Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River

Detalhes bibliográficos
Autor(a) principal: Garrone-Neto,Domingos
Data de Publicação: 2009
Outros Autores: Sazima,Ivan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Neotropical ichthyology (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100015
Resumo: Hunting tactics of potamotrygonid freshwater rays remain unreported under natural conditions. Three main foraging tactics of Potamotrygon falkneri and P. motoro are described here based on underwater observations in the upper Paraná River. Both species displayed similar behaviors. The most common tactic was to undulate the disc margins close to, or on, the bottom and thus stirring the substrate and uncovering hidden preys. Another tactic was to charge upon prey concentrated in the shallows. The least common tactic was to pick out prey adhered to the substrate. The first tactic is widespread in several species of marine rays in the Dasyatidae, whereas the remainder (especially picking up prey on substrata above water surface) may be restricted to the Potamotrygonidae.
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spelling Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná RiverPotamotrygonidaePotamotrygon falkneriPotamotrygon motoroVariable hunting tacticsSouthwestern BrazilHunting tactics of potamotrygonid freshwater rays remain unreported under natural conditions. Three main foraging tactics of Potamotrygon falkneri and P. motoro are described here based on underwater observations in the upper Paraná River. Both species displayed similar behaviors. The most common tactic was to undulate the disc margins close to, or on, the bottom and thus stirring the substrate and uncovering hidden preys. Another tactic was to charge upon prey concentrated in the shallows. The least common tactic was to pick out prey adhered to the substrate. The first tactic is widespread in several species of marine rays in the Dasyatidae, whereas the remainder (especially picking up prey on substrata above water surface) may be restricted to the Potamotrygonidae.Sociedade Brasileira de Ictiologia2009-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100015Neotropical Ichthyology v.7 n.1 2009reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/S1679-62252009000100015info:eu-repo/semantics/openAccessGarrone-Neto,DomingosSazima,Ivaneng2009-04-09T00:00:00Zoai:scielo:S1679-62252009000100015Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2009-04-09T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false
dc.title.none.fl_str_mv Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
title Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
spellingShingle Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
Garrone-Neto,Domingos
Potamotrygonidae
Potamotrygon falkneri
Potamotrygon motoro
Variable hunting tactics
Southwestern Brazil
title_short Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
title_full Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
title_fullStr Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
title_full_unstemmed Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
title_sort Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
author Garrone-Neto,Domingos
author_facet Garrone-Neto,Domingos
Sazima,Ivan
author_role author
author2 Sazima,Ivan
author2_role author
dc.contributor.author.fl_str_mv Garrone-Neto,Domingos
Sazima,Ivan
dc.subject.por.fl_str_mv Potamotrygonidae
Potamotrygon falkneri
Potamotrygon motoro
Variable hunting tactics
Southwestern Brazil
topic Potamotrygonidae
Potamotrygon falkneri
Potamotrygon motoro
Variable hunting tactics
Southwestern Brazil
description Hunting tactics of potamotrygonid freshwater rays remain unreported under natural conditions. Three main foraging tactics of Potamotrygon falkneri and P. motoro are described here based on underwater observations in the upper Paraná River. Both species displayed similar behaviors. The most common tactic was to undulate the disc margins close to, or on, the bottom and thus stirring the substrate and uncovering hidden preys. Another tactic was to charge upon prey concentrated in the shallows. The least common tactic was to pick out prey adhered to the substrate. The first tactic is widespread in several species of marine rays in the Dasyatidae, whereas the remainder (especially picking up prey on substrata above water surface) may be restricted to the Potamotrygonidae.
publishDate 2009
dc.date.none.fl_str_mv 2009-03-01
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=S1679-62252009000100015
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100015
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1679-62252009000100015
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 Ictiologia
publisher.none.fl_str_mv Sociedade Brasileira de Ictiologia
dc.source.none.fl_str_mv Neotropical Ichthyology v.7 n.1 2009
reponame:Neotropical ichthyology (Online)
instname:Sociedade Brasileira de Ictiologia (SBI)
instacron:SBI
instname_str Sociedade Brasileira de Ictiologia (SBI)
instacron_str SBI
institution SBI
reponame_str Neotropical ichthyology (Online)
collection Neotropical ichthyology (Online)
repository.name.fl_str_mv Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)
repository.mail.fl_str_mv ||neoichth@nupelia.uem.br
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