00000nam 2200000zi 4500 9.932598 CaOODSP 20240117123713 m o d f cr mn||||||||| 240117e197901 bcc ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre Fs97-4/1498E-PDF Fs97-4/1498 Breen, P. A., author. Selective feeding of the sunflower star, Pycnopodia helianthoides, in the laboratory / by Paul A. Breen. Nanaimo, British Columbia : Department of Fisheries and the Environment, Fisheries and Marine Service, Resource Services Branch, Pacific Biological Station, January 1979. ©1979 1 online resource (iii, 10 pages). text txt rdacontent computer c rdamedia online resource cr rdacarrier Fisheries and Marine Service manuscript report, 0701-7618 ; 1498 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 5-6). "Six invertebrate prey were offered to the sunflower starfish, Pycnopodia helianthoides, in order to measure their selective feeding rate on green sea urchins (Strongylocentrotus droebachiensis). Highly selective feeding was observed, in this order from most to least selected: manila clams (Venerupis japonica), butter clams (Saxidomus giganteus), native littleneck clams (Protothaca staminea), green sea urchins, red sea urchins (S. franciscanus) and Pacific oysters (Crassostrea gigas). These results do not support the idea that Pycnopodia are an important limiting predator on green sea urchins. They may limit the lower distribution of Manila clams in the intertidal zone. Feeding rates calculated from this study were estimated to be 28 kg wet wt/adult/year"--Abstract, page iii. Includes abstracts in English and French. Pycnopodia helianthoides Food. Predation (Biology) Green sea urchin Predators of. Astériidés Alimentation. Prédation (Biologie) Oursin vert Prédateurs. Canada. Fisheries and Marine Service, issuing body. Pacific Biological Station (1972- ), issuing body. Manuscript report (Canada. Fisheries and Marine Service) no. 1498. (CaOODSP)9.924185 PDF 695 KB https://publications.gc.ca/collections/collection_2024/mpo-dfo/fs97-4/Fs97-4-1498-eng.pdf