Diet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional do INPA |
Texto Completo: | https://repositorio.inpa.gov.br/handle/1/14948 |
Resumo: | This study assessed the diet of two poorly known syntopic fish species of the family Crenuchidae, Characidium aff. declivirostre and Leptocharacidium omospilus, in a Presidente Figueiredo’ rocky stream, Amazonas, Brazil. The stomach contents were analyzed and their Frequency of Occurrence (FO %) and Relative Volume (Vol %) were combined in a Feeding Index (IAi). We examined 20 individuals of C. aff. declivirostre and 23 of L. omospilus. The Morisita-Horn Index was used to estimate the overlap between the diets of these species. Immature insects were the most valuable items consumed by both fish species. The diet of C. aff. declivirostre was mainly composed of larvae and pupae of Chironomidae, while L. omospilus predominantly consumed larvae of Hydroptilidae, Hydropyschidae and Pyralidae. Thus, both species were classified as autochthonous insectivorous. Characidium aff. declivirostre was considered a more specialized species, probably reflecting lower feeding plasticity or the use of more restricted microhabitats compared to L. omospilus. When the food items were analyzed at the family taxonomic level, the diet overlap between these species was considered moderate (Morisita-Horn Index = 0.4). However, a more thorough analysis, at the genus level, indicates a very low diet overlap. Therefore, we conclude that the feeding segregation between C. aff. declivirostre and L. omospilus may favor their co-existence, despite their high phylogenetic closeness. © 2017, Universidade Estadual de Campinas UNICAMP. All rights reserved. |
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Fernandes, SuzanneLeitão, Rafael PereiraDary, Euriz?ngela PereiraGuerreiro, Ana Isabel CamachoZuanon, JansenBührnheim, Cristina Motta2020-05-07T13:57:41Z2020-05-07T13:57:41Z2017https://repositorio.inpa.gov.br/handle/1/1494810.1590/1676-0611-BN-2016-0281This study assessed the diet of two poorly known syntopic fish species of the family Crenuchidae, Characidium aff. declivirostre and Leptocharacidium omospilus, in a Presidente Figueiredo’ rocky stream, Amazonas, Brazil. The stomach contents were analyzed and their Frequency of Occurrence (FO %) and Relative Volume (Vol %) were combined in a Feeding Index (IAi). We examined 20 individuals of C. aff. declivirostre and 23 of L. omospilus. The Morisita-Horn Index was used to estimate the overlap between the diets of these species. Immature insects were the most valuable items consumed by both fish species. The diet of C. aff. declivirostre was mainly composed of larvae and pupae of Chironomidae, while L. omospilus predominantly consumed larvae of Hydroptilidae, Hydropyschidae and Pyralidae. Thus, both species were classified as autochthonous insectivorous. Characidium aff. declivirostre was considered a more specialized species, probably reflecting lower feeding plasticity or the use of more restricted microhabitats compared to L. omospilus. When the food items were analyzed at the family taxonomic level, the diet overlap between these species was considered moderate (Morisita-Horn Index = 0.4). However, a more thorough analysis, at the genus level, indicates a very low diet overlap. Therefore, we conclude that the feeding segregation between C. aff. declivirostre and L. omospilus may favor their co-existence, despite their high phylogenetic closeness. © 2017, Universidade Estadual de Campinas UNICAMP. All rights reserved.Volume 17, Número 1Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessDiet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky streamDieta de duas espécies sintópicas de crenuchidae (Ostariophysi: Characiformes) em um riacho rochoso Amazônicoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleBiota Neotropicaengreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfapplication/pdf1741844https://repositorio.inpa.gov.br/bitstream/1/14948/1/artigo-inpa.pdf95931396ceddf107bf788e3624a14b21MD51CC-LICENSElicense_rdfapplication/octet-stream914https://repositorio.inpa.gov.br/bitstream/1/14948/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD521/149482020-07-14 10:29:40.249oai:repositorio:1/14948Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-07-14T14:29:40Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false |
dc.title.en.fl_str_mv |
Diet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream |
dc.title.alternative.en.fl_str_mv |
Dieta de duas espécies sintópicas de crenuchidae (Ostariophysi: Characiformes) em um riacho rochoso Amazônico |
title |
Diet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream |
spellingShingle |
Diet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream Fernandes, Suzanne |
title_short |
Diet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream |
title_full |
Diet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream |
title_fullStr |
Diet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream |
title_full_unstemmed |
Diet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream |
title_sort |
Diet of two syntopic species of crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream |
author |
Fernandes, Suzanne |
author_facet |
Fernandes, Suzanne Leitão, Rafael Pereira Dary, Euriz?ngela Pereira Guerreiro, Ana Isabel Camacho Zuanon, Jansen Bührnheim, Cristina Motta |
author_role |
author |
author2 |
Leitão, Rafael Pereira Dary, Euriz?ngela Pereira Guerreiro, Ana Isabel Camacho Zuanon, Jansen Bührnheim, Cristina Motta |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Fernandes, Suzanne Leitão, Rafael Pereira Dary, Euriz?ngela Pereira Guerreiro, Ana Isabel Camacho Zuanon, Jansen Bührnheim, Cristina Motta |
description |
This study assessed the diet of two poorly known syntopic fish species of the family Crenuchidae, Characidium aff. declivirostre and Leptocharacidium omospilus, in a Presidente Figueiredo’ rocky stream, Amazonas, Brazil. The stomach contents were analyzed and their Frequency of Occurrence (FO %) and Relative Volume (Vol %) were combined in a Feeding Index (IAi). We examined 20 individuals of C. aff. declivirostre and 23 of L. omospilus. The Morisita-Horn Index was used to estimate the overlap between the diets of these species. Immature insects were the most valuable items consumed by both fish species. The diet of C. aff. declivirostre was mainly composed of larvae and pupae of Chironomidae, while L. omospilus predominantly consumed larvae of Hydroptilidae, Hydropyschidae and Pyralidae. Thus, both species were classified as autochthonous insectivorous. Characidium aff. declivirostre was considered a more specialized species, probably reflecting lower feeding plasticity or the use of more restricted microhabitats compared to L. omospilus. When the food items were analyzed at the family taxonomic level, the diet overlap between these species was considered moderate (Morisita-Horn Index = 0.4). However, a more thorough analysis, at the genus level, indicates a very low diet overlap. Therefore, we conclude that the feeding segregation between C. aff. declivirostre and L. omospilus may favor their co-existence, despite their high phylogenetic closeness. © 2017, Universidade Estadual de Campinas UNICAMP. All rights reserved. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017 |
dc.date.accessioned.fl_str_mv |
2020-05-07T13:57:41Z |
dc.date.available.fl_str_mv |
2020-05-07T13:57:41Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://repositorio.inpa.gov.br/handle/1/14948 |
dc.identifier.doi.none.fl_str_mv |
10.1590/1676-0611-BN-2016-0281 |
url |
https://repositorio.inpa.gov.br/handle/1/14948 |
identifier_str_mv |
10.1590/1676-0611-BN-2016-0281 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Volume 17, Número 1 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Biota Neotropica |
publisher.none.fl_str_mv |
Biota Neotropica |
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