Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream system

Detalhes bibliográficos
Autor(a) principal: SOARES,Bruno Eleres
Data de Publicação: 2020
Outros Autores: BENONE,Naraiana Loureiro, ROSA,Daniela Cristina Oliveira, MONTAG,Luciano Fogaça de Assis
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Acta Amazonica
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000100054
Resumo: ABSTRACT Environmental variation affects the availability of spatial and trophic resources in Amazonian streams and may be important factors structuring the diet of fishes. We analyzed the diet composition and trophic niche breadth of the lebiasinid splash tetra, Copella arnoldi, aiming to evaluate how environmental variation in Amazonian streams affects the species’ trophic niche. Fish were captured and environmental factors were recorded in 20 streams in the Caxiuanã National Forest, in the eastern Amazon, in November 2010. We made a semi-quantitative analysis of stomach contents of 200 individuals. Copella arnoldi exhibited an omnivorous diet composed mainly of detritus and allochthonous invertebrates. Environmental variation (stream width, stream depth, canopy cover and flow) did not affect the diet composition or trophic niche breadth of the species, possibly due to the regional integrity of the forest within the boundaries of the protected area. Riparian cover probably minimizes the effect of the small-scale variations in food resources, thus leading to a locally homogeneous diet composition in the splash tetra C. arnoldi.
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spelling Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream systemenvironmental variationLebiasinidaeniche breadthtrophic ecologyBrazilian AmazonABSTRACT Environmental variation affects the availability of spatial and trophic resources in Amazonian streams and may be important factors structuring the diet of fishes. We analyzed the diet composition and trophic niche breadth of the lebiasinid splash tetra, Copella arnoldi, aiming to evaluate how environmental variation in Amazonian streams affects the species’ trophic niche. Fish were captured and environmental factors were recorded in 20 streams in the Caxiuanã National Forest, in the eastern Amazon, in November 2010. We made a semi-quantitative analysis of stomach contents of 200 individuals. Copella arnoldi exhibited an omnivorous diet composed mainly of detritus and allochthonous invertebrates. Environmental variation (stream width, stream depth, canopy cover and flow) did not affect the diet composition or trophic niche breadth of the species, possibly due to the regional integrity of the forest within the boundaries of the protected area. Riparian cover probably minimizes the effect of the small-scale variations in food resources, thus leading to a locally homogeneous diet composition in the splash tetra C. arnoldi.Instituto Nacional de Pesquisas da Amazônia2020-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000100054Acta Amazonica v.50 n.1 2020reponame:Acta Amazonicainstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPA10.1590/1809-4392201802681info:eu-repo/semantics/openAccessSOARES,Bruno EleresBENONE,Naraiana LoureiroROSA,Daniela Cristina OliveiraMONTAG,Luciano Fogaça de Assiseng2020-02-19T00:00:00Zoai:scielo:S0044-59672020000100054Revistahttps://acta.inpa.gov.br/PUBhttps://old.scielo.br/oai/scielo-oai.phpacta@inpa.gov.br||acta@inpa.gov.br1809-43920044-5967opendoar:2020-02-19T00:00Acta Amazonica - Instituto Nacional de Pesquisas da Amazônia (INPA)false
dc.title.none.fl_str_mv Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream system
title Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream system
spellingShingle Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream system
SOARES,Bruno Eleres
environmental variation
Lebiasinidae
niche breadth
trophic ecology
Brazilian Amazon
title_short Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream system
title_full Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream system
title_fullStr Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream system
title_full_unstemmed Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream system
title_sort Do local environmental factors structure the trophic niche of the splash tetra, Copella arnoldi? A test in an Amazonian stream system
author SOARES,Bruno Eleres
author_facet SOARES,Bruno Eleres
BENONE,Naraiana Loureiro
ROSA,Daniela Cristina Oliveira
MONTAG,Luciano Fogaça de Assis
author_role author
author2 BENONE,Naraiana Loureiro
ROSA,Daniela Cristina Oliveira
MONTAG,Luciano Fogaça de Assis
author2_role author
author
author
dc.contributor.author.fl_str_mv SOARES,Bruno Eleres
BENONE,Naraiana Loureiro
ROSA,Daniela Cristina Oliveira
MONTAG,Luciano Fogaça de Assis
dc.subject.por.fl_str_mv environmental variation
Lebiasinidae
niche breadth
trophic ecology
Brazilian Amazon
topic environmental variation
Lebiasinidae
niche breadth
trophic ecology
Brazilian Amazon
description ABSTRACT Environmental variation affects the availability of spatial and trophic resources in Amazonian streams and may be important factors structuring the diet of fishes. We analyzed the diet composition and trophic niche breadth of the lebiasinid splash tetra, Copella arnoldi, aiming to evaluate how environmental variation in Amazonian streams affects the species’ trophic niche. Fish were captured and environmental factors were recorded in 20 streams in the Caxiuanã National Forest, in the eastern Amazon, in November 2010. We made a semi-quantitative analysis of stomach contents of 200 individuals. Copella arnoldi exhibited an omnivorous diet composed mainly of detritus and allochthonous invertebrates. Environmental variation (stream width, stream depth, canopy cover and flow) did not affect the diet composition or trophic niche breadth of the species, possibly due to the regional integrity of the forest within the boundaries of the protected area. Riparian cover probably minimizes the effect of the small-scale variations in food resources, thus leading to a locally homogeneous diet composition in the splash tetra C. arnoldi.
publishDate 2020
dc.date.none.fl_str_mv 2020-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000100054
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000100054
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1809-4392201802681
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto Nacional de Pesquisas da Amazônia
publisher.none.fl_str_mv Instituto Nacional de Pesquisas da Amazônia
dc.source.none.fl_str_mv Acta Amazonica v.50 n.1 2020
reponame:Acta Amazonica
instname:Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron:INPA
instname_str Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron_str INPA
institution INPA
reponame_str Acta Amazonica
collection Acta Amazonica
repository.name.fl_str_mv Acta Amazonica - Instituto Nacional de Pesquisas da Amazônia (INPA)
repository.mail.fl_str_mv acta@inpa.gov.br||acta@inpa.gov.br
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