Comp Biochem Physiol A Mol Integr Physiol 2019 01 11;227:105-115. Epub 2018 Oct 11.
Departments of Biology and Biochemistry, Memorial University of Newfoundland, St. John's, NL A1B 3X9, Canada. Electronic address:
In order to assess potential interspecific differences in the endocrine mechanisms regulating feeding in Characiformes, we used three fish species with different feeding habits: two Characidae, the omnivore black widow tetra and the carnivore bucktooth tetra, and one Serrasalmidae, the herbivore silver dollar, as models. cDNAs encoding for appetite-regulating peptides (orexin, cocaine and amphetamine regulated transcript CART, cholecystokinin CCK and leptin) were isolated and their tissue distribution examined. The protein sequences of the three species showed most similarities with those of other Characiformes, followed by Cypriniformes and Siluriformes. Read More