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Settlement Of Blue Crab Postlarvae In Western North Atlantic Estuaries, J Van Montfrans, Ce Epifano, Dm Knott, R M. Lipcius, Et Al
Settlement Of Blue Crab Postlarvae In Western North Atlantic Estuaries, J Van Montfrans, Ce Epifano, Dm Knott, R M. Lipcius, Et Al
VIMS Articles
We quantified variability in daily settlement of blue crab postlarvae (megalopae) on identical artificial settlement substrates at up to 6 sites concurrently over a broad geographic expanse (similar to 1300 km) of the western North Atlantic (Delaware-South Carolina, USA). The 4-year study encompassed the blue crab recruitment season (generally July-November) from 1989-1992. Regional settlement was characterized by: (1) constant low levels of daily settlement punctuated by significantly non-random, episodic peaks of variable duration and intensity with peaks collectively accounting for at least half the total annual settlement at a site; (2) spatial and temporal variability leading to a general lack …
Settlement Indices For Blue Crab Megalopae In The York River, Virginia: Temporal Relationships And Statistical Efficiency, Ks Metcalfe, J Van Montfrans, Rom Lipcius
Settlement Indices For Blue Crab Megalopae In The York River, Virginia: Temporal Relationships And Statistical Efficiency, Ks Metcalfe, J Van Montfrans, Rom Lipcius
VIMS Articles
The efficacy of artificial settlement substrates in quantifying relative rates of settlement of blue crab, Callinectes sapidus, postlarvae (megalopae) was examined. The technique has been widely used to assess settlement at local (Chesapeake Bay) and broad geographic scales (Atlantic and Gulf Coasts). This analysis examined differences in settlement between two configurations of substrates and two depths of deployment, in relation to lunar day, month, year and hours of flood tide occurring at night. Substrates were deployed daily for four years (1989-1992) during the settlement season (July-November) in the York River, Virginia. Settlement did not differ between substrate configurations (flat and …