Results 81 to 90 of about 1,823 (231)
Revista da Sociedade Brasileira de Medicina TropicalINTRODUCTION Freshwater stingray envenomations are an important cause of morbidity in riverine populations living in various regions of Brazil. The sequelae include temporary or permanent disability.
Paulo Afonso Martins Abati +7 more
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Acta Scientiarum: Biological Sciences, 2006 As raias Potamotrygon falkneri e Potamotrygon motoro foram avaliadas em relação à composição de suas dietas e a sobreposição do nicho trófico nos períodos de seca (agosto/2004) e cheia (janeiro/2005) na planície alagável do alto rio Paraná, em três ...
Milza Celi Fedatto Abelha +3 more
doaj
Índices parasitários da arraia cururu Potamotrygon cf. histrix da Bacia do médio Rio Negro, Amazonas, Brasil. [PDF]
, 2017 A família Potamotrygonidae é constituída por arraias de vida exclusiva em água doce, encontradas na maioria dos sistemas fluviais da América do Sul.
DIAS, M. T. +5 more
core
Revista U.D.C.A Actualidad & Divulgación Científica, 2011 A pesar de la representatividad de Potamotrygon magdalenae en Colombia, por encontrarse a lo largo de la cuenca del río Magdalena y sus afluentes, esta raya no ha sido objeto de estudios previos, desconociéndose la mayor parte de sus aspectos bio ...
Herly Bibiana Ramos-Socha +1 more
doaj
Zoologia (Curitiba), 2015 Synchronized bipedal movements of the pelvic fins provide propulsion (punting) during displacement on the substrate in batoids with benthic locomotion. In skates (Rajidae) this mechanism is mainly generated by the crural cartilages.
Akemi Shibuya +3 more
doaj +1 more source
Parâmetros sanguíneos da arraia de água doce Potamotrygon orbignyi Castelnau, 1855 (Potamotrygonidae) da Bacia do Rio Negro, Amazonas, Brasil. [PDF]
, 2017 A região Amazônica apresenta a maior diversidade de espécies de potamotrigonídeos, algumas com distribuição ampla como as arraias Paratrygon aiereba, Potamotrygon motoro e Potamotrygon orbignyi, sendo essa última encontrada nas bacias dos rios Amazonas ...
DIAS, M. T. +5 more
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Diversification and convergence following the transition from saltwater to freshwater in stingrays. [PDF]
, 2023 One of the most fundamental questions in biology is why some groups of organisms are more diverse than others. Classic hypotheses for explaining differences in diversity consider distinctions in time, place, resources, and competitors as the staging ...
Magnuson, Autumn D
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Journal of Parasitology, 2003 Extensive new collections of specimens of Rhinebothroides spp. from a wide range of Neotropical freshwater potamotrygonid stingrays in numerous localities permitted critical evaluation of the validity of the 7 nominal species in the genus. Some qualitative characters previously used in the taxonomy of this group are highly variable within and among ...
Marques, Fernando P.L. +1 more
openaire +3 more sources
Environmentally induced physiological responses that determine fish survival and distribution: a review [PDF]
, 2005 Limitation to an aqueous habitat is the most fundamental physiological constraint imposed upon fish, phrases such as 'like a fish of water', convey our acceptance of the general unsuitability of fish for terrestrial existence.
Odunze, F.C.
core
AMPLIAÇÃO DA DISTRIBUIÇÃO GEOGRÁFICA PARA Plesiotrygon nana CARVALHO E RAGNO, 2011 (ELASMOBRANCHII: POTAMOTRYGONIDAE) NO RIO TARAUACÁ, ALTO RIO JURUÁ, BRASIL [PDF]
, 2017 The recently described freshwater stingray Plesiotrygon nana Carvalho and Ragno 2011 was observed in the Rio Tarauacá, a tributary of Rio Juruá, in the Brazilian Amazon.
Duncan, Wallice Paxiuba +3 more
core +2 more sources