Ontogenetic changes in the spatial learning capability of jack mackerel Trachurus japonicus

K. Takahashi, R. Masuda, Y. Yamashita

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Ontogenetic changes in learning capability were studied in jack mackerel Trachurus japonicus juveniles ranging from 20 to 95 mm standard length (LS) collected from either pelagic or coastal habitats. Simple spatial and reversal learning tasks were used to estimate learning capability. There was no size dependence in the scores of simple reward conditioning using a Y-maze, whereas the scores of reversal learning tasks showed a clear sigmoidal curve of increase with an inflexion point at 51.7 mm LS. The increase in this learning capability coincided with the size at which juveniles recruit from offshore pelagic to coastal rocky habitats.

Original languageEnglish
Pages (from-to)2315-2325
Number of pages11
JournalJournal of Fish Biology
Volume77
Issue number10
DOIs
Publication statusPublished - 2010 Dec

Keywords

  • Behavioural ontogeny
  • Cognitive ecology
  • Habitat shift
  • Life-history strategy

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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