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Full-Text Articles in Life Sciences
Spillover Of Sea Scallops From Rotational Closures In The Mid-Atlantic Bight (United States), Deborah R. Hart, Daphne M. Monroe, Joseph C. Caracappa, Dale Haidvogel, Burton V. Shank, David B. Rudders, John M. Klinck, Eileen E. Hofmann, Eric N. Powell
Spillover Of Sea Scallops From Rotational Closures In The Mid-Atlantic Bight (United States), Deborah R. Hart, Daphne M. Monroe, Joseph C. Caracappa, Dale Haidvogel, Burton V. Shank, David B. Rudders, John M. Klinck, Eileen E. Hofmann, Eric N. Powell
CCPO Publications
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 …
Temporal Variations In Spawning Behavior Of Sea Scallops, Placopecten Magellanicus (Gmelin, 1791), In The Mid-Atlantic Resource Area, James E. Kirkley, William D. Dupaul
Temporal Variations In Spawning Behavior Of Sea Scallops, Placopecten Magellanicus (Gmelin, 1791), In The Mid-Atlantic Resource Area, James E. Kirkley, William D. Dupaul
VIMS Articles
Interannual variation in spawning of Placopecten magellanicus (Gmelin) may be important to management agencies concerned with maximizing yield-per-recruit via restrictions on meat counts or temporal restrictions on catch and effort. In this study, temporal patterns in the spawning behavior of sea scallops in the Mid-Atlantic resource area for the period April 1987-April 1991 are analyzed using conventional time-series methods. Biannual spawning was found to be characteristic of sea scallops in the Mid-Atlantic resource area but was also found to be erratic in the timing, duration, and magnitude. The spring spawning event was the more predictable and dominant spawning event. The …
Commercial Practices And Fishery Regulations. The United States Northwest Atlantic Sea Scallop, Placopecten Magellanicus (Gmelin, 1791), Fishery, James E. Kirkley, William D. Dupaul
Commercial Practices And Fishery Regulations. The United States Northwest Atlantic Sea Scallop, Placopecten Magellanicus (Gmelin, 1791), Fishery, James E. Kirkley, William D. Dupaul
VIMS Articles
Fishery regulations are based on discipline specific concepts, empirical analyses, and public comment. Supporting empirical analyses, however, often neglect commercial fishing practices. If supporting analyses do not adequately consider commercial practices, resultant regulations may fail to achieve stated objectives and impose unnecessary costs on industry. This may have been the case for the United States Atlantic sea scallop, Placopecten magellanicus, fishery in which empirical analyses determined a target specification of 30 meats per pound, as a maximum average value, would provide significant long-term benefits in terms of yield per recruit and the overall productivity of the resource. Targeted meat count …