Evaluation of self-feeders as a tool to study diet preferences in groups of Atlantic cod (Gadus morhua)
Among other applications, self-feeding has been used to study food preferences in fish allowing them to choose between feeders with different food content. Preference tests assume that (i) trigger actuations are motivated by appetite, (ii) fish can learn which feeder contains which food and discrimi...
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ftarchimer:oai:archimer.ifremer.fr:22754 2023-05-15T15:27:07+02:00 Evaluation of self-feeders as a tool to study diet preferences in groups of Atlantic cod (Gadus morhua) Millot, Sandie Nilsson, Jonatan Fosseidengen, Jan Erik Begout, Marie-laure Kristiansen, Tore 2012-07 application/pdf https://archimer.ifremer.fr/doc/00116/22754/20605.pdf https://doi.org/10.1051/alr/2012020 https://archimer.ifremer.fr/doc/00116/22754/ eng eng Edp Sciences S A https://archimer.ifremer.fr/doc/00116/22754/20605.pdf doi:10.1051/alr/2012020 https://archimer.ifremer.fr/doc/00116/22754/ EDP Sciences, IFREMER, IRD 2012 info:eu-repo/semantics/openAccess restricted use Aquatic Living Resources (0990-7440) (Edp Sciences S A), 2012-07 , Vol. 25 , N. 3 , P. 251-258 Learning Self-feeding Social status Behaviour Coping abilities Gadidae text Publication info:eu-repo/semantics/article 2012 ftarchimer https://doi.org/10.1051/alr/2012020 2021-09-23T20:22:11Z Among other applications, self-feeding has been used to study food preferences in fish allowing them to choose between feeders with different food content. Preference tests assume that (i) trigger actuations are motivated by appetite, (ii) fish can learn which feeder contains which food and discriminate between feeders solely on the basis of their content, and (iii) in groups of fish, the triggering preferences is representative for the individuals of the group. We studied individual triggering behaviour in four groups of 14 Atlantic cod (length of 34 +/- 2 cm, weight of 424 +/- 102 g, mean +/- SE, water temperature comprised between 7-8 degrees C) that were first given the choice between two self-feeders with identical content (Period 1 of 14 days) and subsequently with one feeder full and the other empty (Period 2 of 14 days). In all four groups, one or two individuals performed the majority of the actuations, and in three groups the high triggering fish was a female high-ranked for size and growth rate. Cod displayed a preference for one of the two feeders despite their identical content. When the preferred feeder was emptied, the preference switched after one to eight days but both feeders were still actuated throughout the experiment. In conclusion, the assumption that actuation frequency reflects food preference and is representative for the individuals of the group may not be true, at least for Atlantic cod. If aiming at determining preferences representative for the whole population multiple representative fish should be kept isolated in separate tanks, with self-feeders containing each food option, on each tank. Article in Journal/Newspaper atlantic cod Gadus morhua Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Aquatic Living Resources 25 3 251 258 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Learning Self-feeding Social status Behaviour Coping abilities Gadidae |
spellingShingle |
Learning Self-feeding Social status Behaviour Coping abilities Gadidae Millot, Sandie Nilsson, Jonatan Fosseidengen, Jan Erik Begout, Marie-laure Kristiansen, Tore Evaluation of self-feeders as a tool to study diet preferences in groups of Atlantic cod (Gadus morhua) |
topic_facet |
Learning Self-feeding Social status Behaviour Coping abilities Gadidae |
description |
Among other applications, self-feeding has been used to study food preferences in fish allowing them to choose between feeders with different food content. Preference tests assume that (i) trigger actuations are motivated by appetite, (ii) fish can learn which feeder contains which food and discriminate between feeders solely on the basis of their content, and (iii) in groups of fish, the triggering preferences is representative for the individuals of the group. We studied individual triggering behaviour in four groups of 14 Atlantic cod (length of 34 +/- 2 cm, weight of 424 +/- 102 g, mean +/- SE, water temperature comprised between 7-8 degrees C) that were first given the choice between two self-feeders with identical content (Period 1 of 14 days) and subsequently with one feeder full and the other empty (Period 2 of 14 days). In all four groups, one or two individuals performed the majority of the actuations, and in three groups the high triggering fish was a female high-ranked for size and growth rate. Cod displayed a preference for one of the two feeders despite their identical content. When the preferred feeder was emptied, the preference switched after one to eight days but both feeders were still actuated throughout the experiment. In conclusion, the assumption that actuation frequency reflects food preference and is representative for the individuals of the group may not be true, at least for Atlantic cod. If aiming at determining preferences representative for the whole population multiple representative fish should be kept isolated in separate tanks, with self-feeders containing each food option, on each tank. |
format |
Article in Journal/Newspaper |
author |
Millot, Sandie Nilsson, Jonatan Fosseidengen, Jan Erik Begout, Marie-laure Kristiansen, Tore |
author_facet |
Millot, Sandie Nilsson, Jonatan Fosseidengen, Jan Erik Begout, Marie-laure Kristiansen, Tore |
author_sort |
Millot, Sandie |
title |
Evaluation of self-feeders as a tool to study diet preferences in groups of Atlantic cod (Gadus morhua) |
title_short |
Evaluation of self-feeders as a tool to study diet preferences in groups of Atlantic cod (Gadus morhua) |
title_full |
Evaluation of self-feeders as a tool to study diet preferences in groups of Atlantic cod (Gadus morhua) |
title_fullStr |
Evaluation of self-feeders as a tool to study diet preferences in groups of Atlantic cod (Gadus morhua) |
title_full_unstemmed |
Evaluation of self-feeders as a tool to study diet preferences in groups of Atlantic cod (Gadus morhua) |
title_sort |
evaluation of self-feeders as a tool to study diet preferences in groups of atlantic cod (gadus morhua) |
publisher |
Edp Sciences S A |
publishDate |
2012 |
url |
https://archimer.ifremer.fr/doc/00116/22754/20605.pdf https://doi.org/10.1051/alr/2012020 https://archimer.ifremer.fr/doc/00116/22754/ |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Aquatic Living Resources (0990-7440) (Edp Sciences S A), 2012-07 , Vol. 25 , N. 3 , P. 251-258 |
op_relation |
https://archimer.ifremer.fr/doc/00116/22754/20605.pdf doi:10.1051/alr/2012020 https://archimer.ifremer.fr/doc/00116/22754/ |
op_rights |
EDP Sciences, IFREMER, IRD 2012 info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1051/alr/2012020 |
container_title |
Aquatic Living Resources |
container_volume |
25 |
container_issue |
3 |
container_start_page |
251 |
op_container_end_page |
258 |
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1766357575623770112 |