Uruguay River
Mostrando 1-12 de 51 artigos, teses e dissertações.
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1. Fishes community composition and patterns of species distribution in Neotropical streams
Resumo: A ictiofauna de riachos na região Neotropical ainda não é totalmente conhecida. Este estudo objetiva investigar a composição da ictiofauna de seis riachos da sub-bacia do rio Ijuí, estado do Rio Grande do Sul, inseridos na bacia do rio Uruguai, de forma a contribuir no conhecimento da riqueza e distribuição de espécies de peixes no sul do Br
Biota Neotrop.. Publicado em: 09/12/2019
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2. Seasonal and longitudinal variation in fish assemblage structure along an unregulated stretch of the Middle Uruguay River
RESUMO Os padrões de diversidade e suas causas continuam sendo questões importantes, especialmente em ecossistemas que preservam condições naturais. Este é o caso da diversidade de peixes em grandes rios neotropicais. Neste contexto, investigamos padrões de diversidade de peixes ao longo de um extenso gradiente fluvial (ca. 450 km) no médio rio Urugua
Neotrop. ichthyol.. Publicado em: 02/12/2019
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3. Equine pythiosis in the eastern wetlands of Uruguay
RESUMO: Pitiose é uma doença granulomatosa e ulcerativa da pele dos equinos causada pelo oomyceto Pythium insidiosum (Pythiaceae). O objetivo deste trabalho foi descrever sete casos de pitiose equina que ocorreram de 2012 a 2017 na região leste do Uruguai. Seis dos sete casos ocorreram no ecossistema de áreas pantanosas da bacia da bacia da Lagoa Mirim M
Pesq. Vet. Bras.. Publicado em: 30/09/2019
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4. Redescription of Schizodon dissimilis and appraisal of the dark barred species of the genus (Characiformes: Anostomidae)
RESUMO Schizodon dissimilis é redescrita com base em síntipos e outros espécimes coletados nos rios Parnaíba, Jaguaribe e Mearim, e um lectótipo e paralectótipos são designados. Schizodon dissimilis é distinta das espécies Amazônicas e de seus congêneres do sudeste do Brasil por possuir quatro barras transversais castanho-escuras sem uma listra lo
Neotrop. ichthyol.. Publicado em: 23/09/2019
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5. A new species of whiptail armored catfish, genus Pseudohemiodon (Siluriformes: Loricariidae) from the Orinoco River basin, Llanos region of Colombia and Venezuela
ABSTRACT A new species of whiptail armored catfish belonging to the genus Pseudohemiodon is described. The new species inhabits aquatic systems of the Orinoco River basin, mostly in the Llanos region of Colombia and Venezuela. Previously, it had identified as P. laticeps erroneously. The genus Pseudohemiodon includes seven known species inhabit Amazon and Pa
Neotrop. ichthyol.. Publicado em: 18/07/2019
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6. Fish fauna of the Pelotas River, Upper Uruguay River, southern Brazil
Resumo: A fauna de peixes do rio Pelotas, bacia do Alto Uruguai foi inventariada. As amostragens foram realizadas trimestralmente entre agosto de 2013 e maio de 2014, em 14 pontos da bacia do rio Pelotas, utilizando-se redes de emalhar de diferentes tamanhos, redes de arrasto, tarrafas e pesca elétrica. No total, foram registrados 7.745 exemplares, compreen
Biota Neotrop.. Publicado em: 27/06/2019
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7. Geographic variation of Moenkhausia bonita (Characiformes: Characidae) in the rio de la Plata basin, with distributional comments on M. intermedia
ABSTRACT Moenkhausia bonita occurs in numerous additional localities from the Bermejo, Paraná, Paraguay, and Uruguay river basins. Given that this finding greatly expands the distributional range of M. bonita, we carried out an intraspecific comparison, using multivariate methods for 18 morphometric and eight meristic characters taken from a comprehensive s
Neotrop. ichthyol.. Publicado em: 11/03/2019
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8. Presence of Lutzomyia longipalpis and Nyssomyia whitmani in Entre Rios, Argentina
ABSTRACT The objective of this study was to evaluate the presence of Lutzomyia longipalpis in the Argentine city of Concordia, in the province of Entre Rios, without record of this species despite previous samplings, but with canine cases of visceral leishmaniasis and Lu. longipalpis reports both, from Northern Argentine localities and from the city of Salto
Rev. Inst. Med. trop. S. Paulo. Publicado em: 22/10/2018
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9. Stranded humpback whale (Megaptera novaeangliae) (Cetacea: Balaenopteridae) in Paraná River Delta, Buenos Aires Province, Argentina. Comments on the occurrence of marine mammals in the La Plata River Basin
Abstract The humpback whale (Megaptera novaeangliae) is distributed among most oceans and seas of the globe (except Mediterranean Sea). These whales migrate from feeding regions in the Antarctic waters to breeding areas in tropical and subtropical seas. Here we report the stranding of a female young humpback whale, which was founded dead in the vicinity of t
Pap. Avulsos Zool.. Publicado em: 19/03/2018
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10. Astyanax taurorum a new species from dos Touros River, Pelotas River drainage, an upland southern Brazilian river (Characiformes: Characidae)
ABSTRACT A new species of Astyanax belonging to the Astyanax scabripinnis complex is described from dos Touros River, tributary of the Pelotas River, Uruguay River basin. Astyanax taurorum sp. nov. is distinguished from other species of the Astyanax scabripinnis species complex by having two humeral spots, the first vertically elongated; teeth of inner row o
Zoologia (Curitiba). Publicado em: 23/10/2017
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11. Migration and brackish environment use of Prochilodus lineatus (Characiformes: Prochilodontidae) inferred by Sr:Ca ratio transects of otolith
ABSTRACT The streaked prochilod, Prochilodus lineatus, represents the most important fishery in the La Plata Basin (South America). Our objective was to analyze brackish environment use by the streaked prochilod captured from Paraná and Uruguay rivers. To accomplish this, lapillus otolith sections were analyzed for Sr:Ca with laser ablation-inductively coup
Neotrop. ichthyol.. Publicado em: 17/08/2017
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12. REDESCRIPCIÓN DE POTAMOLITHUS SUPERSULCATUS PILSBRY, 1896 (GASTROPODA, TATEIDAE) DEL SUR DE LA CUENCA DEL PLATA
ABSTRACT The genus Potamolithus Pilsbry, 1896 (Gastropoda; Tateidae), has 31 species, 22 of which are distributed in Argentina in Del Plata basin, defining the Uruguay River and the Río de la Plata as a “hotspot” of diversity in freshwater gastropods. However, most of its species has been described only by conchology characters and a few has anatomical
Pap. Avulsos Zool.. Publicado em: 2017