Establishment of dominance relationships in gilthead sea bream Sparus aurata juveniles during feeding: Effects on feeding behaviour, feed utilization and fish health

D. Montero, G. Lalumera, M. S. Izquierdo, M. J. Caballero, M. Saroglia, L. Tort

Research output: Contribution to journalArticleResearchpeer-review

27 Citations (Scopus)

Abstract

In gilthead sea bream Sparus aurata held in groups of two, five or 10 fish, social hierarchies were observed. Subordinate S. aurata were characterized by elevation of basal levels of plasma cortisol, together with a reduced immunological potential. Subordinate fish also showed lower feed intake, feed utilization and lower growth. Fatty acid composition was also affected by social status, with a lower content of saturated acids, oleic and eicosapentaenoic, in muscle and liver of fish considered as subordinate. Results show that social hierarchy acts as a stressor in S. aurata. © 2009 The Fisheries Society of the British Isles.
Original languageEnglish
Pages (from-to)790-805
JournalJournal of Fish Biology
Volume74
DOIs
Publication statusPublished - 1 Mar 2009

Keywords

  • Chronic stress
  • Feed intake
  • Social hierarchy

Fingerprint Dive into the research topics of 'Establishment of dominance relationships in gilthead sea bream Sparus aurata juveniles during feeding: Effects on feeding behaviour, feed utilization and fish health'. Together they form a unique fingerprint.

Cite this