Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactions
Among fishes, when residents and intruders fight, residents usually win, most likely because they value the residence more than intruders. We hypothesized that enriched environments increase the value of an area in dispute, causing a resident to more fiercely defend a resource-rich environment than...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200011&lng=en&tlng=en |
| _version_ | 1818449311876251648 |
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| author | Vivian Oliveira Kadry Rodrigo Egydio Barreto |
| author_facet | Vivian Oliveira Kadry Rodrigo Egydio Barreto |
| author_sort | Vivian Oliveira Kadry |
| collection | DOAJ |
| description | Among fishes, when residents and intruders fight, residents usually win, most likely because they value the residence more than intruders. We hypothesized that enriched environments increase the value of an area in dispute, causing a resident to more fiercely defend a resource-rich environment than a poor one. However, in the present study, intruder-resident tests with the pearl cichlid, Geophagus brasiliensis, showed environmental enrichment actually reduces aggression and can even lead to co-habitation without fighting. Additionally, in our experiments, the prior residence effect occurred irrespective of enrichment condition. Decreased visibility from increased habitat complexity reduces interactions between fish and consequently might explain the lower aggression observed herein. |
| first_indexed | 2024-12-14T20:33:24Z |
| format | Article |
| id | doaj.art-aaa8f7c7bcaf4471b169b575c37a9d28 |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-14T20:33:24Z |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-aaa8f7c7bcaf4471b169b575c37a9d282022-12-21T22:48:27ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02248232933210.1590/S1679-62252010000200011S1679-62252010000200011Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactionsVivian Oliveira Kadry0Rodrigo Egydio Barreto1Universidade Estadual PaulistaUniversidade Estadual PaulistaAmong fishes, when residents and intruders fight, residents usually win, most likely because they value the residence more than intruders. We hypothesized that enriched environments increase the value of an area in dispute, causing a resident to more fiercely defend a resource-rich environment than a poor one. However, in the present study, intruder-resident tests with the pearl cichlid, Geophagus brasiliensis, showed environmental enrichment actually reduces aggression and can even lead to co-habitation without fighting. Additionally, in our experiments, the prior residence effect occurred irrespective of enrichment condition. Decreased visibility from increased habitat complexity reduces interactions between fish and consequently might explain the lower aggression observed herein.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200011&lng=en&tlng=enFightingTerritorialityIntruder-resident paradigmResource holding powerCichlidae |
| spellingShingle | Vivian Oliveira Kadry Rodrigo Egydio Barreto Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactions Neotropical Ichthyology Fighting Territoriality Intruder-resident paradigm Resource holding power Cichlidae |
| title | Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactions |
| title_full | Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactions |
| title_fullStr | Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactions |
| title_full_unstemmed | Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactions |
| title_short | Environmental enrichment reduces aggression of pearl cichlid, Geophagus brasiliensis, during resident-intruder interactions |
| title_sort | environmental enrichment reduces aggression of pearl cichlid geophagus brasiliensis during resident intruder interactions |
| topic | Fighting Territoriality Intruder-resident paradigm Resource holding power Cichlidae |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200011&lng=en&tlng=en |
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