Does sex influence intraspecific aggression and dominance in Nile tilapia juveniles?

Autor(es)

Pinho-Neto, Candido Ferreira ^[1] ; Miyai, Caio Akira ^[1] ; Carretero Sanches, Fabio Henrique ^[1] ; Giaquinto, Percilia Cardoso ^[1] ; Delicio, Helton Carlos ^[1] ; Gil Barcellos, Leonardo Jose ^[2] ; Volpato, Gilson Luiz ^[1] ; Barreto, Rodrigo Egydio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, CAUNESP, Inst Biociencias, Dept Fisiol, BR-18618970 Sao Paulo - Brazil

^[2] Univ Passo Fundo, Programa Posgrad Bioexpt, Passo Fundo, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Behavioural Processes; v. 105, p. 15-18, JUN 2014.
• Citações Web of Science: 6

Resumo

Although sex of mature fish is known to influence aggression, this issue has so far been neglected in juveniles. Here, we tested this sex effect and showed that it does not significantly affect intraspecific aggression in juveniles of the cichlid Nile tilapia. To reach this conclusion, we measured the latency period before onset of confrontation, the frequency and types of aggressive interactions, the duration of a dispute, and the probability of becoming dominant. This was done on pairs of Nile tilapia that varied by sex: females x females, males x males, and females x males. In a double blind approach, after pairing, the sex of each individual was histologically verified and contrasted with behavioral data. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 10/11319-0 - Sinalização química no sistema presa-predador na tilápia-do-Nilo: da ecologia comportamental à aquicultura
• Beneficiário: Rodrigo Egydio Barreto
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/01973-7 - Influência do gênero nas disputas agressivas em juvenis de tilápia-do-Nilo
• Beneficiário: Cândido Ferreira Pinho Neto
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica