... other, with stronger allometric relationships on land. Using the aquatic blue crab, Callinectes sapidus , and the terrestrial blackback land crab, Gecarcinus lateralis , I measured and compared body mass, merus morphology (dimensions, cuticle thickness and the second moment of area I ) and mechanics...

... behavior chemoreceptor neurons Callinectes sapidus feeding deterrents Animals often use chemical deterrents in defense against predators (e.g. Paul et al., 2007 ; Ferrer and Zimmer, 2009 ), which the predators detect and respond to through a diversity of chemoreceptor cells. In terrestrial...

...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...

... 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...

...Jamie Baldwin; Sönke Johnsen SUMMARY Visual displays often play a large role in animal communication,particularly in sexual interactions. The blue crab Callinectes sapidus is both colorful and highly visually responsive, yet almost all studies of their courtship have focused on chemical cues...

...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...

... and torsional forces to resisting tension. This study was designed to explore the changes in the mechanical properties of the crustacean cuticle as the animals switch between two distinct skeletal support mechanisms. Samples of cuticle were removed from blue crabs, Callinectes sapidus , at 1 h (soft-shell stage...

... and R.P.H., unpublished data). Fig. 8. Relative arginine kinase (AK) mRNA expression in anterior (G3, white bars)and posterior (G7, black bars) gills of Callinectes sapidus acclimated to 35 p.p.t. ( t =0) and at various times after being transferred to 15 p.p.t. Values are means ± s.e.m., N =4–5...

...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...

... tail flipping behaviour in the freshwater crayfish, Cherax destructor. Mar. Fresh. Res. 50 , 183 -187. Booth, C. E. and McMahon, B. R. ( 1985 ). Lactate dynamics during locomotor activity in the blue crab, Callinectes sapidus. J. Exp. Biol. 118 , 461 -465. Boyle, K. L., Dillaman, R. M...

...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...

... crab Callinectes sapidus were amplified by reverse transcriptase/polymerase chain reaction (RT-PCR) and sequenced. The resulting 3828-nucleotide cDNA encodes a putative 1039-amino-acid protein with a predicted molecular mass of 115.6 kDa. Hydrophobicity analysis of the amino acid sequence indicated...

... 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...

... high and variable demands on their reserves of high-energy phosphates. The major invertebrate phosphagen kinase, arginine kinase, is expressed in the gills of two species of euryhaline crabs, the blue crab Callinectes sapidus and the shore crab Carcinus maenas , in which energy-requiring functions...

...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...