Response of rainbow trout (Oncorhynchus mykiss) to mirror images

The response of cultured rainbow trout to their mirrored image was investigated. Thirty fish were placed individually in two novel aquariums consecutively for 10 min each. Walls in one aquarium were covered with mirrors on all four sides, whereas the walls of the other aquarium were non-transparent...

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Bibliographic Details
Authors: Rauw , Wendy Mercedes, García Cortes, Luis Alberto, Villarroel, M., Gómez Raya, Luis
Format: article
Publication Date:2017
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/291427
Online Access:http://hdl.handle.net/10261/291427
Access Level:Open access
Keyword:Activity
Behaviour
Fish
Novel environment
Speed
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network_acronym_str ES
network_name_str España
repository_id_str
spelling Response of rainbow trout (Oncorhynchus mykiss) to mirror imagesRauw , Wendy MercedesGarcía Cortes, Luis AlbertoVillarroel, M.Gómez Raya, LuisActivityBehaviourFishNovel environmentSpeedThe response of cultured rainbow trout to their mirrored image was investigated. Thirty fish were placed individually in two novel aquariums consecutively for 10 min each. Walls in one aquarium were covered with mirrors on all four sides, whereas the walls of the other aquarium were non-transparent black. Because all four walls were covered with mirrors, the mirrored image of the fish was reproduced multiple times such that ‘a group’ of fish was created surrounding the individual. Half of the fish started in the aquarium with the mirrors, whereas the other half started in the mirrorless aquarium. Fish swim faster in the aquarium with mirrors than in the mirrorless aquarium (2.95 vs. 2.40 cm/s; p < 0.01), indicating a positive behavioural response towards their mirrored images. Fish did not show aggressive interactions towards their mirrored images. Being confronted with ‘a group’ of fish and not just one ‘opponent’ may have inhibited aggressive behavior, or individuals may not have considered the images to be fellow individuals. Fish that swam faster in the mirrorless aquarium also did so in the aquarium with mirrors (r = 0.73; p < 0.0001), indicating a persistent behavioural coping response (boldness) in response to the two novel environments. Mirrors may be used to influence social behaviour of fish in aquaculture; further research is needed to investigate the influence of mirror placement in tanks of group housed trout on growth and behaviour.Peer reviewedCSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/291427reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésDepartamento de Mejora Genética AnimalSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2914272026-05-22T06:33:51Z
dc.title.none.fl_str_mv Response of rainbow trout (Oncorhynchus mykiss) to mirror images
title Response of rainbow trout (Oncorhynchus mykiss) to mirror images
spellingShingle Response of rainbow trout (Oncorhynchus mykiss) to mirror images
Rauw , Wendy Mercedes
Activity
Behaviour
Fish
Novel environment
Speed
title_short Response of rainbow trout (Oncorhynchus mykiss) to mirror images
title_full Response of rainbow trout (Oncorhynchus mykiss) to mirror images
title_fullStr Response of rainbow trout (Oncorhynchus mykiss) to mirror images
title_full_unstemmed Response of rainbow trout (Oncorhynchus mykiss) to mirror images
title_sort Response of rainbow trout (Oncorhynchus mykiss) to mirror images
dc.creator.none.fl_str_mv Rauw , Wendy Mercedes
García Cortes, Luis Alberto
Villarroel, M.
Gómez Raya, Luis
author Rauw , Wendy Mercedes
author_facet Rauw , Wendy Mercedes
García Cortes, Luis Alberto
Villarroel, M.
Gómez Raya, Luis
author_role author
author2 García Cortes, Luis Alberto
Villarroel, M.
Gómez Raya, Luis
author2_role author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Activity
Behaviour
Fish
Novel environment
Speed
topic Activity
Behaviour
Fish
Novel environment
Speed
description The response of cultured rainbow trout to their mirrored image was investigated. Thirty fish were placed individually in two novel aquariums consecutively for 10 min each. Walls in one aquarium were covered with mirrors on all four sides, whereas the walls of the other aquarium were non-transparent black. Because all four walls were covered with mirrors, the mirrored image of the fish was reproduced multiple times such that ‘a group’ of fish was created surrounding the individual. Half of the fish started in the aquarium with the mirrors, whereas the other half started in the mirrorless aquarium. Fish swim faster in the aquarium with mirrors than in the mirrorless aquarium (2.95 vs. 2.40 cm/s; p < 0.01), indicating a positive behavioural response towards their mirrored images. Fish did not show aggressive interactions towards their mirrored images. Being confronted with ‘a group’ of fish and not just one ‘opponent’ may have inhibited aggressive behavior, or individuals may not have considered the images to be fellow individuals. Fish that swam faster in the mirrorless aquarium also did so in the aquarium with mirrors (r = 0.73; p < 0.0001), indicating a persistent behavioural coping response (boldness) in response to the two novel environments. Mirrors may be used to influence social behaviour of fish in aquaculture; further research is needed to investigate the influence of mirror placement in tanks of group housed trout on growth and behaviour.
publishDate 2017
dc.date.none.fl_str_mv 2017
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/291427
url http://hdl.handle.net/10261/291427
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Departamento de Mejora Genética Animal
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)
publisher.none.fl_str_mv CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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