric CO2 by the ocean threatens the survival of marine calcareous organisms, including mollusks. This study investigated the effects of OA on adults of two abalone species (Haliotis diversicolor, a subtropical species, and Haliotis discus hannai, a temperate species). Abalone were exposed to three pCO2 conditions for 1 year (ambient, ~ 880, and ~ 1600 μatm), and parameters, including mortality, physiology, immune system, biochemistry, and carry-over effects, were measured. Survival decreased significantly at ~ 800 μatm pCO2 for H. diversicolor, while H. discus hannai survival was negatively affected only at a higher OA level (~ 1600 μatm pCO2). H. diversicolor exhibited depressed metabolic and excretion rates and a higher O:N ratio under OA, indicating a shift to lipids as a metabolism substrate, while these physiological parameters in H. discus hannai were robust to OA. Both abalone failed to compensate for the pH decrease of their internal fluids because of the lowered hemolymph pH under OA. However, the reduced hemolymph pH did not affect total hemocyte counts or tested biomarkers. Additionally, H. discus hannai increased its hemolymph protein content under OA, which could indicate enhanced immunity. Larvae produced by adults exposed to the three pCO2 levels were cultured in the same pCO2 conditions and larval deformation and shell length were measured to observe carry-over effects. Enhanced OA tolerance was observed for H. discus hannai exposed under both of the OA treatments, while that was only observed following parental pCO2 ~ 880 μatm exposure for H. diversicolor. Following pCO2 ~ 1600 μatm parental exposure, H. diversicolor offspring exhibited higher deformation and lower shell growth in all pCO2 treatments. In general, H. diversicolor were more susceptible to OA compared with H. discus hannai, suggesting that H. diversicolor could be unable to adapt to acidified oceans in the future.
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Affiliation(s)
- Xiaoyu Guo
- College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou 362000, PR China; XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China; Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou Normal University, Quanzhou 362000, PR China
| | - Miaoqin Huang
- XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Xuan Luo
- XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Weiwei You
- XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Caihuan Ke
- XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China.
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3
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Gibbs MC, Parker LM, Scanes E, Byrne M, O'Connor WA, Ross PM. Energetic lipid responses of larval oysters to ocean acidification. MARINE POLLUTION BULLETIN 2021; 168:112441. [PMID: 33991985 DOI: 10.1016/j.marpolbul.2021.112441] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 04/25/2021] [Accepted: 04/26/2021] [Indexed: 06/12/2023]
Abstract
Climate change will increase energetic demands on marine invertebrate larvae and make planktonic food more unpredictable. This study determined the impact of ocean acidification on larval energetics of the oysters Saccostrea glomerata and Crassostrea gigas. Larvae of both oysters were reared until the 9-day-old, umbonate stage under orthogonal combinations of ambient and elevated p CO 2 (340 and 856 μatm) and food was limited. Elevated p CO 2 reduced the survival, size and larval energetics, larvae of C. gigas being more resilient than S. glomerata. When larvae were fed, elevated p CO 2 reduced lipid levels across all lipid classes. When larvae were unfed elevated p CO 2 resulted in increased lipid levels and mortality. Ocean acidification and food will interact to limit larval energetics. Larvae of S. glomerata will be more impacted than C. gigas and this is of concern given their aquacultural status and ecological function.
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Affiliation(s)
- Mitchell C Gibbs
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia; The Sydney Institute of Marine Science, Mosman, New South Wales 2088, Australia
| | - Laura M Parker
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia; The University of New South Wales, School of Biological, Earth and Environmental Sciences, Kensington, New South Wales 2052, Australia
| | - Elliot Scanes
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia; The Sydney Institute of Marine Science, Mosman, New South Wales 2088, Australia
| | - Maria Byrne
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia; The Sydney Institute of Marine Science, Mosman, New South Wales 2088, Australia
| | - Wayne A O'Connor
- New South Wales Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, New South Wales 2316, Australia
| | - Pauline M Ross
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia; The Sydney Institute of Marine Science, Mosman, New South Wales 2088, Australia.
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4
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Sa-Nguansil S, Wangkulangkul K. Salinity tolerance in different life history stages of an invasive false mussel Mytilopsis sallei Recluz, 1849: implications for its restricted distribution. MOLLUSCAN RESEARCH 2020. [DOI: 10.1080/13235818.2020.1753902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Suebpong Sa-Nguansil
- Department of Biology, Faculty of Science, Thaksin University, Phatthalung, Thailand
| | - Kringpaka Wangkulangkul
- Coastal Ecology Lab, Department of Biology, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
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5
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Tan K, Zheng H. Ocean acidification and adaptive bivalve farming. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 701:134794. [PMID: 31715479 DOI: 10.1016/j.scitotenv.2019.134794] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/30/2019] [Accepted: 10/01/2019] [Indexed: 06/10/2023]
Abstract
Multiple lines of evidence, ranging from time series field observations to climate change stimulation experiments demonstrate the negative effects of global warming and ocean acidification (OA) on bivalve molluscs. The impact of global warming on bivalve aquaculture has recently been reviewed. However, the impact of OA on bivalve aquaculture has received relatively less attention. Although there are many reports on the effects of OA on bivalves, this information is poorly organized and the connection between OA and bivalve aquaculture is unclear. Therefore, understanding the potential impact of acidification on ecosystems and bivalve aquaculture is of prime importance. Here, we provide a comprehensive scientific review of the impact of OA on bivalves and propose mitigation measures for future bivalve farming. This information will help to establish aquaculture and fisheries management plans to be implemented in commercial fisheries and nature conservation. In general, scientific evidence suggests that OA threatens bivalves by diminishing the availability of carbonate minerals, which may adversely affect the development of early life stages, calcification, growth, byssus attachment and survival of bivalves. The Integrated multi-trophic aquaculture (IMTA) approach is a useful method in slowing the effects of climate change, thereby providing longer adaptation period for bivalves to changing ocean conditions. However, for certain regions that experience intense OA effects or for certain bivalve species that have much longer generational time, IMTA alone may not be sufficient to protect bivalves from the adverse effects of climate change. Therefore, it is highly recommended to combine IMTA and genetic breeding methods to facilitate transgenerational acclimation or evolution processes to enhance the climate resilience of bivalves.
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Affiliation(s)
- Karsoon Tan
- Key Laboratory of Marine Biotechnology of Guangdong Province, Shantou University, Shantou 515063, China; Mariculture Research Center for Subtropical Shellfish & Algae of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
| | - Huaiping Zheng
- Key Laboratory of Marine Biotechnology of Guangdong Province, Shantou University, Shantou 515063, China; Mariculture Research Center for Subtropical Shellfish & Algae of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China.
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6
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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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7
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Smith KE, Byrne M, Deaker D, Hird CM, Nielson C, Wilson-McNeal A, Lewis C. Sea urchin reproductive performance in a changing ocean: poor males improve while good males worsen in response to ocean acidification. Proc Biol Sci 2019; 286:20190785. [PMID: 31337311 PMCID: PMC6661356 DOI: 10.1098/rspb.2019.0785] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/28/2019] [Indexed: 12/12/2022] Open
Abstract
Ocean acidification (OA) is predicted to be a major driver of ocean biodiversity change. At projected rates of change, sensitive marine taxa may not have time to adapt. Their persistence may depend on pre-existing inter-individual variability. We investigated individual male reproductive performance under present-day and OA conditions using two representative broadcast spawners, the sea urchins Lytechinus pictus and Heliocidaris erythrogramma. Under the non-competitive individual ejaculate scenario, we examined sperm functional parameters (e.g. swimming speed, motility) and their relationship with fertilization success under current and near-future OA conditions. Significant inter-individual differences in almost every parameter measured were identified. Importantly, we observed strong inverse relationships between individual fertilization success rate under current conditions and change in fertilization success under OA. Individuals with a high fertilization success under current conditions had reduced fertilization under OA, while individuals with a low fertilization success under current conditions improved. Change in fertilization success ranged from -67% to +114% across individuals. Our results demonstrate that while average population fertilization rates remain similar under OA and present-day conditions, the contribution by different males to the population significantly shifts, with implications for how selection will operate in a future ocean.
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Affiliation(s)
- Kathryn E. Smith
- College of Live and Environmental Sciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK
| | - Maria Byrne
- Schools of Medical and Biological Sciences, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Dione Deaker
- Schools of Medical and Biological Sciences, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Cameron M. Hird
- College of Live and Environmental Sciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK
| | - Clara Nielson
- College of Live and Environmental Sciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK
| | - Alice Wilson-McNeal
- College of Live and Environmental Sciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK
| | - Ceri Lewis
- College of Live and Environmental Sciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK
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8
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Su W, Shi W, Han Y, Hu Y, Ke A, Wu H, Liu G. The health risk for seafood consumers under future ocean acidification (OA) scenarios: OA alters bioaccumulation of three pollutants in an edible bivalve species through affecting the in vivo metabolism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:2987-2995. [PMID: 30373075 DOI: 10.1016/j.scitotenv.2018.10.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/22/2018] [Accepted: 10/04/2018] [Indexed: 06/08/2023]
Abstract
The current knowledge about the effect of pCO2-driven ocean acidification on the bioaccumulation of pollutants in marine species is still scarce, as only limited types of pollutants have been investigated. Therefore, to obtain a better understanding of the effect of ocean acidification on the process of bioaccumulation and subsequent food safety, the accumulation of benzo[a]pyrene (B[a]P), chloramphenicol (CAP), and nitrofurazone (NFZ) in an edible bivalve species, Tegillarca granosa, under present and near-future ocean acidification scenarios was investigated in the present study. The health risks associated with consuming contaminated blood clams were also assessed using target hazard quotient (THQ), lifetime cancer risk (CR), or margin of exposure (MoE). To explain the alterations in bioaccumulation of these pollutants, the expressions of genes encoding corresponding key metabolic proteins were analyzed as well. The results obtained showed that ocean acidification exerted a significant effect on the accumulation of B[a]P, NFZ, and CAP in the clams. After four-week exposure to B[a]P, NFZ, or CAP contaminated seawater acidified with CO2 at pH 7.8 and 7.4, significantly greater amounts of B[a]P and lower amounts of NFZ and CAP were accumulated in the clams compared to that in the control. Although no non-carcinogenic risk of consuming B[a]P-contaminated blood clams was detected using the THQ values obtained, the CR values obtained indicated a high life-time risk in all groups. In addition, according to the MoE values obtained, the health risks in terms of consuming NFZ- and CAP-contaminated clams were significantly reduced under ocean acidification scenarios but still cannot be ignored, especially for children. The gene expression results showed that the ability of clams to eliminate B[a]P may be significantly constrained, whereas the ability to eliminate NFZ and CAP may be enhanced under ocean acidification scenarios, indicating that the changes in the accumulation of these pollutants may be due to the altered in vivo metabolism.
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Affiliation(s)
- Wenhao Su
- College of Animal Science, Zhejiang University, Hangzhou, PR China
| | - Wei Shi
- College of Animal Science, Zhejiang University, Hangzhou, PR China
| | - Yu Han
- College of Animal Science, Zhejiang University, Hangzhou, PR China
| | - Yuan Hu
- Zhejiang Mariculture Research Institute, Wenzhou, PR China
| | - Aiying Ke
- Zhejiang Mariculture Research Institute, Wenzhou, PR China
| | - Hongxi Wu
- Zhejiang Fisheries Technology Extension Station, Hangzhou, PR China
| | - Guangxu Liu
- College of Animal Science, Zhejiang University, Hangzhou, PR China.
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9
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Lu Y, Wang L, Wang L, Cong Y, Yang G, Zhao L. Deciphering carbon sources of mussel shell carbonate under experimental ocean acidification and warming. MARINE ENVIRONMENTAL RESEARCH 2018; 142:141-146. [PMID: 30337051 DOI: 10.1016/j.marenvres.2018.10.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/11/2018] [Accepted: 10/12/2018] [Indexed: 06/08/2023]
Abstract
Ocean acidification and warming is widely reported to affect the ability of marine bivalves to calcify, but little is known about the underlying mechanisms. In particular, the response of their calcifying fluid carbonate chemistry to changing seawater carbonate chemistry remains poorly understood. The present study deciphers sources of the dissolved inorganic carbon (DIC) in the calcifying fluid of the blue mussel (Mytilus edulis) reared at two pH (8.1 and 7.7) and temperature (16 and 22 °C) levels for five weeks. Stable carbon isotopic ratios of seawater DIC, mussel soft tissues and shells were measured to determine the relative contribution of seawater DIC and metabolically generated carbon to the internal calcifying DIC pool. At pH 8.1, the percentage of seawater DIC synthesized into shell carbonate decreases slightly from 83.8% to 80.3% as temperature increases from 16 to 22 °C. Under acidified conditions, estimates of percent seawater DIC incorporation decreases clearly to 65.6% at 16 °C and to 62.3% at 22 °C, respectively. These findings indicate that ongoing ocean acidification and warming may interfere with the calcification physiology of M. edulis through interfering with its ability to efficiently extract seawater DIC to the calcifying front.
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Affiliation(s)
- Yanan Lu
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Li Wang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Lianshun Wang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Yuting Cong
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Guojun Yang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Liqiang Zhao
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, 277-8564, Japan; Institute of Geosciences, University of Mainz, Mainz, 55128, Germany.
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10
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Scanes E, Parker LM, O'Connor WA, Gibbs MC, Ross PM. Copper and ocean acidification interact to lower maternal investment, but have little effect on adult physiology of the Sydney rock oyster Saccostrea glomerata. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 203:51-60. [PMID: 30077126 DOI: 10.1016/j.aquatox.2018.07.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/26/2018] [Accepted: 07/26/2018] [Indexed: 06/08/2023]
Abstract
It remains unknown how molluscs will respond to oceans which are increasingly predicted to be warmer, more acidic, and heavily polluted. Ocean acidification and trace metals will likely interact to increase the energy demands of marine organisms, especially oysters. This study tested the interactive effect of exposure to elevated pCO2 and copper on the energetic demands of the Sydney rock oyster (Saccostrea glomerata) during reproductive conditioning and determined whether there were any positive or negative effects on their offspring. Oysters were exposed to elevated pCO2 (1000 μatm) and elevated copper (Cu 50 μg L-1 [0.787 μM]) in an orthogonal design for eight weeks during reproductive conditioning. After eight weeks, energetic demands on oysters were measured including standard metabolic rate (SMR), nitrogen excretion, molar oxygen to nitrogen (O:N) ratio, and pHe of adult oysters as well as the size and total lipid content of their eggs. To determine egg viability, the gametes were collected and fertilised from adult oysters, the percentage of embryos that had reached the trochophore stage after 24 h was recorded. Elevated pCO2 caused a lower extracellular pH and there was a greater O:N ratio in adult oysters exposed to copper. While the two stressors did not interact to cause significant effects on adult physiology, they did interact to reduce the size and lipid content of eggs indicating that energy demand on adult oysters was greater when both elevated pCO2 and copper were combined. Despite the lower energy, there were no negative effects on early embryonic development. In conclusion, elevated pCO2 can interact with metals and cause greater energetic demands on oysters; in response oysters may lower maternal investment to offspring.
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Affiliation(s)
- Elliot Scanes
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, NSW, 2006, Australia; Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach Road, Taylors Beach, NSW, 2316, Australia.
| | - Laura M Parker
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, NSW, 2006, Australia
| | - Wayne A O'Connor
- Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach Road, Taylors Beach, NSW, 2316, Australia
| | - Mitchell C Gibbs
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, NSW, 2006, Australia
| | - Pauline M Ross
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, NSW, 2006, Australia
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11
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Zhao L, Yang F, Milano S, Han T, Walliser EO, Schöne BR. Transgenerational acclimation to seawater acidification in the Manila clam Ruditapes philippinarum: Preferential uptake of metabolic carbon. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 627:95-103. [PMID: 29426219 DOI: 10.1016/j.scitotenv.2018.01.225] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Liqiang Zhao
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
| | - Feng Yang
- Engineering Research Center of Shellfish Culture and Breeding in Liaoning Province, Dalian Ocean University, Dalian 116023, China
| | - Stefania Milano
- Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig 04103, Germany
| | - Tiankun Han
- Engineering Research Center of Shellfish Culture and Breeding in Liaoning Province, 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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12
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Stapp LS, Parker LM, O'Connor WA, Bock C, Ross PM, Pörtner HO, Lannig G. Sensitivity to ocean acidification differs between populations of the Sydney rock oyster: Role of filtration and ion-regulatory capacities. MARINE ENVIRONMENTAL RESEARCH 2018; 135:103-113. [PMID: 29428529 DOI: 10.1016/j.marenvres.2017.12.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/13/2017] [Accepted: 12/17/2017] [Indexed: 06/08/2023]
Abstract
Understanding mechanisms of intraspecific variation in resilience to environmental drivers is key to predict species' adaptive potential. Recent studies show a higher CO2 resilience of Sydney rock oysters selectively bred for increased growth and disease resistance ('selected oysters') compared to the wild population. We tested whether the higher resilience of selected oysters correlates with an increased ability to compensate for CO2-induced acid-base disturbances. After 7 weeks of exposure to elevated seawater PCO2 (1100 μatm), wild oysters had a lower extracellular pH (pHe = 7.54 ± 0.02 (control) vs. 7.40 ± 0.03 (elevated PCO2)) and increased hemolymph PCO2 whereas extracellular acid-base status of selected oysters remained unaffected. However, differing pHe values between oyster types were not linked to altered metabolic costs of major ion regulators (Na+/K+-ATPase, H+-ATPase and Na+/H+-exchanger) in gill and mantle tissues. Our findings suggest that selected oysters possess an increased systemic capacity to eliminate metabolic CO2, possibly through higher and energetically more efficient filtration rates and associated gas exchange. Thus, effective filtration and CO2 resilience might be positively correlated traits in oysters.
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Affiliation(s)
- Laura S Stapp
- Integrative Ecophysiology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany; University of Bremen, NW2, Leobener Strasse, 28359 Bremen, Germany.
| | - Laura M Parker
- School of Biological Sciences, University of Sydney, Sydney, NSW 2006, Australia
| | - Wayne A O'Connor
- NSW Department of Primary Industries, Port Stephens Fisheries Centre, Taylors Beach, New South Wales 2316, Australia
| | - Christian Bock
- Integrative Ecophysiology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Pauline M Ross
- School of Biological Sciences, University of Sydney, Sydney, NSW 2006, Australia
| | - Hans O Pörtner
- Integrative Ecophysiology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany; University of Bremen, NW2, Leobener Strasse, 28359 Bremen, Germany
| | - G Lannig
- Integrative Ecophysiology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
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13
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Shi W, Han Y, Guo C, Zhao X, Liu S, Su W, Wang Y, Zha S, Chai X, Liu G. Ocean acidification hampers sperm-egg collisions, gamete fusion, and generation of Ca 2+ oscillations of a broadcast spawning bivalve, Tegillarca granosa. MARINE ENVIRONMENTAL RESEARCH 2017; 130:106-112. [PMID: 28750793 DOI: 10.1016/j.marenvres.2017.07.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/15/2017] [Accepted: 07/18/2017] [Indexed: 06/07/2023]
Abstract
Although the effect of ocean acidification on fertilization success of marine organisms is increasingly well documented, the underlying mechanisms are not completely understood. The fertilization success of broadcast spawning invertebrates depends on successful sperm-egg collisions, gamete fusion, and standard generation of Ca2+ oscillations. Therefore, the realistic effects of future ocean pCO2 levels on these specific aspects of fertilization of Tegillarca granosa were investigated in the present study through sperm velocity trials, fertilization kinetics model analysis, and intracellular Ca2+ assays, respectively. Results obtained indicated that ocean acidification significantly reduced the fertilization success of T. granosa, which could be accountable by (i) decreased sperm velocity hence reducing the probability for sperm-egg collisions; (ii) lowered probability of gamete fusion for each gamete collision event; and (iii) disrupted intracellular Ca2+ oscillations.
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Affiliation(s)
- Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Cheng Guo
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Xinguo Zhao
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Saixi Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Wenhao Su
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yichen Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Shanjie Zha
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Xueliang Chai
- Zhejiang Mariculture Research Institute, Wenzhou, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China.
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14
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Li S, Liu C, Zhan A, Xie L, Zhang R. Influencing Mechanism of Ocean Acidification on Byssus Performance in the Pearl Oyster Pinctada fucata. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:7696-7706. [PMID: 28605591 DOI: 10.1021/acs.est.7b02132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The byssus is an important adhesive structure by which bivalves robustly adhere to underwater substrates. It is susceptible to carbon dioxide-driven ocean acidification (OA). Previous investigations have documented significant adverse effects of OA on the performance of byssal threads, but the mechanisms remain largely unknown. In this study, multiple approaches were employed to reveal the underlying mechanisms for the effects of OA on byssus production and mechanical properties in the pearl oyster Pinctada fucata. The results showed that OA altered the abundance and secondary structure of byssal proteins and affected the contents of metal ions in distal threads, which together reduced the byssus diameter and amplified byssus nanocavity, causing reductions in mechanical properties (strength and extensibility). Expression analysis of key foot protein genes further confirmed changes in byssal protein abundance. Moreover, comparative transcriptome analysis revealed enrichment of ion transportation- and apoptosis-related categories, up-regulation of apoptosis-related pathways, and down-regulation of the "extracellular matrix-receptor interaction" pathway, which may influence foot locomotion physiology, leading to a decrease in byssus production. This study provides mechanistic insight into the effects of OA on pearl oyster byssus, which should broaden our overall understanding of the impacts of OA on marine ecosystem.
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Affiliation(s)
- Shiguo Li
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University , Beijing 100084, China
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
| | - Chuang Liu
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University , Beijing 100084, China
- Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University , Beijing 100084, China
| | - Aibin Zhan
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
| | - Liping Xie
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University , Beijing 100084, China
| | - Rongqing Zhang
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University , Beijing 100084, China
- Department of Biotechnology and Biomedicine, Yangtze Delta Region Institute of Tsinghua University , Jiaxing 314006, China
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15
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Su W, Zha S, Wang Y, Shi W, Xiao G, Chai X, Wu H, Liu G. Benzo[a]pyrene exposure under future ocean acidification scenarios weakens the immune responses of blood clam, Tegillarca granosa. FISH & SHELLFISH IMMUNOLOGY 2017; 63:465-470. [PMID: 28254499 DOI: 10.1016/j.fsi.2017.02.046] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 02/23/2017] [Accepted: 02/25/2017] [Indexed: 06/06/2023]
Abstract
Persistent organic pollutants (POPs) are known to converge into the ocean and accumulate in the sediment, posing great threats to marine organisms such as the sessile bottom burrowing bivalves. However, the immune toxicity of POPs, such as B[a]P, under future ocean acidification scenarios remains poorly understood to date. Therefore, in the present study, the impacts of B[a]P exposure on the immune responses of a bivalve species, Tegillarca granosa, under present and future ocean acidification scenarios were investigated. Results obtained revealed an increased immune toxicity of B[a]P under future ocean acidification scenarios in terms of reduced THC, altered haemocyte composition, and hampered phagocytosis, which may attribute to the synergetic effects of B[a]P and ocean acidification. In addition, the gene expressions of pathogen pattern recognition receptors (TLR1, TLR2, TLR4, TLR6), pathway mediators (TRAF6, TAK1, TAB2, IKKα and Myd88), and effectors (NF-ĸB) of the important immune related pathways were significantly down-regulated upon exposure to B[a]P under future ocean acidification scenarios. Results of the present study suggested an increased immune toxicity of B[a]P under future ocean acidification scenarios, which will significantly hamper the immune responses of T. granosa and subsequently render individuals more susceptible to pathogens challenges.
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Affiliation(s)
- Wenhao Su
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Shanjie Zha
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yichen Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Guoqiang Xiao
- Zhejiang Mariculture Research Institute, Wenzhou, PR China
| | - Xueliang Chai
- Zhejiang Mariculture Research Institute, Wenzhou, PR China
| | - Hongxi Wu
- Zhejiang Fisheries Technology Extension Station, Hangzhou, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China.
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16
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Zhao X, Shi W, Han Y, Liu S, Guo C, Fu W, Chai X, Liu G. Ocean acidification adversely influences metabolism, extracellular pH and calcification of an economically important marine bivalve, Tegillarca granosa. MARINE ENVIRONMENTAL RESEARCH 2017; 125:82-89. [PMID: 28188988 DOI: 10.1016/j.marenvres.2017.01.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/24/2017] [Accepted: 01/30/2017] [Indexed: 06/06/2023]
Abstract
Oceanic uptake of CO2 from the atmosphere has significantly reduced surface seawater pH and altered the carbonate chemistry within, leading to global Ocean Acidification (OA). The blood clam, Tegillarca granosa, is an economically and ecologically significant marine bivalve that is widely distributed along the coastal and estuarine areas of Asia. To investigate the physiological responses to OA, blood clams were exposed to ambient and three reduced seawater pH levels (8.1, 7.8, 7.6 and 7.4) for 40 days, respectively. Results obtained suggest that OA suppresses the feeding activity and aerobic metabolism, but elevates proteins catabolism of blood clams. OA also causes extracellular acidosis and decreases haemolymph Ca2+ concentration. In addition, our data also suggest that OA impairs the calcification process and inner shell surface integrity. Overall, OA adversely influences metabolism, acid-base status and calcification of blood clams, subsequently leading to a decrease in the fitness of this marine bivalve species.
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Affiliation(s)
- Xinguo Zhao
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Saixi Liu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Cheng Guo
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Wandong Fu
- Zhejiang Marine Development Research Institute, Zhoushan 316021, PR China
| | - Xueliang Chai
- Zhejiang Mariculture Research Institute, Wenzhou 325000, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, PR China.
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17
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Scanes E, Parker LM, O'Connor WA, Stapp LS, Ross PM. Intertidal oysters reach their physiological limit in a future high-CO2 world. J Exp Biol 2017; 220:765-774. [DOI: 10.1242/jeb.151365] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 12/05/2016] [Indexed: 01/09/2023]
Abstract
ABSTRACT
Sessile marine molluscs living in the intertidal zone experience periods of internal acidosis when exposed to air (emersion) during low tide. Relative to other marine organisms, molluscs have been identified as vulnerable to future ocean acidification; however, paradoxically it has also been shown that molluscs exposed to high CO2 environments are more resilient compared with those molluscs naive to CO2 exposure. Two competing hypotheses were tested using a novel experimental design incorporating tidal simulations to predict the future intertidal limit of oysters in a high-CO2 world; either high-shore oysters will be more tolerant of elevated PCO2 because of their regular acidosis, or elevated PCO2 will cause high-shore oysters to reach their limit. Sydney rock oysters, Saccostrea glomerata, were collected from the high-intertidal and subtidal areas of the shore and exposed in an orthogonal design to either an intertidal or a subtidal treatment at ambient or elevated PCO2, and physiological variables were measured. The combined treatment of tidal emersion and elevated PCO2 interacted synergistically to reduce the haemolymph pH (pHe) of oysters, and increase the PCO2 in the haemolymph (Pe,CO2) and standard metabolic rate. Oysters in the intertidal treatment also had lower condition and growth. Oysters showed a high degree of plasticity, and little evidence was found that intertidal oysters were more resilient than subtidal oysters. It is concluded that in a high-CO2 world the upper vertical limit of oyster distribution on the shore may be reduced. These results suggest that previous studies on intertidal organisms that lacked tidal simulations may have underestimated the effects of elevated PCO2.
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Affiliation(s)
- Elliot Scanes
- School of Science and Health, Western Sydney University, Penrith, NSW 2750, Australia
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Laura M. Parker
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Wayne A. O'Connor
- Department of Primary Industries, Port Stephens Fisheries Research Institute, Taylors Beach Road, Taylors Beach, NSW 2316, Australia
| | - Laura S. Stapp
- Integrative Ecophysiology, Alfred Wegener Institute Helmholtz Institute for Polar and Marine Research, Am Handelshafen 12, Bremerhaven D-27570, Germany
| | - Pauline M. Ross
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW 2006, Australia
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18
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Munari M, Chemello G, Finos L, Ingrosso G, Giani M, Marin MG. Coping with seawater acidification and the emerging contaminant diclofenac at the larval stage: A tale from the clam Ruditapes philippinarum. CHEMOSPHERE 2016; 160:293-302. [PMID: 27391052 DOI: 10.1016/j.chemosphere.2016.06.095] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 06/10/2016] [Accepted: 06/25/2016] [Indexed: 06/06/2023]
Abstract
Seawater acidification could alter the susceptibility of marine organisms to emerging contaminants, such as pharmaceuticals. In this study, the combined effects of seawater acidification and the non-steroidal anti-inflammatory drug diclofenac on survival, growth and oxidative stress-related parameters (catalase activity and lipid peroxidation) in the larvae of the Manila clam Ruditapes philippinarum were investigated for the first time. An experimental flow-through system was set up to carry out a 96-h exposure of clam larvae. Two pH levels (pH 8.0, the control, and pH 7.8, the predicted pH by the end of this century) were tested with and without diclofenac (0.5 μg/L). After 4 days, mortality was dramatically higher under reduced pH, particularly in the presence of diclofenac (62% of the larvae dead). Shell morphology was negatively affected by both acidification and diclofenac from the first day of exposure. The percentage of abnormal larvae was always higher at pH 7.8 than in controls, peaking at 98% in the presence of diclofenac after 96 h. Instead, shell length, shell height or the ratio of these values were only negatively influenced by reduced pH throughout the whole experiment. After 96 h, catalase activity was significantly increased in all larvae kept at pH 7.8, whereas no significant difference in lipid peroxidation was found among the treatments. This study demonstrates a high susceptibility of R. philippinarum larvae to a slight reduction in seawater pH. Furthermore, the results obtained highlight that acidification enhances the sensitivity of clam larvae to environmentally relevant concentrations of diclofenac.
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Affiliation(s)
- Marco Munari
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy.
| | - Giulia Chemello
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
| | - Livio Finos
- Department of Developmental Psychology and Socialisation, University of Padova, Via Venezia, 8, 35131 Padova, Italy
| | - Gianmarco Ingrosso
- Istituto Nazionale di Oceanografia e Geofisica Sperimentale, Sezione di Oceanografia, Via A. Piccard 54, 34151 S. Croce (TS), Italy
| | - Michele Giani
- Istituto Nazionale di Oceanografia e Geofisica Sperimentale, Sezione di Oceanografia, Via A. Piccard 54, 34151 S. Croce (TS), Italy
| | - Maria G Marin
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
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19
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Orensanz J(L, Parma AM, Smith SJ. Dynamics, Assessment, and Management of Exploited Natural Scallop Populations. SCALLOPS - BIOLOGY, ECOLOGY, AQUACULTURE, AND FISHERIES 2016. [DOI: 10.1016/b978-0-444-62710-0.00014-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Waldbusser GG, Hales B, Langdon CJ, Haley BA, Schrader P, Brunner EL, Gray MW, Miller CA, Gimenez I, Hutchinson G. Ocean Acidification Has Multiple Modes of Action on Bivalve Larvae. PLoS One 2015; 10:e0128376. [PMID: 26061095 DOI: 10.1038/nclimate2479] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 04/25/2015] [Indexed: 05/27/2023] Open
Abstract
Ocean acidification (OA) is altering the chemistry of the world's oceans at rates unparalleled in the past roughly 1 million years. Understanding the impacts of this rapid change in baseline carbonate chemistry on marine organisms needs a precise, mechanistic understanding of physiological responses to carbonate chemistry. Recent experimental work has shown shell development and growth in some bivalve larvae, have direct sensitivities to calcium carbonate saturation state that is not modulated through organismal acid-base chemistry. To understand different modes of action of OA on bivalve larvae, we experimentally tested how pH, PCO2, and saturation state independently affect shell growth and development, respiration rate, and initiation of feeding in Mytilus californianus embryos and larvae. We found, as documented in other bivalve larvae, that shell development and growth were affected by aragonite saturation state, and not by pH or PCO2. Respiration rate was elevated under very low pH (~7.4) with no change between pH of ~ 8.3 to ~7.8. Initiation of feeding appeared to be most sensitive to PCO2, and possibly minor response to pH under elevated PCO2. Although different components of physiology responded to different carbonate system variables, the inability to normally develop a shell due to lower saturation state precludes pH or PCO2 effects later in the life history. However, saturation state effects during early shell development will carry-over to later stages, where pH or PCO2 effects can compound OA effects on bivalve larvae. Our findings suggest OA may be a multi-stressor unto itself. Shell development and growth of the native mussel, M. californianus, was indistinguishable from the Mediterranean mussel, Mytilus galloprovincialis, collected from the southern U.S. Pacific coast, an area not subjected to seasonal upwelling. The concordance in responses suggests a fundamental OA bottleneck during development of the first shell material affected only by saturation state.
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Affiliation(s)
- George G Waldbusser
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
| | - Burke Hales
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
| | - Chris J Langdon
- Coastal Oregon Marine Experimental Station and Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport OR, United States of America
| | - Brian A Haley
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
| | - Paul Schrader
- Coastal Oregon Marine Experimental Station and Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport OR, United States of America
| | - Elizabeth L Brunner
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
| | - Matthew W Gray
- Coastal Oregon Marine Experimental Station and Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport OR, United States of America
| | - Cale A Miller
- Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall, Oregon State University, Corvallis, OR, United States of America
| | - Iria Gimenez
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
| | - Greg Hutchinson
- Coastal Oregon Marine Experimental Station and Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport OR, United States of America
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21
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Waldbusser GG, Hales B, Langdon CJ, Haley BA, Schrader P, Brunner EL, Gray MW, Miller CA, Gimenez I, Hutchinson G. Ocean Acidification Has Multiple Modes of Action on Bivalve Larvae. PLoS One 2015; 10:e0128376. [PMID: 26061095 PMCID: PMC4465621 DOI: 10.1371/journal.pone.0128376] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 04/25/2015] [Indexed: 11/19/2022] Open
Abstract
Ocean acidification (OA) is altering the chemistry of the world’s oceans at rates unparalleled in the past roughly 1 million years. Understanding the impacts of this rapid change in baseline carbonate chemistry on marine organisms needs a precise, mechanistic understanding of physiological responses to carbonate chemistry. Recent experimental work has shown shell development and growth in some bivalve larvae, have direct sensitivities to calcium carbonate saturation state that is not modulated through organismal acid-base chemistry. To understand different modes of action of OA on bivalve larvae, we experimentally tested how pH, PCO2, and saturation state independently affect shell growth and development, respiration rate, and initiation of feeding in Mytilus californianus embryos and larvae. We found, as documented in other bivalve larvae, that shell development and growth were affected by aragonite saturation state, and not by pH or PCO2. Respiration rate was elevated under very low pH (~7.4) with no change between pH of ~ 8.3 to ~7.8. Initiation of feeding appeared to be most sensitive to PCO2, and possibly minor response to pH under elevated PCO2. Although different components of physiology responded to different carbonate system variables, the inability to normally develop a shell due to lower saturation state precludes pH or PCO2 effects later in the life history. However, saturation state effects during early shell development will carry-over to later stages, where pH or PCO2 effects can compound OA effects on bivalve larvae. Our findings suggest OA may be a multi-stressor unto itself. Shell development and growth of the native mussel, M. californianus, was indistinguishable from the Mediterranean mussel, Mytilus galloprovincialis, collected from the southern U.S. Pacific coast, an area not subjected to seasonal upwelling. The concordance in responses suggests a fundamental OA bottleneck during development of the first shell material affected only by saturation state.
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Affiliation(s)
- George G. Waldbusser
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
- * E-mail:
| | - Burke Hales
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
| | - Chris J. Langdon
- Coastal Oregon Marine Experimental Station and Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport OR, United States of America
| | - Brian A. Haley
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
| | - Paul Schrader
- Coastal Oregon Marine Experimental Station and Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport OR, United States of America
| | - Elizabeth L. Brunner
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
| | - Matthew W. Gray
- Coastal Oregon Marine Experimental Station and Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport OR, United States of America
| | - Cale A. Miller
- Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall, Oregon State University, Corvallis, OR, United States of America
| | - Iria Gimenez
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States of America
| | - Greg Hutchinson
- Coastal Oregon Marine Experimental Station and Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport OR, United States of America
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22
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Hardy NA, Byrne M. Early development of congeneric sea urchins (Heliocidaris) with contrasting life history modes in a warming and high CO2 ocean. MARINE ENVIRONMENTAL RESEARCH 2014; 102:78-87. [PMID: 25115741 DOI: 10.1016/j.marenvres.2014.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 07/09/2014] [Accepted: 07/10/2014] [Indexed: 06/03/2023]
Abstract
The impacts of ocean change stressors - warming and acidification - on marine invertebrate development have emerged as a significant impact of global change. We investigated the response of early development to the larval stage in sympatric, congeneric sea urchins, Heliocidaris tuberculata and Heliocidaris erythrogramma with contrasting modes of development to ocean warming and acidification. Effects of these stressors were assessed by quantifying the percentage of normal development during the first 24 h post fertilization, in cross-factorial experiments that included three temperature treatments (control: 20 °C; +4: 24 °C; +6: 26 °C) and four pHNIST levels (control: 8.2; -0.4: 7.8; -0.6: 7.6; -0.8: 0.4). The experimental treatments were designed in context with present day and near-future (∼2100) conditions for the southeast Australia global warming hotspot. Temperature was the most important factor affecting development of both species causing faster progression through developmental stages as well as a decrease in the percentage of normal development. H. erythrogramma embryos were less tolerant of increased temperature than those of H. tuberculata. Acidification impaired development to the larval stage in H. tuberculata, but this was not the case for H. erythrogramma. Thus, outcomes for the planktonic life phase of the two Heliocidaris species in response to ocean warming and acidification will differ. As shown for these species, single-stressor temperature or acidification studies can be misleading with respect to determining species' vulnerability and responses to global change.
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Affiliation(s)
- Natasha A Hardy
- School of Medical Sciences, University of Sydney, NSW 2006, Australia.
| | - Maria Byrne
- School of Medical Sciences, University of Sydney, NSW 2006, Australia; School of Biological Sciences, University of Sydney, NSW 2006, Australia
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