... growth and its construction is an energy-demanding process. Ecdysis, the shedding event of the old cuticle, is preceded by a preparatory phase, termed premolt, in which the present cuticle is partially degraded and a new one is formed underneath it. Procambarus clarkii (Girard 1852), an astacid...

... 10 2007 © The Company of Biologists Limited 2007 2007 crayfish dominance agonistic behaviour mirror image Procambarus clarkii Aggression exhibited by crayfish as well as other crustacean species has been well documented ( Heckenlively,1970 ; Edwards and Kravitz,1997...

...Yongping Gao; Michele G. Wheatly SUMMARY This study describes the cloning, sequencing and functional characterization of an epithelial Ca 2+ channel (ECaC)-like gene isolated from antennal gland (kidney) of the freshwater crayfish Procambarus clarkii. The full-length cDNA consisted of 2687 bp...

...John C. Tuthill; Sönke Johnsen SUMMARY We tested the hypothesis that polarization sensitivity enhances the detection of moving, transparent objects by examining the escape response of the red swamp crayfish ( Procambarus clarkii Girard) from a visual threat. A transparent, birefringent target...

... submissively by tailflipping and retreating. To evaluate whether the differences in social behavior are accompanied by differences in responses to non-social stimuli, we exposed socially naïve and experienced crayfish ( Procambarus clarkii ) to an unexpected touch in different social conditions. Socially...

...DeForest Mellon, Jr SUMMARY Intracellular electrodes were used to record from local interneurons in the olfactory lobes of the midbrain in the crayfish Procambarus clarkii. Cells that resembled previously studied central targets of olfactory receptor neurons on the lateral antennular flagellum were...

... of Biologists Limited 2005 2005 calcium imaging contraction GABA Procambarus clarkii The crayfish claw opener (abductor) muscle is innervated by a glutamate-releasing, excitatory axon and a GABA (γ-aminobutyric acid)-releasing, inhibitory axon ( Van Harreveld, 1939 ) ( Fig. 1 ). There is also...

... expression is upregulated during periods of elevated Ca 2+ influx associated with postmolt cuticular mineralization. This paper describes the cloning, sequencing and functional characterization of a novel PMCA3 gene from the antennal gland(kidney) of the crayfish Procambarus clarkii. The complete sequence...

.... Freshwater Biol. 33 , 233 -244. Correia, A. M. ( 2001 ). Seasonal and interspecific evaluation of predation by mammals and birds on the introduced red swamp crayfish Procambarus clarkii (Crustacea, Cambaridae) in a freshwater marsh (Portugal). J. Zool. 255 , 533 -541. Crumrine, P. W...

... photosensitive to blue light spectra and ubiquitous in animals and plants, in the putative pacemakers of Procambarus clarkii, namely the eyestalk and brain, at different times of the 24 h light:dark cycles. Using different experimental light protocols and by means of qualitative/quantitative immunofluorescence...

...Toshiki Nagayama SUMMARY The modulatory effect of serotonin on local circuit neurones forming the uropod motor control system of the crayfish Procambarus clarkii Girard was analysed electrophysiologically. Bath application of 10 μmol l -1 serotonin caused a decrease in the tonic spike activity...

...Dongdong Chen; Zhiping Zhang; Michele G. Wheatly; Yongping Gao SUMMARY This paper describes the cloning and functional characterization of the heart muscle isoform of Sarco/endoplasmic reticulum Ca 2+ -ATPase(SERCA) from crayfish Procambarus clarkii . The complete crayfish heart SERCA, identified...

... and is stabilized by four disulphide bridges. It is lethal to crustaceans ( Cambarellus montezumae ), less toxic to insects (crickets) and non-toxic to mammals (mice) at the doses assayed. In neurons isolated from the X organ–sinus gland system of the crayfish Procambarus clarkii , it blocks the Na + currents...

... Procambarus clarkii at two developmental stages, post-embryonic stage two (PO2) and the juvenile stage, at three different times of day, under a photoperiod cycle of 12 h:12 h L:D, using qualitative and quantitative immunohistochemical methods. In the retina, CHH immunoreactivity is located in the tapetal...

... Rogers , J. V. and Wheatly , M. G. ( 1997 ). Accumulation of calcium in the antennal gland during the moulting cycle of the freshwater crayfish Procambarus clarkii . Invert. Biol. 116 , 248 – 254 . 10.2307/3226901 Schoenmakers , T. , Visser , G. J. , Flik , G...

...Newton H. Copp; Marc Jamon ABSTRACT The kinematic patterns of defense turning behavior in freely behaving specimens of the crayfish Procambarus clarkii were investigated with the aid of a video-analysis system. Movements of the body and all pereiopods, except the chelipeds, were analyzed. Because...

...Zhiping Zhang; Dongdong Chen; Michele G. Wheatly ABSTRACT The discontinuous pattern of muscle growth during the moulting cycle of a freshwater crustacean (the crayfish Procambarus clarkii ) was used as a model system to examine the regulation of the expression of S arco/ E ndoplasmic R eticulum C...

... chemicals), chemicals released from damaged conspecifics (alarm chemicals) and chemicals released from stressed but undamaged conspecifics (stress chemicals). Our study examines the existence and putative source of the stress signals in crayfish. We hypothesize that Procambarus clarkii can recognize...

...Ramón Alvarado-Álvarez; Hugo Aréchiga; Ubaldo García ABSTRACT The effects of 5-hydroxytryptamine (5-HT) were investigated in red pigment concentrating hormone (RPCH)-containing neurons isolated from the X-organ of the crayfish ( Procambarus clarkii ). Under current-clamp conditions and using...

... 2 weeks as the number of agonistic encounters declined to a low level. All crayfish used in this study were juvenile Procambarus clarkii (Girard) collected 1 week after hatching, as each dropped from its mother’s swimmerets and became free-swimming. They were then raised in individual...