Advanced search
Start date

Effect of agonistic profile of males in mate choice in female nile tilapia

Grant number: 12/06565-7
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): April 01, 2013
Effective date (End): December 31, 2013
Field of knowledge:Biological Sciences - Zoology - Animal Behavior
Principal Investigator:Percilia Cardoso Giaquinto
Grantee:Marina Borges de Sá
Host Institution: Instituto de Biociências (IBB). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil


Selection favors females who access reliable information on the genetic quality of males. Females may choose their phenotypic characteristics, including sexual displays, colors, coloring, bridal ornaments, pheromones, body size and quality of territory. On the other hand, completion for resources occurs more often among males, being the aggression the most common type of competition. Although studies show that females prefer dominant males, may not be adaptive to females choose very aggressive males. Thus, it is expected that the female form a more fine assessment when selecting male, in order to avoid the overly aggressive males. The Nile tilapia appears to be an appropriate animal to test this dilemma, because it shows dominance hierarchy, where dominant males defend territories, build nests, court females and have priority access to mating. Although tilapia uses vision as an important means of information transfer between males and females, also uses chemical communication to inform / access status and characteristics related to fitness, such as nutritional status of males. Thus, it will be test if females can select, by means of chemical cues, the aggressive profile males, choosing dominant males, more or less aggressive. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ROSSI, V. S.; DE SA, M. BORGES; SUGIHARA, V. S.; DE MELLO, I. M.; GIAQUINTO, P. C.. Effect of male aggressivity profile on female chemical choice in Nile tilapia. JOURNAL OF ETHOLOGY, v. 37, n. 3, p. 335-342, . (12/06565-7)

Please report errors in scientific publications list by writing to: