1
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Tian H, Liu J, Shan X, Cao L, Jin X, Dou S. The incorporation of strontium and barium into the otoliths of the flounder Paralichthys olivaceus at early life stages demonstrates resilience to ocean acidification. JOURNAL OF FISH BIOLOGY 2024; 105:141-152. [PMID: 38653715 DOI: 10.1111/jfb.15766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 03/16/2024] [Accepted: 04/05/2024] [Indexed: 04/25/2024]
Abstract
Ocean acidification could modify the bioavailability and chemical properties of trace elements in seawater, which could affect their incorporation into the calcareous structures of marine organisms. Fish otoliths, biomineralized ear stones made by aragonite, are suspended within the endolymph fluid of teleosts, indicating that the elemental incorporation of otoliths might also be susceptible to ocean acidification. In this study, we evaluated the combined effects of CO2-induced ocean acidification (pH 8.10, 7.70, and 7.30, corresponding to ocean acidification scenarios under the representative concentration pathway 8.5 model as projected by the Intergovernmental Panel on Climate Change) and water elemental concentrations of strontium (Sr) and barium (Ba; low, medium, and high) on elemental incorporation into otoliths of the flounder Paralichthys olivaceus at early life stages. Our results revealed that the elemental incorporation of Sr and Ba into otoliths was principally dependent on the corresponding water elemental concentrations rather than on ocean acidification. Moreover, the partition coefficients (DMe) of Sr and Ba may stabilize after dynamic equilibrium is reached as the water elemental concentration increases, but are not affected by ocean acidification. Therefore, the incorporation of Sr and Ba into otoliths of the flounder at early life stages may not serve as an effective indicator of ocean acidification. In other words, the findings suggest that ocean acidification does not impact the incorporation of Sr and Ba incorporation into otoliths when tracing the temperature or salinity experiences of the flounder. Our findings will provide new knowledge for understanding the potential ecological effects of ocean acidification on the recruitment dynamics of fish species.
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Affiliation(s)
- Honglin Tian
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jinhu Liu
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Xiujuan Shan
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Liang Cao
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Xianshi Jin
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Shuozeng Dou
- University of Chinese Academy of Sciences, Beijing, China
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
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2
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Coulon N, Pilet S, Lizé A, Lacoue-Labarthe T, Sturbois A, Toussaint A, Feunteun E, Carpentier A. Shark critical life stage vulnerability to monthly temperature variations under climate change. MARINE ENVIRONMENTAL RESEARCH 2024; 198:106531. [PMID: 38696933 DOI: 10.1016/j.marenvres.2024.106531] [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: 02/05/2024] [Revised: 04/22/2024] [Accepted: 04/28/2024] [Indexed: 05/04/2024]
Abstract
In a 10-month experimental study, we assessed the combined impact of warming and acidification on critical life stages of small-spotted catshark (Scyliorhinus canicula). Using recently developed frameworks, we disentangled individual and group responses to two climate scenarios projected for 2100 (SSP2-4.5: Middle of the road and SSP5-8.5: Fossil-fueled Development). Seasonal temperature fluctuations revealed the acute vulnerability of embryos to summer temperatures, with hatching success ranging from 82% for the control and SSP2-4.5 treatments to only 11% for the SSP5-8.5 treatment. The death of embryos was preceded by distinct individual growth trajectories between the treatments, and also revealed inter-individual variations within treatments. Embryos with the lowest hatching success had lower yolk consumption rates, and growth rates associated with a lower energy assimilation, and almost all of them failed to transition to internal gills. Within 6 months after hatching, no additional mortality was observed due to cooler temperatures.
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Affiliation(s)
- Noémie Coulon
- Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) MNHN, CNRS, IRD, SU, UCN, UA, Station Marine de Dinard, Dinard, France.
| | - Stanislas Pilet
- Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) MNHN, CNRS, IRD, SU, UCN, UA, Station Marine de Dinard, Dinard, France
| | - Anne Lizé
- Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) MNHN, CNRS, IRD, SU, UCN, UA, Station Marine de Dinard, Dinard, France; School of Life Sciences, University of Liverpool, Liverpool, UK
| | - Thomas Lacoue-Labarthe
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266, CNRS-Université de La Rochelle, La Rochelle, France
| | - Anthony Sturbois
- VivArmor Nature, Réserve Naturelle Nationale de la Baie de Saint-Brieuc, Laboratoire des Sciences de l'environnement Marin (LEMAR), UMR 6539, France
| | - Aurèle Toussaint
- Centre de Recherche sur la Biodiversité et l'Environnement (CRBE), UMR5300 - UPS-CNRS-IRD-INP, Université Paul-Sabatier - Toulouse 3, Toulouse, France
| | - Eric Feunteun
- Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) MNHN, CNRS, IRD, SU, UCN, UA, Station Marine de Dinard, Dinard, France; Centre de GéoEcologie Littorale (CGEL, EPHE-PSL), Dinard, France
| | - Alexandre Carpentier
- Université de Rennes, Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) MNHN, CNRS, IRD, SU, UCN, UA, Campus de Beaulieu, Rennes, France
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3
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Berlino M, Mangano MC, Di Bona G, Lucchese M, Terzo SMC, De Vittor C, D'Alessandro M, Esposito V, Gambi MC, Del Negro P, Sarà G. Functional diversity and metabolic response in benthic communities along an ocean acidification gradient. MARINE ENVIRONMENTAL RESEARCH 2024; 198:106520. [PMID: 38685145 DOI: 10.1016/j.marenvres.2024.106520] [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: 11/09/2023] [Revised: 04/14/2024] [Accepted: 04/15/2024] [Indexed: 05/02/2024]
Abstract
Altered ocean chemistry caused by ocean acidification (OA) is expected to have negative repercussions at different levels of the ecological hierarchy, starting from the individual and scaling up to the community and ultimately to the ecosystem level. Understanding the effects of OA on benthic organisms is of primary importance given their relevant ecological role in maintaining marine ecosystem functioning. The use of functional traits represents an effective technique to investigate how species adapt to altered environmental conditions and can be used to predict changes in the resilience of communities faced with stresses associated with climate change. Artificial supports were deployed for 1-y along a natural pH gradient in the shallow hydrothermal systems of the Bottaro crater near Panarea (Aeolian Archipelago, southern Tyrrhenian Sea), to explore changes in functional traits and metabolic rates of benthic communities and the repercussions in terms of functional diversity. Changes in community composition due to OA were accompanied by modifications in functional diversity. Altered conditions led to higher oxygen consumption in the acidified site and the selection of species with the functional traits needed to withstand OA. Calcification rate and reproduction were found to be the traits most affected by pH variations. A reduction in a community's functional evenness could potentially reduce its resilience to further environmental or anthropogenic stressors. These findings highlight the ability of the ecosystem to respond to climate change and provide insights into the modifications that can be expected given the predicted future pCO2 scenarios. Understanding the impact of climate change on functional diversity and thus on community functioning and stability is crucial if we are to predict changes in ecosystem vulnerability, especially in a context where OA occurs in combination with other environmental changes and anthropogenic stressors.
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Affiliation(s)
- M Berlino
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology (EMI), Sicily Marine Centre, Lungomare Cristoforo Colombo (complesso Roosevelt), 90149, Palermo, Italy; Dipartimento di Scienze della Terra e del Mare, DiSTeM, Università degli Studi di Palermo Ed. 16, 90128, Palermo, Italy; NBFC, National Biodiversity Future Center, Palermo Viale delle Scienze Ed. 16, 90128, Palermo, Italy.
| | - M C Mangano
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology (EMI), Sicily Marine Centre, Lungomare Cristoforo Colombo (complesso Roosevelt), 90149, Palermo, Italy; NBFC, National Biodiversity Future Center, Palermo Viale delle Scienze Ed. 16, 90128, Palermo, Italy
| | - G Di Bona
- Dipartimento di Scienze della Terra e del Mare, DiSTeM, Università degli Studi di Palermo Ed. 16, 90128, Palermo, Italy; NBFC, National Biodiversity Future Center, Palermo Viale delle Scienze Ed. 16, 90128, Palermo, Italy
| | - M Lucchese
- Dipartimento di Scienze della Terra e del Mare, DiSTeM, Università degli Studi di Palermo Ed. 16, 90128, Palermo, Italy; NBFC, National Biodiversity Future Center, Palermo Viale delle Scienze Ed. 16, 90128, Palermo, Italy; National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - S M C Terzo
- Dipartimento di Scienze della Terra e del Mare, DiSTeM, Università degli Studi di Palermo Ed. 16, 90128, Palermo, Italy; NBFC, National Biodiversity Future Center, Palermo Viale delle Scienze Ed. 16, 90128, Palermo, Italy; Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, Viale Fernando Stagno d'Alcontres 3, University of Messina, Messina, Italy; Department of Ecosustainable Marine Biotechnology, Stazione Zoologica Anton Dohrn, Via A.F. Acton, Molosiglio, Napoli, 80133, Italy
| | - C De Vittor
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - M D'Alessandro
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - V Esposito
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy; Stazione Zoologica Anton Dohrn, Research Infrastructures for Marine Biological Resources Department, Via Po 25, 00198, Roma, Italy
| | - M C Gambi
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy; Previous at the Stazione Zoologica Anton Dohrn, Department of Marine Integrative Ecology (EMI), Ischia Marine Center, Ischia Napoli, Italy
| | - P Del Negro
- National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy
| | - G Sarà
- Dipartimento di Scienze della Terra e del Mare, DiSTeM, Università degli Studi di Palermo Ed. 16, 90128, Palermo, Italy; NBFC, National Biodiversity Future Center, Palermo Viale delle Scienze Ed. 16, 90128, Palermo, Italy
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4
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Hu N, Bourdeau PE, Hollander J. Responses of marine trophic levels to the combined effects of ocean acidification and warming. Nat Commun 2024; 15:3400. [PMID: 38649374 PMCID: PMC11035698 DOI: 10.1038/s41467-024-47563-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 04/04/2024] [Indexed: 04/25/2024] Open
Abstract
Marine organisms are simultaneously exposed to anthropogenic stressors associated with ocean acidification and ocean warming, with expected interactive effects. Species from different trophic levels with dissimilar characteristics and evolutionary histories are likely to respond differently. Here, we perform a meta-analysis of controlled experiments including both ocean acidification and ocean warming factors to investigate single and interactive effects of these stressors on marine species. Contrary to expectations, we find that synergistic interactions are less common (16%) than additive (40%) and antagonistic (44%) interactions overall and their proportion decreases with increasing trophic level. Predators are the most tolerant trophic level to both individual and combined effects. For interactive effects, calcifying and non-calcifying species show similar patterns. We also identify climate region-specific patterns, with interactive effects ranging from synergistic in temperate regions to compensatory in subtropical regions, to positive in tropical regions. Our findings improve understanding of how ocean warming, and acidification affect marine trophic levels and highlight the need for deeper consideration of multiple stressors in conservation efforts.
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Affiliation(s)
- Nan Hu
- Department of Biology- Aquatic Ecology, Lund University, Lund, Sweden
| | - Paul E Bourdeau
- Department of Biological Sciences, California State Polytechnic University, Humboldt, Arcata, CA, USA
| | - Johan Hollander
- World Maritime University, Ocean Sustainability, Governance & Management Unit, 211 18, Malmö, Sweden.
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5
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Alter K, Jacquemont J, Claudet J, Lattuca ME, Barrantes ME, Marras S, Manríquez PH, González CP, Fernández DA, Peck MA, Cattano C, Milazzo M, Mark FC, Domenici P. Hidden impacts of ocean warming and acidification on biological responses of marine animals revealed through meta-analysis. Nat Commun 2024; 15:2885. [PMID: 38570485 PMCID: PMC10991405 DOI: 10.1038/s41467-024-47064-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 03/19/2024] [Indexed: 04/05/2024] Open
Abstract
Conflicting results remain on the impacts of climate change on marine organisms, hindering our capacity to predict the future state of marine ecosystems. To account for species-specific responses and for the ambiguous relation of most metrics to fitness, we develop a meta-analytical approach based on the deviation of responses from reference values (absolute change) to complement meta-analyses of directional (relative) changes in responses. Using this approach, we evaluate responses of fish and invertebrates to warming and acidification. We find that climate drivers induce directional changes in calcification, survival, and metabolism, and significant deviations in twice as many biological responses, including physiology, reproduction, behavior, and development. Widespread deviations of responses are detected even under moderate intensity levels of warming and acidification, while directional changes are mostly limited to more severe intensity levels. Because such deviations may result in ecological shifts impacting ecosystem structures and processes, our results suggest that climate change will likely have stronger impacts than those previously predicted based on directional changes alone.
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Affiliation(s)
- Katharina Alter
- Royal Netherlands Institute for Sea Research, Department of Coastal Systems, P.O. Box 59, 1790, AB, Den Burg, The Netherlands.
| | - Juliette Jacquemont
- School of Aquatic and Fishery Sciences, University of Washington, 1122 NE Boat St, 98195, Seattle, WA, USA
- National Center for Scientific Research, PSL Université Paris, CRIOBE, CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, 75005, Paris, France
| | - Joachim Claudet
- National Center for Scientific Research, PSL Université Paris, CRIOBE, CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, 75005, Paris, France
| | - María E Lattuca
- Centro Austral de Investigaciones Científicas (CADIC-CONICET), Bernardo Houssay 200, V9410CAB, Ushuaia, Argentina
| | - María E Barrantes
- Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur; Instituto de Ciencias Polares, Ambiente y Recursos Naturales (UNTDF - ICPA), Fuegia Basket 251, V9410BXE, Ushuaia, Argentina
| | - Stefano Marras
- CNR-IAS, Consiglio Nazionale delle Ricerche, Instituto per lo studio degli Impatti Antropici e Sostenibilità in ambiente marino. Località Sa Mardini, 09170, Torregrande, Oristano, Italy
| | - Patricio H Manríquez
- Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile
- Laboratorio de Ecología y Conducta de la Ontogenia Temprana (LECOT), Coquimbo, Chile
| | - Claudio P González
- Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile
- Laboratorio de Ecología y Conducta de la Ontogenia Temprana (LECOT), Coquimbo, Chile
| | - Daniel A Fernández
- Centro Austral de Investigaciones Científicas (CADIC-CONICET), Bernardo Houssay 200, V9410CAB, Ushuaia, Argentina
- Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur; Instituto de Ciencias Polares, Ambiente y Recursos Naturales (UNTDF - ICPA), Fuegia Basket 251, V9410BXE, Ushuaia, Argentina
| | - Myron A Peck
- Royal Netherlands Institute for Sea Research, Department of Coastal Systems, P.O. Box 59, 1790, AB, Den Burg, The Netherlands
- Wageningen University, Department of Animal Sciences, Marine Animal Ecology Group, De Elst 1, 6708, WD, Wageningen, The Netherlands
| | - Carlo Cattano
- NBFC, National Biodiversity Future Center, Palermo, Italy
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn (SZN), Lungomare Cristoforo Colombo, I-90149, Palermo, Italy
| | - Marco Milazzo
- NBFC, National Biodiversity Future Center, Palermo, Italy
- Dipartimento di Scienze della Terra e del Mare (DiSTeM), Università di Palermo, Via Archirafi 20, I-90123, Palermo, Italy
| | - Felix C Mark
- Section of Integrative Ecophysiology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany
| | - Paolo Domenici
- CNR-IAS, Consiglio Nazionale delle Ricerche, Instituto per lo studio degli Impatti Antropici e Sostenibilità in ambiente marino. Località Sa Mardini, 09170, Torregrande, Oristano, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
- CNR-IBF, Area di Ricerca San Cataldo, Via G. Moruzzi N°1, 56124, Pisa, Italy
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6
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Talbot E, Jontila JBS, Gonzales BJ, Dolorosa RG, Jose ED, Sajorne R, Sailley S, Kay S, Queirós AM. Incorporating climate-readiness into fisheries management strategies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 918:170684. [PMID: 38320704 DOI: 10.1016/j.scitotenv.2024.170684] [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: 08/04/2023] [Revised: 01/15/2024] [Accepted: 02/02/2024] [Indexed: 02/10/2024]
Abstract
Tropical oceans are among the first places to exhibit climate change signals, affecting the habitat distribution and abundance of marine fish. These changes to stocks, and subsequent impacts on fisheries production, may have considerable implications for coastal communities dependent on fisheries for food security and livelihoods. Understanding the impacts of climate change on tropical marine fisheries is therefore an important step towards developing sustainable, climate-ready fisheries management measures. We apply an established method of spatial meta-analysis to assess species distribution modelling datasets for key species targeted by the Philippines capture fisheries. We analysed datasets under two global emissions scenarios (RCP4.5 and RCP8.5) and varying degrees of fishing pressure to quantify potential climate vulnerability of the target community. We found widespread responses to climate change in pelagic species in particular, with abundances projected to decline across much of the case study area, highlighting the challenges of maintaining food security in the face of a rapidly changing climate. We argue that sustainable fisheries management in the Philippines in the face of climate change can only be achieved through management strategies that allow for the mitigation of, and adaptation to, pressures already locked into the climate system for the near term. Our analysis may support this, providing fisheries managers with the means to identify potential climate change hotspots, bright spots and refugia, thereby supporting the development of climate-ready management plans.
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Affiliation(s)
- Elizabeth Talbot
- Plymouth Marine Laboratory, Prospect Place, Plymouth PL1 3DH, United Kingdom.
| | - Jean-Beth S Jontila
- College of Fisheries and Aquatic Sciences, Western Philippines University, Puerto Princesa City, Philippines
| | - Benjamin J Gonzales
- College of Fisheries and Aquatic Sciences, Western Philippines University, Puerto Princesa City, Philippines
| | - Roger G Dolorosa
- College of Fisheries and Aquatic Sciences, Western Philippines University, Puerto Princesa City, Philippines
| | - Edgar D Jose
- College of Arts and Sciences, North Eastern Mindanao State University, Lianga, Surigao Del Sur, Philippines
| | - Recca Sajorne
- College of Fisheries and Aquatic Sciences, Western Philippines University, Puerto Princesa City, Philippines
| | - Sevrine Sailley
- Plymouth Marine Laboratory, Prospect Place, Plymouth PL1 3DH, United Kingdom
| | - Susan Kay
- Plymouth Marine Laboratory, Prospect Place, Plymouth PL1 3DH, United Kingdom
| | - Ana M Queirós
- Plymouth Marine Laboratory, Prospect Place, Plymouth PL1 3DH, United Kingdom
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7
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Truong AT, Edwards MS, Long JD. Season-specific impacts of climate change on canopy-forming seaweed communities. Ecol Evol 2024; 14:e10947. [PMID: 38357589 PMCID: PMC10864935 DOI: 10.1002/ece3.10947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 11/22/2023] [Accepted: 12/06/2023] [Indexed: 02/16/2024] Open
Abstract
Understory assemblages associated with canopy-forming species such as trees, kelps, and rockweeds should respond strongly to climate stressors due to strong canopy-understory interactions. Climate change can directly and indirectly modify these assemblages, particularly during more stressful seasons and climate scenarios. However, fully understanding the seasonal impacts of different climate conditions on canopy-reliant assemblages is difficult due to a continued emphasis on studying single-species responses to a single future climate scenario during a single season. To examine these emergent effects, we used mesocosm experiments to expose seaweed assemblages associated with the canopy-forming golden rockweed, Silvetia compressa, to elevated temperature and pCO2 conditions reflecting two projected greenhouse emission scenarios (RCP 2.6 [low] & RCP 4.5 [moderate]). Assemblages were grown in the presence and absence of Silvetia, and in two seasons. Relative to ambient conditions, predicted climate scenarios generally suppressed Silvetia biomass and photosynthetic efficiency. However, these effects varied seasonally-both future scenarios reduced Silvetia biomass in summer, but only the moderate scenario did so in winter. These reductions shifted the assemblage, with more extreme shifts occurring in summer. Contrarily, future scenarios did not shift assemblages within Silvetia Absent treatments, suggesting that climate primarily affected assemblages indirectly through changes in Silvetia. Mesocosm experiments were coupled with a field Silvetia removal experiment to simulate the effects of climate-mediated Silvetia loss on natural assemblages. Consistent with the mesocosm experiment, Silvetia loss resulted in season-specific assemblage shifts, with weaker effects observed in winter. Together, our study supports the hypotheses that climate-mediated changes to canopy-forming species can indirectly affect the associated assemblage, and that these effects vary seasonally. Such seasonality is important to consider as it may provide periods of recovery when conditions are less stressful, especially if we can reduce the severity of future climate scenarios.
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Affiliation(s)
- Anthony T. Truong
- Department of BiologySan Diego State UniversitySan DiegoCaliforniaUSA
| | | | - Jeremy D. Long
- Department of BiologySan Diego State UniversitySan DiegoCaliforniaUSA
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8
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Borges FO, Sampaio E, Santos CP, Rosa R. Climate-Change Impacts on Cephalopods: A Meta-Analysis. Integr Comp Biol 2023; 63:1240-1265. [PMID: 37468442 DOI: 10.1093/icb/icad102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/13/2023] [Accepted: 07/16/2023] [Indexed: 07/21/2023] Open
Abstract
Aside from being one of the most fascinating groups of marine organisms, cephalopods play a major role in marine food webs, both as predators and as prey, while representing key living economic assets, namely for artisanal and subsistence fisheries worldwide. Recent research suggests that cephalopods are benefitting from ongoing environmental changes and the overfishing of certain fish stocks (i.e., of their predators and/or competitors), putting forward the hypothesis that this group may be one of the few "winners" of climate change. While many meta-analyses have demonstrated negative and overwhelming consequences of ocean warming (OW), acidification (OA), and their combination for a variety of marine taxa, such a comprehensive analysis is lacking for cephalopod molluscs. In this context, the existing literature was surveyed for peer-reviewed articles featuring the sustained (≥24 h) and controlled exposure of cephalopod species (Cephalopoda class) to these factors, applying a comparative framework of mixed-model meta-analyses (784 control-treatment comparisons, from 47 suitable articles). Impacts on a wide set of biological categories at the individual level (e.g., survival, metabolism, behavior, cell stress, growth) were evaluated and contrasted across different ecological attributes (i.e., taxonomic lineages, climates, and ontogenetic stages). Contrary to what is commonly assumed, OW arises as a clear threat to cephalopods, while OA exhibited more restricted impacts. In fact, OW impacts were ubiquitous across different stages of ontogeny, taxonomical lineages (i.e., octopuses, squids, and cuttlefish). These results challenge the assumption that cephalopods benefit from novel ocean conditions, revealing an overarching negative impact of OW in this group. Importantly, we also identify lingering literature gaps, showing that most studies to date focus on OW and early life stages of mainly temperate species. Our results raise the need to consolidate experimental efforts in a wider variety of taxa, climate regions, life stages, and other key environmental stressors, such as deoxygenation and hypoxia, to better understand how cephalopods will cope with future climate change.
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Affiliation(s)
- Francisco O Borges
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Cascais, Lisboa 1749-016, Portugal
| | - Eduardo Sampaio
- Department of Collective Behaviour, Max Planck Institute of Animal Behavior, Universitatsstrasse 10, Konstanz 78464, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Konstanz 78464, Germany
- Department of Biology, University of Konstanz, Universitatsstrasse 10, Konstanz 78464, Germany
| | - Catarina P Santos
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Cascais, Lisboa 1749-016, Portugal
- Environmental Economics Knowledge Center, Nova School of Business and Economics, New University of Lisbon, Carcavelos 2775-405, Portugal
- Sphyrna Association, Boa Vista Island, Sal Rei, Cape Verde
| | - Rui Rosa
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Cascais, Lisboa 1749-016, Portugal
- Department of Animal Biology, Faculdade de Ciências da Universidade de Lisboa, Lisboa1 749-016, Portugal
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9
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Czaja R, Pales-Espinosa E, Cerrato RM, Lwiza K, Allam B. Using meta-analysis to explore the roles of global upwelling exposure and experimental design in bivalve responses to low pH. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 902:165900. [PMID: 37572507 DOI: 10.1016/j.scitotenv.2023.165900] [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: 02/07/2023] [Revised: 07/20/2023] [Accepted: 07/28/2023] [Indexed: 08/14/2023]
Abstract
Low pH conditions, associated with ocean acidification, represent threats to many commercially and ecologically important organisms, including bivalves. However, there are knowledge gaps regarding factors explaining observed differences in biological responses to low pH in laboratory experiments. Specific sources of local adaptation such as upwelling exposure and the role of experimental design, such as carbonate chemistry parameter changes, should be considered. Linking upwelling exposure, as an individual oceanographic phenomenon, to responses measured in laboratory experiments may further our understanding of local adaptation to global change. Here, meta-analysis is used to test the hypotheses that upwelling exposure and experimental design affect outcomes of individual, laboratory-based studies that assess bivalve metabolic (clearance and respiration rate) responses to low pH. Results show that while bivalves generally decrease metabolic activity in response to low pH, upwelling exposure and experimental design can significantly impact outcomes. Bivalves from downwelling or weak upwelling areas decrease metabolic activity in response to low pH, but bivalves from strong upwelling areas increase or do not change metabolic activity in response to low pH. Furthermore, experimental temperature, exposure time and magnitude of the change in carbonate chemistry parameters all significantly affect outcomes. These results suggest that bivalves from strong upwelling areas may be less sensitive to low pH. This furthers our understanding of local adaptation to global change by demonstrating that upwelling alone can explain up to 49 % of the variability associated with bivalve metabolic responses to low pH. Furthermore, when interpreting outcomes of individual, laboratory experiments, scientists should be aware that higher temperatures, shorter exposure times and larger changes in carbonate chemistry parameters may increase the chance of suppressed metabolic activity.
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Affiliation(s)
- Raymond Czaja
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States of America.
| | - Emmanuelle Pales-Espinosa
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States of America
| | - Robert M Cerrato
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States of America
| | - Kamazima Lwiza
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States of America
| | - Bassem Allam
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States of America.
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10
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Sundin J. The effects of ocean acidification on fishes - history and future outlook. JOURNAL OF FISH BIOLOGY 2023; 103:765-772. [PMID: 36648022 DOI: 10.1111/jfb.15323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 01/14/2023] [Indexed: 06/17/2023]
Abstract
The effects of increased levels of carbon dioxide (CO2 ) on the Earth's temperature have been known since the end of the 19th century. It was long believed that the oceans' buffering capacity would counteract any effects of dissolved CO2 in marine environments, but during recent decades, many studies have reported detrimental effects of ocean acidification on aquatic organisms. The most prominent effects can be found within the field of behavioural ecology, e.g., complete reversal of predator avoidance behaviour in CO2 -exposed coral reef fish. Some of the studies have been very influential, receiving hundreds of citations over recent years. The results have also been conveyed to policymakers and publicized in prominent media outlets for the general public. Those extreme effects of ocean acidification on fish behaviour have, however, spurred controversy, given that more than a century of research suggests that there are few or no negative effects of elevated CO2 on fish physiology. This is due to sophisticated acid-base regulatory mechanisms that should enable their resilience to near-future increases in CO2 . In addition, an extreme "decline effect" has recently been shown in the literature regarding ocean acidification and fish behaviour, and independent research groups have been unable to replicate some of the most profound effects. Here, the author presents a brief historical overview on the effects of elevated CO2 and ocean acidification on fishes. This historical recap is warranted because earlier work, prior to a recent (c. 10 year) explosion in interest, is often overlooked in today's ocean acidification studies, despite its value to the field. Based on the historical data and the current knowledge status, the author suggests future strategies with the aim to improve research rigour and clarify the understanding of the effects of ocean acidification on fishes.
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Affiliation(s)
- Josefin Sundin
- Department of Aquatic Resources, Swedish University of Agricultural Sciences, Drottningholm, Sweden
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11
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Suresh S, Mirasole A, Ravasi T, Vizzini S, Schunter C. Brain transcriptome of gobies inhabiting natural CO 2 seeps reveal acclimation strategies to long-term acidification. Evol Appl 2023; 16:1345-1358. [PMID: 37492147 PMCID: PMC10363848 DOI: 10.1111/eva.13574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 07/27/2023] Open
Abstract
Ocean acidification (OA) is known to affect the physiology, survival, behaviour and fitness of various fish species with repercussions at the population, community and ecosystem levels. Some fish species, however, seem to acclimate rapidly to OA conditions and even thrive in acidified environments. The molecular mechanisms that enable species to successfully inhabit high CO2 environments have not been fully elucidated especially in wild fish populations. Here, we used the natural CO2 seep in Vulcano Island, Italy to study the effects of elevated CO2 exposure on the brain transcriptome of the anemone goby, a species with high population density in the CO2 seep and investigate their potential for acclimation. Compared to fish from environments with ambient CO2, gobies living in the CO2 seep showed differences in the expression of transcripts involved in ion transport and pH homeostasis, cellular stress, immune response, circadian rhythm and metabolism. We also found evidence of potential adaptive mechanisms to restore the functioning of GABAergic pathways, whose activity can be affected by exposure to elevated CO2 levels. Our findings indicate that gobies living in the CO2 seep may be capable of mitigating CO2-induced oxidative stress and maintaining physiological pH while meeting the consequent increased energetic costs. The conspicuous difference in the expression of core circadian rhythm transcripts could provide an adaptive advantage by increasing the flexibility of physiological processes in elevated CO2 conditions thereby facilitating acclimation. Our results show potential molecular processes of acclimation to elevated CO2 in gobies enabling them to thrive in the acidified waters of Vulcano Island.
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Affiliation(s)
- Sneha Suresh
- Swire Institute of Marine Science, School of Biological SciencesThe University of Hong KongHong Kong SARChina
| | - Alice Mirasole
- Department of Integrative Marine EcologyIschia Marine Centre, Stazione Zoologica Anton DohrnNaplesItaly
| | - Timothy Ravasi
- Marine Climate Change UnitOkinawa Institute of Science and Technology Graduate UniversityOnna‐sonJapan
- Australian Research Council Centre of Excellence for Coral Reef StudiesJames Cook UniversityTownsvilleQueenslandAustralia
| | - Salvatrice Vizzini
- Department of Earth and Marine SciencesUniversity of PalermoPalermoItaly
- CoNISMa, National Inter‐University Consortium for Marine ScienceRomaItaly
| | - Celia Schunter
- Swire Institute of Marine Science, School of Biological SciencesThe University of Hong KongHong Kong SARChina
- State Key Laboratory of Marine PollutionCity University of Hong KongHong Kong SARChina
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12
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Onthank KL, Foster J, Preston Carman Jr E, Foster JE, Culler-Juarez M, Calvo E, Duerksen W, Natiuk T, Saca L. The Open acidification Tank Controller: An open-source device for the control of pH and temperature in ocean acidification experiments. HARDWAREX 2023; 14:e00435. [PMID: 37333768 PMCID: PMC10276295 DOI: 10.1016/j.ohx.2023.e00435] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/05/2023] [Accepted: 05/22/2023] [Indexed: 06/20/2023]
Abstract
Ocean acidification is the process by which the increase in atmospheric CO2 causes a corresponding increase in seawater CO2 and results in lowering the seawater pH. While this process is likely to have substantial impacts on marine ecosystems, research into the effect of ocean acidification has been limited by the high costs of quality tools to perform ocean acidification treatments in the lab. The Open Acidification Tank Controller is designed to reduce the cost of ocean acidification research by providing a device that can monitor and control pH and temperature of aquaria as well as or better than commercially available research-grade devices, but for less than $250 USD per aquarium. The device is centered around an Arduino Mega 2560 and is assembled into a 3D printed housing. It monitors pH using a BNC glass pH probe and temperature using a three-wire waterproof PT100 temperature sensor. The Open Acidification Tank Controller also features web-based parameter reporting, and data storage to a micro-SD card. This device can hold aquarium pH and temperature at given setpoints, ramp between two values over a user-defined time period, or produce a sine-wave fluctuation in values.
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Affiliation(s)
- Kirt L Onthank
- Department of Biological Sciences, Walla Walla University, College Place, WA, United States
| | - James Foster
- Department of Computer Science, Walla Walla University, College Place, WA, United States
| | - E. Preston Carman Jr
- Department of Computer Science, Walla Walla University, College Place, WA, United States
| | - John E. Foster
- Department of Mathematics, Walla Walla University, College Place, WA, United States
| | - Monica Culler-Juarez
- Department of Biological Sciences, Walla Walla University, College Place, WA, United States
| | - Eliam Calvo
- Department of Computer Science, Walla Walla University, College Place, WA, United States
| | - Wesley Duerksen
- Department of Computer Science, Walla Walla University, College Place, WA, United States
| | - Trevor Natiuk
- Department of Computer Science, Walla Walla University, College Place, WA, United States
| | - Lucas Saca
- Department of Computer Science, Walla Walla University, College Place, WA, United States
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13
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Czaja R, Holmberg R, Pales Espinosa E, Hennen D, Cerrato R, Lwiza K, O'Dwyer J, Beal B, Root K, Zuklie H, Allam B. Behavioral and physiological effects of ocean acidification and warming on larvae of a continental shelf bivalve. MARINE POLLUTION BULLETIN 2023; 192:115048. [PMID: 37236091 DOI: 10.1016/j.marpolbul.2023.115048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 04/13/2023] [Accepted: 05/07/2023] [Indexed: 05/28/2023]
Abstract
The negative impacts of ocean warming and acidification on bivalve fisheries are well documented but few studies investigate parameters relevant to energy budgets and larval dispersal. This study used laboratory experiments to assess developmental, physiological and behavioral responses to projected climate change scenarios using larval Atlantic surfclams Spisula solidissima solidissima, found in northwest Atlantic Ocean continental shelf waters. Ocean warming increased feeding, scope for growth, and biomineralization, but decreased swimming speed and pelagic larval duration. Ocean acidification increased respiration but reduced immune performance and biomineralization. Growth increased under ocean warming only, but decreased under combined ocean warming and acidification. These results suggest that ocean warming increases metabolic activity and affects larval behavior, while ocean acidification negatively impacts development and physiology. Additionally, principal component analysis demonstrated that growth and biomineralization showed similar response profiles, but inverse response profiles to respiration and swimming speed, suggesting alterations in energy allocation under climate change.
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Affiliation(s)
- Raymond Czaja
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States
| | - Robert Holmberg
- Downeast Institute, 39 Wildflower Lane, P.O. Box 83, Beals, ME 04611, United States
| | - Emmanuelle Pales Espinosa
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States
| | - Daniel Hennen
- Northeast Fisheries Science Center, 166 Water Street Woods Hole, MA 02543-1026, United States
| | - Robert Cerrato
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States
| | - Kamazima Lwiza
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States
| | - Jennifer O'Dwyer
- New York State Department of Environmental Conservation, East Setauket, NY 1173, United States
| | - Brian Beal
- Downeast Institute, 39 Wildflower Lane, P.O. Box 83, Beals, ME 04611, United States; University of Maine at Machias, 116 O'Brien Avenue, Machias, ME 04654, United States
| | - Kassandra Root
- Downeast Institute, 39 Wildflower Lane, P.O. Box 83, Beals, ME 04611, United States
| | - Hannah Zuklie
- Downeast Institute, 39 Wildflower Lane, P.O. Box 83, Beals, ME 04611, United States
| | - Bassem Allam
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790-5000, United States.
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14
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Cheng L, Bai Z, Wei H, Chen Y, Wang M. High and diurnally fluctuating carbon dioxide exposure produces lower mercury toxicity in a marine copepod. MARINE POLLUTION BULLETIN 2023; 192:115016. [PMID: 37182245 DOI: 10.1016/j.marpolbul.2023.115016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 12/28/2022] [Accepted: 05/02/2023] [Indexed: 05/16/2023]
Abstract
Coastal waters have experienced fluctuations in partial pressure of carbon dioxide (pCO2) and mercury (Hg) pollution, yet little is known concerning how natural pCO2 fluctuations affect Hg biotoxicity. Here, a marine copepod Tigriopus japonicus was interactively exposed to different seawater pCO2 (ambient 400, steady elevated 1000, and fluctuating elevated 1000 ± 600 μatm) scenarios and Hg (control, 2 μg/L) treatments for 7 d. The results showed that elevated pCO2 decreased Hg bioaccumulation, and it was even more under fluctuating elevated pCO2 condition. We found energy depletion and oxidative stress under Hg-treated copepods, while combined exposure initiated compensatory response to alleviate Hg toxicity. Intriguingly, fluctuating acidification presented more immune defense related genes/processes in Hg-treated copepods when compared to steady acidification, probably linking with the greater decrease in Hg bioaccumulation. Collectively, understanding how fluctuating acidification interacts with Hg contaminant will become more crucial in predicting their risks to coastal biota and ecosystems.
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Affiliation(s)
- Luman Cheng
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen 361102, China
| | - Zhuoan Bai
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen 361102, China
| | - Hui Wei
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen 361102, China
| | - Yao Chen
- Xiamen Marine Environmental Monitoring Central Station (SOA), Xiamen 361008, China.
| | - Minghua Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen 361102, China.
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15
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Messina S, Costantini D, Eens M. Impacts of rising temperatures and water acidification on the oxidative status and immune system of aquatic ectothermic vertebrates: A meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 868:161580. [PMID: 36646226 DOI: 10.1016/j.scitotenv.2023.161580] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/21/2022] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Species persistence in the Anthropocene is dramatically threatened by global climate change. Large emissions of carbon dioxide (CO2) from human activities are driving increases in mean temperature, intensity of heatwaves, and acidification of oceans and freshwater bodies. Ectotherms are particularly sensitive to CO2-induced stressors, because the rate of their metabolic reactions, as well as their immunological performance, are affected by environmental temperatures and water pH. We reviewed and performed a meta-analysis of 56 studies, involving 1259 effect sizes, that compared oxidative status or immune function metrics between 42 species of ectothermic vertebrates exposed to long-term increased temperatures or water acidification (≥48 h), and those exposed to control parameters resembling natural conditions. We found that CO2-induced stressors enhance levels of molecular oxidative damages in ectotherms, while the activity of antioxidant enzymes was upregulated only at higher temperatures, possibly due to an increased rate of biochemical reactions dependent on the higher ambient temperature. Differently, both temperature and water acidification showed weak impacts on immune function, indicating different direction (increase or decrease) of responses among immune traits. Further, we found that the intensity of temperature treatments (Δ°C) and their duration, enhance the physiological response of ectotherms, pointing to stronger effects of prolonged extreme warming events (i.e., heatwaves) on the oxidative status. Finally, adult individuals showed weaker antioxidant enzymatic responses to an increase in water temperature compared to early life stages, suggesting lower acclimation capacity. Antarctic species showed weaker antioxidant response compared to temperate and tropical species, but level of uncertainty in the antioxidant enzymatic response of Antarctic species was high, thus pairwise comparisons were statistically non-significant. Overall, the results of this meta-analysis indicate that the regulation of oxidative status might be one key mechanism underlying thermal plasticity in aquatic ectothermic vertebrates.
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Affiliation(s)
- Simone Messina
- Behavioural Ecology & Ecophysiology Group, Department of Biology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium; Department of Ecological and Biological Sciences, Tuscia University, Largo dell'Università s.n.c., 01100 Viterbo, Italy.
| | - David Costantini
- Department of Ecological and Biological Sciences, Tuscia University, Largo dell'Università s.n.c., 01100 Viterbo, Italy; Unité Physiologie Moléculaire et Adaptation, UMR 7221, Muséum National d'Histoire Naturelle, CNRS - 7 rue Cuvier, 75005 Paris, France
| | - Marcel Eens
- Behavioural Ecology & Ecophysiology Group, Department of Biology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
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16
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Traynor EM, Hasler CT. Elevated CO 2 levels did not induce species- or tissue-specific damage in young-of-year salmonids. JOURNAL OF AQUATIC ANIMAL HEALTH 2023. [PMID: 36807591 DOI: 10.1002/aah.10180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 12/12/2022] [Accepted: 02/11/2023] [Indexed: 05/24/2023]
Abstract
OBJECTIVE The broad objective of our study was to use a histological approach to examine possible tissue-level effects of exposure to elevated CO2 in freshwater young-of-year salmonids. METHODS To study these effects, young-of-year Arctic Char Salvelinus alpinus, Rainbow Trout Oncorhynchus mykiss, and Brook Trout S. fontinalis were exposed to either control levels of CO2 (1400 μatm) or elevated levels of CO2 (5236 μatm) for 15 days. Fish were then sampled for gill, liver, and heart tissues and histologically analyzed. RESULT A species effect was observed for the length of secondary lamellae, as Arctic Char had significantly shorter secondary lamellae than the other species. No notable changes within the gills and livers of Arctic Char, Brook Trout, or Rainbow Trout exposed to elevated CO2 were observed. CONCLUSION Generally, our results indicated that elevated CO2 levels over 15 days do not induce catastrophic tissue damage and it is unlikely that fish health would be seriously impacted. Ongoing research dedicated to examining how elevated CO2 long-term may affect internal tissues of fish will allow for a more comprehensive understanding of how fish may fair with ongoing climate change and in aquaculture facilities.
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Affiliation(s)
- Emma M Traynor
- Department of Biology, The University of Winnipeg, Winnipeg, Manitoba, Canada
| | - Caleb T Hasler
- Department of Biology, The University of Winnipeg, Winnipeg, Manitoba, Canada
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17
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Heuer RM, Wang Y, Pasparakis C, Zhang W, Scholey V, Margulies D, Grosell M. Effects of elevated CO 2 on metabolic rate and nitrogenous waste handling in the early life stages of yellowfin tuna (Thunnus albacares). Comp Biochem Physiol A Mol Integr Physiol 2023; 280:111398. [PMID: 36775093 DOI: 10.1016/j.cbpa.2023.111398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/05/2023] [Accepted: 02/05/2023] [Indexed: 02/12/2023]
Abstract
Ocean acidification is predicted to have a wide range of impacts on fish, but there has been little focus on broad-ranging pelagic fish species. Early life stages of fish are thought to be particularly susceptible to CO2 exposure, since acid-base regulatory faculties may not be fully developed. We obtained yellowfin tuna (Thunnus albacares) from a captive spawning broodstock population and exposed them to control or 1900 μatm CO2 through the first three days of development as embryos transitioned into yolk sac larvae. Metabolic rate, yolk sac depletion, and oil globule depletion were measured to assess overall energy usage. To determine if CO2 altered protein catabolism, tissue nitrogen content and nitrogenous waste excretion were quantified. CO2 exposure did not significantly impact embryonic metabolic rate, yolk sac depletion, or oil globule depletion, however, there was a significant decrease in metabolic rate at the latest measured yolk sac larval stage (36 h post fertilization). CO2-exposure led to a significant increase in nitrogenous waste excretion in larvae, but there were no differences in nitrogen tissue accumulation. Nitrogenous waste accumulated in embryos as they developed but decreased after hatch, coinciding with a large increase in nitrogenous waste excretion and increased metabolic rate in newly hatched larvae. Our results provide insight into how yellowfin tuna are impacted by increases in CO2 in early development, but more research with higher levels of replication is needed to better understand long-term impacts and acid-base regulatory mechanisms in this important pelagic fish.
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Affiliation(s)
- Rachael M Heuer
- University of Miami, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, FL 33149, USA.
| | - Yadong Wang
- University of Miami, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, FL 33149, USA
| | - Christina Pasparakis
- University of Miami, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, FL 33149, USA. https://twitter.com/ChristinaP47
| | - Wenlong Zhang
- University of Miami, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, FL 33149, USA
| | - Vernon Scholey
- Inter-American Tropical Tuna Commission, Achotines Laboratory, Las Tablas, Los Santos Province, Panama
| | - Daniel Margulies
- Inter-American Tropical Tuna Commission, 8901 La Jolla Shores Drive, La Jolla, California, USA
| | - Martin Grosell
- University of Miami, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, FL 33149, USA. https://twitter.com/MartinGrosell
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18
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Established and Emerging Research Trends in Norway Lobster, Nephrops norvegicus. BIOLOGY 2023; 12:biology12020225. [PMID: 36829502 PMCID: PMC9953252 DOI: 10.3390/biology12020225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/10/2023] [Accepted: 01/24/2023] [Indexed: 02/04/2023]
Abstract
The burrowing crustacean decapod Nephrops norvegicus is a significant species in European Atlantic and Mediterranean fisheries. Research over the decades has mainly focused on behavioral and physiological aspects related to the burrowing lifestyle, since animals can only be captured by trawls when engaged in emergence on the seabed. Here, we performed a global bibliographic survey of all the scientific literature retrieved in SCOPUS since 1965, and terminology maps were produced with the VOSviewer software to reveal established and emerging research areas. We produced three term-map plots: term clustering, term citation, and term year. The term clustering network showed three clusters: fishery performance, assessment, and management; biological cycles in growth, reproduction, and behavior; and finally, physiology and ecotoxicology, including food products. The term citation map showed that intense research is developed on ecotoxicology and fishery management. Finally, the term year map showed that the species was first studied in its morphological and physiological aspects and more recently in relation to fishery and as a food resource. Taken together, the results indicate scarce knowledge on how burrowing behavior and its environmental control can alter stock assessment, because of the poor use of current and advanced monitoring technologies.
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19
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Lattuca ME, Vanella FA, Malanga G, Rubel MD, Manríquez PH, Torres R, Alter K, Marras S, Peck MA, Domenici P, Fernández DA. Ocean acidification and seasonal temperature extremes combine to impair the thermal physiology of a sub-Antarctic fish. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159284. [PMID: 36209875 DOI: 10.1016/j.scitotenv.2022.159284] [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: 07/20/2022] [Revised: 09/26/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
To predict the potential impacts of climate change on marine organisms, it is critical to understand how multiple stressors constrain the physiology and distribution of species. We evaluated the effects of seasonal changes in seawater temperature and near-future ocean acidification (OA) on organismal and sub-organismal traits associated with the thermal performance of Eleginops maclovinus, a sub-Antarctic notothenioid species with economic importance to sport and artisanal fisheries in southern South America. Juveniles were exposed to mean winter and summer sea surface temperatures (4 and 10 °C) at present-day and near-future pCO2 levels (~500 and 1800 μatm). After a month, the Critical Thermal maximum and minimum (CTmax, CTmin) of fish were measured using the Critical Thermal Methodology and the aerobic scope of fish was measured based on the difference between their maximal and standard rates determined from intermittent flow respirometry. Lipid peroxidation and the antioxidant capacity were also quantified to estimate the oxidative damage potentially caused to gill and liver tissue. Although CTmax and CTmin were higher in individuals acclimated to summer versus winter temperatures, the increase in CTmax was minimal in juveniles exposed to the near-future compared to present-day pCO2 levels (there was a significant interaction between temperature and pCO2 on CTmax). The reduction in the thermal tolerance range under summer temperatures and near-future OA conditions was associated with a reduction in the aerobic scope observed at the elevated pCO2 level. Moreover, an oxidative stress condition was detected in the gill and liver tissues. Thus, chronic exposure to OA and the current summer temperatures pose limits to the thermal performance of juvenile E. maclovinus at the organismal and sub-organismal levels, making this species vulnerable to projected climate-driven warming.
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Affiliation(s)
- María E Lattuca
- Laboratorio de Ecología, Fisiología y Evolución de Organismos Acuáticos, Centro Austral de Investigaciones Científicas (CADIC-CONICET), Bernardo Houssay 200, V9410BFD Ushuaia, Argentina.
| | - Fabián A Vanella
- Laboratorio de Ecología, Fisiología y Evolución de Organismos Acuáticos, Centro Austral de Investigaciones Científicas (CADIC-CONICET), Bernardo Houssay 200, V9410BFD Ushuaia, Argentina
| | - Gabriela Malanga
- Fisicoquímica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires (FFyB - UBA), Junín 956, C1113AAD CABA, Argentina; Instituto de Bioquímica y Medicina Molecular (IBIMOL - CONICET), Junín 956, C1113AAD CABA, Argentina
| | - Maximiliano D Rubel
- Laboratorio de Ecología, Fisiología y Evolución de Organismos Acuáticos, Centro Austral de Investigaciones Científicas (CADIC-CONICET), Bernardo Houssay 200, V9410BFD Ushuaia, Argentina
| | - Patricio H Manríquez
- Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Av. Bernardo Ossandón 877, 1781681 Coquimbo, Chile; Laboratorio de Ecología y Conducta de la Ontogenia Temprana (LECOT), Larrondo 1281, 1781421 Coquimbo, Chile
| | - Rodrigo Torres
- Centro de Investigación en Ecosistemas de la Patagonia (CIEP), José de Moraleda 16, 5951369 Coyhaique, Chile; Centro de Investigación Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Av. El Bosque 01789, 6200000 Punta Arenas, Chile
| | - Katharina Alter
- Royal Netherlands Institute for Sea Research (NIOZ), Department of Coastal Systems (COS), P.O. Box 59, 1790 AB Den Burg, Texel, the Netherlands
| | - Stefano Marras
- Consiglio Nazionale delle Ricerche, Istituto per l'Ambiente Marino Costiero (CNR-IAMC), Località Sa Mardini, 09070 Torregrande, Oristano, Italy
| | - Myron A Peck
- Royal Netherlands Institute for Sea Research (NIOZ), Department of Coastal Systems (COS), P.O. Box 59, 1790 AB Den Burg, Texel, the Netherlands
| | - Paolo Domenici
- Consiglio Nazionale delle Ricerche, Istituto per l'Ambiente Marino Costiero (CNR-IAMC), Località Sa Mardini, 09070 Torregrande, Oristano, Italy; Consiglio Nazionale delle Ricerche, Istituto di Biofisica (CNR-IBF), Area di Ricerca San Cataldo, Via G. Moruzzi N°1, 56124 Pisa, Italy
| | - Daniel A Fernández
- Laboratorio de Ecología, Fisiología y Evolución de Organismos Acuáticos, Centro Austral de Investigaciones Científicas (CADIC-CONICET), Bernardo Houssay 200, V9410BFD Ushuaia, Argentina; Universidad Nacional de Tierra del Fuego, Instituto de Ciencias Polares, Ambiente y Recursos Naturales (UNTDF - ICPA), Fuegia Basket 251, V9410BXE Ushuaia, Argentina
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20
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Paula JR, Cascalheira L, Oliveira R, Otjacques E, Frazão-Santos C, Beldade R, Mills SC, Rosa R. GABAergic role in the disruption of wild cleaner fish behaviour under high CO2. Anim Behav 2023. [DOI: 10.1016/j.anbehav.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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Spatafora D, Cattano C, Aglieri G, Quattrocchi F, Turco G, Quartararo G, Dudemaine J, Calosi P, Milazzo M. Limited behavioural effects of ocean acidification on a Mediterranean anemone goby (Gobius incognitus) chronically exposed to elevated CO 2 levels. MARINE ENVIRONMENTAL RESEARCH 2022; 181:105758. [PMID: 36183457 DOI: 10.1016/j.marenvres.2022.105758] [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: 02/24/2022] [Revised: 09/15/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
An in situ reciprocal transplant experiment was carried around a volcanic CO2 vent to evaluate the anti-predator responses of an anemone goby species exposed to ambient (∼380 μatm) and high (∼850 μatm) CO2 sites. Overall, the anemone gobies displayed largely unaffected behaviors under high-CO2 conditions suggesting an adaptive potential of Gobius incognitus to ocean acidification (OA) conditions. This is also supported by its 3-fold higher density recorded in the field under high CO2. However, while fish exposed to ambient conditions showed an expected reduction in the swimming activity in the proximity of the predator between the pre- and post-exposure period, no such changes were detected in any of the other treatments where fish experienced acute and long-term high CO2. This may suggest an OA effect on the goby antipredator strategy. Our findings contribute to the ongoing debate over the need for realistic predictions of the impacts of expected increased CO2 concentration on fish, providing evidence from a natural high CO2 system.
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Affiliation(s)
- Davide Spatafora
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, Via Archirafi 28, I-90123, Palermo, Italy; Shimoda Marine Research Centre, Tsukuba University, Shimoda City, Shizuoka 415-0025, Japan.
| | - Carlo Cattano
- Department of Integrative Marine Ecology, Sicily, Stazione Zoologica Anton Dohrn, Lungomare Cristoforo Colombo (complesso Roosevelt), 90149, Palermo, Italy
| | - Giorgio Aglieri
- Department of Integrative Marine Ecology, Sicily, Stazione Zoologica Anton Dohrn, Lungomare Cristoforo Colombo (complesso Roosevelt), 90149, Palermo, Italy
| | - Federico Quattrocchi
- Institute for Marine Biological Resources and Biotechnology (IRBIM), National Research Council CNR, Mazara del Vallo (TP), Italy
| | - Gabriele Turco
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, Via Archirafi 28, I-90123, Palermo, Italy
| | - Giulia Quartararo
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, Via Archirafi 28, I-90123, Palermo, Italy
| | - Jeanne Dudemaine
- Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, Rimouski, Québec, Canada
| | - Piero Calosi
- Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, Rimouski, Québec, Canada
| | - Marco Milazzo
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, Via Archirafi 28, I-90123, Palermo, Italy
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22
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Dahlke F, Puvanendran V, Mortensen A, Pörtner HO, Storch D. Broodstock exposure to warming and elevated pCO 2 impairs gamete quality and narrows the temperature window of fertilisation in Atlantic cod. JOURNAL OF FISH BIOLOGY 2022; 101:822-833. [PMID: 35737847 DOI: 10.1111/jfb.15140] [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: 08/05/2021] [Accepted: 04/09/2022] [Indexed: 06/15/2023]
Abstract
Impacts of global warming and CO2 -related ocean acidification (OA) on fish reproduction may include chronic effects on gametogenesis and gamete quality, as well as acute effects on external fertilisation. Here, temperature thresholds and OA-sensitivity of gametogenesis and fertilisation were investigated in Atlantic cod, Gadus morhua. Three broodstock groups of farmed cod (FC 1-3) were exposed for 3 months to three maturation conditions (FC 1: control, 6°C/400 μatm CO2 ; FC 2: warming, 9.5°C/400 μatm; FC 3: warming and OA, 9.5°C/1100 μatm). In addition, a broodstock group of wild cod (WC) was kept at control conditions to compare the acute temperature window of fertilisation with that of farmed cod (FC 1). Fertilisations were conducted in a temperature-gradient table at 10 temperatures (between -1.5 and 12°C) and two CO2 levels (400/1100 μatm). In FC 1 and WC, fertilisation success was relatively high between 0.5°C and 11°C (TRange of c. 10.5°C), indicating similar gamete quality in farmed and wild broodstocks kept at control conditions. Exposure of farmed broodstocks to warming (FC 2) and the combination of warming and OA (FC 3) impaired gamete quality, causing a reduction in fertilisation success of -20% (FC 2) and - 42% (FC 3) compared to FC 1. The acute temperature window of fertilisation narrowed from FC 1 (TRange = 10.4°C) to FC 2 (TRange = 8.8°C) and FC 3 (TRange = 5.9°C). Acute effects of CO2 on fertilisation success were not significant. This study demonstrates potential climate change impacts on gametogenesis and fertilisation in Atlantic cod, suggesting the loss of spawning habitat in the coming decades.
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Affiliation(s)
- Flemming Dahlke
- Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, Germany
| | | | | | - Hans-Otto Pörtner
- Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, Germany
- Department of Biology and Chemistry, University of Bremen, Bremen, Germany
| | - Daniela Storch
- Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, Germany
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23
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Siegel KR, Kaur M, Grigal AC, Metzler RA, Dickinson GH. Meta-analysis suggests negative, but pCO 2-specific, effects of ocean acidification on the structural and functional properties of crustacean biomaterials. Ecol Evol 2022; 12:e8922. [PMID: 35784075 PMCID: PMC9165209 DOI: 10.1002/ece3.8922] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/23/2022] [Accepted: 04/25/2022] [Indexed: 12/02/2022] Open
Abstract
Crustaceans comprise an ecologically and morphologically diverse taxonomic group. They are typically considered resilient to many environmental perturbations found in marine and coastal environments, due to effective physiological regulation of ions and hemolymph pH, and a robust exoskeleton. Ocean acidification can affect the ability of marine calcifying organisms to build and maintain mineralized tissue and poses a threat for all marine calcifying taxa. Currently, there is no consensus on how ocean acidification will alter the ecologically relevant exoskeletal properties of crustaceans. Here, we present a systematic review and meta-analysis on the effects of ocean acidification on the crustacean exoskeleton, assessing both exoskeletal ion content (calcium and magnesium) and functional properties (biomechanical resistance and cuticle thickness). Our results suggest that the effect of ocean acidification on crustacean exoskeletal properties varies based upon seawater pCO2 and species identity, with significant levels of heterogeneity for all analyses. Calcium and magnesium content was significantly lower in animals held at pCO2 levels of 1500-1999 µatm as compared with those under ambient pCO2. At lower pCO2 levels, however, statistically significant relationships between changes in calcium and magnesium content within the same experiment were observed as follows: a negative relationship between calcium and magnesium content at pCO2 of 500-999 µatm and a positive relationship at 1000-1499 µatm. Exoskeleton biomechanics, such as resistance to deformation (microhardness) and shell strength, also significantly decreased under pCO2 regimes of 500-999 µatm and 1500-1999 µatm, indicating functional exoskeletal change coincident with decreases in calcification. Overall, these results suggest that the crustacean exoskeleton can be susceptible to ocean acidification at the biomechanical level, potentially predicated by changes in ion content, when exposed to high influxes of CO2. Future studies need to accommodate the high variability of crustacean responses to ocean acidification, and ecologically relevant ranges of pCO2 conditions, when designing experiments with conservation-level endpoints.
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Affiliation(s)
- Kyle R. Siegel
- Department of BiologyThe College of New JerseyEwingNew JerseyUSA
| | - Muskanjot Kaur
- Department of BiologyThe College of New JerseyEwingNew JerseyUSA
| | - A. Calvin Grigal
- Department of BiologyThe College of New JerseyEwingNew JerseyUSA
| | - Rebecca A. Metzler
- Department of Physics and AstronomyColgate UniversityHamiltonNew YorkUSA
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24
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Hu N, Bourdeau PE, Harlos C, Liu Y, Hollander J. Meta-analysis reveals variance in tolerance to climate change across marine trophic levels. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 827:154244. [PMID: 35245550 DOI: 10.1016/j.scitotenv.2022.154244] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 02/23/2022] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
Marine ecosystems are currently facing a variety of anthropogenic perturbations, including climate change. Trophic differences in response to climate change may disrupt ecological interactions and thereby threaten marine ecosystem function. Yet, we still do not have a comprehensive understanding of how different trophic levels respond to climate change stressors in marine ecosystems. By including 1278 experiments, comprising 236 different marine species from 18 different phyla in a meta-analysis of studies measuring the direct effect of ocean acidification and ocean warming on marine organisms, we found that higher trophic level species display greater tolerance to ocean acidification but greater sensitivity to warming. In contrast, marine herbivores were the most vulnerable trophic level to both acidification and warming. Such imbalances in the community and a general reduction of biodiversity and biomass in lower trophic levels can significantly disrupt the system and could drive negative bottom-up effects. In conclusion, with ocean acidification and elevated temperatures, there is an alarming risk that trophic disparity may disrupt species interactions, and thereby drive community destabilization under ocean climate change.
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Affiliation(s)
- Nan Hu
- Department of Biology- Aquatic ecology, Lund University, Lund, Sweden
| | - Paul E Bourdeau
- Department of Biological Sciences, Humboldt State University, Arcata, CA, USA
| | - Christian Harlos
- Department of Biology- Aquatic ecology, Lund University, Lund, Sweden
| | - Ying Liu
- Department of Biology- Aquatic ecology, Lund University, Lund, Sweden; Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
| | - Johan Hollander
- Sasakawa Global Ocean Institute, World Maritime University, Malmö, Sweden.
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25
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Sganga DE, Dahlke FT, Sørensen SR, Butts IAE, Tomkiewicz J, Mazurais D, Servili A, Bertolini F, Politis SN. CO2 induced seawater acidification impacts survival and development of European eel embryos. PLoS One 2022; 17:e0267228. [PMID: 35436318 PMCID: PMC9015118 DOI: 10.1371/journal.pone.0267228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 04/04/2022] [Indexed: 11/18/2022] Open
Abstract
Fish embryos may be vulnerable to seawater acidification resulting from anthropogenic carbon dioxide (CO2) emissions or from excessive biological CO2 production in aquaculture systems. This study investigated CO2 effects on embryos of the European eel (Anguilla anguilla), a catadromous fish that is considered at risk from climate change and that is targeted for hatchery production to sustain aquaculture of the species. Eel embryos were reared in three independent recirculation systems with different pH/CO2 levels representing “control” (pH 8.1, 300 μatm CO2), end-of-century climate change (“intermediate”, pH 7.6, 900 μatm CO2) and “extreme” aquaculture conditions (pH 7.1, 3000 μatm CO2). Sensitivity analyses were conducted at 4, 24, and 48 hours post-fertilization (hpf) by focusing on development, survival, and expression of genes related to acute stress response (crhr1, crfr2), stress/repair response (hsp70, hsp90), water and solute transport (aqp1, aqp3), acid-base regulation (nkcc1a, ncc, car15), and inhibitory neurotransmission (GABAAα6b, Gabra1). Results revealed that embryos developing at intermediate pH showed similar survival rates to the control, but egg swelling was impaired, resulting in a reduction in egg size with decreasing pH. Embryos exposed to extreme pH had 0.6-fold decrease in survival at 24 hpf and a 0.3-fold change at 48 compared to the control. These observed effects of acidification were not reflected by changes in expression of any of the here studied genes. On the contrary, differential expression was observed along embryonic development independent of treatment, indicating that the underlying regulating systems are under development and that embryos are limited in their ability to regulate molecular responses to acidification. In conclusion, exposure to predicted end-of-century ocean pCO2 conditions may affect normal development of this species in nature during sensitive early life history stages with limited physiological response capacities, while extreme acidification will negatively influence embryonic survival and development under hatchery conditions.
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Affiliation(s)
- Daniela E. Sganga
- National Institute of Aquatic Resources, Technical University of Denmark, Kgs. Lyngby, Denmark
- * E-mail:
| | | | - Sune R. Sørensen
- National Institute of Aquatic Resources, Technical University of Denmark, Kgs. Lyngby, Denmark
- Billund Aquaculture, Billund, Denmark
| | - Ian A. E. Butts
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, Alabama, United States of America
| | - Jonna Tomkiewicz
- National Institute of Aquatic Resources, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - David Mazurais
- CNRS, IRD, LEMAR, Ifremer, Université de Brest, Plouzané, France
| | - Arianna Servili
- CNRS, IRD, LEMAR, Ifremer, Université de Brest, Plouzané, France
| | - Francesca Bertolini
- National Institute of Aquatic Resources, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Sebastian N. Politis
- National Institute of Aquatic Resources, Technical University of Denmark, Kgs. Lyngby, Denmark
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26
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Howald S, Moyano M, Crespel A, Kuchenmüller LL, Cominassi L, Claireaux G, Peck MA, Mark FC. Effects of Ocean Acidification over successive generations decrease larval resilience to Ocean Acidification & Warming but juvenile European sea bass could benefit from higher temperatures in the NE Atlantic. J Exp Biol 2022; 225:275035. [PMID: 35417012 DOI: 10.1242/jeb.243802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 04/01/2022] [Indexed: 11/20/2022]
Abstract
European sea bass (Dicentrarchus labrax) is a large, economically important fish species with a long generation time whose long-term resilience to ocean acidification (OA) and warming (OW) is not clear. We incubated sea bass from Brittany (France) for two generations (>5 years in total) under ambient and predicted OA conditions (PCO2: 650 and 1700 µatm) crossed with ambient and predicted ocean OW conditions in F1 (temperature: 15-18°C and 20-23°C) to investigate the effects of climate change on larval and juvenile growth and metabolic rate. We found that in F1, OA as single stressor at ambient temperature did not affect larval or juvenile growth and OW increased developmental time and growth rates, but OAW decreased larval size at metamorphosis. Larval routine and juvenile standard metabolic rates were significantly lower in cold compared to warm conditioned fish and also lower in F0 compared to F1 fish. We did not find any effect of OA as a single stressor on metabolic rates. Juvenile PO2crit was not affected by OA or OAW in both generations. We discuss the potential underlying mechanisms resulting in the resilience of F0 and F1 larvae and juveniles to OA and in the beneficial effects of OW on F1 larval growth and metabolic rate, but on the other hand in the vulnerability of F1, but not F0 larvae to OAW. With regard to the ecological perspective, we conclude that recruitment of larvae and early juveniles to nursery areas might decrease under OAW conditions but individuals reaching juvenile phase might benefit from increased performance at higher temperatures.
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Affiliation(s)
- Sarah Howald
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Integrative Ecophysiology, Bremerhaven, Germany.,Institute of Marine Ecosystem and Fisheries Science, Center for Earth System Research and Sustainability (CEN), University of Hamburg, Germany
| | - Marta Moyano
- Institute of Marine Ecosystem and Fisheries Science, Center for Earth System Research and Sustainability (CEN), University of Hamburg, Germany.,Center for Coastal Research, University of Agder, Postbox 422, 4604 Kristiansand, Norway
| | - Amélie Crespel
- Ifremer, LEMAR (UMR 6539), Laboratory of Adaptation, and Nutrition of Fish, Centre Ifremer de Bretagne, Plouzané, France
| | - Luis L Kuchenmüller
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Integrative Ecophysiology, Bremerhaven, Germany
| | - Louise Cominassi
- Institute of Marine Ecosystem and Fisheries Science, Center for Earth System Research and Sustainability (CEN), University of Hamburg, Germany.,Institute of Arctic Biology, University of Alaska, Fairbanks, PO Box 757000, Fairbanks, AK 99775, USA
| | - Guy Claireaux
- Université de Bretagne Occidentale, LEMAR (UMR 6539), Brest, France.,Ifremer, LEMAR (UMR 6539), Laboratory of Adaptation, and Nutrition of Fish, Centre Ifremer de Bretagne, Plouzané, France
| | - Myron A Peck
- Institute of Marine Ecosystem and Fisheries Science, Center for Earth System Research and Sustainability (CEN), University of Hamburg, Germany.,Coastal Systems (COS), Royal Netherlands Institute for Sea Research (NIOZ), Netherlands
| | - Felix C Mark
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Integrative Ecophysiology, Bremerhaven, Germany
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27
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Green SJ, Brookson CB, Hardy NA, Crowder LB. Trait-based approaches to global change ecology: moving from description to prediction. Proc Biol Sci 2022; 289:20220071. [PMID: 35291837 PMCID: PMC8924753 DOI: 10.1098/rspb.2022.0071] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/09/2022] [Indexed: 11/13/2022] Open
Abstract
Trait-based approaches are increasingly recognized as a tool for understanding ecosystem re-assembly and function under intensifying global change. Here we synthesize trait-based research globally (n = 865 studies) to examine the contexts in which traits may be used for global change prediction. We find that exponential growth in the field over the last decade remains dominated by descriptive studies of terrestrial plant morphology, highlighting significant opportunities to expand trait-based thinking across systems and taxa. Very few studies (less than 3%) focus on predicting ecological effects of global change, mostly in the past 5 years and via singular traits that mediate abiotic limits on species distribution. Beyond organism size (the most examined trait), we identify over 2500 other morphological, physiological, behavioural and life-history traits known to mediate environmental filters of species' range and abundance as candidates for future predictive global change work. Though uncommon, spatially explicit process models-which mechanistically link traits to changes in organism distributions and abundance-are among the most promising frameworks for holistic global change prediction at scales relevant for conservation decision-making. Further progress towards trait-based forecasting requires addressing persistent barriers including (1) matching scales of multivariate trait and environment data to focal processes disrupted by global change, and (2) propagating variation in trait and environmental parameters throughout process model functions using simulation.
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Affiliation(s)
- Stephanie J. Green
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Cole B. Brookson
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Natasha A. Hardy
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
- Hopkins Marine Station of Stanford University, Pacific Grove, CA 93950, USA
| | - Larry B. Crowder
- Hopkins Marine Station of Stanford University, Pacific Grove, CA 93950, USA
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28
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Effects of Seawater Acidification on Echinoid Adult Stage: A Review. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2022. [DOI: 10.3390/jmse10040477] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The continuous release of CO2 in the atmosphere is increasing the acidity of seawater worldwide, and the pH is predicted to be reduced by ~0.4 units by 2100. Ocean acidification (OA) is changing the carbonate chemistry, jeopardizing the life of marine organisms, and in particular calcifying organisms. Because of their calcareous skeleton and limited ability to regulate the acid–base balance, echinoids are among the organisms most threatened by OA. In this review, 50 articles assessing the effects of seawater acidification on the echinoid adult stage have been collected and summarized, in order to identify the most important aspects to consider for future experiments. Most of the endpoints considered (i.e., related to calcification, physiology, behaviour and reproduction) were altered, highlighting how various and subtle the effects of pH reduction can be. In general terms, more than 43% of the endpoints were modified by low pH compared with the control condition. However, animals exposed in long-term experiments or resident in CO2-vent systems showed acclimation capability. Moreover, the latitudinal range of animals’ distribution might explain some of the differences found among species. Therefore, future experiments should consider local variability, long-term exposure and multigenerational approaches to better assess OA effects on echinoids.
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29
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Ecological and Biotechnological Relevance of Mediterranean Hydrothermal Vent Systems. MINERALS 2022. [DOI: 10.3390/min12020251] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Marine hydrothermal systems are a special kind of extreme environments associated with submarine volcanic activity and characterized by harsh chemo-physical conditions, in terms of hot temperature, high concentrations of CO2 and H2S, and low pH. Such conditions strongly impact the living organisms, which have to develop adaptation strategies to survive. Hydrothermal systems have attracted the interest of researchers due to their enormous ecological and biotechnological relevance. From ecological perspective, these acidified habitats are useful natural laboratories to predict the effects of global environmental changes, such as ocean acidification at ecosystem level, through the observation of the marine organism responses to environmental extremes. In addition, hydrothermal vents are known as optimal sources for isolation of thermophilic and hyperthermophilic microbes, with biotechnological potential. This double aspect is the focus of this review, which aims at providing a picture of the ecological features of the main Mediterranean hydrothermal vents. The physiological responses, abundance, and distribution of biotic components are elucidated, by focusing on the necto-benthic fauna and prokaryotic communities recognized to possess pivotal role in the marine ecosystem dynamics and as indicator species. The scientific interest in hydrothermal vents will be also reviewed by pointing out their relevance as source of bioactive molecules.
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30
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Spatafora D, Quattrocchi F, Cattano C, Badalamenti F, Milazzo M. Nest guarding behaviour of a temperate wrasse differs between sites off Mediterranean CO 2 seeps. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 799:149376. [PMID: 34375865 DOI: 10.1016/j.scitotenv.2021.149376] [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: 01/30/2021] [Revised: 07/08/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
Organisms may respond to changing environmental conditions by adjusting their behaviour (i.e., behavioural plasticity). Ocean acidification (OA), resulting from anthropogenic emissions of carbon dioxide (CO2), is predicted to impair sensory function and behaviour of fish. However, reproductive behaviours, and parental care in particular, and their role in mediating responses to OA are presently overlooked. Here, we assessed whether the nesting male ocellated wrasse Symphodus ocellatus from sites with different CO2 concentrations showed different behaviours during their breeding season. We also investigated potential re-allocation of the time-budget towards different behavioural activities between sites. We measured the time period that the nesting male spent carrying out parental care, mating and exploring activities, as well as changes in the time allocation between sites at ambient (~400 μatm) and high CO2 concentrations (~1000 μatm). Whilst the behavioural connectance (i.e., the number of linkages among different behaviours relative to the total amount of linkages) was unaffected, we observed a significant reduction in the time spent on parental care behaviour, and a significant decrease in the guarding activity of fish at the high CO2 sites, with a proportional re-allocation of the time budget in favour of courting and wandering around, which however did not change between sites. This study shows behavioural differences in wild fish living off volcanic CO2 seeps that could be linked to different OA levels, suggesting that behavioural plasticity may potentially act as a mechanism for buffering the effects of ongoing environmental change. A reallocation of the time budget between key behaviours may play a fundamental role in determining which marine organisms are thriving under projected OA.
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Affiliation(s)
- Davide Spatafora
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, Palermo, Italy.
| | - Federico Quattrocchi
- Institute for Marine Biological Resources and Biotechnology (IRBIM), National Research Council CNR, Mazara del Vallo, TP, Italy
| | - Carlo Cattano
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Lungomare Cristoforo Colombo (complesso Roosevelt), 90149 Palermo, Italy
| | - Fabio Badalamenti
- CNR-IAS, Institute for the study of Anthropic Impacts and Sustainability of the Marine Environment, Via G. da Verrazzano 17, 91014 Castellammare del Golfo, TP, Italy
| | - Marco Milazzo
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, Palermo, Italy
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31
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Monroe AA, Schunter C, Welch MJ, Munday PL, Ravasi T. Molecular basis of parental contributions to the behavioural tolerance of elevated pCO 2 in a coral reef fish. Proc Biol Sci 2021; 288:20211931. [PMID: 34875194 PMCID: PMC8651409 DOI: 10.1098/rspb.2021.1931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 11/15/2021] [Indexed: 12/27/2022] Open
Abstract
Knowledge of adaptive potential is crucial to predicting the impacts of ocean acidification (OA) on marine organisms. In the spiny damselfish, Acanthochromis polyacanthus, individual variation in behavioural tolerance to elevated pCO2 has been observed and is associated with offspring gene expression patterns in the brain. However, the maternal and paternal contributions of this variation are unknown. To investigate parental influence of behavioural pCO2 tolerance, we crossed pCO2-tolerant fathers with pCO2-sensitive mothers and vice versa, reared their offspring at control and elevated pCO2 levels, and compared the juveniles' brain transcriptional programme. We identified a large influence of parental phenotype on expression patterns of offspring, irrespective of environmental conditions. Circadian rhythm genes, associated with a tolerant parental phenotype, were uniquely expressed in tolerant mother offspring, while tolerant fathers had a greater role in expression of genes associated with histone binding. Expression changes in genes associated with neural plasticity were identified in both offspring types: the maternal line had a greater effect on genes related to neuron growth while paternal influence impacted the expression of synaptic development genes. Our results confirm cellular mechanisms involved in responses to varying lengths of OA exposure, while highlighting the parental phenotype's influence on offspring molecular phenotype.
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Affiliation(s)
- Alison A. Monroe
- Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Marine Genomics Laboratory, Department of Life Sciences, Texas A&M University Corpus Christi, Corpus Christi, TX 78412, USA
| | - Celia Schunter
- Swire Institute of Marine Science, The School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong SAR
| | - Megan J. Welch
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Australia
| | - Philip L. Munday
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Australia
| | - Timothy Ravasi
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Australia
- Marine Climate Change Unit, Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
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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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Schunter C, Jarrold MD, Munday PL, Ravasi T. Diel pCO 2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions. Mol Ecol 2021; 30:5105-5118. [PMID: 34402113 DOI: 10.1111/mec.16124] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 08/02/2021] [Accepted: 08/11/2021] [Indexed: 12/26/2022]
Abstract
Environmental partial pressure of CO2 (pCO2 ) variation can modify the responses of marine organisms to ocean acidification, yet the underlying mechanisms for this effect remain unclear. On coral reefs, environmental pCO2 fluctuates on a regular day-night cycle. Effects of future ocean acidification on coral reef fishes might therefore depend on their response to this diel cycle of pCO2 . To evaluate the effects on the brain molecular response, we exposed two common reef fishes (Acanthochromis polyacanthus and Amphiprion percula) to two projected future pCO2 levels (750 and 1,000 µatm) under both stable and diel fluctuating conditions. We found a common signature to stable elevated pCO2 for both species, which included the downregulation of immediate early genes, indicating lower brain activity. The transcriptional programme was more strongly affected by higher average pCO2 in a stable treatment than for fluctuating treatments, but the largest difference in molecular response was between stable and fluctuating pCO2 treatments. This indicates that a response to a change in environmental pCO2 conditions is different for organisms living in a fluctuating than in stable environments. This differential regulation was related to steroid hormones and circadian rhythm (CR). Both species exhibited a marked difference in the expression of CR genes among pCO2 treatments, possibly accommodating a more flexible adaptive approach in the response to environmental changes. Our results suggest that environmental pCO2 fluctuations might enable reef fishes to phase-shift their clocks and anticipate pCO2 changes, thereby avoiding impairments and more successfully adjust to ocean acidification conditions.
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Affiliation(s)
- Celia Schunter
- Swire Institute of Marine Science, School of Biological Sciences, The University of Hong Kong, Pok Fu Lam, Hong Kong SAR
| | - Michael D Jarrold
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
| | - Philip L Munday
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
| | - Timothy Ravasi
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia.,Marine Climate Change Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
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Khalsa NS, Gatt KP, Sutton TM, Kelley AL. Characterization of the abiotic drivers of abundance of nearshore Arctic fishes. Ecol Evol 2021; 11:11491-11506. [PMID: 34429935 PMCID: PMC8366885 DOI: 10.1002/ece3.7940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 06/29/2021] [Accepted: 07/08/2021] [Indexed: 11/15/2022] Open
Abstract
Fish are critical ecologically and socioeconomically for subsistence economies in the Arctic, an ecosystem undergoing unprecedented environmental change. Our understanding of the responses of nearshore Arctic fishes to environmental change is inadequate because of limited research on the physicochemical drivers of abundance occurring at a fine scale. Here, high-frequency in situ measurements of pH, temperature, salinity, and dissolved oxygen were paired with daily fish catches in nearshore Alaskan waters of the Beaufort Sea. Due to the threat that climate change poses to high-latitude marine ecosystems, our main objective was to characterize the abiotic drivers of abundance and elucidate how nearshore fish communities may change in the future. We used generalized additive models (GAMs) to describe responses to the nearshore environment for 18 fish species. Relationships between abundance and the physicochemical environment were variable between species and reflected life history. Each abiotic covariate was significant in at least one GAM, exhibiting both nonlinear and linear associations with abundance. Temperature was the most important predictor of abundance and was significant in GAMs for 11 species. Notably, pH was a significant predictor of abundance for six species: Arctic cod (Boreogadus saida), broad whitefish (Coregonus nasus), Dolly Varden (Salvelinus malma), ninespine stickleback (Pungitius pungitius), saffron cod (Eleginus gracilis), and whitespotted greenling (Hexagrammos stelleri). Broad whitefish and whitespotted greenling abundance was positively associated with pH, while Arctic cod and saffron cod abundance was negatively associated with pH. These results may be a bellwether for future nearshore Arctic fish community change by providing a foundational characterization of the relationships between abundance and the abiotic environment, particularly in regard to pH, and demonstrate the importance of including a wider range of physicochemical habitat covariates in future research.
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Affiliation(s)
- Noah S. Khalsa
- School of Marine and Atmospheric SciencesStony Brook UniversityStony BrookNYUSA
- College of Fisheries and Ocean SciencesUniversity of Alaska FairbanksFairbanksAlaskaUSA
| | - Kyle P. Gatt
- College of Fisheries and Ocean SciencesUniversity of Alaska FairbanksFairbanksAlaskaUSA
| | - Trent M. Sutton
- College of Fisheries and Ocean SciencesUniversity of Alaska FairbanksFairbanksAlaskaUSA
| | - Amanda L. Kelley
- College of Fisheries and Ocean SciencesUniversity of Alaska FairbanksFairbanksAlaskaUSA
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Léger JAD, Athanasio CG, Zhera A, Chauhan MF, Simmons DBD. Hypoxic responses in Oncorhynchus mykiss involve angiogenesis, lipid, and lactate metabolism, which may be triggered by the cortisol stress response and epigenetic methylation. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2021; 39:100860. [PMID: 34126312 DOI: 10.1016/j.cbd.2021.100860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 05/14/2021] [Accepted: 06/01/2021] [Indexed: 10/21/2022]
Abstract
The incidence of hypoxia in water bodies is increasing more rapidly than aquatic life can adapt. This study aimed to determine the effects of hypoxia on fish physiology, as well as protein expression through proteomics. To do this, 40 rainbow trout were divided into normoxic control (11.5 mg/L dissolved oxygen) and hypoxic treatment (5 mg/L dissolved oxygen) tanks for a period of 7 days. Fish were then anesthetized and blood was sampled. Fish were then euthanized and heart and liver samples were taken. Blood glucose, cortisol and lipid, body and liver mass, fork length, hematocrit and, blood cell counts and global heart methylation were measured. Red blood cell counts were significantly lower, while hematocrit and mean corpuscular volume were significantly higher in the hypoxic treatment. Global DNA methylation was significantly decreased in hypoxic heart tissue. Plasma cortisol and 18:1 monoacylglyerol increased, while 15:0-18:1 phosphatidylethanolamine, and 18:1 lysophosphatidylethanolamine decreased in plasma of rainbow trout under hypoxic conditions. Plasma proteomics revealed 70 significantly altered proteins (p < 0.05) in the hypoxia treatment (Data are available via ProteomeXchange with identifier PXD026589). Many of these molecular changes appear to be related to the observed increase in red blood cell volume and epigenetic modifications, as well as to angiogenesis, lipid, and glucose metabolism. This study highlights a range of cellular and molecular responses in the blood and plasma of freshwater fish that may be phenotypic adaptions to hypoxia, and that could aid in diagnosing the health status of wild fish populations using several, potential, discovered biomarkers.
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Affiliation(s)
- Jessica A D Léger
- University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1G 0C5, Canada.
| | - Camila G Athanasio
- University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1G 0C5, Canada
| | - Aaleen Zhera
- University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1G 0C5, Canada.
| | - Mohammed Faiz Chauhan
- University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1G 0C5, Canada.
| | - Denina B D Simmons
- University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1G 0C5, Canada.
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Mirasole A, Badalamenti F, Di Franco A, Gambi MC, Teixidó N. Boosted fish abundance associated with Posidonia oceanica meadows in temperate shallow CO 2 vents. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 771:145438. [PMID: 33548697 DOI: 10.1016/j.scitotenv.2021.145438] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/17/2021] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
Ocean acidification (OA) may induce major shifts in the structure and function of coastal marine ecosystems. Studies in volcanic CO2 vents, where seawater is naturally acidified, have reported an overall simplification of fish assemblages structure, while some primary producers are likely to increase their biomass under elevated concentration of CO2. Here we used temperate shallow CO2 vents located around the coast of Ischia island (Italy) to assess the effects of OA on necto-benthic fish assemblages associated with the foundation seagrass species Posidonia oceanica in the Mediterranean Sea. We compared P. oceanica meadow structure, its epiphytic community and the associated fish assemblage structure and diversity at vents with low pH sites and reference sites with ambient pH using underwater visual census strip transects, in two seasons (fall 2018 and summer 2019). Data were analysed using both univariate and multivariate statistical techniques. Results showed greater P. oceanica habitat complexity (i.e. shoot density) and lower abundance of epiphytic calcareous species (e.g. coralline algae) at the vents than reference sites. Total abundance of adult and juvenile fish was higher at vents than reference sites, while no differences were found for species richness and composition. Overall, the herbivore Sarpa salpa stands out among the species contributing the most to dissimilarity between vents and reference sites, showing higher abundances under OA conditions. This pattern could be explained by the combined effect of a positive response to the higher structural meadows complexity and the greater seagrasses palatability/nutritional value occurring at the vents, which may help herbivores to withstand the higher energetic cost to live under high pCO2/low pH conditions. Our results indicate that necto-benthic fish assemblages associated with the Mediterranean P. oceanica ecosystem may cope with OA under the CO2 emission scenarios forecasted for the end of this century.
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Affiliation(s)
- Alice Mirasole
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Ischia Marine Centre, Punta San Pietro, 80077 Ischia, Naples, Italy.
| | - Fabio Badalamenti
- CNR-IAS, Lungomare Cristoforo Colombo 4521, 90149 Palermo, Italy; Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Lungomare Cristoforo Colombo (complesso Roosevelt), 90149 Palermo, Italy
| | - Antonio Di Franco
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Lungomare Cristoforo Colombo (complesso Roosevelt), 90149 Palermo, Italy
| | - Maria Cristina Gambi
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Ischia Marine Centre, Punta San Pietro, 80077 Ischia, Naples, Italy
| | - Nuria Teixidó
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Ischia Marine Centre, Punta San Pietro, 80077 Ischia, Naples, Italy; Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, 181 chemin du Lazaret, Villefranche-sur-mer 06230, France
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Mirasole A, Scopelliti G, Tramati C, Signa G, Mazzola A, Vizzini S. Evidences on alterations in skeleton composition and mineralization in a site-attached fish under naturally acidified conditions in a shallow CO 2 vent. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 761:143309. [PMID: 33172632 DOI: 10.1016/j.scitotenv.2020.143309] [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: 07/24/2020] [Revised: 10/02/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Ocean acidification may affect fish mineralized structures (i.e. otoliths and skeleton). METHODS Here, we compared the elemental composition of muscle and skeleton and the mineral features of skeleton in the site-attached fish Gobius bucchichi naturally exposed to high pCO2/low pH conditions in a shallow CO2 vent with fish of the same species exposed to normal pH. RESULTS Overall, no skeleton malformations were found in both pH conditions, but among-site differences were found in the elemental composition. Interestingly, higher Ca/P values, inducing a moderate skeleton maturation, were found in fish exposed to acidified conditions than in controls. CONCLUSION Our findings suggest that ocean acidification may play a significant role in physiological processes related to mineralization, fostering skeleton pre-aging.
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Affiliation(s)
- Alice Mirasole
- Department of Integrative Marine Ecology, Ischia Marine Centre, Stazione Zoologica Anton Dohrn, Punta San Pietro 10, 80077 Ischia, Naples, Italy.
| | - Giovanna Scopelliti
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 22, 90123 Palermo, Italy
| | - Cecilia Tramati
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 22, 90123 Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Science, Piazzale Flaminio 9, 00196 Roma, Italy
| | - Geraldina Signa
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 22, 90123 Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Science, Piazzale Flaminio 9, 00196 Roma, Italy
| | - Antonio Mazzola
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 22, 90123 Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Science, Piazzale Flaminio 9, 00196 Roma, Italy
| | - Salvatrice Vizzini
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 22, 90123 Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Science, Piazzale Flaminio 9, 00196 Roma, Italy
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Radford CA, Collins SP, Munday PL, Parsons D. Ocean acidification effects on fish hearing. Proc Biol Sci 2021; 288:20202754. [PMID: 33653144 DOI: 10.1098/rspb.2020.2754] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Humans are rapidly changing the marine environment through a multitude of effects, including increased greenhouse gas emissions resulting in warmer and acidified oceans. Elevated CO2 conditions can cause sensory deficits and altered behaviours in marine organisms, either directly by affecting end organ sensitivity or due to likely alterations in brain chemistry. Previous studies show that auditory-associated behaviours of larval and juvenile fishes can be affected by elevated CO2 (1000 µatm). Here, using auditory evoked potentials (AEP) and micro-computer tomography (microCT) we show that raising juvenile snapper, Chrysophyrs auratus, under predicted future CO2 conditions resulted in significant changes to their hearing ability. Specifically, snapper raised under elevated CO2 conditions had a significant decrease in low frequency (less than 200 Hz) hearing sensitivity. MicroCT demonstrated that these elevated CO2 snapper had sacculus otolith's that were significantly larger and had fluctuating asymmetry, which likely explains the difference in hearing sensitivity. We suggest that elevated CO2 conditions have a dual effect on hearing, directly effecting the sensitivity of the hearing end organs and altering previously described hearing induced behaviours. This is the first time that predicted future CO2 conditions have been empirically linked through modification of auditory anatomy to changes in fish hearing ability. Given the widespread and well-documented impact of elevated CO2 on fish auditory anatomy, predictions of how fish life-history functions dependent on hearing may respond to climate change may need to be reassessed.
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Affiliation(s)
- C A Radford
- Institute of Marine Science, Leigh Marine Laboratory, University of Auckland, PO Box 349, Warkworth 0941, New Zealand
| | - S P Collins
- Institute of Marine Science, Leigh Marine Laboratory, University of Auckland, PO Box 349, Warkworth 0941, New Zealand
| | - P L Munday
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland 4811, Australia
| | - D Parsons
- Institute of Marine Science, Leigh Marine Laboratory, University of Auckland, PO Box 349, Warkworth 0941, New Zealand.,National Institute of Water and Atmosphere, Private Bag 99940, Newmarket, Auckland 1149, New Zealand
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Berlinghieri F, Panizzon P, Penry-Williams IL, Brown C. Laterality and fish welfare - A review. Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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40
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Asnaghi V, Chindris A, Leggieri F, Scolamacchia M, Brundu G, Guala I, Loi B, Chiantore M, Farina S. Decreased pH impairs sea urchin resistance to predatory fish: A combined laboratory-field study to understand the fate of top-down processes in future oceans. MARINE ENVIRONMENTAL RESEARCH 2020; 162:105194. [PMID: 33126114 DOI: 10.1016/j.marenvres.2020.105194] [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: 06/19/2020] [Revised: 10/07/2020] [Accepted: 10/11/2020] [Indexed: 06/11/2023]
Abstract
Changing oceans represent a serious threat for a wide range of marine organisms, with severe cascading effects on ecosystems and their services. Sea urchins are particularly sensitive to decreased pH expected for the end of the century and their key ecological role in regulating community structure and functioning could be seriously compromised. An integrated approach of laboratory and field experiments has been implemented to investigate the effects of decreased pH on predator-prey interaction involving sea urchins and their predators. Our results suggest that under future Ocean Acidification scenarios adult sea urchins defence strategies, such as spine length, test robustness and oral plate thickness, could be compromised together with their survival chance to natural predators. Sea urchins represent the critical linkage between top-down and bottom-up processes along Mediterranean rocky reefs, and the cumulative impacts of global and local stressors could lead to a decline producing cascading effects on benthic ecosystems.
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Affiliation(s)
- V Asnaghi
- DISTAV, University of Genoa, C.so Europa 26, 16132, Genoa, Italy.
| | - A Chindris
- IMC - International Marine Centre, Loc. Sa Mardini, Torre Grande, 09170, Oristano, Italy
| | - F Leggieri
- IMC - International Marine Centre, Loc. Sa Mardini, Torre Grande, 09170, Oristano, Italy; CNR - National Research Council, IAS - Institute of Anthropic Impacts and Sustainability in Marine Environment, Loc. Sa Mardini, Torre Grande, 09170, Oristano, Italy
| | - M Scolamacchia
- IMC - International Marine Centre, Loc. Sa Mardini, Torre Grande, 09170, Oristano, Italy; CNR - National Research Council, IAS - Institute of Anthropic Impacts and Sustainability in Marine Environment, Loc. Sa Mardini, Torre Grande, 09170, Oristano, Italy
| | - G Brundu
- IMC - International Marine Centre, Loc. Sa Mardini, Torre Grande, 09170, Oristano, Italy
| | - I Guala
- IMC - International Marine Centre, Loc. Sa Mardini, Torre Grande, 09170, Oristano, Italy
| | - B Loi
- IMC - International Marine Centre, Loc. Sa Mardini, Torre Grande, 09170, Oristano, Italy
| | - M Chiantore
- DISTAV, University of Genoa, C.so Europa 26, 16132, Genoa, Italy
| | - S Farina
- IMC - International Marine Centre, Loc. Sa Mardini, Torre Grande, 09170, Oristano, Italy
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Rong J, Tang Y, Zha S, Han Y, Shi W, Liu G. Ocean acidification impedes gustation-mediated feeding behavior by disrupting gustatory signal transduction in the black sea bream, Acanthopagrus schlegelii. MARINE ENVIRONMENTAL RESEARCH 2020; 162:105182. [PMID: 33049543 DOI: 10.1016/j.marenvres.2020.105182] [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: 07/14/2020] [Revised: 10/05/2020] [Accepted: 10/06/2020] [Indexed: 06/11/2023]
Abstract
Growing evidence suggests that ocean acidification (OA) may affect animal behaviors such as feeding. Although gustation plays a crucial role in evaluating the quality and palatability of food and ultimately influences whether or not teleosts consume the food, the potential impact of OA on gustation-mediated feeding behavior remains unknown. In this study, gustation mediated-feeding behavior, as indicated by the consumption rate (CR) and swallowing rate (SR) of agar pellets with or without feed upon OA exposure was investigated in black sea bream (Acanthopagrus schlegelii). Results showed that the exposure to acidified seawater led to significant reductions in the CR and SR of feed-containing agar pellets. In addition, the in vivo contents of three neurotransmitters and expression of genes from the gustatory signal transduction pathway were all significantly suppressed by the OA treatment. In general, the data obtained indicated that OA may hinder the gustation-mediated feeding behavior of A. schlegelii by disrupting gustatory signal transduction, which may aggravate the issue of food shortage for wild populations of black sea bream.
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Affiliation(s)
- Jiahuan Rong
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yu Tang
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Shanjie Zha
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, China.
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McMahon SJ, Parsons DM, Donelson JM, Pether SMJ, Munday PL. Elevated temperature and CO 2 have positive effects on the growth and survival of larval Australasian snapper. MARINE ENVIRONMENTAL RESEARCH 2020; 161:105054. [PMID: 32823176 DOI: 10.1016/j.marenvres.2020.105054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/16/2020] [Accepted: 06/21/2020] [Indexed: 06/11/2023]
Abstract
Rising water temperature and increased uptake of CO2 by the ocean are predicted to have widespread impacts on marine species. However, the effects are likely to vary, depending on a species' sensitivity and the geographical location of the population. Here, we investigated the potential effects of elevated temperature and pCO2 on larval growth and survival in a New Zealand population of the Australasian snapper, Chrysophyrs auratus. Eggs and larvae were reared in a fully cross-factored experiment (18 °C and 22 °C/pCO2 440 and 1040 μatm) to 16 days post hatch (dph). Morphologies at 1 dph and 16 dph were significantly affected by temperature, but not CO2. At 1dph, larvae at 22 °C were longer (7%) and had larger muscle depth at vent (14%), but had reduced yolk (65%) and oil globule size (16%). Reduced yolk reserves in recently hatched larvae suggests higher metabolic demands in warmer water. At 16 dph, larvae at elevated temperature were longer (12%) and muscle depth at vent was larger (64%). Conversely, survival was primarily affected by CO2 rather than temperature. Survivorship at 1 dph and 16 dph was 24% and 54% higher, respectively, under elevated CO2 compared with ambient conditions. Elevated temperature increased survival (24%) at 1 dph, but not at 16 dph. These results suggest that projected climate change scenarios may have an overall positive effect on early life history growth and survival in this population of C. auratus. This could benefit recruitment success, but needs to be weighed against negative effects of elevated CO2 on metabolic rates and swimming performance observed in other studies on the same population.
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Affiliation(s)
- Shannon J McMahon
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, 4811, Australia.
| | - Darren M Parsons
- National Institute of Water and Atmospheric Research, Auckland, New Zealand; Institute of Marine Science, University of Auckland, Auckland, New Zealand
| | - Jennifer M Donelson
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, 4811, Australia
| | - Steve M J Pether
- National Institute of Water and Atmospheric Research, Northland Marine Research Centre, Ruakaka, New Zealand
| | - Philip L Munday
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, 4811, Australia
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Laubenstein TD, Jarrold MD, Rummer JL, Munday PL. Beneficial effects of diel CO 2 cycles on reef fish metabolic performance are diminished under elevated temperature. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 735:139084. [PMID: 32480143 DOI: 10.1016/j.scitotenv.2020.139084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 03/06/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
Elevated CO2 levels have been shown to affect metabolic performance in some coral reef fishes. However, all studies to date have employed stable elevated CO2 levels, whereas reef habitats can experience substantial diel fluctuations in pCO2 ranging from ±50 to 600 μatm around the mean, fluctuations that are predicted to increase in magnitude by the end of the century. Additionally, past studies have often investigated the effect of elevated CO2 in isolation, despite the fact that ocean temperatures will increase in tandem with CO2 levels. Here, we tested the effects of stable (1000 μatm) versus diel-cycling (1000 ± 500 μatm) elevated CO2 conditions and elevated temperature (+2 °C) on metabolic traits of juvenile spiny damselfish, Acanthochromis polyacanthus. Resting oxygen uptake rates (ṀO2) were higher in fish exposed to stable elevated CO2 conditions when compared to fish from stable control conditions, but were restored to control levels under diel CO2 fluctuations. However, the benefits of diel CO2 fluctuations were diminished at elevated temperature. Factorial aerobic scope showed a similar pattern, but neither maximal ṀO2 nor absolute aerobic scope was affected by CO2 or temperature. Our results suggest that diel CO2 cycles can ameliorate the increased metabolic cost associated with elevated CO2, but elevated temperature diminishes the benefits of diel CO2 cycles. Thus, previous studies may have misestimated the effect of ocean acidification on the metabolic performance of reef fishes by not accounting for environmental CO2 fluctuations. Our findings provide novel insights into the interacting effects of diel CO2 fluctuations and temperature on the metabolic performance of reef fishes.
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Affiliation(s)
- Taryn D Laubenstein
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia.
| | - Michael D Jarrold
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia; College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
| | - Jodie L Rummer
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
| | - Philip L Munday
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
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44
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Murray CS, Baumann H. Are long-term growth responses to elevated pCO2 sex-specific in fish? PLoS One 2020; 15:e0235817. [PMID: 32678858 PMCID: PMC7367484 DOI: 10.1371/journal.pone.0235817] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 06/24/2020] [Indexed: 11/19/2022] Open
Abstract
Whether marine fish will grow differently in future high pCO2 environments remains surprisingly uncertain. Long-term and whole-life cycle effects are particularly unknown, because such experiments are logistically challenging, space demanding, exclude long-lived species, and require controlled, restricted feeding regimes—otherwise increased consumption could mask potential growth effects. Here, we report on repeated, long-term, food-controlled experiments to rear large populations (>4,000 individuals total) of the experimental model and ecologically important forage fish Menidia menidia (Atlantic silverside) under contrasting temperature (17°, 24°, and 28°C) and pCO2 conditions (450 vs. ~2,200 μatm) from fertilization to ~ a third of this annual species’ life span. Quantile analyses of trait distributions showed mostly negative effects of high pCO2 on long-term growth. At 17°C and 28°C, but not at 24°C, high pCO2 fish were significantly shorter [17°C: -5 to -9%; 28°C: -3%] and weighed less [17°C: -6 to -18%; 28°C: -8%] compared to ambient pCO2 fish. Reductions in fish weight were smaller than in length, which is why high pCO2 fish at 17°C consistently exhibited a higher Fulton’s k (weight/length ratio). Notably, it took more than 100 days of rearing for statistically significant length differences to emerge between treatment populations, showing that cumulative, long-term CO2 effects could exist elsewhere but are easily missed by short experiments. Long-term rearing had another benefit: it allowed sexing the surviving fish, thereby enabling rare sex-specific analyses of trait distributions under contrasting CO2 environments. We found that female silversides grew faster than males, but there was no interaction between CO2 and sex, indicating that males and females were similarly affected by high pCO2. Because Atlantic silversides are known to exhibit temperature-dependent sex determination, we also analyzed sex ratios, revealing no evidence for CO2-dependent sex determination in this species.
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Affiliation(s)
- Christopher S. Murray
- Washington Ocean Acidification Center, School of Marine and Environmental Affairs, University of Washington, Seattle, WA, United States of America
- * E-mail:
| | - Hannes Baumann
- Department of Marine Sciences, University of Connecticut, Groton, CT, United States of America
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Cattano C, Agostini S, Harvey BP, Wada S, Quattrocchi F, Turco G, Inaba K, Hall-Spencer JM, Milazzo M. Changes in fish communities due to benthic habitat shifts under ocean acidification conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 725:138501. [PMID: 32298893 DOI: 10.1016/j.scitotenv.2020.138501] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/27/2020] [Accepted: 04/04/2020] [Indexed: 06/11/2023]
Abstract
Ocean acidification will likely change the structure and function of coastal marine ecosystems over coming decades. Volcanic carbon dioxide seeps generate dissolved CO2 and pH gradients that provide realistic insights into the direction and magnitude of these changes. Here, we used fish and benthic community surveys to assess the spatio-temporal dynamics of fish community properties off CO2 seeps in Japan. Adding to previous evidence from ocean acidification ecosystem studies conducted elsewhere, our findings documented shifts from calcified to non-calcified habitats with reduced benthic complexity. In addition, we found that such habitat transition led to decreased diversity of associated fish and to selection of those fish species better adapted to simplified ecosystems dominated by algae. Our data suggest that near-future projected ocean acidification levels will oppose the ongoing range expansion of coral reef-associated fish due to global warming.
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Affiliation(s)
- Carlo Cattano
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, via Archirafi 20-22, 90123 Palermo, Italy; CoNISMa (Interuniversity Consortium of Marine Sciences), Piazzale Flaminio 9, 00196 Rome, Italy.
| | - Sylvain Agostini
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, 415-0025 Shizuoka, Japan
| | - Ben P Harvey
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, 415-0025 Shizuoka, Japan
| | - Shigeki Wada
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, 415-0025 Shizuoka, Japan
| | - Federico Quattrocchi
- IRBIM - Istituto per le Risorse Biologiche e le Biotecnologie Marine, CNR - National Research Council, Via Luigi Vaccara 61, 91026 Mazara del Vallo, TP, Italy
| | - Gabriele Turco
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, via Archirafi 20-22, 90123 Palermo, Italy; CoNISMa (Interuniversity Consortium of Marine Sciences), Piazzale Flaminio 9, 00196 Rome, Italy
| | - Kazuo Inaba
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, 415-0025 Shizuoka, Japan
| | - Jason M Hall-Spencer
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, 415-0025 Shizuoka, Japan; Marine Biology and Ecology Research Centre, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Marco Milazzo
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, via Archirafi 20-22, 90123 Palermo, Italy; CoNISMa (Interuniversity Consortium of Marine Sciences), Piazzale Flaminio 9, 00196 Rome, Italy
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46
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Konno K, Pullin AS. Assessing the risk of bias in choice of search sources for environmental meta-analyses. Res Synth Methods 2020; 11:698-713. [PMID: 32618107 DOI: 10.1002/jrsm.1433] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 06/29/2020] [Accepted: 06/29/2020] [Indexed: 11/12/2022]
Abstract
Results of meta-analyses are potentially valuable for informing environmental policy and practice decisions. However, selective sampling of primary studies through searches exclusively using widely used bibliographic platform(s) could bias estimates of effect sizes. Such search strategies are common in environmental evidence reviews, and if risk of bias can be detected, this would provide the first empirical evidence that comprehensiveness of searches needs to be improved. We compare the impact of using single and multiple bibliographic platform(s) searches vs more comprehensive searches on estimates of mean effect sizes. We used 137 published meta-analyses, based on multiple source searches, analyzing 9388 studies: 8095 sourced from commercially published articles; and 1293 from grey literature and unpublished data. Single-platform and multiple-platform searches missed studies in 100 and 80 of the meta-analyses, respectively: 52 and 46 meta-analyses provided larger-effect estimates; 32 and 28 meta-analyses provided smaller-effect estimates; eight and four meta-analyses provided opposite direction of estimates; and two each were unable to estimate effects due to missing all studies. Further, we found significant positive log-linear relationships between proportions of studies missed and the deviations of mean effect sizes, suggesting that as the number of studies missed increases, deviation of mean effect size is likely to expand. We also found significant differences in mean effect sizes between indexed and non-indexed studies for 35% of meta-analyses, indicating high risk of bias when the searches were restricted. We conclude that the restricted searches are likely to lead to unrepresentative samples of studies and biased estimates of true effects.
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Affiliation(s)
- Ko Konno
- School of Natural Sciences, Bangor University, Gwynedd, UK
| | - Andrew S Pullin
- Centre for Evidence-based Conservation, School of Natural Sciences, Bangor University, Gwynedd, UK
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Otjacques E, Repolho T, Paula JR, Simão S, Baptista M, Rosa R. Cuttlefish Buoyancy in Response to Food Availability and Ocean Acidification. BIOLOGY 2020; 9:E147. [PMID: 32630264 PMCID: PMC7407613 DOI: 10.3390/biology9070147] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/12/2020] [Accepted: 06/28/2020] [Indexed: 12/12/2022]
Abstract
Carbon dioxide concentration in the atmosphere is expected to continue rising by 2100, leading to a decrease in ocean pH in a process known as ocean acidification (OA). OA can have a direct impact on calcifying organisms, including on the cuttlebone of the common cuttlefish Sepia officinalis. Moreover, nutritional status has also been shown to affect the cuttlebone structure and potentially affect buoyancy. Here, we aimed to understand the combined effects of OA (980 μatm CO2) and food availability (fed vs. non-fed) on the buoyancy of cuttlefish newborns and respective cuttlebone weight/area ratio (as a proxy for calcification). Our results indicate that while OA elicited negative effects on hatching success, it did not negatively affect the cuttlebone weight/area ratio of the hatchlings-OA led to an increase in cuttlebone weight/area ratio of fed newborns (but not in unfed individuals). The proportion of "floating" (linked to buoyancy control loss) newborns was greatest under starvation, regardless of the CO2 treatment, and was associated with a drop in cuttlebone weight/area ratio. Besides showing that cuttlefish buoyancy is unequivocally affected by starvation, here, we also highlight the importance of nutritional condition to assess calcifying organisms' responses to ocean acidification.
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Affiliation(s)
- Eve Otjacques
- MARE—Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Av. Nossa Senhora do Cabo, 939, 2750-374 Cascais, Portugal; (T.R.); (J.R.P.); (S.S.); (M.B.); (R.R.)
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48
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Dahlke F, Lucassen M, Bickmeyer U, Wohlrab S, Puvanendran V, Mortensen A, Chierici M, Pörtner HO, Storch D. Fish embryo vulnerability to combined acidification and warming coincides with a low capacity for homeostatic regulation. J Exp Biol 2020; 223:jeb212589. [PMID: 32366687 DOI: 10.1242/jeb.212589] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 04/22/2020] [Indexed: 08/26/2023]
Abstract
The vulnerability of fish embryos and larvae to environmental factors is often attributed to a lack of adult-like organ systems (gills) and thus insufficient homeostatic capacity. However, experimental data supporting this hypothesis are scarce. Here, by using Atlantic cod (Gadus morhua) as a model, the relationship between embryo vulnerability (to projected ocean acidification and warming) and homeostatic capacity was explored through parallel analyses of stage-specific mortality and in vitro activity and expression of major ion pumps (ATP-synthase, Na+/K+-ATPase, H+-ATPase) and co-transporters (NBC1, NKCC1). Immunolocalization of these transporters was used to study ionocyte morphology in newly hatched larvae. Treatment-related embryo mortality until hatching (+20% due to acidification and warming) occurred primarily during an early period (gastrulation) characterized by extremely low ion transport capacity. Thereafter, embryo mortality decreased in parallel with an exponential increase in activity and expression of all investigated ion transporters. Significant changes in transporter activity and expression in response to acidification (+15% activity) and warming (-30% expression) indicate some potential for short-term acclimatization, although this is probably associated with energetic trade-offs. Interestingly, whole-larvae enzyme activity (supported by abundant epidermal ionocytes) reached levels similar to those previously measured in gill tissue of adult cod, suggesting that early-life stages without functional gills are better equipped in terms of ion homeostasis than previously thought. This study implies that the gastrulation period represents a critical transition from inherited (maternal) defenses to active homeostatic regulation, which facilitates enhanced resilience of later stages to environmental factors.
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Affiliation(s)
- Flemming Dahlke
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
- University of Bremen, NW 2 Leobener Str., 28359 Bremen, Germany
| | - Magnus Lucassen
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Ulf Bickmeyer
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Sylke Wohlrab
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
- Helmholtz Institute for Functional Marine Biodiversity, Ammerländer Heersstraße 231, 26129 Oldenburg, Germany
| | | | | | | | - Hans-Otto Pörtner
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
- University of Bremen, NW 2 Leobener Str., 28359 Bremen, Germany
| | - Daniela Storch
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
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49
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Mirasole A, Signa G, Gianguzza P, Bonaviri C, Mazzola A, Vizzini S. Fish assemblages cope with ocean acidification in a shallow volcanic CO 2 vent benefiting from an adjacent recovery area. MARINE ENVIRONMENTAL RESEARCH 2020; 157:104851. [PMID: 32275499 DOI: 10.1016/j.marenvres.2019.104851] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 12/01/2019] [Accepted: 12/02/2019] [Indexed: 06/11/2023]
Abstract
Shallow CO2 vents are used to test ecological hypotheses about the effects of ocean acidification (OA). Here, we studied fish assemblages associated with Cymodocea nodosa meadows exposed to high pCO2/low pH conditions at a natural CO2 vent in the Mediterranean Sea. Using underwater visual census, we assessed fish community structure and biodiversity in a low pH site (close to the CO2 vent), a close control site and a far control site, hypothesising a decline in biodiversity and a homogenization of fish assemblages under OA conditions. Our findings revealed that fish diversity did not show a unique spatial pattern, or even significant relationships with pH, but correlated with seagrass leaf canopy. Among-site similarity was found in the abundance of juveniles, contrary to the expected impacts of OA on early life stages. However, pH seems an important driver in structuring fish assemblage in the low pH site, despite its high similarity with the close control site. This unexpected pattern may represent a combined response of fish mobility, enhanced food resources in the acidified site, and a 'recovery area' effect of the adjacent control site.
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Affiliation(s)
- Alice Mirasole
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 18, 90123, Palermo, Italy; Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Villa Dohrn-Benthic Ecology Center, Punta San Pietro s/n, 80077, Ischia, Napoli, Italy.
| | - Geraldina Signa
- CoNISMa, National Inter-University Consortium for Marine Science, Piazzale Flaminio 9, 00196, Roma, Italy
| | - Paola Gianguzza
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 18, 90123, Palermo, Italy
| | - Chiara Bonaviri
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 18, 90123, Palermo, Italy
| | - Antonio Mazzola
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 18, 90123, Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Science, Piazzale Flaminio 9, 00196, Roma, Italy
| | - Salvatrice Vizzini
- University of Palermo, Department of Earth and Marine Sciences, via Archirafi 18, 90123, Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Science, Piazzale Flaminio 9, 00196, Roma, Italy
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50
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Jarrold MD, Welch MJ, McMahon SJ, McArley T, Allan BJM, Watson SA, Parsons DM, Pether SMJ, Pope S, Nicol S, Smith N, Herbert N, Munday PL. Elevated CO 2 affects anxiety but not a range of other behaviours in juvenile yellowtail kingfish. MARINE ENVIRONMENTAL RESEARCH 2020; 157:104863. [PMID: 32275516 DOI: 10.1016/j.marenvres.2019.104863] [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: 08/07/2019] [Revised: 12/12/2019] [Accepted: 12/14/2019] [Indexed: 06/11/2023]
Abstract
Elevated seawater CO2 can cause a range of behavioural impairments in marine fishes. However, most studies to date have been conducted on small benthic species and very little is known about how higher oceanic CO2 levels could affect the behaviour of large pelagic species. Here, we tested the effects of elevated CO2, and where possible the interacting effects of high temperature, on a range of ecologically important behaviours (anxiety, routine activity, behavioural lateralization and visual acuity) in juvenile yellowtail kingfish, Seriola lalandi. Kingfish were reared from the egg stage to 25 days post-hatch in a full factorial design of ambient and elevated CO2 (~500 and ~1000 μatm pCO2) and temperature (21 °C and 25 °C). The effects of elevated CO2 were trait-specific with anxiety the only behaviour significantly affected. Juvenile S. lalandi reared at elevated CO2 spent more time in the dark zone during a standard black-white test, which is indicative of increased anxiety. Exposure to high temperature had no significant effect on any of the behaviours tested. Overall, our results suggest that juvenile S. lalandi are largely behaviourally tolerant to future ocean acidification and warming. Given the ecological and economic importance of large pelagic fish species more studies investigating the effect of future climate change are urgently needed.
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Affiliation(s)
- Michael D Jarrold
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, 4811, Australia
| | - Megan J Welch
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, 4811, Australia
| | - Shannon J McMahon
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, 4811, Australia
| | - Tristan McArley
- Leigh Marine Laboratory, The University of Auckland, Leigh, 0985, New Zealand
| | - Bridie J M Allan
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, 4811, Australia; Department of Marine Science, University of Otago, Dunedin, 9016, New Zealand
| | - Sue-Ann Watson
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, 4811, Australia; Biodiversity and Geosciences Program, Museum of Tropical Queensland, Queensland Museum, Townsville, Queensland, 4810, Australia
| | - Darren M Parsons
- Leigh Marine Laboratory, The University of Auckland, Leigh, 0985, New Zealand; National Institute of Water and Atmospheric Research Ltd, Auckland, New Zealand
| | - Stephen M J Pether
- National Institute of Water and Atmospheric Research, Northland Marine Research Centre, Station Road, Ruakaka, 0116, New Zealand
| | - Stephen Pope
- National Institute of Water and Atmospheric Research Ltd, Auckland, New Zealand
| | - Simon Nicol
- Insitute for Applied Ecology, University of Canberra, ACT, 2617, Australia
| | - Neville Smith
- Oceanic Fisheries Programme, Pacific Community, CPS - B.P, D5 98848, Noumea, New Caledonia
| | - Neill Herbert
- Leigh Marine Laboratory, The University of Auckland, Leigh, 0985, New Zealand
| | - Philip L Munday
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, 4811, Australia.
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