Settlement of blue crab postlarvae in western North Atlantic estuaries
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 encompasse...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-2537 2023-06-11T04:14:36+02:00 Settlement of blue crab postlarvae in western North Atlantic estuaries van Montfrans, J Epifano, CE Knott, DM Lipcius, R M 1995-01-01T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/1536 https://scholarworks.wm.edu/context/vimsarticles/article/2537/viewcontent/Settlement_of_blue_crab___van_Monfrans_et_al.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/1536 https://scholarworks.wm.edu/context/vimsarticles/article/2537/viewcontent/Settlement_of_blue_crab___van_Monfrans_et_al.pdf VIMS Articles Callinectes-sapidus Chesapeake Bay Fisheries Science Peer-Reviewed Articles Aquaculture and Fisheries text 1995 ftwilliammarycol 2023-05-04T17:49:02Z 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 of coherence between sites in a given year and across years within a site; (3) occasional coherence in patterns between sites during a given year, suggesting linkages in regional processes affecting settlement; and, (4) significant semilunar patterns of episodic settlement pulses at the York River and Charleston-Harbor sites over a 4-year period. Thus, regional settlement patterns exhibit both consistent (i.e., semilunar periodicity, episodic pulses) and variable (i.e., temporal and spatial variation) elements, which are likely due to a combination of stochastic and deterministic processes. Such patterns may impart an ecological advantage to crabs settling en masse (i.e., reduced encounter rate with predators through predator swamping) or at continuous low levels (i.e., below a density-dependent threshold) during the recruitment season. An identical study illustrated that settlement in Gulf of Mexico estuaries exhibited similarly episodic and highly variable patterns. Daily mean and total annual settlement were up to a hundred-fold greater for gulf than Atlantic Coast estuaries implying population limitation by post-settlement processes in the gulf and greater recruitment limitation in the Atlantic. These studies emphasize the merit of conducting research over a broad geographic range using standardized techniques to ... Text North Atlantic W&M ScholarWorks York River ENVELOPE(-66.500,-66.500,62.417,62.417) |
institution |
Open Polar |
collection |
W&M ScholarWorks |
op_collection_id |
ftwilliammarycol |
language |
unknown |
topic |
Callinectes-sapidus Chesapeake Bay Fisheries Science Peer-Reviewed Articles Aquaculture and Fisheries |
spellingShingle |
Callinectes-sapidus Chesapeake Bay Fisheries Science Peer-Reviewed Articles Aquaculture and Fisheries van Montfrans, J Epifano, CE Knott, DM Lipcius, R M Settlement of blue crab postlarvae in western North Atlantic estuaries |
topic_facet |
Callinectes-sapidus Chesapeake Bay Fisheries Science Peer-Reviewed Articles Aquaculture and Fisheries |
description |
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 of coherence between sites in a given year and across years within a site; (3) occasional coherence in patterns between sites during a given year, suggesting linkages in regional processes affecting settlement; and, (4) significant semilunar patterns of episodic settlement pulses at the York River and Charleston-Harbor sites over a 4-year period. Thus, regional settlement patterns exhibit both consistent (i.e., semilunar periodicity, episodic pulses) and variable (i.e., temporal and spatial variation) elements, which are likely due to a combination of stochastic and deterministic processes. Such patterns may impart an ecological advantage to crabs settling en masse (i.e., reduced encounter rate with predators through predator swamping) or at continuous low levels (i.e., below a density-dependent threshold) during the recruitment season. An identical study illustrated that settlement in Gulf of Mexico estuaries exhibited similarly episodic and highly variable patterns. Daily mean and total annual settlement were up to a hundred-fold greater for gulf than Atlantic Coast estuaries implying population limitation by post-settlement processes in the gulf and greater recruitment limitation in the Atlantic. These studies emphasize the merit of conducting research over a broad geographic range using standardized techniques to ... |
format |
Text |
author |
van Montfrans, J Epifano, CE Knott, DM Lipcius, R M |
author_facet |
van Montfrans, J Epifano, CE Knott, DM Lipcius, R M |
author_sort |
van Montfrans, J |
title |
Settlement of blue crab postlarvae in western North Atlantic estuaries |
title_short |
Settlement of blue crab postlarvae in western North Atlantic estuaries |
title_full |
Settlement of blue crab postlarvae in western North Atlantic estuaries |
title_fullStr |
Settlement of blue crab postlarvae in western North Atlantic estuaries |
title_full_unstemmed |
Settlement of blue crab postlarvae in western North Atlantic estuaries |
title_sort |
settlement of blue crab postlarvae in western north atlantic estuaries |
publisher |
W&M ScholarWorks |
publishDate |
1995 |
url |
https://scholarworks.wm.edu/vimsarticles/1536 https://scholarworks.wm.edu/context/vimsarticles/article/2537/viewcontent/Settlement_of_blue_crab___van_Monfrans_et_al.pdf |
long_lat |
ENVELOPE(-66.500,-66.500,62.417,62.417) |
geographic |
York River |
geographic_facet |
York River |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/1536 https://scholarworks.wm.edu/context/vimsarticles/article/2537/viewcontent/Settlement_of_blue_crab___van_Monfrans_et_al.pdf |
_version_ |
1768392740548116480 |