Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selection
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/10.1590/S1984-46702015000600004 http://hdl.handle.net/11449/161111 |
Resumo: | We evaluated how seasonality affects the frequency and intensity of fin-nipping, as well as the fish prey preferences of Serrasalmus maculatus Kner, 1858. The study took place in a small reservoir of the Ribeirao Claro River basin, state of Sao Paulo, southeastern Brazil. Fish were sampled monthly from July 2003 to June 2004, using gillnets. Sampling consisted of leaving 50 m of gillnets in the water for approximately 24 hours each month. No seasonal variation in the frequency and intensity of fin-nipping was observed. Among six prey species, piranhas displayed less damage in their fins, possibly due to intraspecific recognition. Under natural conditions, the caudal fins of Cyphocharax modestus (Fernandez-Yepez, 1948) were the most intensively mutilated, which suggests multiple attacks on the same individual. The size of individuals in this species was positively correlated with the mutilated area of the fin, whereas no such correlation was observed for Astyanax altiparanae Garutti & Britski, 2000 and Acestrorhynchus lacustris (Lutken, 1875). The high number of mutilated fish under natural conditions strongly suggests that the relationship between S. maculatus and its prey is more akin to parasitism than to predation. If mutilated fins negatively affect the ability of prey to swim, the spread of S. maculatus might result in an unnatural impact on prey fish assemblages and population structure after damming. |
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Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selectionCommunity dynamicshuman activitiesmutilationprey-predator interactionRibeirao Claro RiverWe evaluated how seasonality affects the frequency and intensity of fin-nipping, as well as the fish prey preferences of Serrasalmus maculatus Kner, 1858. The study took place in a small reservoir of the Ribeirao Claro River basin, state of Sao Paulo, southeastern Brazil. Fish were sampled monthly from July 2003 to June 2004, using gillnets. Sampling consisted of leaving 50 m of gillnets in the water for approximately 24 hours each month. No seasonal variation in the frequency and intensity of fin-nipping was observed. Among six prey species, piranhas displayed less damage in their fins, possibly due to intraspecific recognition. Under natural conditions, the caudal fins of Cyphocharax modestus (Fernandez-Yepez, 1948) were the most intensively mutilated, which suggests multiple attacks on the same individual. The size of individuals in this species was positively correlated with the mutilated area of the fin, whereas no such correlation was observed for Astyanax altiparanae Garutti & Britski, 2000 and Acestrorhynchus lacustris (Lutken, 1875). The high number of mutilated fish under natural conditions strongly suggests that the relationship between S. maculatus and its prey is more akin to parasitism than to predation. If mutilated fins negatively affect the ability of prey to swim, the spread of S. maculatus might result in an unnatural impact on prey fish assemblages and population structure after damming.Univ Estadual Paulista, Inst Biociencias, Dept Zool, BR-13506900 Rio Claro, SP, BrazilUniv Estadual Sudoeste Bahia, Dept Ciencias Biol, BR-45206000 Jequie, BA, BrazilUniv Fed Sao Paulo, Dept Ciencias Mar, BR-17015020 Santos, SP, BrazilUniv Estadual Paulista, Inst Biociencias, Dept Zool, BR-13506900 Rio Claro, SP, BrazilSoc Brasileira Zoologia, Univ Federal ParanaUniversidade Estadual Paulista (Unesp)Univ Estadual Sudoeste BahiaUniversidade Federal de São Paulo (UNIFESP)Silva, Andre T. da [UNESP]Zina, JulianaFerreira, Fabio C.Gomiero, Leandro M. [UNESP]Goitein, Roberto [UNESP]2018-11-26T16:19:10Z2018-11-26T16:19:10Z2015-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article457-462application/pdfhttp://dx.doi.org/10.1590/S1984-46702015000600004Zoologia. Curitiba: Soc Brasileira Zoologia, Univ Federal Parana, v. 32, n. 6, p. 457-462, 2015.1984-4670http://hdl.handle.net/11449/16111110.1590/S1984-46702015000600004S1984-46702015000600457WOS:000367760900004S1984-46702015000600457.pdf9317499005247273Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengZoologia0,405info:eu-repo/semantics/openAccess2023-11-01T06:07:53Zoai:repositorio.unesp.br:11449/161111Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-01T06:07:53Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selection |
title |
Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selection |
spellingShingle |
Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selection Silva, Andre T. da [UNESP] Community dynamics human activities mutilation prey-predator interaction Ribeirao Claro River |
title_short |
Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selection |
title_full |
Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selection |
title_fullStr |
Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selection |
title_full_unstemmed |
Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selection |
title_sort |
Caudal fin-nipping by Serrasalmus maculatus (Characiformes: Serrasalmidae) in a small water reservoir: seasonal variation and prey selection |
author |
Silva, Andre T. da [UNESP] |
author_facet |
Silva, Andre T. da [UNESP] Zina, Juliana Ferreira, Fabio C. Gomiero, Leandro M. [UNESP] Goitein, Roberto [UNESP] |
author_role |
author |
author2 |
Zina, Juliana Ferreira, Fabio C. Gomiero, Leandro M. [UNESP] Goitein, Roberto [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Univ Estadual Sudoeste Bahia Universidade Federal de São Paulo (UNIFESP) |
dc.contributor.author.fl_str_mv |
Silva, Andre T. da [UNESP] Zina, Juliana Ferreira, Fabio C. Gomiero, Leandro M. [UNESP] Goitein, Roberto [UNESP] |
dc.subject.por.fl_str_mv |
Community dynamics human activities mutilation prey-predator interaction Ribeirao Claro River |
topic |
Community dynamics human activities mutilation prey-predator interaction Ribeirao Claro River |
description |
We evaluated how seasonality affects the frequency and intensity of fin-nipping, as well as the fish prey preferences of Serrasalmus maculatus Kner, 1858. The study took place in a small reservoir of the Ribeirao Claro River basin, state of Sao Paulo, southeastern Brazil. Fish were sampled monthly from July 2003 to June 2004, using gillnets. Sampling consisted of leaving 50 m of gillnets in the water for approximately 24 hours each month. No seasonal variation in the frequency and intensity of fin-nipping was observed. Among six prey species, piranhas displayed less damage in their fins, possibly due to intraspecific recognition. Under natural conditions, the caudal fins of Cyphocharax modestus (Fernandez-Yepez, 1948) were the most intensively mutilated, which suggests multiple attacks on the same individual. The size of individuals in this species was positively correlated with the mutilated area of the fin, whereas no such correlation was observed for Astyanax altiparanae Garutti & Britski, 2000 and Acestrorhynchus lacustris (Lutken, 1875). The high number of mutilated fish under natural conditions strongly suggests that the relationship between S. maculatus and its prey is more akin to parasitism than to predation. If mutilated fins negatively affect the ability of prey to swim, the spread of S. maculatus might result in an unnatural impact on prey fish assemblages and population structure after damming. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-12-01 2018-11-26T16:19:10Z 2018-11-26T16:19:10Z |
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/10.1590/S1984-46702015000600004 Zoologia. Curitiba: Soc Brasileira Zoologia, Univ Federal Parana, v. 32, n. 6, p. 457-462, 2015. 1984-4670 http://hdl.handle.net/11449/161111 10.1590/S1984-46702015000600004 S1984-46702015000600457 WOS:000367760900004 S1984-46702015000600457.pdf 9317499005247273 |
url |
http://dx.doi.org/10.1590/S1984-46702015000600004 http://hdl.handle.net/11449/161111 |
identifier_str_mv |
Zoologia. Curitiba: Soc Brasileira Zoologia, Univ Federal Parana, v. 32, n. 6, p. 457-462, 2015. 1984-4670 10.1590/S1984-46702015000600004 S1984-46702015000600457 WOS:000367760900004 S1984-46702015000600457.pdf 9317499005247273 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Zoologia 0,405 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
457-462 application/pdf |
dc.publisher.none.fl_str_mv |
Soc Brasileira Zoologia, Univ Federal Parana |
publisher.none.fl_str_mv |
Soc Brasileira Zoologia, Univ Federal Parana |
dc.source.none.fl_str_mv |
Web of Science 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 |
|
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1799964775035174912 |