Relationships between intertidal clam population and health status of the soft-shell clam Mya arenaria in the St. Lawrence Estuary and Saguenay Fjord (Québec, Canada)
| Autor: | Marie-José Durand, André J. Talbot, François Gagné, Jocelyne Pellerin, Michel Fournier, Christian Blaise |
|---|---|
| Přispěvatelé: | Fluvial Ecosystem Research, Environment and Climate Change Canada, Aquatic Ecosystem Protection Researc Division, Institut des Sciences de la MER de Rimouski (ISMER), Université du Québec à Rimouski (UQAR), Traitement Eau Air Métrologie (GEPEA-TEAM), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL), Fluvial Ecosystems Research, Aquatic Ecosystems Research Protection Branch, Institut Armand Frappier (INRS-IAF), Institut National de la Recherche Scientifique [Québec] (INRS)-Réseau International des Instituts Pasteur (RIIP) |
| Rok vydání: | 2008 |
| Předmět: |
Male
MESH: Vitellogenins Hemocytes MESH: Quebec Mya Cell Count 010501 environmental sciences MESH: Phagocytes 01 natural sciences MESH: Lipid Peroxidation MESH: DNA Breaks Vitellogenins Organotin Compounds Water Pollution Chemical MESH: Animals Mollusca lcsh:Environmental sciences ComputingMilieux_MISCELLANEOUS Glutathione Transferase General Environmental Science lcsh:GE1-350 Phagocytes 0303 health sciences education.field_of_study geography.geographical_feature_category biology Ecology Quebec MESH: Water Pollution Chemical Lipids Mitochondria medicine.anatomical_structure MESH: Trialkyltin Compounds [SDV.TOX]Life Sciences [q-bio]/Toxicology Female Soft-shell clam animal structures Gonad MESH: Mitochondria MESH: Mya Population Intertidal zone Electron Transport MESH: Organotin Compounds MESH: Gonads 03 medical and health sciences medicine Animals 14. Life underwater Gonads MESH: Electron Transport education 030304 developmental biology 0105 earth and related environmental sciences MESH: Glutathione Transferase geography Models Statistical MESH: Cell Count DNA Breaks MESH: Biological Markers MESH: Hemocytes Estuary biology.organism_classification Bivalvia MESH: Lipids MESH: Male Salinity MESH: Germ Cells Germ Cells Lipid Peroxidation Trialkyltin Compounds [SDE.BE]Environmental Sciences/Biodiversity and Ecology MESH: Female Biomarkers MESH: Models Statistical |
| Zdroj: | Environment International Environment International, Elsevier, 2008, 34 (1), pp.30-43. ⟨10.1016/j.envint.2007.06.010⟩ Environment International, Vol 34, Iss 1, Pp 30-43 (2008) |
| ISSN: | 0160-4120 |
| DOI: | 10.1016/j.envint.2007.06.010 |
| Popis: | The purpose of this study was to examine the impacts of anthropogenic activity on the health status of intertidal clam populations of the Saguenay Fjord and the St. Lawrence Estuary (Québec, Canada). Clams were collected during low tide at sites subject to direct contamination and at sites far from human activity. Clams were analyzed for tributyltin and dibutyltin total levels and toxic stress (glutathione S-transferase, gonadal lipid peroxidation and DNA strand breaks), immunocompetence (phagocytic activity, hemocyte count and viability), reproduction (gonado-somatic index, gamete maturation, and vitellogenin-like proteins), energy status (temperature-dependent mitochondrial electron transport, and gonad lipids), and individual status (age, condition factor, and growth index). These responses were compared against population characteristics such as live clam density, number of empty shells, and sex ratio. The results show that clam density decreased with distance from the estuary (high salinity level) to upstream of the fjord (low salinity). There was no clear relationship between the number of empty shells and distance or site quality. Clam density values corrected against distance were significantly correlated with hemocyte viability, phagocytic activity, mitochondrial electron transport (MET), DNA damage in gonad, and temperature-dependent mitochondrial electron transport activity. A canonical analysis of the various groups of biomarkers revealed that population metrics were more strongly related with immunocompetence, followed by energy status and temperature-dependent mitochondrial electron transport activity. However, toxic stress biomarkers were strongly associated with energy status and reproduction. This was further confirmed by non-linear modeling using adaptive artificial neural networks (genetic selection and back propagation learning paradigms), where the following parameters were able to predict population parameters with |
| Databáze: | OpenAIRE |
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