[PDF] Top 20 Androgens and social behaviour in a cichlid fish, Oreochromis mossambicus

... occur in rivers localized between the Balsas and Grijalva-Usumacinta river ...UPGMA and maximum likelihood trees (based on genotype frequencies) revealed four main ...loci and high genetic ... See full document

... Cichlid fish are one of the most successful taxa in vertebrate ...phenotypic and behavioral variation amenable to comparative analysis that makes them a popular model for evolutionary studies ... See full document

... male social behavior, both in terms of organization nen-3-one (17,20b-P) and 17a,20a-dihydroxy-4-preg- (Billy and Liley, 1985; Groothuis and Ros, 1993) and nen-3-one (17,20a-P), ... See full document

... trations in the plasma, and the validity of the following discussion is contingent on the validity of this assump- ...excretion and it may even be possible that some metabolic pathways lead to the ... See full document

... resulting in increased levels of monoamines (such as serotonin) and cortisol ...including androgens ( Sapolsky 1993 ...studied in fish ( Pankhurst & Van Der Kraak 1997; Morgan et ... See full document

... of fish that show that lateral display and tail- beating are followed by higher intensity displays like frontal display, mouth-fighting display and finally overt aggression ...display and ... See full document

... species, fish exhibit an enormous potential to produce new cells in the adult ...brain. In contrast to mammals, where proliferation zones are restricted to two brain areas, the sub ventricular zone ... See full document

... implicated in the regulation of sexually differentiated behavior, such as reproductive and aggressive ...displays. In the Mozambique tilapia (Oreochromis mossambicus) territorial males ... See full document

... mechanisms in the regulation of social behaviour, there is considerable diversity in the way these mechansims act on behavioural ...teleost fish offer an excellent opportunity for ... See full document

... teleost fish exhibit a wide range of behavioral responses to environmental and social stimuli, which are quite often associated with their ...changes in reproductive competence, adoption of ... See full document

... (AVT) and isotocin (IT), which are the teleost homologues of arginine– vasopressin and oxytocin in mammals, have well established peripheral effects on osmoregulation and stress response, ... See full document

... longer and with a higher pulse rate during quivering ...reported. In other cichlids, sound production seems mostly restricted to male quivering during the early stages of courtship 共 Ripley and ... See full document

... behavior and in specific of social behavior has attracted researchers for a long ...survival and reproduction. However, to get a complete understanding of social behavior, the ... See full document

... Many cichlid species dig spawning pits or nests in soft bottoms and exhibit many substrate oriented ...cichlids in laboratory and aquaculture set-ups are often kept in the ... See full document

... species androgens respond to social interac- ...changing social environment. Therefore, it would be adaptive to anticipate social challenges and reacting to their clues with an ... See full document

... that androgens respond to the social interactions as a way to adjust the behavior of individuals to the challenges of the social environment in an adaptive ...changes in circulating ... See full document

... (Ursin and Eriksen, 2004)), is one of the most discussed psychological modulators of the stress response (Sapolsky, 2004; Lovallo, 2005), and therefore it is used here to test for the occurrence of ... See full document

... Mostly, in social systems with cooperative behaviour dominants have higher cortisol levels than subdominants ...cooperative behaviour of helpers serves as an appeasing signal towards the ... See full document

... females in the tanks, which could release sex pheromones into the ...Ovulation in teleosts involves a peak of progestin levels and the mere by-products of steroid metabolism in the urine could ... See full document

... reproduction and feeding behaviour (Volkoff 2016). Interestingly in goldfish, intracerebroventricular administration of NPY affects loco- motion, and induces a decrease of swimming activity ... See full document