Bioenergetic responses of the marine bivalve Venus verrucosa on long-term exposure to petroleum hydrocarbons |
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| Affiliation: | 1. Department of Endocrinology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Gronostajowa 9, 30-387 Krakow, Poland;2. Department of Animal Physiology and Endocrinology, University of Agriculture in Krakow, Al. Mickiewicza 24/28, 30-059 Krakow, Poland;3. Department of Physiology and Reproduction of Animals, Institute of Biotechnology, University of Rzeszow, Werynia 502, 36-100 Kolbuszowa, Poland;1. Department of Biochemistry, College of Medicine and Health Sciences, United Arab Emirates University, 17666 Al Ain, United Arab Emirates;2. SAAD Centre for Pharmacy and Diabetes, School of Biomedical Sciences, University of Ulster, Coleraine BT52 1SA, UK;3. PISSARO, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, 76821 Mont-Saint-Aignan, France;4. CNRS UMR 6270, University of Rouen, 76821 Mont-Saint-Aignan, France;5. INSERM U-982, PRIMACEN, CNRS, IRIB, University of Rouen, 76821 Mont-Saint-Aignan, France;6. Centre for Invasion Biology, Department of Botany & Zoology, Stellenbosch University, Stellenbosch, South Africa;1. Department of Food Biotechnology and Nutritional Sciences, Nelson Mandela African Institution of Science and Technology (NM-AIST), P.O. Box 447, Arusha, Tanzania;2. Department of Sustainable Agriculture, Biodiversity and Ecosystems Management, Nelson Mandela African Institution of Science and Technology, P.O. Box 447, Arusha, Tanzania;3. Centre for Research, Agricultural Advancement, Teaching Excellence and Sustainability in Food and Nutrition Security (CREATES, FNS), Nelson Mandela African Institution of Science and Technology, P.O. Box 447, Arusha, Tanzania;1. Plant Biotechnology Centre, S.K. Rajasthan Agricultural University, Bikaner 334 006, India;2. Department of Agricultural Biotechnology, Anand Agricultural University, Anand 388 110, India |
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| Abstract: | A number of physiological responses of the bivalve Venus verrucosa on exposure to low levels of water accommodated fractions of Kuwait crude oil (100 μg litre−1) for 145 days were investigated in the laboratory. Such exposure led to significant decreases in clearance or feeding rates and in the food absorption efficiencies, as well as enhanced oxygen consumption and ammonia excretion. The integration of such physiological responses to assess the scope for growth, as well as the oxygen to nitrogen ratio, indicated that such exposure led to a significant drop in the energy available for somatic growth and reproduction and enhanced protein catabolism (this being indicative of stressed conditions). These results were also confirmed by significant reductions in several body condition indices of the exposed bivalves relative to the controls. The ecological significance of such results is discussed. |
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