Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus)
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/10236244.2015.1070478 http://hdl.handle.net/11449/171991 |
Resumo: | Social fish raised in farms are usually kept in groups of similar-sized individuals. However, social animals of similar size typically have similar fighting ability, which increases aggressive interaction for social rank establishment, as well as social stress. We compared Thai strain Nile tilapia fish, Oreochromis niloticus (L.), held under two treatments: (1) The Homogeneous one, with five adult male fish of similar size and (2) the Heterogeneous treatment with five adult males of different sizes. We recorded the frequency of aggressive interactions and checked social stability and stress levels (cortisol) after five days in the groups. Grouping similar sized Thai Nile tilapia increased the aggressive interactions and delayed rank stability with increased body injuries as a consequence. Homogeneous-sized individuals showed a similar level of stress while heterogeneous-sized individuals showed different stress levels with dominants being more stressed than subordinates. The data indicate that the practice of selecting fish of similar size in aquaculture management could reduce the welfare of social fish and that the effect is observed in different lineages. |
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Repositório Institucional da UNESP |
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Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus)aggressioncultureNile tilapia Oreochromis niloticussize selectionstresswelfareSocial fish raised in farms are usually kept in groups of similar-sized individuals. However, social animals of similar size typically have similar fighting ability, which increases aggressive interaction for social rank establishment, as well as social stress. We compared Thai strain Nile tilapia fish, Oreochromis niloticus (L.), held under two treatments: (1) The Homogeneous one, with five adult male fish of similar size and (2) the Heterogeneous treatment with five adult males of different sizes. We recorded the frequency of aggressive interactions and checked social stability and stress levels (cortisol) after five days in the groups. Grouping similar sized Thai Nile tilapia increased the aggressive interactions and delayed rank stability with increased body injuries as a consequence. Homogeneous-sized individuals showed a similar level of stress while heterogeneous-sized individuals showed different stress levels with dominants being more stressed than subordinates. The data indicate that the practice of selecting fish of similar size in aquaculture management could reduce the welfare of social fish and that the effect is observed in different lineages.Departamento de Zoologia e Botânica, Universidade Estadual Paulista, UNESPCentro de Aquicultura da UNESPDepartamento de Zoologia e Botânica, Universidade Estadual Paulista, UNESPCentro de Aquicultura da UNESPUniversidade Estadual Paulista (Unesp)Barreto, Tatiana Nunes [UNESP]Boscolo, Camila Nomura Pereira [UNESP]Gonçalves-de-Freitas, Eliane [UNESP]2018-12-11T16:58:04Z2018-12-11T16:58:04Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article309-318application/pdfhttp://dx.doi.org/10.1080/10236244.2015.1070478Marine and Freshwater Behaviour and Physiology, v. 48, n. 5, p. 309-318, 2015.1029-03621023-6244http://hdl.handle.net/11449/17199110.1080/10236244.2015.10704782-s2.0-849392581202-s2.0-84939258120.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMarine and Freshwater Behaviour and Physiology0,384info:eu-repo/semantics/openAccess2024-04-09T15:43:25Zoai:repositorio.unesp.br:11449/171991Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-09T15:43:25Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus) |
title |
Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus) |
spellingShingle |
Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus) Barreto, Tatiana Nunes [UNESP] aggression culture Nile tilapia Oreochromis niloticus size selection stress welfare |
title_short |
Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus) |
title_full |
Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus) |
title_fullStr |
Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus) |
title_full_unstemmed |
Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus) |
title_sort |
Homogeneously sized groups increase aggressive interaction and affect social stress in Thai strain Nile tilapia (Oreochromis niloticus) |
author |
Barreto, Tatiana Nunes [UNESP] |
author_facet |
Barreto, Tatiana Nunes [UNESP] Boscolo, Camila Nomura Pereira [UNESP] Gonçalves-de-Freitas, Eliane [UNESP] |
author_role |
author |
author2 |
Boscolo, Camila Nomura Pereira [UNESP] Gonçalves-de-Freitas, Eliane [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Barreto, Tatiana Nunes [UNESP] Boscolo, Camila Nomura Pereira [UNESP] Gonçalves-de-Freitas, Eliane [UNESP] |
dc.subject.por.fl_str_mv |
aggression culture Nile tilapia Oreochromis niloticus size selection stress welfare |
topic |
aggression culture Nile tilapia Oreochromis niloticus size selection stress welfare |
description |
Social fish raised in farms are usually kept in groups of similar-sized individuals. However, social animals of similar size typically have similar fighting ability, which increases aggressive interaction for social rank establishment, as well as social stress. We compared Thai strain Nile tilapia fish, Oreochromis niloticus (L.), held under two treatments: (1) The Homogeneous one, with five adult male fish of similar size and (2) the Heterogeneous treatment with five adult males of different sizes. We recorded the frequency of aggressive interactions and checked social stability and stress levels (cortisol) after five days in the groups. Grouping similar sized Thai Nile tilapia increased the aggressive interactions and delayed rank stability with increased body injuries as a consequence. Homogeneous-sized individuals showed a similar level of stress while heterogeneous-sized individuals showed different stress levels with dominants being more stressed than subordinates. The data indicate that the practice of selecting fish of similar size in aquaculture management could reduce the welfare of social fish and that the effect is observed in different lineages. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01 2018-12-11T16:58:04Z 2018-12-11T16:58:04Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1080/10236244.2015.1070478 Marine and Freshwater Behaviour and Physiology, v. 48, n. 5, p. 309-318, 2015. 1029-0362 1023-6244 http://hdl.handle.net/11449/171991 10.1080/10236244.2015.1070478 2-s2.0-84939258120 2-s2.0-84939258120.pdf |
url |
http://dx.doi.org/10.1080/10236244.2015.1070478 http://hdl.handle.net/11449/171991 |
identifier_str_mv |
Marine and Freshwater Behaviour and Physiology, v. 48, n. 5, p. 309-318, 2015. 1029-0362 1023-6244 10.1080/10236244.2015.1070478 2-s2.0-84939258120 2-s2.0-84939258120.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Marine and Freshwater Behaviour and Physiology 0,384 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
309-318 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965599036604416 |