Cannibalism, refugia and the molting blue crab
نویسندگان
چکیده
منابع مشابه
Effects of molting on the visual acuity of the blue crab, Callinectes sapidus.
In crustaceans with compound eyes, the corneal lens of each facet is part of the exoskeleton and thus shed during molting. Here we used an optomotor assay to evaluate the impact of molting on visual acuity (as measured by the minimum resolvable angle, α(min)) in the female blue crab, Callinectes sapidus. We found that visual acuity decreases substantially in the days prior to molting and is gra...
متن کاملTemporal Variation in Juvenile Blue Crab Mortality: Nearshore Shallows and Cannibalism in Chesapeake Bay
Adult abundance is determined by both recruitment and survival of juveniles. Blue crabs exhibit a distinct population size-structure reflecting seasonal cycles of recruitment and growth in the Rhode River, a subestuary lacking submerged vegetation in central Chesapeake Bay. Seasonally shifting modes in the size-structure, corresponding to juvenile, prepubertal and mature crabs, allowed trawl ca...
متن کاملBlue Crab Summary_Blue Crab Status02001-8.5x11
The blue crab, Callinectes sapidus, is a keystone species which plays an integral ecological, economic, and sociological role in Chesapeake Bay. The blue crab functions as both predator and prey in the Bay’s complex estuarine foodweb and occupies a variety of critical habitats impacted by human activity. Blue crabs exhibit a complex life history, disperse between estuarine and marine habitats, ...
متن کاملBlue Crab Summary_Blue Crab Status02001-8.5x11
The blue crab, Callinectes sapidus, is a keystone species which plays an integral ecological, economic, and sociological role in Chesapeake Bay. The blue crab functions as both predator and prey in the Bay’s complex estuarine foodweb and occupies a variety of critical habitats impacted by human activity. Blue crabs exhibit a complex life history, disperse between estuarine and marine habitats, ...
متن کاملBlue Crab Aquaculture in Ponds
North Carolina’s Blue Crab Fishery As North Carolina’s number one fishery, blue crabs, Callinectes sapidus, are part of an important industry for numerous coastal communities. The fishery supports commercial fishermen, dealers, gear providers and processors throughout the year. Fluctuations in landings have led to concerns over crab populations and the livelihood of the commercial crabbers they...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 1997
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps147077