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Modelling Antifouling compounds of Macroalgal Holobionts in Current and Future pH Conditions. J Chem Ecol 2022; 48:455-473. [DOI: 10.1007/s10886-021-01340-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 11/29/2021] [Accepted: 12/10/2021] [Indexed: 10/19/2022]
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Anand M, Rangesh K, Maruthupandy M, Jayanthi G, Rajeswari B, Priya RJ. Effect of CO 2 driven ocean acidification on calcification, physiology and ovarian cells of tropical sea urchin Salmacis virgulata - A microcosm approach. Heliyon 2021; 7:e05970. [PMID: 33521355 PMCID: PMC7820546 DOI: 10.1016/j.heliyon.2021.e05970] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/06/2021] [Accepted: 01/08/2021] [Indexed: 12/20/2022] Open
Abstract
In the present study, we depict the structural modification of test minerals, physiological response and ovarian damage in the tropical sea urchin Salmacis virgulata using microcosm CO2 (Carbon dioxide) perturbation experiment. S. virgulata were exposed to hypercapnic conditions with four different pH levels using CO2 gas bubbling method that reflects ambient level (pH 8.2) and elevated pCO2 scenarios (pH 8.0, 7.8 and 7.6). The variations in physical strength and mechanical properties of S. virgulata test were evaluated by thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray diffraction analysis and scanned electron microscopy analysis. Biomarker enzymes such as glutathione-S-transferase, catalase, acetylcholine esterase, lipid peroxidase and reduced glutathione showed physiological stress and highly significant (p < 0.01) towards pH 7.6 and 7.8 treatments. Ovarian cells were highly damaged at pH 7.6 and 7.8 treatments. This study proved that the pH level 7.6 and 7.8 drastically affect calcification, physiological response and ovarian cells in S. virgulata.
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Affiliation(s)
- Muthusamy Anand
- Department of Marine and Coastal Studies, School of Energy, Environment and Natural Resources, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India
| | - Kannan Rangesh
- Department of Marine and Coastal Studies, School of Energy, Environment and Natural Resources, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India
| | - Muthuchamy Maruthupandy
- Department of Marine and Coastal Studies, School of Energy, Environment and Natural Resources, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India.,Department of Chemical Engineering, Faculty of Physical Science and Mathematics, University of Chile, Santiago, Chile
| | - Govindarajulu Jayanthi
- Department of Marine and Coastal Studies, School of Energy, Environment and Natural Resources, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India
| | - Balakrishnan Rajeswari
- Department of Marine and Coastal Studies, School of Energy, Environment and Natural Resources, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India
| | - Radhakrishnan Jeeva Priya
- Department of Marine and Coastal Studies, School of Energy, Environment and Natural Resources, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India
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Hypercapnia-induced disruption of long-distance mate-detection and reduction of energy expenditure in a coastal keystone crustacean. Physiol Behav 2018; 195:69-75. [DOI: 10.1016/j.physbeh.2018.07.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/18/2018] [Accepted: 07/25/2018] [Indexed: 01/31/2023]
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Schleicherová D, Dulias K, Osigus HJ, Paknia O, Hadrys H, Schierwater B. The most primitive metazoan animals, the placozoans, show high sensitivity to increasing ocean temperatures and acidities. Ecol Evol 2017; 7:895-904. [PMID: 28168026 PMCID: PMC5288258 DOI: 10.1002/ece3.2678] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 11/09/2016] [Accepted: 11/13/2016] [Indexed: 01/14/2023] Open
Abstract
The increase in atmospheric carbon dioxide (CO2) leads to rising temperatures and acidification in the oceans, which directly or indirectly affects all marine organisms, from bacteria to animals. We here ask whether the simplest-and possibly also the oldest-metazoan animals, the placozoans, are particularly sensitive to ocean warming and acidification. Placozoans are found in all warm and temperate oceans and are soft-bodied, microscopic invertebrates lacking any calcified structures, organs, or symmetry. We here show that placozoans respond highly sensitive to temperature and acidity stress. The data reveal differential responses in different placozoan lineages and encourage efforts to develop placozoans as a potential biomarker system.
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Affiliation(s)
| | - Katharina Dulias
- ITZ, Ecology and EvolutionTiHo Hannover Hannover Germany; Present address: Department of Biological Sciences School of Applied Sciences University of Huddersfield Huddersfield UK
| | | | - Omid Paknia
- ITZ, Ecology and Evolution TiHo Hannover Hannover Germany
| | - Heike Hadrys
- ITZ, Ecology and Evolution TiHo Hannover Hannover Germany
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Roggatz CC, Lorch M, Hardege JD, Benoit DM. Ocean acidification affects marine chemical communication by changing structure and function of peptide signalling molecules. GLOBAL CHANGE BIOLOGY 2016; 22:3914-3926. [PMID: 27353732 DOI: 10.1111/gcb.13354] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 04/29/2016] [Accepted: 05/02/2016] [Indexed: 05/24/2023]
Abstract
Ocean acidification is a global challenge that faces marine organisms in the near future with a predicted rapid drop in pH of up to 0.4 units by the end of this century. Effects of the change in ocean carbon chemistry and pH on the development, growth and fitness of marine animals are well documented. Recent evidence also suggests that a range of chemically mediated behaviours and interactions in marine fish and invertebrates will be affected. Marine animals use chemical cues, for example, to detect predators, for settlement, homing and reproduction. But, while effects of high CO2 conditions on these behaviours are described across many species, little is known about the underlying mechanisms, particularly in invertebrates. Here, we investigate the direct influence of future oceanic pH conditions on the structure and function of three peptide signalling molecules with an interdisciplinary combination of methods. NMR spectroscopy and quantum chemical calculations were used to assess the direct molecular influence of pH on the peptide cues, and we tested the functionality of the cues in different pH conditions using behavioural bioassays with shore crabs (Carcinus maenas) as a model system. We found that peptide signalling cues are susceptible to protonation in future pH conditions, which will alter their overall charge. We also show that structure and electrostatic properties important for receptor binding differ significantly between the peptide forms present today and the protonated signalling peptides likely to be dominating in future oceans. The bioassays suggest an impaired functionality of the signalling peptides at low pH. Physiological changes due to high CO2 conditions were found to play a less significant role in influencing the investigated behaviour. From our results, we conclude that the change of charge, structure and consequently function of signalling molecules presents one possible mechanism to explain altered behaviour under future oceanic pH conditions.
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Affiliation(s)
- Christina C Roggatz
- Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK
| | - Mark Lorch
- Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK
| | - Jörg D Hardege
- School of Biological, Biomedical and Environmental Sciences, University of Hull, Cottingham Road, Hull, HU6 7RX, UK
| | - David M Benoit
- Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK
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Somero GN, Beers JM, Chan F, Hill TM, Klinger T, Litvin SY. What Changes in the Carbonate System, Oxygen, and Temperature Portend for the Northeastern Pacific Ocean: A Physiological Perspective. Bioscience 2015. [DOI: 10.1093/biosci/biv162] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Affiliation(s)
| | - Jörg D. Hardege
- School of Biological, Biomedical, Environmental Sciences, University of Hull, Hull, HU6 7RX, UK
| | - John Terschak
- School of Biological, Biomedical, Environmental Sciences, University of Hull, Hull, HU6 7RX, UK
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Murray F, Widdicombe S, McNeill CL, Solan M. Consequences of a simulated rapid ocean acidification event for benthic ecosystem processes and functions. MARINE POLLUTION BULLETIN 2013; 73:435-442. [PMID: 23219529 DOI: 10.1016/j.marpolbul.2012.11.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 09/14/2012] [Accepted: 11/10/2012] [Indexed: 06/01/2023]
Abstract
Whilst the biological consequences of long-term, gradual changes in acidity associated with the oceanic uptake of atmospheric carbon dioxide (CO2) are increasingly studied, the potential effects of rapid acidification associated with a failure of sub-seabed carbon storage infrastructure have received less attention. This study investigates the effects of severe short-term (8days) exposure to acidified seawater on infaunal mediation of ecosystem processes (bioirrigation and sediment particle redistribution) and functioning (nutrient concentrations). Following acidification, individuals of Amphiura filiformis exhibited emergent behaviour typical of a stress response, which resulted in altered bioturbation, but limited changes in nutrient cycling. Under acidified conditions, A. filiformis moved to shallower depths within the sediment and the variability in occupancy depth reduced considerably. This study indicated that rapid acidification events may not be lethal to benthic invertebrates, but may result in behavioural changes that could have longer-term implications for species survival, ecosystem structure and functioning.
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Affiliation(s)
- Fiona Murray
- Oceanlab, University of Aberdeen, Main Street, Newburgh, Aberdeenshire AB41 6AA, UK.
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Hayashi M, Kikkawa T, Ishimatsu A. Morphological changes in branchial mitochondria-rich cells of the teleost Paralichthys olivaceus as a potential indicator of CO2 impacts. MARINE POLLUTION BULLETIN 2013; 73:409-415. [PMID: 23838416 DOI: 10.1016/j.marpolbul.2013.06.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Revised: 12/30/2012] [Accepted: 06/17/2013] [Indexed: 06/02/2023]
Abstract
We studied the morphological and biochemical changes of mitochondria-rich cells (MRCs) of a demersal teleost, Paralichthys olivaceus, during exposure to 0.98, 2.97 and 4.95kPa pCO2. The apical opening area of MRCs increased 2.2 and 4.1 times by 24h exposure to 2.97 and 4.95kPa pCO2, respectively, while the cross-sectional area or density of MRCs did not change. Gill Na(+)/K(+)-ATPase activity more than doubled at 72h and then returned to the pre-exposure level at 168h in 0.98kPa pCO2, while it increased 1.7 times at 24h at 4.95kPa. These results indicate that the apical opening area of MRCs and the gill Na(+)/K(+)-ATPase activity may be used as an indicator of acute (up to 72h), but not chronic, impacts of high (>1kPa) seawater CO2 conditions in P. olivacues. Limitations of those parameters as indices of CO2 impacts are discussed.
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Affiliation(s)
- Masahiro Hayashi
- Institute for East China Sea Research, Nagasaki University, 1551-7 Tairamachi, Nagasaki 851-2213, Japan
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Hakonen A, Anderson LG, Engelbrektsson J, Hulth S, Karlson B. A potential tool for high-resolution monitoring of ocean acidification. Anal Chim Acta 2013; 786:1-7. [DOI: 10.1016/j.aca.2013.04.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 04/08/2013] [Accepted: 04/11/2013] [Indexed: 10/26/2022]
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