Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western Amazon

Detalhes bibliográficos
Autor(a) principal: Virgilio, Lucena Rocha
Data de Publicação: 2019
Outros Autores: Gomes, Rodrigo, Suçuarana, Monik, Vieira, Lisandro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Biotemas (Online)
Texto Completo: https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n1p65
Resumo: The feeding habit, psammophilous behavior and the morphology of Gymnorhamphichthys rondoni make it a highly specialized species with an important role in stream ecosystems. Accordingly, the aim of the present study was to analyze the use of microhabitats, diet composition, feeding strategies, niche breadth and spatial distribution of G. rondoni species in headwater streams. In each of the three selected streams (P1, P2 and P3), located on the Catuaba Experimental Farm (Acre, Brazil), we collected three samples of organic matter substrate and three of clay during drought, ebb and flood periods. The results showed that the population of G. rondoni increased along the longitudinal gradient, mainly during drought (376 individuals), in which the individuals occupied substrates composed of sand and showed a diet based mainly on benthic prey such as larvae of Diptera and Coleoptera. Thus, the preference for feeding on autochthonous larvae by G. rondoni and their specialized morphology may be due to their relationship with sand microhabitats. Thus, the loss of these microhabitats may negatively influence the population of G. rondoni.
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spelling Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western AmazonAnálise do uso de microhabitat, distribuição espacial e dieta de Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) em riachos de baixa ordem, Amazônia OcidentalThe feeding habit, psammophilous behavior and the morphology of Gymnorhamphichthys rondoni make it a highly specialized species with an important role in stream ecosystems. Accordingly, the aim of the present study was to analyze the use of microhabitats, diet composition, feeding strategies, niche breadth and spatial distribution of G. rondoni species in headwater streams. In each of the three selected streams (P1, P2 and P3), located on the Catuaba Experimental Farm (Acre, Brazil), we collected three samples of organic matter substrate and three of clay during drought, ebb and flood periods. The results showed that the population of G. rondoni increased along the longitudinal gradient, mainly during drought (376 individuals), in which the individuals occupied substrates composed of sand and showed a diet based mainly on benthic prey such as larvae of Diptera and Coleoptera. Thus, the preference for feeding on autochthonous larvae by G. rondoni and their specialized morphology may be due to their relationship with sand microhabitats. Thus, the loss of these microhabitats may negatively influence the population of G. rondoni.O hábito alimentar, psamófilo, e a morfologia de Gymnorhamphichthys rondoni, o tornam uma espécie altamente especializada, com importante papel em sistemas de riachos. Nesse sentido, o objetivo do presente estudo foi analisar o uso de microhabitats, composição da dieta, estratégias alimentares, amplitude de nicho e distribuição espacial da espécie de G. rondoni, em riachos de cabeceiras. Em cada um dos três riachos selecionados (P1, P2 e P3), localizados na Fazenda Experimental Catuaba, Acre, foram amostrados três pontos compostos por substrato de areia, três compostos por substrato de matéria orgânica e três compostos por argila, durante os períodos de seca, vazante e cheia. Os resultados mostraram que a população de G. rondoni aumentou ao longo do gradiente longitudinal, principalmente, durante o período de seca (376 indivíduos), no qual os indivíduos ocuparam substratos compostos por areia e apresentaram dieta baseada, principalmente, por presas bentônicas, como larvas de Diptera e Coleoptera. Assim, a preferência pelo consumo de larvas autóctone por G. rondoni e a sua morfologia especializada podem estar associadas à sua relação com os microhabitats de areia. O que se sugere é que a perda desses microhabitats pode influenciar negativamente a população de G. rondoni.Universidade Federal de Santa Catarina2019-02-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n1p6510.5007/2175-7925.2019v32n1p65Biotemas; v. 32 n. 1 (2019); 65-762175-79250103-1643reponame:Biotemas (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCenghttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n1p65/38491Copyright (c) 2019 Lucena Rocha Virgilio, Rodrigo Gomes, Monik Suçuarana, Lisandro Vieirainfo:eu-repo/semantics/openAccessVirgilio, Lucena RochaGomes, RodrigoSuçuarana, MonikVieira, Lisandro2019-03-01T09:20:52Zoai:periodicos.ufsc.br:article/56501Revistahttp://www.biotemas.ufsc.br/index.htmPUBhttps://periodicos.ufsc.br/index.php/biotemas/oai||carlospinto@ccb.ufsc.br2175-79250103-1643opendoar:2019-03-01T09:20:52Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC)false
dc.title.none.fl_str_mv Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western Amazon
Análise do uso de microhabitat, distribuição espacial e dieta de Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) em riachos de baixa ordem, Amazônia Ocidental
title Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western Amazon
spellingShingle Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western Amazon
Virgilio, Lucena Rocha
title_short Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western Amazon
title_full Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western Amazon
title_fullStr Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western Amazon
title_full_unstemmed Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western Amazon
title_sort Analysis of the use of microhabitats, spatial distribution and diet of Gymnorhamphichthys rondoni (Miranda-Ribeiro, 1920) (Rhamphichthyidae) in low-order streams in western Amazon
author Virgilio, Lucena Rocha
author_facet Virgilio, Lucena Rocha
Gomes, Rodrigo
Suçuarana, Monik
Vieira, Lisandro
author_role author
author2 Gomes, Rodrigo
Suçuarana, Monik
Vieira, Lisandro
author2_role author
author
author
dc.contributor.author.fl_str_mv Virgilio, Lucena Rocha
Gomes, Rodrigo
Suçuarana, Monik
Vieira, Lisandro
description The feeding habit, psammophilous behavior and the morphology of Gymnorhamphichthys rondoni make it a highly specialized species with an important role in stream ecosystems. Accordingly, the aim of the present study was to analyze the use of microhabitats, diet composition, feeding strategies, niche breadth and spatial distribution of G. rondoni species in headwater streams. In each of the three selected streams (P1, P2 and P3), located on the Catuaba Experimental Farm (Acre, Brazil), we collected three samples of organic matter substrate and three of clay during drought, ebb and flood periods. The results showed that the population of G. rondoni increased along the longitudinal gradient, mainly during drought (376 individuals), in which the individuals occupied substrates composed of sand and showed a diet based mainly on benthic prey such as larvae of Diptera and Coleoptera. Thus, the preference for feeding on autochthonous larvae by G. rondoni and their specialized morphology may be due to their relationship with sand microhabitats. Thus, the loss of these microhabitats may negatively influence the population of G. rondoni.
publishDate 2019
dc.date.none.fl_str_mv 2019-02-25
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n1p65
10.5007/2175-7925.2019v32n1p65
url https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n1p65
identifier_str_mv 10.5007/2175-7925.2019v32n1p65
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n1p65/38491
dc.rights.driver.fl_str_mv Copyright (c) 2019 Lucena Rocha Virgilio, Rodrigo Gomes, Monik Suçuarana, Lisandro Vieira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2019 Lucena Rocha Virgilio, Rodrigo Gomes, Monik Suçuarana, Lisandro Vieira
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Santa Catarina
publisher.none.fl_str_mv Universidade Federal de Santa Catarina
dc.source.none.fl_str_mv Biotemas; v. 32 n. 1 (2019); 65-76
2175-7925
0103-1643
reponame:Biotemas (Online)
instname:Universidade Federal de Santa Catarina (UFSC)
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instacron_str UFSC
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reponame_str Biotemas (Online)
collection Biotemas (Online)
repository.name.fl_str_mv Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC)
repository.mail.fl_str_mv ||carlospinto@ccb.ufsc.br
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