...Jamie Baldwin; Sönke Johnsen SUMMARY In the blue crab, Callinectes sapidus , claw color varies by sex, sexual maturity and individual. Males rely in part on color cues to select appropriate mates, and these chromatic cues may be perceived through an opponent interaction between two photoreceptors...

... ) in the female blue crab, Callinectes sapidus . We found that visual acuity decreases substantially in the days prior to molting and is gradually recovered after molting. Four days prior to molting, α min was 1.8 deg ( N =5), a value approximating the best possible acuity in this species. In the 24 h before...

... laser-induced fluorescence to investigate how flicking antennules of different morphologies (long antennules of spiny lobsters, Panulirus argus ; short antennules of blue crabs, Callinectes sapidus ) sample fluctuating odor signals at different positions in a turbulent odor plume in a flume to determine...

...Lindy K. Thibodeaux; Karen G. Burnett; Louis E. Burnett SUMMARY Callinectes sapidus (Rathbun), the Atlantic blue crab, commonly harbors low to moderate amounts of bacteria in hemolymph and other tissues. These bacteria are typically dominated by Vibrio spp., which are known to cause mortality...

...Michiya Kamio; Matthew A. Reidenbach; Charles D. Derby SUMMARY The nature of the courtship signalling used by a species is shaped by many factors, one of which is its habitat. Male blue crabs, Callinectes sapidus , have a courtship display in which they elevate their body by standing high...

...Kristin M. Hardy; Bruce R. Locke; Marilia Da Silva; Stephen T. Kinsey SUMMARY The muscles that power swimming in the blue crab, Callinectes sapidus , grow hypertrophically, such that in juvenile crabs the cell diameters are <60 μm, whereas fibers of the adult crabs often exceed 600μm. Thus...

...Stephen T. Kinsey; Pragyansri Pathi; Kristin M. Hardy; Amanda Jordan; Bruce R. Locke SUMMARY Post-metamorphic growth in the blue crab entails an increase in body mass that spans several orders of magnitude. The muscles that power burst swimming in these animals grow hypertrophically...

...L. K. Johnson; R. M. Dillaman; D. M. Gay; J. E. Blum; S. T. Kinsey SUMMARY Diameters of some white locomotor muscle fibers in the adult blue crab, Callinectes sapidus , exceed 500 μm whereas juvenile white fibers are <100 μm. It was hypothesized that aerobically dependent processes...

...Elizabeth P. Tweedie; Francie E. Coblentz; Thomas H. Shafer SUMMARY A heavily glycosylated soluble protein was purified using a combination of lectin affinity and size exclusion chromatography from a soluble extract of uncalcified dorsal cuticle of blue crab Callinectes sapidus removed at ecdysis...

...Marc J. Weissburg; David B. Dusenbery SUMMARY The behavior of crabs tracking odor in turbulent chemical plumes was compared to the performance of computer simulations of search behavior operating in similar chemical signal environments. The movement of blue crabs( Callinectes sapidus ) towards...

...Stewart M. Holt; Stephen T. Kinsey SUMMARY Flux was examined through the reaction catalyzed by arginine kinase in intact blue crab ( Callinectes sapidus ) muscle during simulated changes in salinity. Isolated dark levator muscles from the swimming leg were superfused with a saline solution that had...

... eight membrane-spanning regions, in agreement with previously suggested topologies. The α-subunit amino acid sequence is highly conserved among species, with the blue crab sequence showing 81–83 % identity to those of other arthropods and 74–77 % identity to those of vertebrate species. Quantitative RT...

... mapped using self-referencing, ion-selective microelectrodes. Blue crabs ( Callinectes sapidus ) acclimated to low-salinity conditions (15 % sea water and fresh water) showed a net efflux of ions from the aesthetascs. The region of maximum flux associated with each aesthetasc conformed to that predicted...

...I. J. Mcgaw; C. L. Reiber ABSTRACT The passage of a barium meal (15 % by mass) was followed through the digestive system of the blue crab Callinectes sapidus by flash-freezing crabs at set intervals, followed by radiography of specimens. Food moved from the oesophagus into the stomach region within...

...Richard A. Gleeson; Michele G. Wheatly; Carl L. Reiber ABSTRACT As the blue crab Callinectes sapidus moves from sea water to fresh water, the ‘exposed’ chemosensory dendrites in the olfactory sensilla (aesthetascs) undergo changes in length that are positively correlated with environmental salinity...

... been used to provide insight into the behavioral and physiological aspects of olfactory-mediated orientation, particularly in terrestrial insects. We have used this approach in analyzing predatory searching by blue crabs in response to plumes of attractant metabolites released from the siphons of live...