..., contrasting with previous results and predictions regarding the adaptive benefit of these structures. Comparisons with a less venomous catfish species ( Ameiurus natalis ) indicate that a single protein present in the venom of N. gyrinus may be responsible for providing the significant selective advantage...

... of the dorsal process, producing sounds. In Synodontis the analogy for sound production would be a brake shoe pressing against a wheel. * Author for correspondence ( E.Parmentier@ulg.ac.be ) 27 11 2009 © 2010. 2010 Mochokidae acoustics catfish sound production spine Catfishes...

..., the maintenance of sensory functions in a changing environment may be crucial for an animal's survival. Many fish species rely on hearing for acoustic orientation and communication. In order to investigate the influence of temperature on the auditory system, channel catfish Ictalurus punctatus was chosen...

...Sam Van Wassenbergh; Tim Lieben; Anthony Herrel; Frank Huysentruyt; Tom Geerinckx; Dominique Adriaens; Peter Aerts SUMMARY Food scraping has independently evolved twice from suction feeding in the evolution of catfishes: within neotropical Loricarioidea and paleotropical Mochokidae. To gain insight...

...S. H. Rolen; J. Caprio SUMMARY Bile salts are known olfactory stimuli for teleosts, but only a single report has indicated that the taste system of a fish was sensitive to this class of stimuli. Here, gustatory responses of the channel catfish, Ictalurus punctatus , to four bile salts that included...

... consequences of morphological adaptations enhancing biting on the mechanics and performance of suction feeding in fish remain obscure. In this study, suction feeding performance was compared between three clariid catfish species differing considerably in their biting capacity, by measuring the velocity...

... Balamurugan, K. and Haider, S. ( 1998 ). Partial purification of maturation-promoting factor from catfish, Clarias batrachus : identification as the histone H1 kinase and its periodic activation. Comp. Biochem. Physiol. 120C , 329 -342. Bornslaeger, E. A., Mattei, P. and Schultz, R. M. ( 1986...

... for Clarias gariepinus , an air-breathing catfish, are analysed. High-speed X-ray videos were recorded during prey capture of three catfish implanted with small, radio-opaque markers in the cranial elements potentially involved. A kinematic analysis was performed from which data were used as input in planar...

... and degree of pH recovery during hypercapnia. Waters of the Amazon are characteristically dilute in ions, which may have consequences for acid-base regulation during environmental hypercapnia in endemic fishes. The armoured catfish Liposarcus pardalis , from the Amazon, was exposed to a water P CO 2 of 7, 14...

...Kirsten Pohlmann; Jelle Atema; Thomas Breithaupt SUMMARY In a previous study we showed that nocturnal piscivorous catfish track the wake left by a swimming prey fish to locate it, following past locations to detect the present location of the prey. In a wake there are hydrodynamic as well...

...Ron H. Douglas; Shaun P. Collin; Julie Corrigan SUMMARY The dilated, round pupils of a species of suckermouth armoured catfish( Liposarcus pardalis ) constrict slowly on illumination (over 35-40 min) to form crescent-shaped apertures. Ray tracing of He—Ne laser beams shows that the lenses...

... ) and brown bullhead ( Ameiurus nebulosus ) catfish, species that are highly similar in their olfactory receptor and behavioral responses to amino acid odorants. Catfish respond with greater appetitive food-searching (swimming) behavior to amino-acid-conditioned olfactory stimuli than to non-conditioned amino...