00000nam 2200000za 4500 9.856919 CaOODSP 20230509115942 cr ||||||||||| 180524s2018 nkcabd ob f000 0 eng d 9780660266886 CaOODSP eng eng fre n-cn-pi Fs97-6/3263E-PDF Sonier, R. (Rémi) author. Feeding pressure of Mytilus edulis and Styela clava on phytoplankton and zooplankton, including lobster larvae (stages I and IV) / by R. Sonier … [et al.]. Moncton, N.B. : Fisheries and Oceans Canada, Gulf Fisheries Centre, 2018. vi, 19 p. : col. chart, col. ill., col. map. Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3263 Includes bibliographical references. "This report provides insight on feeding pressures of cultivated blue mussels Mytilus edulis and the invasive solitary tunicate Styela clava on phytoplankton and zooplankton, including American lobster (Homarus americanus) larvae (stages I and IV). In 2015-2016, experiments were conducted in a portable aquatic laboratory on Prince Edward Island (PEI) using natural sea water. Average standardized (for 1g of dried tissue weight) clearance rates (CR) were of 12.5 ± 1.12 Lh-1g-1 and 6.7 ± 0.7 Lh-1g-1 for mussels and tunicates respectively. Scaling up these results to a bay scale model that integrates mussels and tunicates feeding pressures on phytoplankton in Malpeque Bay (PEI) showed the importance of mitigation measures and treatment regimes on tunicate populations. A retention of zooplankton was detected at approximately 35 ± 9.4% and 28 ± 9.0 % by mussels and tunicates respectively with a slight preference for copepods. As for predation on lobster larvae (both stages I and IV), M. edulis and S. clava demonstrated no retention or capture of lobster larvae, even at densities which surpass significantly natural lobster larvae abundance in the natural environment. It is anticipated that the information presented in this report will serve in future modelling and management analysis"--Abstract, p. vi. Includes abstract in French. Canada. Department of Fisheries and Oceans, issuing body. Gulf Fisheries Centre (Canada), issuing body. Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3263. (CaOODSP)9.504449 PDF 825 KB https://publications.gc.ca/collections/collection_2018/mpo-dfo/Fs97-6-3263-eng.pdf