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Shelton DS, Suriyampola PS, Dinges ZM, Glaholt SP, Shaw JR, Martins EP. Plants buffer some of the effects of a pair of cadmium-exposed zebrafish on the un-exposed majority. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 107:104419. [PMID: 38508506 PMCID: PMC11042042 DOI: 10.1016/j.etap.2024.104419] [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: 06/22/2023] [Revised: 03/10/2024] [Accepted: 03/14/2024] [Indexed: 03/22/2024]
Abstract
Certain individuals have a disproportionate effect on group responses. Characteristics may include susceptibility to pollutants, such as cadmium (Cd), a potent trace metal. Here, we show how a pair of Cd-exposed individuals can impact the behavior of unexposed groups. We used behavioral assessments to characterize the extent of the effects of the Cd-exposed individuals on group boldness, cohesion, foraging, activity, and responses to plants. We found that groups with a pair of Cd-exposed fish remained closer to novel stimuli and plants than did groups with untreated (control) fish. The presence of plants reduced Cd-induced differences in shoal cohesion and delays feeding in male shoals. Shoals with Cd- and water-treated fish were equally active. The results suggest that fish acutely exposed to environmentally relevant Cd concentrations can have profound effects on the un-exposed majority. However, the presence of plants may mitigate the effects of contaminants on some aspects of social behavior.
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Affiliation(s)
- Delia S Shelton
- Department of Biology, University of Miami, 1301 Memorial Dr, Coral Gables, FL 33134, USA.
| | - Piyumika S Suriyampola
- School of Life Sciences, Arizona State University, 427 East Tyler Mall, Tempe, AZ 85287, USA
| | - Zoe M Dinges
- Department of Biology, Indiana University, 1001 E 3rd St, Bloomington, IN 47405, USA
| | - Stephen P Glaholt
- O'Neill School of Public and Environmental Affairs, Indiana University, 1315 E 10th St, Bloomington, IN 47405, USA
| | - Joseph R Shaw
- O'Neill School of Public and Environmental Affairs, Indiana University, 1315 E 10th St, Bloomington, IN 47405, USA
| | - Emília P Martins
- School of Life Sciences, Arizona State University, 427 East Tyler Mall, Tempe, AZ 85287, USA
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2
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Shelton DS, Suriyampola PS, Dinges ZM, Glaholt SP, Shaw JR, Martins EP. A Pair of Cadmium-exposed Zebrafish Affect Boldness and Landmark use in the Un-exposed Majority. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.09.566440. [PMID: 38014116 PMCID: PMC10680604 DOI: 10.1101/2023.11.09.566440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Some individuals have a disproportionate effect on group responses. These individuals may possess distinct attributes that differentiate them from others. These characteristics may include susceptibility to contaminant exposure such as cadmium, a potent trace metal present in water and food. Here, we tested whether a pair of cadmium-exposed individuals could exert an impact on the behavior of the unexposed majority. We used behavioral assessments to characterize the extent of the effects of the cadmium-exposed pair on group boldness, cohesion, activity and responses to landmarks. We found that groups with a pair of cadmium-exposed fish approached and remained closer to novel stimuli and landmarks than did groups with pairs of fish treated with uncontaminated water (control). Shoals with cadmium and water treated fish exhibited similar levels of cohesion and activity. The results suggest that fish acutely exposed to environmentally-relevant cadmium concentrations can have profound effects on the un-exposed majority.
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3
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Shelton DS, Dinges ZM, Khemka A, Sykes DJ, Suriyampola PS, Shelton DEP, Boyd P, Kelly JR, Bower M, Amro H, Glaholt SP, Latta MB, Perkins HL, Shaw JR, Martins EP. A pair of cadmium-exposed zebrafish affect social behavior of the un-exposed majority. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 100:104119. [PMID: 37028532 PMCID: PMC10423439 DOI: 10.1016/j.etap.2023.104119] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/28/2023] [Accepted: 04/02/2023] [Indexed: 06/15/2023]
Abstract
To account for global contamination events, we must identify direct and indirect pollutant effects. Although pollutants can have direct effects on individuals, it is unknown how a few contaminated individuals affect groups, a widespread social organization. We show environmentally relevant levels of cadmium (Cd) can have indirect social effects revealed in the social context of a larger group. Cd-contaminated individuals had poor vision and more aggressive responses, but no other behavioral effects. The presence of experienced Cd-exposed pairs in the groups had an indirect effect on the un-exposed individual's social interactions leading to the shoal becoming bolder and moving closer to a novel object than control groups. Because a few directly affected individuals could indirectly affect social behavior of the un-exposed majority, we believe that such acute but potentially important heavy metal toxicity could inform reliable predictions about the consequences of their use in a changing world.
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Affiliation(s)
- Delia S Shelton
- Department of Biology, University of Miami, 1301 Memorial Dr., Coral Gables, FL 33134, USA.
| | - Zoe M Dinges
- Department of Biology, Indiana University, 1001 E. 3rd St, Bloomington, IN 47405, USA
| | - Anuj Khemka
- Department of Biology, Indiana University, 1001 E. 3rd St, Bloomington, IN 47405, USA
| | - Delawrence J Sykes
- Department of Biology, Berry College, 2277 Martha Berry Hwy NW, Mount Berry, GA 30149, USA
| | - Piyumika S Suriyampola
- School of Life Sciences, Arizona State University, 427 East Tyler Hall, Tempe, AZ 85287, USA
| | | | - Ploypenmas Boyd
- Biochemistry and Molecular Biology, Oregon State University, 128 Kidder Hall, Corvallis 97331, OR, USA
| | - Jeffrey R Kelly
- Department of Psychology, University of Tennessee, Austin Peay Building, Knoxville, TX 37996, USA
| | - Myra Bower
- Department of Psychology, University of Tennessee, Austin Peay Building, Knoxville, TX 37996, USA
| | - Halima Amro
- Department of Psychology, University of Tennessee, Austin Peay Building, Knoxville, TX 37996, USA
| | - Stephen P Glaholt
- School of Public and Environmental Affairs, Indiana University, 1315 E 10th St, Bloomington, IN 47405, USA
| | - Mitchell B Latta
- School of Public and Environmental Affairs, Indiana University, 1315 E 10th St, Bloomington, IN 47405, USA
| | - Hannah L Perkins
- School of Public and Environmental Affairs, Indiana University, 1315 E 10th St, Bloomington, IN 47405, USA
| | - Joseph R Shaw
- School of Public and Environmental Affairs, Indiana University, 1315 E 10th St, Bloomington, IN 47405, USA
| | - Emília P Martins
- School of Life Sciences, Arizona State University, 427 East Tyler Hall, Tempe, AZ 85287, USA
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4
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Silva PV, Silva ARR, Clark NJ, Vassallo J, Baccaro M, Medvešček N, Grgić M, Ferreira A, Busquets-Fité M, Jurkschat K, Papadiamantis AG, Puntes V, Lynch I, Svendsen C, van den Brink NW, Handy RD, van Gestel CAM, Loureiro S. Toxicokinetics and bioaccumulation of silver sulfide nanoparticles in benthic invertebrates in an indoor stream mesocosm. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162160. [PMID: 36775152 DOI: 10.1016/j.scitotenv.2023.162160] [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: 10/26/2022] [Revised: 02/06/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Mesocosms allow the simulation of environmentally relevant conditions and can be used to establish more realistic scenarios of organism exposure to nanoparticles. An indoor mesocosm experiment simulating an aquatic stream ecosystem was conducted to assess the toxicokinetics and bioaccumulation of silver sulfide nanoparticles (Ag2S NPs) and AgNO3 in the freshwater invertebrates Girardia tigrina, Physa acuta and Chironomus riparius, and determine if previous single-species tests can predict bioaccumulation in the mesocosm. Water was daily spiked at 10 μg Ag L-1. Ag concentrations in water and sediment reached values of 13.4 μg Ag L-1 and 0.30 μg Ag g-1 in the Ag2S NP exposure, and 12.8 μg Ag L-1 and 0.20 μg Ag g-1 in the AgNO3. Silver was bioaccumulated by the species from both treatments, but with approximately 1.5, 3 and 11 times higher body Ag concentrations in AgNO3 compared to Ag2S NP exposures in snails, chironomids and planarians, respectively. In the Ag2S NP exposures, the observed uptake was probably of the particulate form. This demonstrates that this more environmentally relevant Ag nanoform may be bioavailable for uptake by benthic organisms. Interspecies interactions likely occurred, namely predation (planarians fed on chironomids and snails), which somehow influenced Ag uptake/bioaccumulation, possibly by altering organisms´ foraging behaviour. Higher Ag uptake rate constants were determined for AgNO3 (0.64, 80.4 and 1.12 Lwater g-1organism day-1) than for Ag2S NPs (0.05, 2.65 and 0.32 Lwater g-1organism day-1) for planarians, snails and chironomids, respectively. Biomagnification under environmentally realistic exposure seemed to be low, although it was likely to occur in the food chain P. acuta to G. tigrina exposed to AgNO3. Single-species tests generally could not reliably predict Ag bioaccumulation in the more complex mesocosm scenario. This study provides methodologies/data to better understand exposure, toxicokinetics and bioaccumulation of Ag in complex systems, reinforcing the need to use mesocosm studies to improve the risk assessment of environmental contaminants, specifically NPs, in aquatic environments.
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Affiliation(s)
- Patrícia V Silva
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Ana Rita R Silva
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Nathaniel J Clark
- School of Biological and Marine Sciences, University of Plymouth, Plymouth, UK
| | - Joanne Vassallo
- School of Biological and Marine Sciences, University of Plymouth, Plymouth, UK
| | - Marta Baccaro
- Department of Toxicology, Wageningen University, Wageningen, the Netherlands
| | - Neja Medvešček
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, 1000 Ljubljana, Slovenia
| | - Magdalena Grgić
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia
| | - Abel Ferreira
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | | | - Kerstin Jurkschat
- Department of Materials, Oxford University Begbroke Science Park, Begbroke, UK
| | - Anastasios G Papadiamantis
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, B15 2TT Birmingham, UK; NovaMechanics Ltd., 1065 Nicosia, Cyprus
| | - Victor Puntes
- Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC, The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain; Vall d'Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain
| | - Iseult Lynch
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, B15 2TT Birmingham, UK
| | - Claus Svendsen
- Centre of Ecology and Hydrology (CEH-NERC), Wallingford, UK
| | | | - Richard D Handy
- School of Biological and Marine Sciences, University of Plymouth, Plymouth, UK
| | - Cornelis A M van Gestel
- Amsterdam Institute for Life and Environment (A-LIFE), Faculty of Science, Vrije Universiteit Amsterdam, the Netherlands
| | - Susana Loureiro
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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5
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McCallum ES, Dey CJ, Cerveny D, Bose APH, Brodin T. Social status modulates the behavioral and physiological consequences of a chemical pollutant in animal groups. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2021; 31:e02454. [PMID: 34549857 DOI: 10.1002/eap.2454] [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: 01/21/2021] [Revised: 04/23/2021] [Accepted: 05/20/2021] [Indexed: 06/13/2023]
Abstract
The social environment (i.e., the suite of social interactions that occur among individuals that can result in variation in social ranks) is a commonly overlooked aspect of biology when scientists evaluate the effects of chemical contaminants. The social environment, however, represents the arena in which individual-level performance shapes group- or population-level outcomes and may therefore mediate many of the ultimate consequences of chemicals for wildlife. Here, we evaluated the role that the social environment plays in determining the consequences of pollutant exposure. We exposed groups of juvenile brown trout (Salmo trutta) to an emerging pharmaceutical pollutant that is commonly detected in freshwaters (the benzodiazepine, oxazepam) and allowed them to form dominance hierarchies. Exposure affected dominant and subordinate fish differently, causing fish to become less aggressive at high doses and subordinate fish to become more competitively successful at low doses. These perturbations had further consequences for growth, fin damage, and survival. Exposure also modulated physiological stress in the hierarchy, and social status itself affected how much oxazepam was absorbed in tissues, potentially creating a dynamic feedback loop that further influences the asymmetric effects of exposure on differing social statuses. Many effects followed a "U-shaped" dose-response curve, highlighting the importance of nonlinear, low-dose effects. Altogether, we show that social structure in animal groups can interact with and modulate the effects of an environmental contaminant. We underscore the need to account for an organism's natural ecological context, including their social environment, in future experiments and environmental risk assessments to predict the effects of chemical contaminants on wildlife.
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Affiliation(s)
- Erin S McCallum
- Department of Wildlife, Fish & Environmental Studies, Swedish University of Agricultural Sciences (SLU), Umeå, Sweden
| | - Cody J Dey
- Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, 867 Lakeshore Road, Burlington, Ontario, L7S 1A1, Canada
| | - Daniel Cerveny
- Department of Wildlife, Fish & Environmental Studies, Swedish University of Agricultural Sciences (SLU), Umeå, Sweden
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice, Zatisi 728/II, Vodnany, Czech Republic
| | - Aneesh P H Bose
- Department of Collective Behaviour, Max Planck Institute of Animal Behavior, Konstanz, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Konstanz, Germany
- Department of Biology, University of Konstanz, Konstanz, Germany
| | - Tomas Brodin
- Department of Wildlife, Fish & Environmental Studies, Swedish University of Agricultural Sciences (SLU), Umeå, Sweden
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6
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Ré A, Rocha AT, Campos I, Marques SM, Keizer JJ, Gonçalves FJM, Pereira JL, Abrantes N. Impacts of wildfires in aquatic organisms: biomarker responses and erythrocyte nuclear abnormalities in Gambusia holbrooki exposed in situ. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:51733-51744. [PMID: 33987727 DOI: 10.1007/s11356-021-14377-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
Wildfires are an environmental concern due to the loss of forest area and biodiversity, but also because their role as drivers of freshwater systems contamination by metals. In this context, the fish Gambusia holbrooki was used as a model, deployed for in situ exposure in watercourses standing within a recently burnt area and further assessment of toxic effects. The fish were exposed during 4 days at four different sites: one upstream and another downstream the burnt area and two within the burnt area. Biochemical biomarkers for oxidative stress and damage were assessed. The extent of lipoperoxidative damage was monitored by quantifying malondialdehyde and DNA damage evaluated through erythrocyte nuclear abnormalities observation. Chemical analysis revealed higher metal levels within the burnt area, and exposed fish consistently showed pro-oxidative responses therein, particularly an increase of gill glutathione peroxidase and glutathione reductase activity, the records doubling compared to samples from sites in the unburnt area; also the activity of glutathione-S-transferases comparatively increased (by 2-fold in the liver) in samples from the burnt area, and malondialdehyde was produced twice as much therein and in samples downstream the burnt area reflecting oxidative damage. Consistently, the frequency of erythrocyte nuclear abnormalities was higher at sites within and downstream the burnt area. This study supports the use of sensitive oxidative stress and genotoxicity biomarkers for an early detection of potentially noxious ecological effects of wildfires runoff.
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Affiliation(s)
- Ana Ré
- CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal
- Department of Biology, University of Aveiro, Aveiro, Portugal
| | | | - Isabel Campos
- CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal
- Department of Environment and Planning, University of Aveiro, Aveiro, Portugal
| | - Sérgio M Marques
- CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal
- Department of Biology, University of Aveiro, Aveiro, Portugal
| | - Jan Jacob Keizer
- CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal
- Department of Environment and Planning, University of Aveiro, Aveiro, Portugal
| | - Fernando J M Gonçalves
- CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal
- Department of Biology, University of Aveiro, Aveiro, Portugal
| | - Joana Luísa Pereira
- CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal.
- Department of Biology, University of Aveiro, Aveiro, Portugal.
| | - Nelson Abrantes
- CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal
- Department of Environment and Planning, University of Aveiro, Aveiro, Portugal
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7
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Kompiš M, Ballová ZK. The influence of preferred habitat and daily range of the European hare on its contamination by heavy metals: a case study from the West Carpathians. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:52093-52105. [PMID: 34002308 DOI: 10.1007/s11356-021-14363-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
The Spišská Magura mountain range, located in the Middle Spiš, is one of the regions in Slovakia most contaminated by heavy metals resulting from mining and smelting activities. Heavy metals and other potentially toxic elements have accumulated in mountain areas via atmospheric transport. The influence of the daily range size of the European hare on its contamination by heavy metals was investigated in three habitat types (forest, woodland edge, meadow) in the Spišská Magura mountain range in the West Carpathians. Individual hares (n = 21) were traced and located by GPS following snowfall. Pair samples of their faeces (n = 64) and food (n = 64) were collected from feeding sites. The maps created were used for determination of the size of the daily range as being small or large. All hares that have a small daily range avoid meadows and open spaces due to the higher predation risk. However, individuals with a large daily range feed in all habitats, including meadows. Hares with a small daily range in a forest habitat ingested higher amounts of bio-elements Ca, Cr, S, and Mn as well as higher amounts of heavy metals Ba and Pb than hares with a large daily range. Moreover, dominant hares with a small daily range, with access to abundant food sources in a forest habitat, may gradually take on higher levels of bio-elements including heavy metals that are present in their food source. In contrast, in the woodland edge, hares with a small daily range had a smaller concentration of Ca, Cr, Mn, S, Ba, and Pb compared to hares with a large daily range. Caecotrophy plays a very significant role as far as the intake of nutrients and other elements is concerned. We found significant dependence between concentrations of the elements Cr, S, Ba, Pb, and Cd in the food of European hares and in their faeces.
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Affiliation(s)
- Martin Kompiš
- Institute of High Mountain Biology, University of Žilina, Javorina 7, SK-05956, Tatranská, Slovakia
| | - Zuzana Kompišová Ballová
- Institute of High Mountain Biology, University of Žilina, Javorina 7, SK-05956, Tatranská, Slovakia.
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8
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Fisher DN, Kilgour RJ, Siracusa ER, Foote JR, Hobson EA, Montiglio PO, Saltz JB, Wey TW, Wice EW. Anticipated effects of abiotic environmental change on intraspecific social interactions. Biol Rev Camb Philos Soc 2021; 96:2661-2693. [PMID: 34212487 DOI: 10.1111/brv.12772] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 06/18/2021] [Accepted: 06/21/2021] [Indexed: 12/30/2022]
Abstract
Social interactions are ubiquitous across the animal kingdom. A variety of ecological and evolutionary processes are dependent on social interactions, such as movement, disease spread, information transmission, and density-dependent reproduction and survival. Social interactions, like any behaviour, are context dependent, varying with environmental conditions. Currently, environments are changing rapidly across multiple dimensions, becoming warmer and more variable, while habitats are increasingly fragmented and contaminated with pollutants. Social interactions are expected to change in response to these stressors and to continue to change into the future. However, a comprehensive understanding of the form and magnitude of the effects of these environmental changes on social interactions is currently lacking. Focusing on four major forms of rapid environmental change currently occurring, we review how these changing environmental gradients are expected to have immediate effects on social interactions such as communication, agonistic behaviours, and group formation, which will thereby induce changes in social organisation including mating systems, dominance hierarchies, and collective behaviour. Our review covers intraspecific variation in social interactions across environments, including studies in both the wild and in laboratory settings, and across a range of taxa. The expected responses of social behaviour to environmental change are diverse, but we identify several general themes. First, very dry, variable, fragmented, or polluted environments are likely to destabilise existing social systems. This occurs as these conditions limit the energy available for complex social interactions and affect dissimilar phenotypes differently. Second, a given environmental change can lead to opposite responses in social behaviour, and the direction of the response often hinges on the natural history of the organism in question. Third, our review highlights the fact that changes in environmental factors are not occurring in isolation: multiple factors are changing simultaneously, which may have antagonistic or synergistic effects, and more work should be done to understand these combined effects. We close by identifying methodological and analytical techniques that might help to study the response of social interactions to changing environments, highlight consistent patterns among taxa, and predict subsequent evolutionary change. We expect that the changes in social interactions that we document here will have consequences for individuals, groups, and for the ecology and evolution of populations, and therefore warrant a central place in the study of animal populations, particularly in an era of rapid environmental change.
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Affiliation(s)
- David N Fisher
- School of Biological Sciences, University of Aberdeen, King's College, Aberdeen, AB24 3FX, U.K
| | - R Julia Kilgour
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, U.S.A
| | - Erin R Siracusa
- Centre for Research in Animal Behaviour, School of Psychology, University of Exeter, Stocker Road, Exeter, EX4 4PY, U.K
| | - Jennifer R Foote
- Department of Biology, Algoma University, 1520 Queen Street East, Sault Ste. Marie, ON, P6A 2G4, Canada
| | - Elizabeth A Hobson
- Department of Biological Sciences, University of Cincinnati, 318 College Drive, Cincinnati, OH, 45221, U.S.A
| | - Pierre-Olivier Montiglio
- Département des Sciences Biologiques, Université du Québec à Montréal, 141 Avenue Président-Kennedy, Montréal, QC, H2X 3X8, Canada
| | - Julia B Saltz
- Department of Biosciences, Rice University, 6100 Main Street, Houston, TX, 77005-1827, U.S.A
| | - Tina W Wey
- Maelstrom Research, The Research Institute of the McGill University Health Centre, Montreal General Hospital, 1650 Cedar Avenue, Montréal, QC, H3G 1A4, Canada
| | - Eric W Wice
- Department of Biosciences, Rice University, 6100 Main Street, Houston, TX, 77005-1827, U.S.A
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9
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Impacts of Human-Induced Pollution on Wild Fish Welfare. Anim Welf 2020. [DOI: 10.1007/978-3-030-41675-1_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Ågerstrand M, Arnold K, Balshine S, Brodin T, Brooks BW, Maack G, McCallum ES, Pyle G, Saaristo M, Ford AT. Emerging investigator series: use of behavioural endpoints in the regulation of chemicals. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2020; 22:49-65. [PMID: 31898699 DOI: 10.1039/c9em00463g] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Interest in behavioural ecotoxicology is growing, partly due to technological and computational advances in recording behaviours but also because of improvements of detection capacity facilitating reporting effects at environmentally relevant concentrations. The peer-reviewed literature now contains studies investigating the effects of chemicals, including pesticides and pharmaceuticals, on migration, dispersal, aggression, sociability, reproduction, feeding and anti-predator behaviours in vertebrates and invertebrates. To understand how behavioural studies could be used in regulatory decision-making we: (1) assessed the legal obstacles to using behavioural endpoints in EU chemicals regulation; (2) analysed the known cases of use of behavioural endpoints in EU chemicals regulation; and (3) provided examples of behavioural endpoints of relevance for population level effects. We conclude that the only legal obstacle to the use of behavioural endpoints in EU chemicals regulation is whether an endpoint is considered to be relevant at the population level or not. We also conclude that ecotoxicity studies investigating behavioural endpoints are occasionally used in the EU chemicals regulation, and underscore that behavioural endpoints can be relevant at the population level. To improve the current use of behavioural studies in regulatory decision-making contribution from all relevant stakeholders is required. We have the following recommendations: (1) researchers should conduct robust, well-designed and transparent studies that emphasize the relevance of the study for regulation of chemicals; (2) editors and scientific journals should promote detailed, reliable and clearly reported studies; (3) regulatory agencies and the chemical industry need to embrace new behavioural endpoints of relevance at the population level.
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Affiliation(s)
- Marlene Ågerstrand
- Department of Environmental Science (ACES), Stockholm University, Stockholm, Sweden.
| | - Kathryn Arnold
- Department of Environment and Geography, University of York, York, UK
| | - Sigal Balshine
- Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Canada
| | - Tomas Brodin
- Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences (SLU), Umeå, Sweden
| | - Bryan W Brooks
- Department of Environmental Science, Institute of Biomedical Studies, Baylor University, Waco, TX, USA and School of Environment, Jinan University, Guangzhou, China
| | - Gerd Maack
- Department of Pharmaceuticals, German Environment Agency (UBA), Dessau, Germany
| | - Erin S McCallum
- Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences (SLU), Umeå, Sweden
| | - Greg Pyle
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada
| | - Minna Saaristo
- School of Biological Sciences, Monash University, Victoria, Australia
| | - Alex T Ford
- Institute of Marine Sciences, University of Portsmouth, Portsmouth, UK
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11
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Pilehvar A, Town RM, Blust R. The interactive effect of copper(II) and conspecific alarm substances on behavioural responses of zebrafish (Danio rerio). Behav Brain Res 2019; 381:112452. [PMID: 31881231 DOI: 10.1016/j.bbr.2019.112452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/11/2019] [Accepted: 12/23/2019] [Indexed: 10/25/2022]
Abstract
Environmental contaminants such as metal ions can have detrimental effects on aquatic organisms at the molecular, organismal and population levels. In the present work, we examined the interactive effect of Cu(II) and conspecific alarm substance on zebrafish behavioural responses utilizing the novel tank diving assay. To this end, 3 novel tank diving tests (on day 0, 3 and 10 of the experimental phase) were conducted on zebrafish in 4 experimental groups: (1) control: no Cu(II) and no alarm substance, (2) Cu(II) only: exposed to 0.78 μM Cu(II) (25 % of the 240 h LC50) in the home tank for 10 days, (3) alarm substance only: exposed to alarm substance for 6 min concomitant with behavioural testing, and (4) Cu(II) + alarm substance: exposed to 0.78 μM Cu(II) in the home tank for 10 days and treated with alarm substance for 6 min during the behavioural testing. Results showed robust habituation response of zebrafish. Exposure to Cu(II) did not affect the behavioural phenotypes of zebrafish in the novel tank diving test or habituation responses. Alarm substance treatment evoked strong anxiety-like behaviour. Finally, zebrafish in the Cu(II) + alarm substance group lost their sensitivity to alarm substance in repeated novel tank assays throughout the concomitant Cu(II) exposure; this observation is tentatively ascribed to Cu(II)-induced olfactory impairment.
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Affiliation(s)
- Ali Pilehvar
- Laboratory of Systemic, Physiological and Ecotoxicological Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
| | - Raewyn M Town
- Laboratory of Systemic, Physiological and Ecotoxicological Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Ronny Blust
- Laboratory of Systemic, Physiological and Ecotoxicological Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
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12
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Nelson JA, Kraskura K, Lipkey GK. Repeatability of Hypoxia Tolerance of Individual Juvenile Striped Bass Morone saxatilis and Effects of Social Status. Physiol Biochem Zool 2019; 92:396-407. [PMID: 31141466 DOI: 10.1086/704010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Chesapeake Bay is the primary nursery for striped bass (Morone saxatilis), which are increasingly being exposed to hypoxic waters. Tolerance to hypoxia in fish is generally determined by a single exposure of an isolated individual or by exposing large groups of conspecifics to hypoxia without regard to social status. The importance of social context in determining physiological responses to stressors is being increasingly recognized. To determine whether social interactions influence hypoxia tolerance (HT) in striped bass, loss of equilibrium HT was assessed in the same fish while manipulating the social environment around it. Small group settings were used to be more representative of the normal sociality experienced by this species than the paired encounters typically used. After establishing the dominance hierarchy within a group of fish, HT was determined collectively for the individuals in that group, and then new groups were constructed from the same pool of fish. Individuals could then be followed across multiple settings for both repeatability of HT and hierarchy position ( X ¯ = 4.2 ± 0.91 SD groups per individual). HT increased with repeated exposures to hypoxia ( P < 0.001 ), with a significant increase by a third exposure ( P = 0.004 ). Despite this changing HT, rank order of HT was significantly repeatable across trials for 6 mo ( P = 0.012 ). Social status was significantly repeatable across trials of different group composition ( P = 0.02 ) and unrelated to growth rate but affected HT weakly in a complex interaction with size. Final HT was significantly correlated with blood [hemoglobin] and hematocrit. The repeatability and large intraspecific variance of HT in juvenile striped bass suggest that HT is potentially an important determinant of Darwinian fitness in an increasingly hypoxic Chesapeake Bay.
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13
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Paschoalini AL, Savassi LA, Arantes FP, Rizzo E, Bazzoli N. Heavy metals accumulation and endocrine disruption in Prochilodus argenteus from a polluted neotropical river. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 169:539-550. [PMID: 30476816 DOI: 10.1016/j.ecoenv.2018.11.047] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 09/21/2018] [Accepted: 11/11/2018] [Indexed: 05/20/2023]
Abstract
Heavy metals are considered major pollutants of aquatic environments due to the difficulty of metabolization and the bioaccumulative potential in tissues of aquatic organisms, especially fish muscle that is often used as food worldwide. In addition to causing cell damage, some metals such as aluminium (Al), cadmium (Cd), copper (Cu), and lead (Pb) can act as endocrine disrupting chemicals in fish. The Paraopeba and Abaete Rivers are important tributaries of the upper São Francisco River basin, but the Paraopeba River receives, along its course, the discharge of many types of effluents that affect fish species, including widely consumed species such as Prochilodus argenteus. This study evaluated histological and molecular changes caused by chronic exposure to heavy metals in P. argenteus from the Paraopeba River and compared this to fish from the non-impacted Abaete River. Sampled fish from both rivers were used in histological analyses and immunohistochemical assays. The results showed increased incidence of histopathologies and changes in number and morphology of germline cells in both sexes. In addition, up-regulated expression of oestrogens-induced proteins in the liver of males were detected in polluted environment. All the alterations were related to the concentration of metals in water and fish. The high concentration of various metals observed in water and fish from Paraopeba River serves as an alert to the environmental and public health regulatory authorities.
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Affiliation(s)
- A L Paschoalini
- Morphology department, Biological Sciences Institute, Federal University of Minas Gerais, UFMG, Belo Horizonte 30161-970, Minas Gerais, Brazil
| | - L A Savassi
- Morphology department, Biological Sciences Institute, Federal University of Minas Gerais, UFMG, Belo Horizonte 30161-970, Minas Gerais, Brazil
| | - F P Arantes
- Post-Graduate Program in Vertebrate Biology, Pontifical Catholic University of Minas Gerais, PUC Minas, Belo Horizonte 30535-610, Minas Gerais, Brazil
| | - E Rizzo
- Morphology department, Biological Sciences Institute, Federal University of Minas Gerais, UFMG, Belo Horizonte 30161-970, Minas Gerais, Brazil
| | - N Bazzoli
- Post-Graduate Program in Vertebrate Biology, Pontifical Catholic University of Minas Gerais, PUC Minas, Belo Horizonte 30535-610, Minas Gerais, Brazil.
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14
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Steele AN, Belanger RM, Moore PA. Exposure Through Runoff and Ground Water Contamination Differentially Impact Behavior and Physiology of Crustaceans in Fluvial Systems. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2018; 75:436-448. [PMID: 29923112 DOI: 10.1007/s00244-018-0542-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
Chemical pollutants enter aquatic systems through numerous pathways (e.g., surface runoff and ground water contamination), thus associating these contaminant sources with varying hydrodynamic environments. The hydrodynamic environment shapes the temporal and spatial distribution of chemical contaminants through turbulent mixing. The differential dispersal of contaminants is not commonly addressed in ecotoxicological studies and may have varying implications for organism health. The purpose of this study is to understand how differing routes of exposure to atrazine alter social behaviors and physiological responses of aquatic organisms. This study used agonistic encounters in crayfish Orconectes virilis as a behavioral assay to investigate impact of sublethal concentrations of atrazine (0, 40, 80, and 160 µg/L) delivered by methods mimicking ground water and surface runoff influx into flow-through exposure arenas for a total of 23 h. Each experimental animal participated in a dyadic fight trial with an unexposed opponent. Fight duration and intensity were analyzed. Experimental crayfish hepatopancreas and abdominal muscle tissue samples were analyzed for cytochrome P450 and acetylcholinesterase levels to discern mechanism of detoxification and mode of action of atrazine. Atrazine delivered via runoff decreased crayfish overall fight intensity and contrastingly ground water delivery increased overall fight intensity. The behavioral differences were mirrored by increases in cytochrome P450 activity, whereas no differences were found in acetylcholinesterase activity. This study demonstrates that method of delivery into fluvial systems has differential effects on both behavior and physiology of organisms and emphasizes the need for the consideration of delivery pathway in ecotoxicological studies and water-impairment standards.
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Affiliation(s)
- Alexandra N Steele
- Laboratory for Sensory Ecology, Department of Biological Sciences, Bowling Green State University, Bowling Green, OH, 43403, USA
- University of Michigan Biological Station, Pellston, MI, 49769, USA
| | | | - Paul A Moore
- Laboratory for Sensory Ecology, Department of Biological Sciences, Bowling Green State University, Bowling Green, OH, 43403, USA.
- University of Michigan Biological Station, Pellston, MI, 49769, USA.
- J.P. Scott Center for Neuroscience, Mind and Behavior, Bowling Green State University, Bowling Green, OH, 43403, USA.
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15
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Saaristo M, Brodin T, Balshine S, Bertram MG, Brooks BW, Ehlman SM, McCallum ES, Sih A, Sundin J, Wong BBM, Arnold KE. Direct and indirect effects of chemical contaminants on the behaviour, ecology and evolution of wildlife. Proc Biol Sci 2018; 285:rspb.2018.1297. [PMID: 30135169 DOI: 10.1098/rspb.2018.1297] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 07/25/2018] [Indexed: 02/06/2023] Open
Abstract
Chemical contaminants (e.g. metals, pesticides, pharmaceuticals) are changing ecosystems via effects on wildlife. Indeed, recent work explicitly performed under environmentally realistic conditions reveals that chemical contaminants can have both direct and indirect effects at multiple levels of organization by influencing animal behaviour. Altered behaviour reflects multiple physiological changes and links individual- to population-level processes, thereby representing a sensitive tool for holistically assessing impacts of environmentally relevant contaminant concentrations. Here, we show that even if direct effects of contaminants on behavioural responses are reasonably well documented, there are significant knowledge gaps in understanding both the plasticity (i.e. individual variation) and evolution of contaminant-induced behavioural changes. We explore implications of multi-level processes by developing a conceptual framework that integrates direct and indirect effects on behaviour under environmentally realistic contexts. Our framework illustrates how sublethal behavioural effects of contaminants can be both negative and positive, varying dynamically within the same individuals and populations. This is because linkages within communities will act indirectly to alter and even magnify contaminant-induced effects. Given the increasing pressure on wildlife and ecosystems from chemical pollution, we argue there is a need to incorporate existing knowledge in ecology and evolution to improve ecological hazard and risk assessments.
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Affiliation(s)
- Minna Saaristo
- School of Biological Sciences, Monash University, Melbourne, Australia
| | - Tomas Brodin
- Department of Ecology and Environmental Science, Umeå University, Sweden.,Department of Wildlife, Fish, and Environmental Studies, SLU, Umeå, Sweden
| | - Sigal Balshine
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Ontario, Canada
| | - Michael G Bertram
- School of Biological Sciences, Monash University, Melbourne, Australia
| | - Bryan W Brooks
- Department of Environmental Science, Baylor University, TX, USA
| | - Sean M Ehlman
- Department of Environmental Science and Policy, University of California, Davis, CA, USA
| | - Erin S McCallum
- Department of Ecology and Environmental Science, Umeå University, Sweden
| | - Andrew Sih
- Department of Environmental Science and Policy, University of California, Davis, CA, USA
| | | | - Bob B M Wong
- School of Biological Sciences, Monash University, Melbourne, Australia
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16
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Heffern K, Tierney K, Gallagher EP. Comparative effects of cadmium, zinc, arsenic and chromium on olfactory-mediated neurobehavior and gene expression in larval zebrafish (Danio rerio). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 201:83-90. [PMID: 29890505 PMCID: PMC6062444 DOI: 10.1016/j.aquatox.2018.05.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 05/22/2018] [Accepted: 05/23/2018] [Indexed: 05/04/2023]
Abstract
Studies have shown that olfactory-mediated behaviors that are critical to survival can be disrupted by exposure to certain metals. Polluted waterways often contain elevated levels of metals, yet only a subset have been characterized for their potential to cause olfactory toxicity. A larval zebrafish behavioral assay was developed to characterize concentration-response curves for zinc (Zn), hexavalent chromium (Cr), and arsenate (As) olfaction inhibition. Cadmium (Cd), an established olfactory toxicant, was used as a positive control. As expected, following a 24-hour exposure to Cd, we observed a reduced response to taurocholic acid (TCA), a substrate for ciliated olfactory sensory neurons (OSNs), thus validating the behavioral assay. Zn exposure similarly decreased the olfactory response toward TCA, (IC50: 36 μg/L and 76 μg/L, for Cd and Zn, respectively). The response towards a secondary odorant L-cysteine (Cys), a substrate for ciliated and microvillous OSNs, was significantly altered by both Cd and Zn exposure, although the response to Cys was not completely removed in Zn treated larvae, suggesting preferential toxicity towards ciliated OSNs. No significant changes in olfactory responses were observed following Cr and As exposures. Exposures to binary mixtures of Cd and Zn indicated that Zn had a protective effect against Cd toxicity at low Zn concentrations. QuantiGene (QDP) RNA analysis revealed Cd to be a potent inducer of metallothionein 2 (mt2) mRNA in zebrafish larvae, and Zn to be a weak mt2 inducer, suggesting a protective role of mt2 in Cd and Zn olfactory injury. By contrast, QDP analysis of eight other genes important in mitigating the effects of oxidative stress suggested an antioxidant response to Cd, but not Zn, As, and Cr suggesting that oxidative stress was not a primary mechanism of Zn-induced olfactory dysfunction. In summary, our study indicates that Zn inhibits zebrafish olfaction at environmental concentrations and may potentially mitigate Cd induced olfactory dysfunction when present in mixtures. The zebrafish behavioral trough assay incorporating the odorants L-cysteine and TCA is an effective assay to assess the effects of metals on olfactory function.
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Affiliation(s)
- Kevin Heffern
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98105-6099, United States
| | - Keith Tierney
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Evan P Gallagher
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98105-6099, United States.
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17
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McKenzie DJ, Blasco FR, Belão TC, Killen SS, Martins ND, Taylor EW, Rantin FT. Physiological determinants of individual variation in sensitivity to an organophosphate pesticide in Nile tilapia Oreochromis niloticus. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 189:108-114. [PMID: 28605647 DOI: 10.1016/j.aquatox.2017.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 05/26/2017] [Accepted: 06/01/2017] [Indexed: 06/07/2023]
Abstract
Individual variation in sub-lethal sensitivity to the organophosphate pesticide trichlorfon was investigated in Nile tilapia, using critical swimming speed (Ucrit) as an indicator. Tilapia exposed for 96h to 500μgl-1 trichlorfon at 26°C (Tcfn group, n=27) showed a significant decline in mean Ucrit, compared to their own control (pre-exposure) performance in clean water (-14.5±2.3%, mean±SEM), but also compared to a Sham group (n=10) maintained for 96h in clean water. Individuals varied in their relative sensitivity to the pesticide, with the decline in Ucrit after exposure varying from 1 to 41%. The Ucrit of the Tcfn group did not recover completely after 96h in clean water, remaining 9.4±3.2% below their own control performance. The decline in performance was associated with a significant increase in net cost of aerobic swimming, of +28.4±6.5% at a sustained speed of 2bodylengthss-1, which translated into a significant decline in swimming efficiency (Eswim) of -17.6±4.0% at that speed. Within the Tcfn group, individual Eswim was a strong positive determinant of individual Ucrit across all trials, and a strong negative determinant of individual% decline in Ucrit after pesticide exposure (P<0.001, linear mixed effect models). Trichlorfon had no effects on standard metabolic rate or active metabolic rate (AMR) but, nonetheless, individual Ucrit in all trials, and% decline in Ucrit after exposure, were strongly associated with individual AMR (positively and negatively, respectively, P<0.001). Individual Ucrit under control conditions was also a strong positive determinant of Ucrit after trichlorfon exposure (P<0.001), but not of the% decline in Ucrit performance. In conclusion, the OP pesticide impaired Ucrit performance by reducing Eswim but individual tilapia varied widely in their relative sensitivity. Intrinsic individual physiology determined effects of the pesticide on performance and, in particular, good swimmers remained better swimmers after exposure.
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Affiliation(s)
- David J McKenzie
- Department of Physiological Sciences, Federal University of São Carlos, São Carlos, SP, Brazil; UMR9190 Centre for Marine Biodiversity Exploitation and Conservation, Université Montpellier, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
| | - Felipe R Blasco
- Department of Physiological Sciences, Federal University of São Carlos, São Carlos, SP, Brazil; Joint Graduate Program in Physiological Sciences, Federal University of São Carlos, UFSCar/São Paulo State University, UNESP Campus Araraquara, Araraquara, SP, Brazil
| | - Thiago C Belão
- Department of Physiological Sciences, Federal University of São Carlos, São Carlos, SP, Brazil; Joint Graduate Program in Physiological Sciences, Federal University of São Carlos, UFSCar/São Paulo State University, UNESP Campus Araraquara, Araraquara, SP, Brazil
| | - Shaun S Killen
- Institute of Biodiversity, Animal Health & Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Nathan D Martins
- Department of Physiological Sciences, Federal University of São Carlos, São Carlos, SP, Brazil; Joint Graduate Program in Physiological Sciences, Federal University of São Carlos, UFSCar/São Paulo State University, UNESP Campus Araraquara, Araraquara, SP, Brazil
| | - Edwin W Taylor
- Department of Physiological Sciences, Federal University of São Carlos, São Carlos, SP, Brazil; School of Biosciences, University of Birmingham, Birmingham BH5 4LU, United Kingdom
| | - F Tadeu Rantin
- Department of Physiological Sciences, Federal University of São Carlos, São Carlos, SP, Brazil
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18
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White SJ, Briffa M. How do anthropogenic contaminants (ACs) affect behaviour? Multi-level analysis of the effects of copper on boldness in hermit crabs. Oecologia 2016; 183:391-400. [DOI: 10.1007/s00442-016-3777-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 11/12/2016] [Indexed: 10/20/2022]
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19
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Williams CR, MacDonald JW, Bammler TK, Paulsen MH, Simpson CD, Gallagher EP. From the Cover: Cadmium Exposure Differentially Alters Odorant-Driven Behaviors and Expression of Olfactory Receptors in Juvenile Coho Salmon (Oncorhynchus kisutch). Toxicol Sci 2016; 154:267-277. [PMID: 27621283 DOI: 10.1093/toxsci/kfw172] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Salmon exposed to waterborne metals can experience olfactory impairment leading to disrupted chemosensation. In the current study, we investigated the effects of cadmium (Cd) on salmon olfactory function by modeling an exposure scenario where juvenile salmon transiently migrate through a polluted waterway. Coho were exposed to environmentally relevant concentrations of waterborne Cd (2 and 30 µg/L) for 48 h and (0.3 and 2 μg/L) for 16 days, followed by a 16-day depuration associated with outmigration. Cadmium exposures inhibited behavioral responses towards L-cysteine and conspecific odorants, with effects persisting following the depuration. Behavioral alterations following the 30 µg/L exposure were associated with increased olfactory epithelial gene expression of metallothionein (mt1a) and heme oxygenase (hmox1); reduced expression of olfactory signal transduction (OST) molecules; and reduced expression of mRNAs encoding major coho odorant receptors (ORs). Salmon OR array analysis indicated that Cd preferentially impacted expression of OST and OR markers for ciliated olfactory sensory neurons (OSNs) relative to microvillus OSNs, suggesting a differential sensitivity of these two major OSN populations. Behavioral alterations on exposure to 0.3 and 2 µg/L Cd were associated with increased mt1a, but not with major histological or OR molecular changes, likely indicating disrupted OST as a major mechanism underlying the behavioral dysfunction at the low-level Cd exposures. Laser-ablation mass spectrometry analysis revealed that the OSN injury and behavioral dysfunction was associated with significant Cd bioaccumulation within the olfactory sensory epithelium. In summary, low-level Cd exposures associated with polluted waterways can induce differential and persistent olfactory dysfunction in juvenile coho salmon.
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Affiliation(s)
- Chase R Williams
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - James W MacDonald
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - Theo K Bammler
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - Michael H Paulsen
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - Christopher D Simpson
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
| | - Evan P Gallagher
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105
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20
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Arantes FP, Savassi LA, Santos HB, Gomes MVT, Bazzoli N. Bioaccumulation of mercury, cadmium, zinc, chromium, and lead in muscle, liver, and spleen tissues of a large commercially valuable catfish species from Brazil. AN ACAD BRAS CIENC 2016; 88:137-47. [PMID: 26871492 DOI: 10.1590/0001-3765201620140434] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 02/13/2015] [Indexed: 11/21/2022] Open
Abstract
The increasing amounts of heavy metals entering aquatic environments can result in high accumulation levels of these contaminants in fish and their consumers, which pose a serious risk to ecosystems and human health. We investigated the concentrations of mercury (Hg), cadmium (Cd), zinc (Zn), chromium (Cr), and lead (Pb) in muscle, liver, and spleen tissues of Pseudoplatystoma corruscans specimens collected from two sites on the Paraopeba River, Brazil. The level of heavy metals concentrations in the tissues was often higher in viscera (i.e. liver and spleen) than in muscle, and thus, the viscera should not be considered for human consumption. Correlations between metal concentrations and fish size were not significant. Although the levels of muscle bioaccumulation of Hg, Cd, Zn, Cr, and Pb, generally do not exceed the safe levels for human consumption, the constant presence of heavy metals in concentrations near those limits considered safe for human consumption, is a reason for concern, and populations who constantly consume fish from polluted rivers should be warned. Our findings also indicate that in a river network where certain areas are connected to other areas with high rates of environmental pollutants, people should be cautious about the regular consumption of fish, even when the fish consumed are caught in stretches of the basin where contamination levels are considered low, since many of the freshwater fish with high commercial value, such as the catfish surubim, are migratory.
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Affiliation(s)
- Fábio P Arantes
- Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Lourenço A Savassi
- Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Hélio B Santos
- Universidade Federal de São João Del Rei, Divinópolis, MG, Brasil
| | - Marcos V T Gomes
- Centro Integrado de Recursos Pesqueiros e Aquicultura de Três Marias, Três Marias, MG, Brasil
| | - Nilo Bazzoli
- Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, MG, Brasil
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21
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SIEBECK UE, O'CONNOR J, BRAUN C, LEIS JM. Do human activities influence survival and orientation abilities of larval fishes in the ocean? Integr Zool 2015; 10:65-82. [DOI: 10.1111/1749-4877.12096] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ulrike E. SIEBECK
- School of Biomedical Sciences; The University of Queensland; Brisbane Australia
| | - Jack O'CONNOR
- Ichthyology; The Australian Museum; Sydney Australia
- Department of Environmental Studies; University of Technology Sydney; Ultimo Australia
| | - Christoph BRAUN
- School of Biomedical Sciences; The University of Queensland; Brisbane Australia
| | - Jeffrey M. LEIS
- Ichthyology; The Australian Museum; Sydney Australia
- Institute for Marine and Antarctic Studies; University of Tasmania; Hobart Australia
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22
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Leonard EM, Marentette JR, Balshine S, Wood CM. Critical body residues, Michaelis-Menten analysis of bioaccumulation, lethality and behaviour as endpoints of waterborne Ni toxicity in two teleosts. ECOTOXICOLOGY (LONDON, ENGLAND) 2014; 23:147-162. [PMID: 24402007 DOI: 10.1007/s10646-013-1159-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/05/2013] [Indexed: 06/03/2023]
Abstract
Traditionally, water quality guidelines/criteria are based on lethality tests where results are expressed as a function of waterborne concentrations (e.g. LC50). However, there is growing interest in the use of uptake and binding relationships, such as biotic ligand models (BLM), and in bioaccumulation parameters, such as critical body residue values (e.g. CBR50), to predict metal toxicity in aquatic organisms. Nevertheless, all these approaches only protect species against physiological death (e.g. mortality, failed recruitment), and do not consider ecological death which can occur at much lower concentrations when the animal cannot perform normal behaviours essential for survival. Therefore, we investigated acute (96 h) Ni toxicity in two freshwater fish species, the round goby (Neogobius melanostomus) and rainbow trout (Oncorhynchus mykiss) and compared LC, BLM, and CBR parameters for various organs, as well as behavioural responses (spontaneous activity). In general, round goby were more sensitive. Ni bioaccumulation displayed Michaelis-Menten kinetics in most tissues, and round goby gills had lower Kd (higher binding affinity) but similar Bmax (binding site density) values relative to rainbow trout gills. Round goby also accumulated more Ni than did trout in most tissues at a given exposure concentration. Organ-specific 96 h acute CBR values tended to be higher in round goby but 96 h acute CBR50 and CBR10 values in the gills were very similar in the two species. In contrast, LC50 and LC10 values were significantly higher in rainbow trout. With respect to BLM parameters, gill log KNiBL values for bioaccumulation were higher by 0.4-0.8 log units than the log KNiBL values for toxicity in both species, and both values were higher in goby (more sensitive). Round goby were also more sensitive with respect to the behavioural response, exhibiting a significant decline of 63-75 % in movements per minute at Ni concentrations at and above only 8 % of the LC50 value; trout exhibited no clear behavioural response. Across species, diverse behavioral responses may be more closely related to tissue Ni burdens than to waterborne Ni concentrations. To our knowledge, this is the first study to link Ni bioaccumulation with behavioural endpoints. In future it would be beneficial to expand these analyses to a wider range of species to determine whether Ni bioaccumulation, specifically in the gills, gut and whole fish, may be a good predictor of behavioural changes from metal exposure; which in the wild can lead to ecological death.
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Affiliation(s)
- Erin M Leonard
- Department of Biology, McMaster University, Life Science Building 208, 1280 Main St. W., Hamilton, ON, L8S 4K1, Canada,
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23
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White SJ, Pipe RK, Fisher A, Briffa M. Asymmetric effects of contaminant exposure during asymmetric contests in the hermit crab Pagurus bernhardus. Anim Behav 2013. [DOI: 10.1016/j.anbehav.2013.07.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Briffa M, de la Haye K, Munday PL. High CO₂ and marine animal behaviour: potential mechanisms and ecological consequences. MARINE POLLUTION BULLETIN 2012; 64:1519-1528. [PMID: 22749063 DOI: 10.1016/j.marpolbul.2012.05.032] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 05/17/2012] [Accepted: 05/21/2012] [Indexed: 06/01/2023]
Abstract
Exposure to pollution and environmental change can alter the behaviour of aquatic animals and here we review recent evidence that exposure to elevated CO₂ and reduced sea water pH alters the behaviour of tropical reef fish and hermit crabs. Three main routes through which behaviour might be altered are discussed; elevated metabolic load, 'info-disruption' and avoidance behaviour away from polluted locations. There is clear experimental evidence that exposure to high CO₂ disrupts the ability to find settlement sites and shelters, the ability to detect predators and the ability to detect prey and food. In marine vertebrates and marine crustaceans behavioural change appears to occur via info-disruption. In hermit crabs and other crustaceans impairment of performance capacities might also play a role. We discuss the implications for such behavioural changes in terms of potential impacts at the levels of population health and ecosystem services, and consider future directions for research.
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Affiliation(s)
- Mark Briffa
- School of Marine Science and Engineering, Plymouth University, Drake Circus, Plymouth PL4 8AA, UK.
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Söffker M, Tyler CR. Endocrine disrupting chemicals and sexual behaviors in fish – a critical review on effects and possible consequences. Crit Rev Toxicol 2012; 42:653-68. [DOI: 10.3109/10408444.2012.692114] [Citation(s) in RCA: 174] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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LeBlanc S, Middleton S, Gilmour KM, Currie S. Chronic social stress impairs thermal tolerance in the rainbow trout (Oncorhynchus mykiss). ACTA ACUST UNITED AC 2011; 214:1721-31. [PMID: 21525319 DOI: 10.1242/jeb.056135] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
When faced with limited resources, juvenile salmonid fish form dominance hierarchies that result in social stress for socially subordinate individuals. Social stress, in turn, can have consequences for the ability of the fish to respond to additional stressors such as pathogens or exposure to pollutants. In the present study, the possibility that social stress affects the ability of rainbow trout (Oncorhynchus mykiss) to tolerate acute increases in water temperature was investigated. To this end, we first evaluated physiological and cellular stress responses following a 1 h heat shock in juvenile fish in dominance hierarchies. We measured stress hormone (cortisol and catecholamines) concentrations and blood, brain and liver tissue levels of three heat shock proteins (HSPs), the stress inducible HSP70, the constitutive HSC70 and HSP90, in dominant and subordinate trout. No effects of social status on the hormonal response to the heat stress were detected, but the cellular heat shock response in the brain and liver of dominant and subordinate individuals was inhibited. We then assessed thermal tolerance in dominant and subordinate fish through critical thermal maximum temperature (CT(max)) trials and measured HSPs following the heat shock. Subordinate fish were less thermally tolerant than their dominant counterparts. We conclude that social stress impacts the ability of fish to respond, on a cellular scale and in a tissue-specific manner, to increases in water temperature, with likely consequences for overall fitness.
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Affiliation(s)
- Sacha LeBlanc
- Department of Biology, Mount Allison University, Sackville, NB E4L 1G7, Canada
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Krause RJ, Grant JW, McLaughlin JD, Marcogliese DJ. Do infections with parasites and exposure to pollution affect susceptibility to predation in johnny darters (Etheostoma nigrum)? CAN J ZOOL 2010. [DOI: 10.1139/z10-089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Johnny darters ( Etheostoma nigrum Rafinesque, 1820) were collected from five localities in the St. Lawrence River in southwestern Quebec to test the effects of natural parasite infections and exposure in situ to pollution on their antipredator behaviour. Three measures of antipredator behaviour were made: (1) capture time (i.e., the time taken to catch individual fish) was used as a proxy for the ability to evade predation, (2) capture order was the order in which fish kept in a single tank were taken from the tank, and (3) flight initiation distance was the distance at which the fish moved when approached by a model predator. Only capture time showed a significant correlation with parasitism or pollution status. A nonparametric permutational multivariate ANOVA showed that capture time was significantly correlated with capture location and the abundance of the brain-encysting trematode Ornithodiplostomum Dubois, 1936. Infection with Ornithodiplostomum sp. may have led to an increase in activity, which would be maladaptive for this cryptic, benthic fish under natural predation conditions. Pollution may have an indirect effect on predator susceptibility in johnny darters, by reducing the abundance of a behaviour-modifying parasite.
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Affiliation(s)
- Rachel J. Krause
- Department of Biology, Concordia University, 7141 Sherbrooke Street West, Montréal, QC H4B 1R6, Canada
- Fluvial Ecosystem Research Section, Aquatic Ecosystem Protection Research Division, Water Science and Technology Directorate, Science and Technology Branch, Environment Canada, St. Lawrence Centre, 105 McGill Street, 7th Floor, Montréal, QC H2Y 2E7, Canada
| | - James W.A. Grant
- Department of Biology, Concordia University, 7141 Sherbrooke Street West, Montréal, QC H4B 1R6, Canada
- Fluvial Ecosystem Research Section, Aquatic Ecosystem Protection Research Division, Water Science and Technology Directorate, Science and Technology Branch, Environment Canada, St. Lawrence Centre, 105 McGill Street, 7th Floor, Montréal, QC H2Y 2E7, Canada
| | - J. Daniel McLaughlin
- Department of Biology, Concordia University, 7141 Sherbrooke Street West, Montréal, QC H4B 1R6, Canada
- Fluvial Ecosystem Research Section, Aquatic Ecosystem Protection Research Division, Water Science and Technology Directorate, Science and Technology Branch, Environment Canada, St. Lawrence Centre, 105 McGill Street, 7th Floor, Montréal, QC H2Y 2E7, Canada
| | - David J. Marcogliese
- Department of Biology, Concordia University, 7141 Sherbrooke Street West, Montréal, QC H4B 1R6, Canada
- Fluvial Ecosystem Research Section, Aquatic Ecosystem Protection Research Division, Water Science and Technology Directorate, Science and Technology Branch, Environment Canada, St. Lawrence Centre, 105 McGill Street, 7th Floor, Montréal, QC H2Y 2E7, Canada
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29
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Sopinka NM, Marentette JR, Balshine S. Impact of contaminant exposure on resource contests in an invasive fish. Behav Ecol Sociobiol 2010. [DOI: 10.1007/s00265-010-1005-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Eissa BL, Ossana NA, Ferrari L, Salibián A. Quantitative behavioral parameters as toxicity biomarkers: fish responses to waterborne cadmium. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2010; 58:1032-1039. [PMID: 19967392 DOI: 10.1007/s00244-009-9434-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Accepted: 11/08/2009] [Indexed: 05/28/2023]
Abstract
The disruptive sublethal effects of heavy metals on behavioral parameters of fish as biomarkers of aquatic toxicity have been scarcely studied. We investigated the impact of exposure to sublethal waterborne cadmium on locomotory parameters of three freshwater teleosts: Cyprinus carpio as reference species, and Australoheros facetum (sin. Cichlasoma facetum) and Astyanax fasciatus, native to Pampean ecosystems in Argentina, using a noninvasive bioassay under laboratory conditions. Fish were successively transferred to media containing freshwater (control period), Cd(2+) solutions (exposure period), and freshwater (recovery period). The behavioral biomarkers evaluated were swimming activity and swimming speed of fish. The metal provoked different responses of both parameters after 4-7 days of exposure; the reversibility of changes was also assessed. It was concluded that: (a) locomotion parameters are sensitive endpoints and useful biomarkers in behavioral studies of freshwater toxicity, (b) the applied bioassay could be a valuable tool in water quality monitoring, and (c) the studied species differed in their susceptibility to the toxicant as well as in their capacity to return to basal values.
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Affiliation(s)
- B L Eissa
- Applied Ecophysiology Program, Basic Sciences Department, National University of Lujan, PO Box 221, 6700 Lujan, Argentina
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Boyd RS. Heavy Metal Pollutants and Chemical Ecology: Exploring New Frontiers. J Chem Ecol 2010; 36:46-58. [DOI: 10.1007/s10886-009-9730-5] [Citation(s) in RCA: 178] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2009] [Revised: 11/20/2009] [Accepted: 12/14/2009] [Indexed: 12/29/2022]
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Chapman BB, Morrell LJ, Tosh CR, Krause J. Behavioural consequences of sensory plasticity in guppies. Proc Biol Sci 2010; 277:1395-401. [PMID: 20053643 DOI: 10.1098/rspb.2009.2055] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Sensory plasticity, whereby individuals compensate for sensory deprivation in one sense by an improvement in the performance of an alternative sense, is a well-documented phenomenon in nature. Despite this, the behavioural and ecological consequences of sensory plasticity have not been addressed. Here we show experimentally that some components (vision and chemoreception) of the sensory system of guppies are developmentally plastic, and that this plasticity has important consequences for foraging behaviour. Guppies reared under low light conditions had a significantly stronger response to chemical food cues encountered in isolation than fish reared at higher light levels. Conversely, they exhibited a weaker response to visual-only cues. When visual and olfactory/gustatory cues were presented together, no difference between the strength of response for fish reared at different light intensities was evident. Our data suggest that guppies can compensate for experience of a visually poor, low light environment via a sensory switch from vision to olfaction/gustation. This switch from sight to chemoreception may allow individuals to carry out the foraging behaviour that is essential to their survival in a visually poor environment. These considerations are especially important given the increasing frequency of anthropogenic changes to ecosystems. Compensatory phenotypic plasticity as demonstrated by our study may provide a hitherto unconsidered buffer that could allow animals to perform fundamental behaviours in the face of considerable change to the sensory environment.
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Affiliation(s)
- Ben B Chapman
- Institute of Integrative and Comparative Biology, University of Leeds, , Leeds LS2 9JT, UK.
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Almeida JA, Barreto RE, Novelli ELB, Castro FJ, Moron SE. Oxidative stress biomarkers and aggressive behavior in fish exposed to aquatic cadmium contamination. NEOTROPICAL ICHTHYOLOGY 2009. [DOI: 10.1590/s1679-62252009000100013] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The objective of this study was to investigate the possible link between cadmium exposure, hepatic markers of oxidative stress and aggressive behavior in Nile tilapia (Oreochromis niloticus). Fish were first exposed to 0.75 mg/L CdCl2 for 15 days (12 isolated fish for each group) and afterward a behavioral test was performed. Fish from the control and cadmium-exposed groups were paired for 1 h (6 pairs of fish per group) for determination of aggressiveness parameters. Immediately after the behavioral test, the animals were sacrificed and the liver was used to determine biochemical parameters. Cadmium decreased aggression in Nile tilapia. Subordinate animals exposed to cadmium showed decreased glutathione peroxidase (GSH-Px) activity compared to dominant ones. No alterations were observed in selenium-dependent glutathione peroxidase Se-GSH-P and Cu-Zn superoxide dismutase activities, but total superoxide dismutase activity was increased in subordinate animals exposed to cadmium compared to subordinate control. Catalase activity was increased in cadmium-exposed fish. Lipoperoxide concentrations also increased in cadmium exposed fish indicating that cadmium toxicity may affect oxidative stress biomarkers in Nile tilapia. Social stress induced lipoperoxidation in Nile tilapia, and subordinate animals exposed to cadmium responded with lower activities of liver antioxidant enzymes compared to dominant fish. The present study shows that cadmium exposure is capable of inducing changes in the social status and oxidative stress parameters in this species.
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Mirza RS, Green WW, Connor S, Weeks ACW, Wood CM, Pyle GG. Do you smell what I smell? Olfactory impairment in wild yellow perch from metal-contaminated waters. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2009; 72:677-683. [PMID: 19108892 DOI: 10.1016/j.ecoenv.2008.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2008] [Revised: 09/30/2008] [Accepted: 10/01/2008] [Indexed: 05/27/2023]
Abstract
In this study, we sampled yellow perch from three lakes along a metal-contamination gradient and examined their olfactory ability in response to conspecific chemical alarm cues and metal-binding characteristics of their olfactory epithelium (OE). We measured the electrophysiological response at the OE, tested their antipredator behaviour and measured neuronal density at the olfactory rosette and bulb. Yellow perch from contaminated lakes exhibited significantly larger electrophysiological responses to alarm cues than clean lake fish, but showed no antipredator behaviour contrary to clean lake fish. Neuron density did not differ at either the olfactory rosette or bulb between clean and contaminated fish. Unlike fishes raised under laboratory or aquaculture settings, fish from contaminated lakes possessed a functional OE after metal exposure, but similar to laboratory/aquaculture fishes, yellow perch did not exhibit olfactory-mediated behaviours. Thus, wild fish from contaminated lakes can detect chemical stimuli but olfactory signal processing is disrupted which could alter ecological functioning.
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Affiliation(s)
- R S Mirza
- Department of Biology, McMaster University, Hamilton, ON, Canada
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35
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Sloman K, Baker D, Winberg S, Wilson R. Are there physiological correlates of dominance in natural trout populations? Anim Behav 2008. [DOI: 10.1016/j.anbehav.2008.06.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Kreke N, Dietrich DR. Physiological endpoints for potential SSRI interactions in fish. Crit Rev Toxicol 2008; 38:215-47. [PMID: 18324517 DOI: 10.1080/10408440801891057] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Selective serotonin reuptake inhibitors (SSRIs) are among the pharmaceutical compounds frequently detected in sewage treatment plant effluents and surface waters, albeit at very low concentrations, and have therefore become a focus of interest as environmental pollutants. These neuroactive drugs are primarily used in the treatment of depression but have also found broader use as medication for other neurological dysfunctions, consequently resulting in a steady increase of prescriptions worldwide. SSRIs, via inhibition of the serotonin (5-hydroxytryptamine, 5-HT) reuptake mechanism, induce an increase in extracellular 5-HT concentration within the central nervous system of mammals. The phylogenetically ancient and highly conserved neurotransmitter and neurohormone 5-HT has been found in invertebrates and vertebrates, although its specific physiological role and mode of action is unknown for many species. Consequently, it is difficult to assess the impact of chronic SSRI exposure in the environment, especially in the aquatic ecosystem. In view of this, the current knowledge of the functions of 5-HT in fish physiology is reviewed and, via comparison to the physiological role and function of 5-HT in mammals, a characterization of the potential impact of chronic SSRI exposure on fish is provided. Moreover, the insight on the physiological function of 5-HT strongly suggests that the experimental approaches currently used are inadequate if not entirely improper for routine environmental risk assessment of pharmaceuticals (e.g., SSRIs), as relevant endpoints are not assessed or impossible to determine.
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Affiliation(s)
- N Kreke
- Environmental Toxicology, Department of Biology, University of Konstanz, Konstanz, Germany
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Ward AJW, Duff AJ, Horsfall JS, Currie S. Scents and scents-ability: pollution disrupts chemical social recognition and shoaling in fish. Proc Biol Sci 2008; 275:101-5. [PMID: 17956844 DOI: 10.1098/rspb.2007.1283] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Chemical cues are of enormous importance in mediating the behaviour of animals, enabling them to navigate throughout their habitats, to detect the presence of predators or prey and for social recognition-identifying and discriminating between conspecifics. In many species of freshwater fish, social recognition is known to be based primarily on chemical cues. Such recognition mechanisms are vulnerable to disruption by the presence of anthropogenic contaminants in the aquatic environment. Here we show that acute exposure to low, environmentally relevant dosages of the ubiquitous contaminant, 4-nonylphenol, can seriously affect social recognition and ultimately social organization in fishes. A 1 hour 0.5 microgl-1 dose was sufficient to alter the response of members of a shoaling fish species (juvenile banded killifish, Fundulus diaphanus) to conspecific chemical cues. Dosages of 1-2 microgl-1 caused killifish to orient away from dosed conspecifics, in both a flow channel and an arena. Given the overall importance of shoaling as an adaptive strategy against predators and for locating food, it is likely that its disruption by anthropogenic contaminants would have serious implications for fishes' fitness.
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Affiliation(s)
- Ashley J W Ward
- Department of Biology, Mount Allison University, Sackville, New Brunswick, Canada E4L 1G7.
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