Water temperature affects aggressive interactions in a Neotropical cichlid fish
ABSTRACT Changes in water temperature may affect the aggressive behavior of aquatic organisms, such as fish, either by changing some physiological mechanisms or by increasing the probability of encounters between individuals as a result of variation in their swimming activity. In our study, we evalu...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
2018-03-01
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100212&lng=en&tlng=en |
| _version_ | 1819059639202873344 |
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| author | Manuela L. Brandão Gisele Colognesi Marcela C. Bolognesi Roselene S. Costa-Ferreira Thaís B. Carvalho Eliane Gonçalves-de-Freitas |
| author_facet | Manuela L. Brandão Gisele Colognesi Marcela C. Bolognesi Roselene S. Costa-Ferreira Thaís B. Carvalho Eliane Gonçalves-de-Freitas |
| author_sort | Manuela L. Brandão |
| collection | DOAJ |
| description | ABSTRACT Changes in water temperature may affect the aggressive behavior of aquatic organisms, such as fish, either by changing some physiological mechanisms or by increasing the probability of encounters between individuals as a result of variation in their swimming activity. In our study, we evaluated the influence of increasing and decreasing temperature on the aggressive behavior of the Neotropical cichlid fish Cichlasoma paranaense. Firstly, we tested the critical thermal maximum (CTMax) tolerated by this species. Then, we tested the effect of decreasing or increasing the water temperature in 6o C (starting at 27° C) on the aggressive interactions of fish under isolation or housed in groups. We found a CTMax value of 39° C for C. paranaense. We also observe that a 6° C decrease in water temperature lowers swimming activity and aggressive interactions in both isolated and group-housed fish, as expected. On the other hand, the increase in temperature had no effect on the fish’s aggressive behavior, neither for isolated nor for grouped fish. We concluded that C. paranaense shows high tolerance to elevated temperatures and, in turn, it does not affect aggressive behavior. Nevertheless, we cannot dismiss possible effects of elevated temperatures on aggressive interactions over longer periods. |
| first_indexed | 2024-12-21T14:14:17Z |
| format | Article |
| id | doaj.art-29a8fa6c822d485abde1d8c6e730f715 |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-21T14:14:17Z |
| publishDate | 2018-03-01 |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-29a8fa6c822d485abde1d8c6e730f7152022-12-21T19:00:58ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242018-03-0116110.1590/1982-0224-20170081S1679-62252018000100212Water temperature affects aggressive interactions in a Neotropical cichlid fishManuela L. BrandãoGisele ColognesiMarcela C. BolognesiRoselene S. Costa-FerreiraThaís B. CarvalhoEliane Gonçalves-de-FreitasABSTRACT Changes in water temperature may affect the aggressive behavior of aquatic organisms, such as fish, either by changing some physiological mechanisms or by increasing the probability of encounters between individuals as a result of variation in their swimming activity. In our study, we evaluated the influence of increasing and decreasing temperature on the aggressive behavior of the Neotropical cichlid fish Cichlasoma paranaense. Firstly, we tested the critical thermal maximum (CTMax) tolerated by this species. Then, we tested the effect of decreasing or increasing the water temperature in 6o C (starting at 27° C) on the aggressive interactions of fish under isolation or housed in groups. We found a CTMax value of 39° C for C. paranaense. We also observe that a 6° C decrease in water temperature lowers swimming activity and aggressive interactions in both isolated and group-housed fish, as expected. On the other hand, the increase in temperature had no effect on the fish’s aggressive behavior, neither for isolated nor for grouped fish. We concluded that C. paranaense shows high tolerance to elevated temperatures and, in turn, it does not affect aggressive behavior. Nevertheless, we cannot dismiss possible effects of elevated temperatures on aggressive interactions over longer periods.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100212&lng=en&tlng=enComportamento agonísticoHierarquia socialIsolamento socialMudanças ambientais térmicasTemperatura crítica máxima |
| spellingShingle | Manuela L. Brandão Gisele Colognesi Marcela C. Bolognesi Roselene S. Costa-Ferreira Thaís B. Carvalho Eliane Gonçalves-de-Freitas Water temperature affects aggressive interactions in a Neotropical cichlid fish Neotropical Ichthyology Comportamento agonístico Hierarquia social Isolamento social Mudanças ambientais térmicas Temperatura crítica máxima |
| title | Water temperature affects aggressive interactions in a Neotropical cichlid fish |
| title_full | Water temperature affects aggressive interactions in a Neotropical cichlid fish |
| title_fullStr | Water temperature affects aggressive interactions in a Neotropical cichlid fish |
| title_full_unstemmed | Water temperature affects aggressive interactions in a Neotropical cichlid fish |
| title_short | Water temperature affects aggressive interactions in a Neotropical cichlid fish |
| title_sort | water temperature affects aggressive interactions in a neotropical cichlid fish |
| topic | Comportamento agonístico Hierarquia social Isolamento social Mudanças ambientais térmicas Temperatura crítica máxima |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100212&lng=en&tlng=en |
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