Richard McGarvey, Fredric Serchuk, and Ian A. McLaren
Department of Biology, Dalhousie University
Halifax, Nova Scotia, Canada B3H 4J1
Source - Journal of Northwest Atlantic Fishery Science, Volume 13: 83-99
ISSN-0250-6408
McGarvey, R. Serchuk, F., and McLaren, I.A. 1992. Statistics of Reproduction and early Life History Survival of the Georges Bank Sea Scallop (Placopecten magellanicus) Population. J. Northw. Atl. Fish. Sci. 13: 83-99. https://doi.org/10.2960/J.v13.a7
Abstract
In a spatial analysis of the Georges Bank sea scallop (Placopecten magellanicus) population, variables of population reproduction and abundance are calculated from Canadian and USA research survey size-frequency data. Using commercial catch as a scaling factor to obtain absolute estimates, the time averages of harvestable-sized population numbers and meat-weight biomass, annual recruit numbers, and egg production were calculated from 1977 to 1988 for five principal subregions of Georges Bank. Average survival from egg to age 2 was obtained directly.
Incorporating recent field sampling measurements of larval densities in the water column, survival and thus natural mortality was estimated for egg to larva and larva to age 2 juvenile. The size-specific fecundity vector was also employed in a lifetime egg production-per-recruit analysis. Detailed error analysis of the scaling coefficient and sensitivity analysis of potential error due to gear selectivity were combined into confidence intervals for the estimated population statistics.
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Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - December 1992
Publication Type - Journal Article
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