Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishes

We experimentally examined the predator-prey relationships between juvenile spotted sorubim Pseudoplastystoma corruscans and young-of-the-year invasive and native fish species of the Paraná River basin, Brazil. Three invasive (peacock bass Cichla piquiti, Nile tilapia Oreochromis niloticus, and chan...

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Autores: Santos, Alejandra F. G. N., Alcaraz Cazorla, Carles, Santos, Luciano Neves dos, Hayashi, Carmino, García-Berthou, Emili
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/7524
Acceso en línea:http://hdl.handle.net/10256/7524
Access Level:acceso abierto
Palabra clave:Ecologia d'aigua dolça -- Brasil
Freshwater ecology -- Brazil
Invasions biològiques -- Brasil
Biological invasions -- Brazil
Espècies introduïdes -- Brasil
Introduced organisms -- Brazil
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spelling Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishesSantos, Alejandra F. G. N.Alcaraz Cazorla, CarlesSantos, Luciano Neves dosHayashi, CarminoGarcía-Berthou, EmiliEcologia d'aigua dolça -- BrasilFreshwater ecology -- BrazilInvasions biològiques -- BrasilBiological invasions -- BrazilEspècies introduïdes -- BrasilIntroduced organisms -- BrazilWe experimentally examined the predator-prey relationships between juvenile spotted sorubim Pseudoplastystoma corruscans and young-of-the-year invasive and native fish species of the Paraná River basin, Brazil. Three invasive (peacock bass Cichla piquiti, Nile tilapia Oreochromis niloticus, and channel catfish Ictalurus punctatus) and two native (yellowtail tetra Astyanax altiparanae and streaked prochilod Prochilodus lineatus) fish species were offered as prey to P. corruscans in 300 L aquaria with three habitat complexity treatments (0%, 50% and 100% structure-covered). Prey survival was variable through time and among species (C. piquiti < O. niloticus < A. altiparanae < P. lineatus < I. punctatus), depending largely on species-specific prey behavior but also on prey size and morphological defenses. Habitat complexity did not directly affect P. corruscans piscivory but some prey species changed their microhabitat use and shoaling behavior among habitat treatments in predator’s presence. Pseudoplatystoma corruscans preyed preferentially on smaller individuals of those invasive species with weak morphological defensive features that persisted in a non-shoaling behavior. Overall, our results contrast with those in a companion experiment using a diurnal predator, suggesting that nocturnal piscivores preferentially prey on different (rather diurnal) fish species and are less affected by habitat complexity. Our findings suggest that recovering the native populations of P. corruscans might help controling some fish species introduced to the Paraná River basin, particularly C. piquiti and O. niloticus, whose parental care is expected to be weak or null at nightSociedade Brasileira de Ictiologia2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/7524Neotropical Ichthyology, 2012, vol. 10, núm. 1, p. 167-176Articles publicats (D-CCAA)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/issn/1679-6225info:eu-repo/semantics/altIdentifier/eissn/1982-0224Attribution-NonCommercial 3.0 Spainhttp://creativecommons.org/licenses/by-nc/3.0/es/info:eu-repo/semantics/openAccessoai:recercat.cat:10256/75242026-05-29T05:05:01Z
dc.title.none.fl_str_mv Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishes
title Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishes
spellingShingle Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishes
Santos, Alejandra F. G. N.
Ecologia d'aigua dolça -- Brasil
Freshwater ecology -- Brazil
Invasions biològiques -- Brasil
Biological invasions -- Brazil
Espècies introduïdes -- Brasil
Introduced organisms -- Brazil
title_short Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishes
title_full Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishes
title_fullStr Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishes
title_full_unstemmed Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishes
title_sort Experimental assessment of the effects of a Neotropical nocturnal piscivore on juvenile native and invasive fishes
dc.creator.none.fl_str_mv Santos, Alejandra F. G. N.
Alcaraz Cazorla, Carles
Santos, Luciano Neves dos
Hayashi, Carmino
García-Berthou, Emili
author Santos, Alejandra F. G. N.
author_facet Santos, Alejandra F. G. N.
Alcaraz Cazorla, Carles
Santos, Luciano Neves dos
Hayashi, Carmino
García-Berthou, Emili
author_role author
author2 Alcaraz Cazorla, Carles
Santos, Luciano Neves dos
Hayashi, Carmino
García-Berthou, Emili
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ecologia d'aigua dolça -- Brasil
Freshwater ecology -- Brazil
Invasions biològiques -- Brasil
Biological invasions -- Brazil
Espècies introduïdes -- Brasil
Introduced organisms -- Brazil
topic Ecologia d'aigua dolça -- Brasil
Freshwater ecology -- Brazil
Invasions biològiques -- Brasil
Biological invasions -- Brazil
Espècies introduïdes -- Brasil
Introduced organisms -- Brazil
description We experimentally examined the predator-prey relationships between juvenile spotted sorubim Pseudoplastystoma corruscans and young-of-the-year invasive and native fish species of the Paraná River basin, Brazil. Three invasive (peacock bass Cichla piquiti, Nile tilapia Oreochromis niloticus, and channel catfish Ictalurus punctatus) and two native (yellowtail tetra Astyanax altiparanae and streaked prochilod Prochilodus lineatus) fish species were offered as prey to P. corruscans in 300 L aquaria with three habitat complexity treatments (0%, 50% and 100% structure-covered). Prey survival was variable through time and among species (C. piquiti < O. niloticus < A. altiparanae < P. lineatus < I. punctatus), depending largely on species-specific prey behavior but also on prey size and morphological defenses. Habitat complexity did not directly affect P. corruscans piscivory but some prey species changed their microhabitat use and shoaling behavior among habitat treatments in predator’s presence. Pseudoplatystoma corruscans preyed preferentially on smaller individuals of those invasive species with weak morphological defensive features that persisted in a non-shoaling behavior. Overall, our results contrast with those in a companion experiment using a diurnal predator, suggesting that nocturnal piscivores preferentially prey on different (rather diurnal) fish species and are less affected by habitat complexity. Our findings suggest that recovering the native populations of P. corruscans might help controling some fish species introduced to the Paraná River basin, particularly C. piquiti and O. niloticus, whose parental care is expected to be weak or null at night
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/7524
url http://hdl.handle.net/10256/7524
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1679-6225
info:eu-repo/semantics/altIdentifier/eissn/1982-0224
dc.rights.none.fl_str_mv Attribution-NonCommercial 3.0 Spain
http://creativecommons.org/licenses/by-nc/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial 3.0 Spain
http://creativecommons.org/licenses/by-nc/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sociedade Brasileira de Ictiologia
publisher.none.fl_str_mv Sociedade Brasileira de Ictiologia
dc.source.none.fl_str_mv Neotropical Ichthyology, 2012, vol. 10, núm. 1, p. 167-176
Articles publicats (D-CCAA)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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