Dominance and growth of Diplodus sargus (Pisces: Sparidae) in small captive groups

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Ana Ribeiro Goncalves (Autor) Outra; Liliana Carvalho de Sousa (Autor) ICBAS; Vitor Carvalho Almada (Autor) Outra

Revista

Título: Applied Animal Behaviour Science

Vol. 137

Páginas: 96-100

ISSN: 0168-1591

Editora: Elsevier

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 0 Citações

Classificação Científica

FOS: Ciências agrárias > Ciência animal e dos lacticínios

Outras Informações

ID Authenticus: P-002-D91

DOI: 10.1016/j.applanim.2012.01.006

Abstract (EN): The dominance hierarchies and the growth rate of the commercially important fish Diplodus sargus were assessed in this study. Specifically, we tested the hypothesis that, if stable dominance orders were established, dominant fish would grow faster and show better condition factors than losers at the end of the experiment. Eight groups of six individuals were followed for 6 weeks and, for each group, we measured the linearity of the hierarchies on a weekly basis, and the week to week stability of the hierarchical structures. These dominance structures were linear and stable from week to week. We found no significant correlation between the dominance index with either growth rate or final condition factor. Thus, in short time windows over few weeks, aggressive competition seems not to cause differences in growth, although effects at a longer term like those induced by stress cannot be ruled out.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5