Size-selectivity of the Northwest Atlantic sea scallop (Placopecten magellanicus) dredge

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Yochum, N., & Dupaul, W. D. (2008). Size-selectivity of the Northwest Atlantic sea scallop (Placopecten magellanicus) dredge. Journal of Shellfish Research, 27(2), 265-271. doi:10.2983/0730-8000(2008)27[265:SOTNAS]2.0.CO;2
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TitleSize-selectivity of the Northwest Atlantic sea scallop (Placopecten magellanicus) dredge
AuthorsN. Yochum, W. Dupaul
AbstractA size-selectivity curve was constructed to characterize the performance of the New Bedford style Atlantic sea scallop (Placopecten magellanicus, Gmelin 1791) dredge when it is configured to meet the requirements of Amendment #10 to the Sea Scallop Fishery Management Plan. The curve was generated using the SELECT model on catch-at-length data, obtained by simultaneously towing a New Bedford style dredge and a nonselective National Marine Fisheries Service sea scallop survey dredge from commercial scallop vessels. Data were collected during three cruises in the Northwest Atlantic between 2005 and 2006. The resultant selectivity curve yielded a 50% retention length of 100.1 mm, a selection range of 23.6 mm, and a value of 0.77 for the efficiency of the commercial dredge relative to the survey dredge. A length of 100.1 mm corresponds to a meat weight of 17.2 g in Georges Bank and 16.8 g in the mid-Atlantic. These results can assist fisheries managers with stock assessments, fishing mortality estimates, and the interpretation of catch data from resource surveys. Additionally, the curve can be used as a baseline to evaluate the effect of future changes to sea scallop dredge configuration.
JournalJournal of Shellfish Research
Date2008
Volume27
Issue2
Start page265
End page271
ISSN0730-8000
SubjectsPlacopecten magellanicus
NoteCited By (since 1996):6, Invertebrates, Fish and Fisheries, CODEN: JSHRD, Downloaded from www.bioone.org (16 June 2014).

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