Opposite selection on behavioural types by active and passive fishing gears in a simulated guppy (Poecilia reticulata) fishery

Diaz Pauli, B., Wiech, M., Heino, M. ORCID: https://orcid.org/0000-0003-2928-3940, & Utne-Palm, A.C. (2015). Opposite selection on behavioural types by active and passive fishing gears in a simulated guppy (Poecilia reticulata) fishery. Journal of Fish Biology 86 (3) 1030-1045. 10.1111/jfb.12620.

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Abstract

This study assessed whether fishing gear was selective on behavioural traits, such as boldness and actvity, and how this was related with a productivity trait, growth. Female guppies "Poecilia reticulata" were screened for their behavior on the shy-bold axis and activity, and then tested whether they were captured differently by passive and active fishing gear, here representd by a trap and a trawl. Both gears were selective on boldness; bold individuals were caught faster by the trap, but escaped the trawl more often. Boldness and gear vulnerability showed weak correlations with activity and growth. The results draw attention to the importance of the behavioural dimension and fishery productivity.

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