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Ocampo EH, Nuñez JD, Ribeiro PD, Pérez García M, Bas CC, Luppi TA. Disparate response of decapods to low pH: A meta-analysis of life history, physiology and behavior traits across life stages and environments. MARINE POLLUTION BULLETIN 2024; 202:116293. [PMID: 38537497 DOI: 10.1016/j.marpolbul.2024.116293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 03/21/2024] [Accepted: 03/21/2024] [Indexed: 05/08/2024]
Abstract
We employed a meta-analysis to determine if the presumed resilience of decapods to ocean acidification extends to all biological aspects, environments, and life stages. Most response categories appeared unaffected by acidification. However, certain fitness-related traits (growth, survival, and, to some extent, calcification) were impacted. Acid-base balance and stress response scaled positively with reductions in pH, which maintains homeostasis, possibly at the cost of other processes. Juveniles were the only stage impacted by acidification, which is believed to reduce recruitment. We observed few differences in responses to acidification among decapods inhabiting contrasting environments. Our meta-analysis shows decapods as a group slightly to moderately sensitive to low pH, with impacts on some biological aspects rather than on all specific life stages or habitats. Although extreme pH scenarios may not occur in the open ocean, coastal and estuarine areas might experience lower pH levels in the near to medium future, posing potential challenges for decapods.
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Affiliation(s)
- Emiliano H Ocampo
- Instituto de Investigaciones Marinas y Costeras (IIMYC), FCEyN, Universidad Nacional de Mar del Plata, Provincia de Buenos Aires, Argentina, Funes 3350 (4 level) Zoology-Invertebrates Laboratory, Mar del Plata 7600, Argentina
| | - Jesus D Nuñez
- Instituto de Investigaciones Marinas y Costeras (IIMYC), FCEyN, Universidad Nacional de Mar del Plata, Provincia de Buenos Aires, Argentina, Funes 3350 (4 level) Zoology-Invertebrates Laboratory, Mar del Plata 7600, Argentina
| | - Pablo D Ribeiro
- Instituto de Investigaciones Marinas y Costeras (IIMYC), FCEyN, Universidad Nacional de Mar del Plata, Provincia de Buenos Aires, Argentina, Funes 3350 (4 level) Zoology-Invertebrates Laboratory, Mar del Plata 7600, Argentina
| | - Macarena Pérez García
- Instituto de Investigaciones Marinas y Costeras (IIMYC), FCEyN, Universidad Nacional de Mar del Plata, Provincia de Buenos Aires, Argentina, Funes 3350 (4 level) Zoology-Invertebrates Laboratory, Mar del Plata 7600, Argentina.
| | - Claudia C Bas
- Instituto de Investigaciones Marinas y Costeras (IIMYC), FCEyN, Universidad Nacional de Mar del Plata, Provincia de Buenos Aires, Argentina, Funes 3350 (4 level) Zoology-Invertebrates Laboratory, Mar del Plata 7600, Argentina
| | - Tomas A Luppi
- Instituto de Investigaciones Marinas y Costeras (IIMYC), FCEyN, Universidad Nacional de Mar del Plata, Provincia de Buenos Aires, Argentina, Funes 3350 (4 level) Zoology-Invertebrates Laboratory, Mar del Plata 7600, Argentina
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Long WC, Swiney KM, Foy RJ. Direct, carryover, and maternal effects of ocean acidification on snow crab embryos and larvae. PLoS One 2023; 18:e0276360. [PMID: 37851644 PMCID: PMC10584120 DOI: 10.1371/journal.pone.0276360] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 09/19/2023] [Indexed: 10/20/2023] Open
Abstract
Ocean acidification, a decrease in ocean pH with increasing anthropogenic CO2 concentrations, is expected to affect many marine animals. To examine the effects of decreased pH on snow crab (Chionoecetes opilio), a commercial species in Alaska, we reared ovigerous females in one of three treatments: Ambient pH (~8.1), pH 7.8, and pH 7.5, through two annual reproductive cycles. Morphometric changes during development and hatching success were measured for embryos both years and calcification was measured for the adult females at the end of the 2-year experiment. Embryos and larvae analyzed in year one were from oocytes developed, fertilized, and extruded in situ, whereas embryos and larvae in year two were from oocytes developed, fertilized, and extruded under acidified conditions in the laboratory. In both years, larvae were exposed to the same pH treatments in a fully crossed experimental design. Starvation-survival, morphology, condition, and calcium/magnesium content were assessed for larvae. Embryo morphology during development, hatching success, and fecundity were unaffected by pH during both years. Percent calcium in adult females' carapaces did not differ among treatments at the end of the experiment. In the first year, starvation-survival of larvae reared at Ambient pH but hatched from embryos reared at reduced pH was lowered; however, the negative effect was eliminated when the larvae were reared at reduced pH. In the second year, there was no direct effect of either embryo or larval pH treatment, but larvae reared as embryos at reduced pH survived longer if reared at reduced pH. Treatment either did not affect other measured larval parameters, or effect sizes were small. The results from this two-year study suggest that snow crabs are well adapted to projected ocean pH levels within the next two centuries, although other life-history stages still need to be examined for sensitivity and potential interactive effects with increasing temperatures should be investigated.
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Affiliation(s)
- William Christopher Long
- Kodiak Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Kodiak, AK, United States of America
| | - Katherine M. Swiney
- Kodiak Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Kodiak, AK, United States of America
| | - Robert J. Foy
- Kodiak Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Kodiak, AK, United States of America
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Ocean acidification causes fundamental changes in the cellular metabolism of the Arctic copepod Calanus glacialis as detected by metabolomic analysis. Sci Rep 2022; 12:22223. [PMID: 36564436 PMCID: PMC9789029 DOI: 10.1038/s41598-022-26480-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
Using a targeted metabolomic approach we investigated the effects of low seawater pH on energy metabolism in two late copepodite stages (CIV and CV) of the keystone Arctic copepod species Calanus glacialis. Exposure to decreasing seawater pH (from 8.0 to 7.0) caused increased ATP, ADP and NAD+ and decreased AMP concentrations in stage CIV, and increased ATP and phospho-L-arginine and decreased AMP concentrations in stage CV. Metabolic pathway enrichment analysis showed enrichment of the TCA cycle and a range of amino acid metabolic pathways in both stages. Concentrations of lactate, malate, fumarate and alpha-ketoglutarate (all involved in the TCA cycle) increased in stage CIV, whereas only alpha-ketoglutarate increased in stage CV. Based on the pattern of concentration changes in glucose, pyruvate, TCA cycle metabolites, and free amino acids, we hypothesise that ocean acidification will lead to a shift in energy production from carbohydrate metabolism in the glycolysis toward amino acid metabolism in the TCA cycle and oxidative phosphorylation in stage CIV. In stage CV, concentrations of most of the analysed free fatty acids increased, suggesting in particular that ocean acidification increases the metabolism of stored wax esters in this stage. Moreover, aminoacyl-tRNA biosynthesis was enriched in both stages indicating increased enzyme production to handle low pH stress.
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Leiva L, Tremblay N, Torres G, Boersma M, Krone R, Giménez L. European Lobster Larval Development and Fitness Under a Temperature Gradient and Ocean Acidification. Front Physiol 2022; 13:809929. [PMID: 35910579 PMCID: PMC9333128 DOI: 10.3389/fphys.2022.809929] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Climate change combined with anthropogenic stressors (e.g. overfishing, habitat destruction) may have particularly strong effects on threatened populations of coastal invertebrates. The collapse of the population of European lobster (Homarus gammarus) around Helgoland constitutes a good example and prompted a large-scale restocking program. The question arises if recruitment of remaining natural individuals and program-released specimens could be stunted by ongoing climate change. We examined the joint effect of ocean warming and acidification on survival, development, morphology, energy metabolism and enzymatic antioxidant activity of the larval stages of the European lobster. Larvae from four independent hatches were reared from stage I to III under a gradient of 10 seawater temperatures (13–24°C) combined with moderate (∼470 µatm) and elevated (∼1160 µatm) seawater pCO2 treatments. Those treatments correspond to the shared socio-economic pathways (SSP), SSP1-2.6 and SSP5-8.5 (i.e. the low and the very high greenhouse gas emissions respectively) projected for 2100 by the Intergovernmental Panel on Climate Change. Larvae under the elevated pCO2 treatment had not only lower survival rates, but also significantly smaller rostrum length. However, temperature was the main driver of energy demands with increased oxygen consumption rates and elemental C:N ratio towards warmer temperatures, with a reducing effect on development time. Using this large temperature gradient, we provide a more precise insight on the aerobic thermal window trade-offs of lobster larvae and whether exposure to the worst hypercapnia scenario may narrow it. This may have repercussions on the recruitment of the remaining natural and program-released specimens and thus, in the enhancement success of future lobster stocks.
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Affiliation(s)
- Laura Leiva
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Biologische Anstalt Helgoland, Helgoland, Germany
- *Correspondence: Laura Leiva,
| | - Nelly Tremblay
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Biologische Anstalt Helgoland, Helgoland, Germany
| | - Gabriela Torres
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Biologische Anstalt Helgoland, Helgoland, Germany
| | - Maarten Boersma
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Biologische Anstalt Helgoland, Helgoland, Germany
- FB2, University of Bremen, Bremen, Germany
| | - Roland Krone
- Reefauna - Spezialisten für Rifftiere, Bremerhaven, Germany
| | - Luis Giménez
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Biologische Anstalt Helgoland, Helgoland, Germany
- School of Ocean Sciences, College of Environmental Sciences and Engineering, Bangor University, Menai Bridge, United Kingdom
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Tai TC, Calosi P, Gurney-Smith HJ, Cheung WWL. Modelling ocean acidification effects with life stage-specific responses alters spatiotemporal patterns of catch and revenues of American lobster, Homarus americanus. Sci Rep 2021; 11:23330. [PMID: 34857790 PMCID: PMC8639722 DOI: 10.1038/s41598-021-02253-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 10/29/2021] [Indexed: 12/02/2022] Open
Abstract
Ocean acidification (OA) affects marine organisms through various physiological and biological processes, yet our understanding of how these translate to large-scale population effects remains limited. Here, we integrated laboratory-based experimental results on the life history and physiological responses to OA of the American lobster, Homarus americanus, into a dynamic bioclimatic envelope model to project future climate change effects on species distribution, abundance, and fisheries catch potential. Ocean acidification effects on juvenile stages had the largest stage-specific impacts on the population, while cumulative effects across life stages significantly exerted the greatest impacts, albeit quite minimal. Reducing fishing pressure leads to overall increases in population abundance while setting minimum size limits also results in more higher-priced market-sized lobsters (> 1 lb), and could help mitigate the negative impacts of OA and concurrent stressors (warming, deoxygenation). However, the magnitude of increased effects of climate change overweighs any moderate population gains made by changes in fishing pressure and size limits, reinforcing that reducing greenhouse gas emissions is most pressing and that climate-adaptive fisheries management is necessary as a secondary role to ensure population resiliency. We suggest possible strategies to mitigate impacts by preserving important population demographics.
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Affiliation(s)
- Travis C. Tai
- grid.17091.3e0000 0001 2288 9830Changing Ocean Research Unit, Institute for the Oceans and Fisheries, The University of British Columbia, 2202 Main Mall, Vancouver, BC V6T 1Z4 Canada
| | - Piero Calosi
- grid.265702.40000 0001 2185 197XDépartment de Biologie, Chimie et Géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC G5L 3A1 Canada
| | - Helen J. Gurney-Smith
- grid.23618.3e0000 0004 0449 2129Fisheries and Oceans Canada, St. Andrews Biological Station, 125 Marine Science Drive, St. Andrews, NB E5B 0E4 Canada
| | - William W. L. Cheung
- grid.17091.3e0000 0001 2288 9830Changing Ocean Research Unit, Institute for the Oceans and Fisheries, The University of British Columbia, 2202 Main Mall, Vancouver, BC V6T 1Z4 Canada
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