Do You Eat or Not? Predation Behaviour of European Catfish (Silurus glanis) Toward Live Bait on a Hook
Stéphanie Boulêtreau1, 2, Pascal Verdeyroux3, Elise Lorthiois1, 2, Frédéric Azémar1, 2, Arthur Compin1, 2, Frédéric Santoul1, 2, *
Identifiers and Pagination:Year: 2016
First Page: 8
Last Page: 14
Publisher Id: TOFISHSJ-9-8
Article History:Received Date: 31/8/2015
Revision Received Date: 13/11/2015
Acceptance Date: 17/11/2015
Electronic publication date: 25/3/2016
Collection year: 2016
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
We filmed and analysed, in natural and field conditions, behaviours of large-bodied European catfish (Silurus glanis) individuals (body size ranging from 80 to 220 cm) exposed to a hook baited with 20 cm-long Carassius spp. Among a total of 95 individuals observed, 80 % of the catfish clearly demonstrated interest in the bait but attacks were performed only 25 % of the time and only 12.5 % of fish were hooked. More than half of the individuals (55 %) were observed swimming toward the bait and then turning around or tasting it without performing any attacks. These observations showed that individual fish motivation and behaviour are important factors in determining whether European catfish are attracted to bait and eventually hooked.