Results 101 to 110 of about 5,417 (192)
A new species of Astyanax (Characiformes: Characidae) from the rapids of the lower rio Xingu, Brazil
Neotropical IchthyologyAstyanax dnophos, new species, is described from the lower rio Xingu, Pará, Brazil. The new species is distinguished from its purported congeners by the presence of a broad longitudinal, midlateral dark stripe that extends from the snout to the caudal ...
Flávio C.T. Lima, Jansen Zuanon
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Neotropical IchthyologyIn this paper we describe a new species of Astyanax collected in the Atlantic Rainforest, in tributaries to the rio Cubatão, coastal basin of the Paraná State, Brazil. The new species presents a combination of characters that allows its allocation in the
Carlos A. M. Oliveira +2 more
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The complex origin of Astyanax cavefish [PDF]
BMC Evolutionary Biology, 2012 The loss of phenotypic characters is a common feature of evolution. Cave organisms provide excellent models for investigating the underlying patterns and processes governing the evolutionary loss of phenotypic traits. The blind Mexican cavefish, Astyanax mexicanus, represents a particularly strong model for both developmental and genetic analyses as ...
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Mercury bioaccumulation in fishes of a paddy field in Southern of Brazil
Acta Limnologica Brasiliensia, 2015 Aim: The aim of present study was to evaluate the Hg concentration in two species of fish (Astyanax sp and Corydoras paleatus) and its potential use as a biomonitor, in order to know if the use of pesticides and fertilizers in paddy can enhance the Hg ...
Vinicius Tavares Kütter +5 more
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Astyanax bimaculatus (Linnaeus 1758) Distribution Widespread Amazonia. Notes Barriga (1994), Valdiviezo-Rivera et al. (2018).
Escobar-Camacho, Daniel +4 more
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, 2006 Astyanax lineatus (Perugia): ILPLA 1487, (2) 32.9-36.5 mm SL, Metán River (tributary of Juramento River), on Route 46, road between Punta del Agua and La Costosa, Salta Province, Argentina, coll.: A. Miquelarena et al, March 1987; ILPLA 1515, (10) 50.0-74.5 mm SL, an unnamed creek before Huaico Mora Creek, on the road between Zapla and Jujuy City ...
Lucila C. Protogino +2 more
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Astyanax cocibolca, a new characid (Pisces: Ostariophysi) from Lake Nicaragua, Central America
Revista de Biología Tropical, 2008 Astyanax cocibolca, a small filter-feeding species is a new characid species endemic to Lake Nicaragua. It is distinguished from the syntopic Astyanax aeneus by its high gill raker count, slender body, upturned snout, long maxillary bones, conical outer ...
William A Bussing
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Revista Brasileira de Zootecnia, 2006 Com o objetivo de determinar os níveis de energia digestível (ED) em função do nível de proteína bruta (PB) da ração para alevinos de lambari tambiú (Astyanax bimaculatus), foram utilizados 600 peixes com 1,30 ± 0,01 g, distribuídos em 40 aquários
Jorge Luiz Vieira Cotan +5 more
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, 2010 Autapomorphies of Astyanax cf. rutilus: 1. Separation between posterior dentary teeth (147): (0> 1) more than width of these teeth. Paralleled in node 221 and in Aulixidens eugeniae and Pristella maxillaris. 2. Posterior extent of ventral process of quadrate (151): (0> 1) falling short of posterior margin of symplectic. Paralleled in the Hyphessobrycon
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