Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
| العنوان: | Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River |
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| المؤلفون: | Ivan Sazima, Domingos Garrone-Neto |
| المساهمون: | Universidade Estadual Paulista (Unesp), Universidade Estadual de Campinas (UNICAMP) |
| المصدر: | Neotropical Ichthyology v.7 n.1 2009 Neotropical ichthyology Sociedade Brasileira de Ictiologia (SBI) instacron:SBI Neotropical Ichthyology, Volume: 7, Issue: 1, Pages: 113-116, Published: MAR 2009 SciELO Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Neotropical Ichthyology, Vol 7, Iss 1, Pp 113-116 |
| بيانات النشر: | Sociedade Brasileira de Ictiologia, 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Potamotrygonidae, Variable hunting tactics, biology, Potamotrygon motoro, Ecology, Foraging, Potamotrygon falkneri, Aquatic Science, biology.organism_classification, Predation, lcsh:Zoology, Parana river, Animal Science and Zoology, lcsh:QL1-991, Southwestern Brazil, Ecology, Evolution, Behavior and Systematics |
| الوصف: | Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:43:35Z No. of bitstreams: 1 S1679-62252009000100015.pdf: 1236029 bytes, checksum: 0db735a861b85c1a09fd1d26acbd43d2 (MD5) Made available in DSpace on 2013-08-22T18:43:35Z (GMT). No. of bitstreams: 1 S1679-62252009000100015.pdf: 1236029 bytes, checksum: 0db735a861b85c1a09fd1d26acbd43d2 (MD5) Previous issue date: 2009-03-01 Made available in DSpace on 2013-09-30T19:31:21Z (GMT). No. of bitstreams: 2 S1679-62252009000100015.pdf: 1236029 bytes, checksum: 0db735a861b85c1a09fd1d26acbd43d2 (MD5) S1679-62252009000100015.pdf.txt: 13566 bytes, checksum: e3930006c91583881e8a955df1a1cac8 (MD5) Previous issue date: 2009-03-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:54:00Z No. of bitstreams: 2 S1679-62252009000100015.pdf: 1236029 bytes, checksum: 0db735a861b85c1a09fd1d26acbd43d2 (MD5) S1679-62252009000100015.pdf.txt: 13566 bytes, checksum: e3930006c91583881e8a955df1a1cac8 (MD5) Made available in DSpace on 2014-05-20T13:54:00Z (GMT). No. of bitstreams: 2 S1679-62252009000100015.pdf: 1236029 bytes, checksum: 0db735a861b85c1a09fd1d26acbd43d2 (MD5) S1679-62252009000100015.pdf.txt: 13566 bytes, checksum: e3930006c91583881e8a955df1a1cac8 (MD5) Previous issue date: 2009-03-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) As táticas de caça de raias potamotrigonídeas permanecem sem registro sob condições naturais. Três táticas de forrageamento são aqui descritas para Potamotrygon falkneri e P. motoro, com base em observações subaquáticas no curso superior do rio Paraná. Ambas as espécies apresentaram comportamento semelhante. A tática mais comum foi a de ondular as margens do disco próximo ao, ou no, fundo e assim perturbando o substrato e revelando presas abrigadas. Outra tática foi a de investir sobre presas concentradas no raso. A tática menos frequente foi a de apanhar presas aderidas ao substrato. A primeira tática é comum em diversas espécies de raias marinhas da família Dasyatidae, ao passo que as outras duas (em particular apanhar presas em substratos acima da superfície da água) podem estar restritas a Potamotrygonidae. 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. Universidade Estadual Paulista Departamento de Zoologia Universidade Estadual de Campinas Museu de Zoologia Universidade Estadual Paulista Departamento de Zoologia |
| وصف الملف: | text/html |
| اللغة: | English |
| تدمد: | 1679-6225 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09db06098e0f6135f7432f581ea9c037 http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100015 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....09db06098e0f6135f7432f581ea9c037 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16796225 |
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