Development of observational learning during school formation in jack mackerel Trachurus japonicus juveniles

Kohji Takahashi, Reiji Masuda, Yoh Yamashita

研究成果: Article査読

9 被引用数 (Scopus)

抄録

We assessed whether the development of observational learning in jack mackerel Trachurus japonicus juveniles corresponds with that of their schooling behaviour. Schooling behaviour was quantitatively analyzed by nearest neighbour distance and separation angle in two size classes of fish, 20-mm and 40-mm in body length. Observer and non-observer fish with matching sizes were conditioned to pellets by temporarily stopping aeration. Observer fish were provided with five observation trials of other individuals feeding near an air stone when aeration was stopped. After the observation trial, fish were conditioned to pellets with the stop of aeration, and then the learning process was evaluated by the increase in the association with the feeding area when aeration was stopped. In 20-mm fish, which were at an immature stage of schooling behaviour, there was no difference in the learning process between observer and non-observer fish. In contrast, 40-mm fish were confirmed to have a well-developed schooling behaviour, and the observer learnt the feeding area more efficiently than the non-observer. This study provides evidence that observational learning develops along with the development of the social interaction.

本文言語English
ページ(範囲)52-57
ページ数6
ジャーナルBehavioural Processes
103
DOI
出版ステータスPublished - 2014 3月
外部発表はい

ASJC Scopus subject areas

  • 動物科学および動物学
  • 行動神経科学

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