caa a22 4500 605464723 CHVBK 20210128100259.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10499-014-9866-3 doi (NATIONALLICENCE)springer-10.1007/s10499-014-9866-3 Survival and growth performance of Crassostrea virginica along an estuarine gradient [Elektronische Daten] [D. Méthé, L. Comeau, H. Stryhn, T. Guyondet, J. Burka, T. Landry, J. Davidson] In Eastern Canada, an increasing number of pests, predators and pathogens in downriver areas (close to the ocean) have led the aquaculture industry to consider growing oysters in upriver areas (close to the river source). In this study, oyster growth performance was compared between downriver and upriver environments by means of stock transfer experiments within the Richibucto estuary. In May 2009, seed oysters (~26mm shell height) originating from two downriver sites (salinity ~20-30‰) were transferred upriver (salinity ~5-20‰). Follow-up measurements in October 2009 revealed that the seed transferred upriver grew and survived as well as seed that remained downriver, while the mortality rates of adult oysters (shell height ~66mm) were lower at the upriver site. Meat content was unaffected in adult oysters transferred upriver. However, there were indications that the upriver environment promoted shell growth (mm) in adult oysters. Oysters transferred upriver had a gain in shell height (LSM±SE) over the oysters that remained downriver (2.7±0.5 vs. 1.8±0.5mm) and in shell width [Median (95% CI); 2.8mm (1.9, 3.6) vs. 1.0mm (0.3, 1.2)]. Therefore, the holding of adult oysters upriver during the spring-summer period confers productivity advantages on top of protection from diseases and predation. By contrast, productivity losses were recorded when relocating adult oysters originating from the upriver environment. More specifically, final organic meat content were approximately 35% less in adult oysters transferred downriver compared to those that remained upriver (0.48±0.04 vs. 0.74±0.04g). Results suggest that transfers along the river impact physiological processes such as gametogenesis and shell formation in adult oysters. Springer International Publishing Switzerland, 2014 Oyster nationallicence Salinity nationallicence Shellfish productivity nationallicence Upriver nationallicence Relaying nationallicence Méthé D. Department of Fisheries and Oceans, Science Branch, Gulf Fisheries Center, P.O. Box 5030, E1C 9B6, Moncton, NB, Canada aut Comeau L. Department of Fisheries and Oceans, Science Branch, Gulf Fisheries Center, P.O. Box 5030, E1C 9B6, Moncton, NB, Canada aut Stryhn H. Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, C1A 4P3, Charlottetown, PE, Canada aut Guyondet T. Department of Fisheries and Oceans, Science Branch, Gulf Fisheries Center, P.O. Box 5030, E1C 9B6, Moncton, NB, Canada aut Burka J. Department of Biomedical Sciences, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, C1A 4P3, Charlottetown, PE, Canada aut Landry T. Department of Fisheries and Oceans, Science Branch, Gulf Fisheries Center, P.O. Box 5030, E1C 9B6, Moncton, NB, Canada aut Davidson J. Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, C1A 4P3, Charlottetown, PE, Canada aut Aquaculture International Springer International Publishing 23/4(2015-08-01), 1089-1103 0967-6120 23:4<1089 2015 23 10499 https://doi.org/10.1007/s10499-014-9866-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10499-014-9866-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Méthé D. Department of Fisheries and Oceans, Science Branch, Gulf Fisheries Center, P.O. Box 5030, E1C 9B6, Moncton, NB, Canada aut NATIONALLICENCE 700 1- Comeau L. Department of Fisheries and Oceans, Science Branch, Gulf Fisheries Center, P.O. Box 5030, E1C 9B6, Moncton, NB, Canada aut NATIONALLICENCE 700 1- Stryhn H. Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, C1A 4P3, Charlottetown, PE, Canada aut NATIONALLICENCE 700 1- Guyondet T. Department of Fisheries and Oceans, Science Branch, Gulf Fisheries Center, P.O. Box 5030, E1C 9B6, Moncton, NB, Canada aut NATIONALLICENCE 700 1- Burka J. Department of Biomedical Sciences, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, C1A 4P3, Charlottetown, PE, Canada aut NATIONALLICENCE 700 1- Landry T. Department of Fisheries and Oceans, Science Branch, Gulf Fisheries Center, P.O. Box 5030, E1C 9B6, Moncton, NB, Canada aut NATIONALLICENCE 700 1- Davidson J. Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, C1A 4P3, Charlottetown, PE, Canada aut NATIONALLICENCE 773 0- Aquaculture International Springer International Publishing 23/4(2015-08-01), 1089-1103 0967-6120 23:4<1089 2015 23 10499