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Dubuc A, Rummer JL, Vigliola L, Lemonnier H. Coping with environmental degradation: Physiological and morphological adjustments of wild mangrove fish to decades of aquaculture-induced nutrient enrichment. MARINE POLLUTION BULLETIN 2024; 205:116599. [PMID: 38878416 DOI: 10.1016/j.marpolbul.2024.116599] [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: 11/15/2023] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 07/24/2024]
Abstract
The impact of eutrophication on wild fish individuals is rarely reported. We compared physiological and morphological traits of Siganus lineatus chronically exposed to aquaculture-induced eutrophication in the wild with individuals living at a control site. Eutrophication at the impacted site was confirmed by elevated organic matter (up to 150 % higher), phytoplankton (up to 7 times higher), and reduced oxygen (up to 60 % lower). Physiological and morphological traits of S. lineatus differed significantly between the two sites. Fish from the impacted site exhibited elevated hypoxia tolerance, increased gill surface area, shorter oxygen diffusion distances, and altered blood oxygen-carrying capacity. Elevated blood lactate and scope for anaerobic ATP production were observed, suggesting enhanced survival below critical oxygen levels. A significant 8.5 % increase in metabolic costs and altered allometric scaling, related to environmental degradation, were recorded. Our study underscores eutrophication's profound impact at the organism-level and the importance to mitigate it.
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Affiliation(s)
- A Dubuc
- Institut Français de Recherche pour l'Exploitation de la MER (IFREMER), UMR Entropie (IFREMER, IRD, UNC, UR, CNRS), Nouméa, New Caledonia; School of Life Sciences, University of Essex, Colchester, United Kingdom.
| | - J L Rummer
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
| | - L Vigliola
- Institut de Recherche pour le Développement (IRD), UMR Entropie (IRD, IFREMER, UNC, UR, CNRS), Nouméa, New Caledonia
| | - H Lemonnier
- Institut Français de Recherche pour l'Exploitation de la MER (IFREMER), UMR Entropie (IFREMER, IRD, UNC, UR, CNRS), Nouméa, New Caledonia
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2
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Van Wert JC, Birnie-Gauvin K, Gallagher J, Hardison EA, Landfield K, Burkepile DE, Eliason EJ. Despite plasticity, heatwaves are costly for a coral reef fish. Sci Rep 2024; 14:13320. [PMID: 38858427 PMCID: PMC11164959 DOI: 10.1038/s41598-024-63273-8] [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: 10/31/2023] [Accepted: 05/27/2024] [Indexed: 06/12/2024] Open
Abstract
Climate change is intensifying extreme weather events, including marine heatwaves, which are prolonged periods of anomalously high sea surface temperature that pose a novel threat to aquatic animals. Tropical animals may be especially vulnerable to marine heatwaves because they are adapted to a narrow temperature range. If these animals cannot acclimate to marine heatwaves, the extreme heat could impair their behavior and fitness. Here, we investigated how marine heatwave conditions affected the performance and thermal tolerance of a tropical predatory fish, arceye hawkfish (Paracirrhites arcatus), across two seasons in Moorea, French Polynesia. We found that the fish's daily activities, including recovery from burst swimming and digestion, were more energetically costly in fish exposed to marine heatwave conditions across both seasons, while their aerobic capacity remained the same. Given their constrained energy budget, these rising costs associated with warming may impact how hawkfish prioritize activities. Additionally, hawkfish that were exposed to hotter temperatures exhibited cardiac plasticity by increasing their maximum heart rate but were still operating within a few degrees of their thermal limits. With more frequent and intense heatwaves, hawkfish, and other tropical fishes must rapidly acclimate, or they may suffer physiological consequences that alter their role in the ecosystem.
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Affiliation(s)
- Jacey C Van Wert
- Department of Ecology, Evolution & Marine Biology, University of California, Santa Barbara, CA, 93106, USA.
| | - Kim Birnie-Gauvin
- Department of Ecology, Evolution & Marine Biology, University of California, Santa Barbara, CA, 93106, USA
- Section for Freshwater Fisheries and Ecology, National Institute of Aquatic Resources, Technical University of Denmark, Silkeborg, Denmark
| | - Jordan Gallagher
- Department of Ecology, Evolution & Marine Biology, University of California, Santa Barbara, CA, 93106, USA
| | - Emily A Hardison
- Department of Ecology, Evolution & Marine Biology, University of California, Santa Barbara, CA, 93106, USA
| | - Kaitlyn Landfield
- Department of Ecology, Evolution & Marine Biology, University of California, Santa Barbara, CA, 93106, USA
| | - Deron E Burkepile
- Department of Ecology, Evolution & Marine Biology, University of California, Santa Barbara, CA, 93106, USA
- Marine Science Institute, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Erika J Eliason
- Department of Ecology, Evolution & Marine Biology, University of California, Santa Barbara, CA, 93106, USA
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Li P, Li ZH. Neurotoxicity and physiological stress in brain of zebrafish chronically exposed to tributyltin. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2021; 84:20-30. [PMID: 33016251 DOI: 10.1080/15287394.2020.1828209] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Tributyltin (TBT), an organotin compound, is hazardous in aquatic ecosystems. However, the mechanisms underlying TBT-induced central nervous system (CNS) toxicity remain to be determined especially in freshwater aquatic vertebrates. The aim of present study was to investigate the effects of chronic exposure to TBT on brain functions in a freshwater teleost the adult wild-type zebrafish (Danio rerio). Fish were exposed to sublethal concentrations of TBT (10, 100 or 300 ng/L) for 6 weeks. The influence of long-term TBT exposure was assessed in the brain of zebrafish with antioxidant related indices including malondialdehyde (MDA) levels and total antioxidant capacity, neurological parameters such as activities of acetylcholinesterase, and monoamine oxidase as well as levels of nitric oxide, dopamine, 5-hydroxytryptamine. In addition indices related to sensitivity of toxic insult such as cytochrome P450 1 regulation and heat shock protein 70 were determined. The regulation of related genes involved in endoplasmic reticulum stress (ERS), apoptosis and Nrf2 pathway were measured. Adverse physiological and biochemical responses were significantly enhanced in a concentration-dependent manner reflecting neurotoxicity attributed to TBT exposure. Our findings provide further insight into TBT-induced toxicity in wild-type zebrafish. and enhance our understanding of the molecular mechanisms underlying TBT-initiated CNS effects.
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Affiliation(s)
- Ping Li
- Marine College, Shandong University , Weihai, Shandong, China
| | - Zhi-Hua Li
- Marine College, Shandong University , Weihai, Shandong, China
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences , Wuhan, China
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Sueiro MC, Awruch C, Gilardoni C, Demetrio M, Palacios MG. Immunity and health of two wild marine fishes naturally exposed to anthropogenic pollution. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 726:138303. [PMID: 32305751 DOI: 10.1016/j.scitotenv.2020.138303] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/23/2020] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
There are increasing global concerns of the alarming pollution impacts on marine life, thus it is becoming essential to generate reliable tools to monitor and understand the effects of these impacts on aquatic organisms. We performed a field study assessing how exposure to anthropogenic pollution impacts immunological and health-state parameters and parasite infection of a wild marine fish, the Brazilian sandperch Pinguipes brasilianus. Then we compared this information to previously published data of a sympatric species, the Patagonian rockfish Sebastes oculatus inhabiting the same polluted and pristine areas. The field study revealed that exposed P. brasilianus showed chronic stress, poor immune condition and higher prevalence and abundance of acanthocephalan parasites. By comparing these former results with already published in S. oculatus, we concluded that, although both species exhibited physiological alterations associate to inhabiting sites exposed to pollution, their specific immunological and health-state responses differed. Our results demonstrate that Patagonian reef-fish assemblages inhabiting sites exposed to pollutant are being affected in their immune and heath condition, which could potentially result in higher susceptibility to disease and in turn population decline. These findings highlight the necessity of more studies incorporating interspecific comparisons to assess variation in fish susceptibility in an ecoimmunotoxicological context and get a more profound understanding of anthropogenic impacts on wildlife.
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Affiliation(s)
- María Cruz Sueiro
- Centro para el Estudio de Sistemas Marinos (CESIMAR), Centro Nacional Patagónico - Consejo Nacional de Investigaciones Científicas y Técnicas (CENPAT - CONICET) Puerto Madryn, Chubut, Argentina.
| | - Cynthia Awruch
- Centro para el Estudio de Sistemas Marinos (CESIMAR), Centro Nacional Patagónico - Consejo Nacional de Investigaciones Científicas y Técnicas (CENPAT - CONICET) Puerto Madryn, Chubut, Argentina; School of Natural Sciences, University of Tasmania, Tasmania 7001, Australia.
| | - Carmen Gilardoni
- Laboratorio de Parasitología (LAPA), Instituto de Biología de Organismos Marinos (IBIOMAR), Centro Nacional Patagónico - Consejo Nacional de Investigaciones Científicas y Técnicas (CENPAT - CONICET) Puerto Madryn, Chubut, Argentina.
| | - Muriel Demetrio
- Laboratorio de Parasitología (LAPA), Instituto de Biología de Organismos Marinos (IBIOMAR), Centro Nacional Patagónico - Consejo Nacional de Investigaciones Científicas y Técnicas (CENPAT - CONICET) Puerto Madryn, Chubut, Argentina
| | - María Gabriela Palacios
- Centro para el Estudio de Sistemas Marinos (CESIMAR), Centro Nacional Patagónico - Consejo Nacional de Investigaciones Científicas y Técnicas (CENPAT - CONICET) Puerto Madryn, Chubut, Argentina.
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Harding HR, Gordon TAC, Hsuan RE, Mackaness ACE, Radford AN, Simpson SD. Fish in habitats with higher motorboat disturbance show reduced sensitivity to motorboat noise. Biol Lett 2018; 14:20180441. [PMID: 30282747 PMCID: PMC6227867 DOI: 10.1098/rsbl.2018.0441] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 09/05/2018] [Indexed: 11/12/2022] Open
Abstract
Anthropogenic noise can negatively impact many taxa worldwide. It is possible that in noisy, high-disturbance environments, the range and severity of impacts could diminish over time, but the influence of previous disturbance remains untested in natural conditions. This study demonstrates the effects of motorboat noise on the physiology of an endemic cichlid fish in Lake Malawi. Exposure to motorboats (driven 20-100 m from fish) and loudspeaker playback of motorboat noise both elevated the oxygen-consumption rate at a single lower-disturbance site, characterized by low historic and current motorboat activity. Repeating this assay at further lower-disturbance sites revealed a consistent effect of elevated oxygen consumption in response to motorboat disturbance. However, when similar trials were repeated at four higher-disturbance sites, no effect of motorboat exposure was detected. These results demonstrate that disturbance history can affect local population responses to noise. Action regarding noise pollution should consider the past, as well as the present, when planning for the future.
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Affiliation(s)
- Harry R Harding
- School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, UK
- Marine Scotland Science, 375 Victoria Road, Aberdeen AB11 9DB, UK
| | - Timothy A C Gordon
- Biosciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK
| | - Rachel E Hsuan
- Biosciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK
| | - Alex C E Mackaness
- School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, UK
| | - Andrew N Radford
- School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, UK
| | - Stephen D Simpson
- Biosciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK
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Bouyoucos IA, Weideli OC, Planes S, Simpfendorfer CA, Rummer JL. Dead tired: evaluating the physiological status and survival of neonatal reef sharks under stress. CONSERVATION PHYSIOLOGY 2018; 6:coy053. [PMID: 30254751 PMCID: PMC6142904 DOI: 10.1093/conphys/coy053] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 08/14/2018] [Accepted: 08/27/2018] [Indexed: 05/30/2023]
Abstract
Marine protected areas (MPAs) can protect shark populations from targeted fisheries, but resident shark populations may remain exposed to stressors like capture as bycatch and environmental change. Populations of young sharks that rely on shallow coastal habitats, e.g. as nursery areas, may be at risk of experiencing these stressors. The purpose of this study was to characterize various components of the physiological stress response of neonatal reef sharks following exposure to an exhaustive challenge under relevant environmental conditions. To accomplish this, we monitored markers of the secondary stress response and measured oxygen uptake rates ( M˙O2 ) to compare to laboratory-derived baseline values in neonatal blacktip reef (Carcharhinus melanopterus) and sicklefin lemon sharks (Negaprion acutidens). Measurements occurred over three hours following exposure to an exhaustive challenge (gill-net capture with air exposure). Blood lactate concentrations and pH deviated from baseline values at the 3-h sample, indicating that both species were still stressed 3 h after capture. Evidence of a temperature effect on physiological status of either species was equivocal over 28-31°C. However, aspects of the physiological response were species-specific; N. acutidens exhibited a larger difference in blood pH relative to baseline values than C. melanopterus, possibly owing to higher minimum M˙O2 . Neither species experienced immediate mortality during the exhaustive challenge; although, single instances of delayed mortality were documented for each species. Energetic costs and recovery times could be extrapolated for C. melanopterus via respirometry; sharks were estimated to expend 9.9 kJ kg-1 (15% of energy expended on daily swimming) for a single challenge and could require 8.4 h to recover. These data suggest that neonatal C. melanopterus and N. acutidens are resilient to brief gill-net capture durations, but this was under a narrow temperature range. Defining species' vulnerability to stressors is important for understanding the efficacy of shark conservation tools, including MPAs.
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Affiliation(s)
- Ian A Bouyoucos
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
- PSL Research University, EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan, 58 Avenue Paul Alduy, Perpignan Cedex, France
| | - Ornella C Weideli
- PSL Research University, EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan, 58 Avenue Paul Alduy, Perpignan Cedex, France
| | - Serge Planes
- PSL Research University, EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan, 58 Avenue Paul Alduy, Perpignan Cedex, France
- Laboratoire d’Excellence “CORAIL”, EPHE, PSL Research University, UPVD, CNRS, USR 3278 CRIOBE, Papetoai, Moorea, French Polynesia
| | - Colin A Simpfendorfer
- Centre for Sustainable Tropical Fisheries and Aquaculture & College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
| | - Jodie L Rummer
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
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Hess S, Prescott LJ, Hoey AS, McMahon SA, Wenger AS, Rummer JL. Species-specific impacts of suspended sediments on gill structure and function in coral reef fishes. Proc Biol Sci 2018; 284:rspb.2017.1279. [PMID: 29093217 DOI: 10.1098/rspb.2017.1279] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 10/03/2017] [Indexed: 01/01/2023] Open
Abstract
Reduced water quality, in particular increases in suspended sediments, has been linked to declines in fish abundance on coral reefs. Changes in gill structure induced by suspended sediments have been hypothesized to impair gill function and may provide a mechanistic basis for the observed declines; yet, evidence for this is lacking. We exposed juveniles of three reef fish species (Amphiprion melanopus, Amphiprion percula and Acanthochromis polyacanthus) to suspended sediments (0-180 mg l-1) for 7 days and examined changes in gill structure and metabolic performance (i.e. oxygen consumption). Exposure to suspended sediments led to shorter gill lamellae in A. melanopus and A. polyacanthus and reduced oxygen diffusion distances in all three species. While A. melanopus exhibited impaired oxygen uptake after suspended sediment exposure, i.e. decreased maximum and increased resting oxygen consumption rates resulting in decreased aerobic scope, the oxygen consumption rates of the other two species remained unaffected. These findings imply that species sensitive to changes in gill structure such as A. melanopus may decline in abundance as reefs become more turbid, whereas species that are able to maintain metabolic performance despite suspended sediment exposure, such as A. polyacanthus or A. percula, may be able to persist or gain a competitive advantage.
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Affiliation(s)
- Sybille Hess
- ARC Centre of Excellence for Coral Reef Studies, Townsville, 4811 Queensland, Australia .,College of Science and Engineering, James Cook University, Townsville, 4811 Queensland, Australia
| | - Leteisha J Prescott
- ARC Centre of Excellence for Coral Reef Studies, Townsville, 4811 Queensland, Australia.,College of Science and Engineering, James Cook University, Townsville, 4811 Queensland, Australia
| | - Andrew S Hoey
- ARC Centre of Excellence for Coral Reef Studies, Townsville, 4811 Queensland, Australia
| | - Shannon A McMahon
- ARC Centre of Excellence for Coral Reef Studies, Townsville, 4811 Queensland, Australia.,College of Science and Engineering, James Cook University, Townsville, 4811 Queensland, Australia
| | - Amelia S Wenger
- School of Earth and Environmental Sciences, University of Queensland, St Lucia, 4072 Queensland, Australia
| | - Jodie L Rummer
- ARC Centre of Excellence for Coral Reef Studies, Townsville, 4811 Queensland, Australia
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