00000nam 2200000zi 4500 9.956873 CaOODSP 20251030080626 m o d f cr mn||||||||| 251030e198908##bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x8x8 Fs97-4/2037E-PDF Fs97-4/2037E Haegele, C. W., author. Egg loss from Pacific herring spawns in Barkley Sound in 1988 / by C.W. Haegele and J.F. Schweigert. Nanaimo, British Columbia : Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, August 1989. ©1989 1 online resource (iii, 37 pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 2037 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (page 7). "Herring spawn was sampled throughout the incubation period in Barkley Sound, British Columbia, at 38 stations on 8 transects extending from the inshore to the offshore limits of egg deposition. Egg predators were identified and enumerated. About 22,000 birds (chiefly gulls and diving ducks), 26 million invertebrates (starfish and snails), and 8 gray whales consumed the eggs from an estimated 271, 1021, and 235 tonnes of herring, respectively. This predation accounted for about 20% of the eggs deposited in the study area. Spawn measurements (sample weight and eggs on vegetation) and observations (% cover of vegetation, plant height, egg layers on vegetation, and eggs on bottom substrate), varied considerably, making it difficult to determine where and how eggs were lost, or to substantiate the egg loss attributed to predators"--Abstract, page iii. Includes abstracts in English and French. Pacific herring Eggs British Columbia Barkley Sound. Pacific herring Effect of predation on British Columbia Barkley Sound. Hareng du Pacifique Œufs Colombie-Britannique Barkley, Baie. Hareng du Pacifique Effets de la prédation sur Colombie-Britannique Barkley, Baie. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; no. 2037. (CaOODSP)9.505211 PDF 567 KB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-2037-eng.pdf