To boldly go: individual differences in boldness influence migratory tendency.

Abstract:

:Partial migration, whereby only a fraction of the population migrates, is thought to be the most common type of migration in the animal kingdom, and can have important ecological and evolutionary consequences. Despite this, the factors that influence which individuals migrate and which remain resident are poorly understood. Recent work has shown that consistent individual differences in personality traits in animals can be ecologically important, but field studies integrating personality traits with migratory behaviour are extremely rare. In this study, we investigate the influence of individual boldness, an important personality trait, upon the migratory propensity of roach, a freshwater fish, over two consecutive migration seasons. We assay and individually tag 460 roach and show that boldness influences migratory propensity, with bold individuals being more likely to migrate than shy fish. Our data suggest that an extremely widespread personality trait in animals can have significant ecological consequences via influencing individual-level migratory behaviour.

journal_name

Ecol Lett

journal_title

Ecology letters

authors

Chapman BB,Hulthén K,Blomqvist DR,Hansson LA,Nilsson JÅ,Brodersen J,Anders Nilsson P,Skov C,Brönmark C

doi

10.1111/j.1461-0248.2011.01648.x

subject

Has Abstract

pub_date

2011-09-01 00:00:00

pages

871-6

issue

9

eissn

1461-023X

issn

1461-0248

journal_volume

14

pub_type

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