Ecomorphology of Astyanax species in streams with different substrates
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Zoologia (Curitiba. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000100006 |
Resumo: | In the present study, we assessed the ecomorphology of two species of Astyanax in streams with different substrates found in the Rio São Francisco Basin. The dominant substrate of each stream was defined as either "fine" (0 to 2 mm), "gravel" (2 to 250 mm), "rock" (> 250 mm), or "leaf bank". We analyzed a total of 22 ecomorphological attributes of Astyanax intermedius Eigenmann, 1908 (127 individuals) and Astyanax rivularis (Lütken, 1875) (238 individuals) adults. We detected significant ecomorphological differences between the populations of A. rivularis and A. intermedius from habitats with different types of substrates. However, the two species did not show the same morphological differences depending on the type of substrate. These results confirmed the hypothesis that individuals from environments with different characteristics may have different ecomorphological patterns. Knowing that morphology is associated with habitat use and available resources, the loss of a resource or a modification in the environment may directly affect the permanence of a species, leading to a loss of morphologic diversity. |
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Zoologia (Curitiba. Online) |
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Ecomorphology of Astyanax species in streams with different substratesConvergencedivergenceecomorphological attributesfreshwater fishhabitat diversityintraspecific differencesIn the present study, we assessed the ecomorphology of two species of Astyanax in streams with different substrates found in the Rio São Francisco Basin. The dominant substrate of each stream was defined as either "fine" (0 to 2 mm), "gravel" (2 to 250 mm), "rock" (> 250 mm), or "leaf bank". We analyzed a total of 22 ecomorphological attributes of Astyanax intermedius Eigenmann, 1908 (127 individuals) and Astyanax rivularis (Lütken, 1875) (238 individuals) adults. We detected significant ecomorphological differences between the populations of A. rivularis and A. intermedius from habitats with different types of substrates. However, the two species did not show the same morphological differences depending on the type of substrate. These results confirmed the hypothesis that individuals from environments with different characteristics may have different ecomorphological patterns. Knowing that morphology is associated with habitat use and available resources, the loss of a resource or a modification in the environment may directly affect the permanence of a species, leading to a loss of morphologic diversity.Sociedade Brasileira de Zoologia2014-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000100006Zoologia (Curitiba) v.31 n.1 2014reponame:Zoologia (Curitiba. Online)instname:Sociedade Brasileira de Zoologiainstacron:SBZ10.1590/S1984-46702014000100006info:eu-repo/semantics/openAccessSouza,Marcela A.Fagundes,Daniela C.Leal,Cecília G.Pompeu,Paulo S.eng2014-03-21T00:00:00Zoai:scielo:S1984-46702014000100006Revistahttp://www.scielo.br/zoolONGhttps://old.scielo.br/oai/scielo-oai.phpsbz@sbzoologia.org.br1984-46891984-4670opendoar:2014-03-21T00:00Zoologia (Curitiba. Online) - Sociedade Brasileira de Zoologiafalse |
dc.title.none.fl_str_mv |
Ecomorphology of Astyanax species in streams with different substrates |
title |
Ecomorphology of Astyanax species in streams with different substrates |
spellingShingle |
Ecomorphology of Astyanax species in streams with different substrates Souza,Marcela A. Convergence divergence ecomorphological attributes freshwater fish habitat diversity intraspecific differences |
title_short |
Ecomorphology of Astyanax species in streams with different substrates |
title_full |
Ecomorphology of Astyanax species in streams with different substrates |
title_fullStr |
Ecomorphology of Astyanax species in streams with different substrates |
title_full_unstemmed |
Ecomorphology of Astyanax species in streams with different substrates |
title_sort |
Ecomorphology of Astyanax species in streams with different substrates |
author |
Souza,Marcela A. |
author_facet |
Souza,Marcela A. Fagundes,Daniela C. Leal,Cecília G. Pompeu,Paulo S. |
author_role |
author |
author2 |
Fagundes,Daniela C. Leal,Cecília G. Pompeu,Paulo S. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Souza,Marcela A. Fagundes,Daniela C. Leal,Cecília G. Pompeu,Paulo S. |
dc.subject.por.fl_str_mv |
Convergence divergence ecomorphological attributes freshwater fish habitat diversity intraspecific differences |
topic |
Convergence divergence ecomorphological attributes freshwater fish habitat diversity intraspecific differences |
description |
In the present study, we assessed the ecomorphology of two species of Astyanax in streams with different substrates found in the Rio São Francisco Basin. The dominant substrate of each stream was defined as either "fine" (0 to 2 mm), "gravel" (2 to 250 mm), "rock" (> 250 mm), or "leaf bank". We analyzed a total of 22 ecomorphological attributes of Astyanax intermedius Eigenmann, 1908 (127 individuals) and Astyanax rivularis (Lütken, 1875) (238 individuals) adults. We detected significant ecomorphological differences between the populations of A. rivularis and A. intermedius from habitats with different types of substrates. However, the two species did not show the same morphological differences depending on the type of substrate. These results confirmed the hypothesis that individuals from environments with different characteristics may have different ecomorphological patterns. Knowing that morphology is associated with habitat use and available resources, the loss of a resource or a modification in the environment may directly affect the permanence of a species, leading to a loss of morphologic diversity. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-02-01 |
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=S1984-46702014000100006 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000100006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1984-46702014000100006 |
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 |
Sociedade Brasileira de Zoologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zoologia |
dc.source.none.fl_str_mv |
Zoologia (Curitiba) v.31 n.1 2014 reponame:Zoologia (Curitiba. Online) instname:Sociedade Brasileira de Zoologia instacron:SBZ |
instname_str |
Sociedade Brasileira de Zoologia |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Zoologia (Curitiba. Online) |
collection |
Zoologia (Curitiba. Online) |
repository.name.fl_str_mv |
Zoologia (Curitiba. Online) - Sociedade Brasileira de Zoologia |
repository.mail.fl_str_mv |
sbz@sbzoologia.org.br |
_version_ |
1750318091625037824 |