Document Type
Article
Department/Program
Virginia Institute of Marine Science
Publication Date
9-2020
Journal
ICES Journal of Marine Science
Volume
77
Issue
5
First Page
1992
Last Page
2002
Abstract
We examined evidence for larval spillover (increased recruitment outside the closures) of Atlantic sea scallops (Placopecten magellanicus) due to rotational closures in the Mid-Atlantic Bight using a 40-year fisheries survey time series and a larval transport model. Since the first closure of the Hudson Canyon South (HCS) area in 1998, mean recruitment in the two areas directly down-current from this closure, Elephant Trunk (ET) and Delmarva (DMV), increased significantly by factors of about 7 and 2, respectively. Stock–recruit plots indicate that low biomasses in HCS were associated with reduced mean recruitment in ET and DMV. Simulations indicate that larvae spawned in HCS often settle in the two downstream areas and that model-estimated settlement (based on gonad biomass in HCS and year-specific larval transport between the areas) is correlated with observed recruitment. This study gives strong evidence that the rotational closure of HCS has induced increased recruitment in down-current areas.
DOI
doi: 10.1093/icesjms/fsaa099
Publication Statement
This work is in the public domain in the US.
Recommended Citation
Hart, Deborah R.; Munroe, Daphne M.; Caracappa, Joseph C.; Haidvogel, Dale; Shank, Burton V.; Rudders, David; and et al, Spillover of sea scallops from rotational closures in the Mid-Atlantic Bight (United States) (2020). ICES Journal of Marine Science, 77(5), 1992-2002.
doi: 10.1093/icesjms/fsaa099
