Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824)
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4013/nbc.2013.83.01 http://hdl.handle.net/11449/227514 |
Resumo: | Habitat used by fish is often related with the requirements of the species, according to their morphological characteristics, feeding, and reproductive strategies. We describe the habitat preference, foraging behavior, and camouflage strategy of Scleromystax barbatus (Callichthyidae: Corydoradinae), an endemic catfish from coastal streams in the Atlantic Forest. The movement and foraging behavior of 11 individuals were observed using focal-fish method, and the habitat structure availability (i.e., depth, bottom type, and mesohabi-tat) was measured in a clearwater stream stretch with 40 m length and 2.8 m width (± 1.5 sd) in southeastern Brazil. In addition, six individuals were captured to verify stomach contents. Habitat selectivity of the species was assessed using the Ivlev electivity index that considers the frequency of occurrence of each habitat variable used by fish in relation to its environmental availability. Scleromystax barbatus selected pools and runs with sandy bottom in depths between 21 cm and 40 cm, and avoided gravel in shallower riffles (up to 10 cm). Individuals foraged close to the bottom in a head-down posture, speculating and revolving the substrate composed by sand, fallen leaves, and twigs. Their long snout and small barbels were used to dislodge the food items of the substrate, which were quickly sucked by the mouth. Aquatic immature insects (mainly trichopterans) were predominant in the stomach contents. Three fish species, Deuterodon iguape Eigenmann, 1907, Mima-goniates microlepis Steindachner, 1877, and Geophagus brasiliensis (Quoy & Gaimard, 1824), were firstly registered following S. barbatus during its foraging activity. The brilliant golden body color with darkish spots of S. barbatus strongly resembles the stream bottom, which indicates disruptive camouflage. © 2013 by Unisinos. |
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Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824)The use of an atlantic forest stream by the catfish scleromystax barbatus (Quoy & Gaimard, 1824)CorydoradinaeDisruptive camouflageFeeding behaviorHabitat useHabitat used by fish is often related with the requirements of the species, according to their morphological characteristics, feeding, and reproductive strategies. We describe the habitat preference, foraging behavior, and camouflage strategy of Scleromystax barbatus (Callichthyidae: Corydoradinae), an endemic catfish from coastal streams in the Atlantic Forest. The movement and foraging behavior of 11 individuals were observed using focal-fish method, and the habitat structure availability (i.e., depth, bottom type, and mesohabi-tat) was measured in a clearwater stream stretch with 40 m length and 2.8 m width (± 1.5 sd) in southeastern Brazil. In addition, six individuals were captured to verify stomach contents. Habitat selectivity of the species was assessed using the Ivlev electivity index that considers the frequency of occurrence of each habitat variable used by fish in relation to its environmental availability. Scleromystax barbatus selected pools and runs with sandy bottom in depths between 21 cm and 40 cm, and avoided gravel in shallower riffles (up to 10 cm). Individuals foraged close to the bottom in a head-down posture, speculating and revolving the substrate composed by sand, fallen leaves, and twigs. Their long snout and small barbels were used to dislodge the food items of the substrate, which were quickly sucked by the mouth. Aquatic immature insects (mainly trichopterans) were predominant in the stomach contents. Three fish species, Deuterodon iguape Eigenmann, 1907, Mima-goniates microlepis Steindachner, 1877, and Geophagus brasiliensis (Quoy & Gaimard, 1824), were firstly registered following S. barbatus during its foraging activity. The brilliant golden body color with darkish spots of S. barbatus strongly resembles the stream bottom, which indicates disruptive camouflage. © 2013 by Unisinos.Laboratório de Ictiologia Universidade Estadual Paulista 'Julio de Mesquita Filho' (UNESP), Rua Cristóvão Colombo, Jardim Nazareth, 15054-000, Sao Jose do Rio Preto, SPDepartamento de Zoologia Universidade Estadual Paulista 'Julio de Mesquita Filho' (UNESP), Avenida 24A, 1515, Bela Vista, 13506-900, Rio Claro, SPLaboratório de Ictiologia Universidade Estadual Paulista 'Julio de Mesquita Filho' (UNESP), Rua Cristóvão Colombo, Jardim Nazareth, 15054-000, Sao Jose do Rio Preto, SPDepartamento de Zoologia Universidade Estadual Paulista 'Julio de Mesquita Filho' (UNESP), Avenida 24A, 1515, Bela Vista, 13506-900, Rio Claro, SPUniversidade Estadual Paulista (UNESP)Gonçalves, Cristina da Silva [UNESP]Cestari, César [UNESP]2022-04-29T07:13:44Z2022-04-29T07:13:44Z2013-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article115-120http://dx.doi.org/10.4013/nbc.2013.83.01Neotropical Biology and Conservation, v. 8, n. 3, p. 115-120, 2013.1809-99392236-3777http://hdl.handle.net/11449/22751410.4013/nbc.2013.83.012-s2.0-84893014678Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporNeotropical Biology and Conservationinfo:eu-repo/semantics/openAccess2022-04-29T07:13:44Zoai:repositorio.unesp.br:11449/227514Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T07:13:44Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824) The use of an atlantic forest stream by the catfish scleromystax barbatus (Quoy & Gaimard, 1824) |
title |
Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824) |
spellingShingle |
Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824) Gonçalves, Cristina da Silva [UNESP] Corydoradinae Disruptive camouflage Feeding behavior Habitat use |
title_short |
Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824) |
title_full |
Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824) |
title_fullStr |
Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824) |
title_full_unstemmed |
Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824) |
title_sort |
Uso de riacho costeiro da mata atlântica pelo limpa-fundo scleromystax barbatus (Quoy & Gaimard, 1824) |
author |
Gonçalves, Cristina da Silva [UNESP] |
author_facet |
Gonçalves, Cristina da Silva [UNESP] Cestari, César [UNESP] |
author_role |
author |
author2 |
Cestari, César [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Gonçalves, Cristina da Silva [UNESP] Cestari, César [UNESP] |
dc.subject.por.fl_str_mv |
Corydoradinae Disruptive camouflage Feeding behavior Habitat use |
topic |
Corydoradinae Disruptive camouflage Feeding behavior Habitat use |
description |
Habitat used by fish is often related with the requirements of the species, according to their morphological characteristics, feeding, and reproductive strategies. We describe the habitat preference, foraging behavior, and camouflage strategy of Scleromystax barbatus (Callichthyidae: Corydoradinae), an endemic catfish from coastal streams in the Atlantic Forest. The movement and foraging behavior of 11 individuals were observed using focal-fish method, and the habitat structure availability (i.e., depth, bottom type, and mesohabi-tat) was measured in a clearwater stream stretch with 40 m length and 2.8 m width (± 1.5 sd) in southeastern Brazil. In addition, six individuals were captured to verify stomach contents. Habitat selectivity of the species was assessed using the Ivlev electivity index that considers the frequency of occurrence of each habitat variable used by fish in relation to its environmental availability. Scleromystax barbatus selected pools and runs with sandy bottom in depths between 21 cm and 40 cm, and avoided gravel in shallower riffles (up to 10 cm). Individuals foraged close to the bottom in a head-down posture, speculating and revolving the substrate composed by sand, fallen leaves, and twigs. Their long snout and small barbels were used to dislodge the food items of the substrate, which were quickly sucked by the mouth. Aquatic immature insects (mainly trichopterans) were predominant in the stomach contents. Three fish species, Deuterodon iguape Eigenmann, 1907, Mima-goniates microlepis Steindachner, 1877, and Geophagus brasiliensis (Quoy & Gaimard, 1824), were firstly registered following S. barbatus during its foraging activity. The brilliant golden body color with darkish spots of S. barbatus strongly resembles the stream bottom, which indicates disruptive camouflage. © 2013 by Unisinos. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-12-01 2022-04-29T07:13:44Z 2022-04-29T07:13:44Z |
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/10.4013/nbc.2013.83.01 Neotropical Biology and Conservation, v. 8, n. 3, p. 115-120, 2013. 1809-9939 2236-3777 http://hdl.handle.net/11449/227514 10.4013/nbc.2013.83.01 2-s2.0-84893014678 |
url |
http://dx.doi.org/10.4013/nbc.2013.83.01 http://hdl.handle.net/11449/227514 |
identifier_str_mv |
Neotropical Biology and Conservation, v. 8, n. 3, p. 115-120, 2013. 1809-9939 2236-3777 10.4013/nbc.2013.83.01 2-s2.0-84893014678 |
dc.language.iso.fl_str_mv |
eng por |
language |
eng por |
dc.relation.none.fl_str_mv |
Neotropical Biology and Conservation |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
115-120 |
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 |
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_version_ |
1799964603257454592 |