The upper Paraná basin
Ecology of Phallotorynus pankalos (Cyprinodontiformes: Poeciliidae) in a first-order stream of the upper Paraná Basin
... of the Paraíba do Sul, Paraná and Paraguay rivers. The species of this genus are poorly studied from the ecological ...River Basin (Lucinda et ...
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Genetic divergence between Pseudoplatystoma corruscans and
... in the flood- plain of the Upper Paraná River Basin (Luz et ...In the Cuiabá River Basin, where the two species occur in sympatry, a ...(2005). The ...
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Chromosomal evidence of population subdivision in the freshwater fish Leporinus elongatus in the Upper Paraná River basin
... from the Mogi- Guaçú River sampled in the municipality of Pirassununga (SP) and 53 (43 males and 10 females) from the Para- napanema River collected near the municipality of Ouri- nhos (SP), ...
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Population aspects of Bryconamericus stramineus in streams of the upper Paraná River basin, Brazil
... Among the various families of fishes found in the upper Parana River, Characidae is the most diverse among the Characiformes, in which the genre Bryconamericus included on ...
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Variação cariotípica de Astyanax bimaculatus (Linnaeus, 1758) (Pisces: Characidae) nas bacias costeiras do Brasil
... was the first to indicate unambiguous karyotypic differences among populations of this species ...from the São Francisco basin and for ...from the Paraguai basin. The same ...
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B iological L imnolog y
... eliminate the oocytes during the spawning season (group 2). The presence of a single mode in the distribution of oocytes diameter suggests a total ...spawning. The high value of ...
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Crenicichla ypo (Teleostei: Cichlidae), a new species from the middle Paraná basin in Misiones, Argentina
... from the Arroyo Urugua-í, a left-hand tributary of the middle Paraná River, Misiones province, ...Argentina. The new species is recognized by 6 to 8 irregular blotches along the ...
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Evidence of the color pattern variation in populations of Gymnotus pantanal (Gymnotiformes) from three streams in the upper Paraná River basin, Brazil
... in the streams Jacutinga and Pinheirinho, and only the typical color pattern in the stream ...studied the effects of limnological and morphometric variables on the composition and ...
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The Botrychiopsis genus and its biostratigraphic implications in Southern Paraná Basin
... as the pinnule limbus presents decurrent ...in the Mojón de Hierro Formation (Upper Paleozoic Tepuel Group), Arroyo Garrido area (Chubut Province of ...in the Santa Marta Farm (Itapeva region ...
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The fish fauna of the Jacaré-Guaçu River basin, Upper Paraná River basin
... to the native fish fauna (Rodríguez 2001). An example of the impact caused by the introduction of alien species is the absence of Serrasalmus maculatus, the only native representative ...
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Allozyme variation among three populations of the armored catfish Hypostomus regani (Ihering, 1905) (Siluriformes, Loricariidae)
... of the armored catfish genus Hypostomus (Siluriformes, Loricariidae) feed mainly on rock bottoms by scraping the substratum (Delariva and Agostinho, 2001) and present the characteristics of benthonic ...
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Genetic variability of Hypostomus (Teleostei, Loricariidae) from the Ribeirão Maringá, a stream of the upper Rio Paraná basin, Brazil
... alleles. The loci Acp-A, Gcdh-A and sMdhp-A were diagnostic for the three populations and can be elected as good genetic markers for a rapid discrimination among ...Furthermore, the al- leles ...
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Genetic variability in Astyanax altiparanae Garutti Britski, 2000 (Teleostei, Characidae) from the Upper Paraná River basin, Brazil
... of the large populations the high genetic variability of ...to the accumulation of neutral or quasi-neutral mutations (Kimura and Ohta, ...reported the same diploid number (2n = 50) but ...
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Jislaine Cristina da Silva 1,3 , Éder André Gubiani2 Rosilene Luciana Delariva1
... of the Branca Waterfall is characterized by slower water flow, wider channel and more extensive stretches with native riparian vegetation compared to the downstream ...portion. The downstream stretch ...
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The ichthyofauna of drifting macrophyte mats in the Ivinhema River, upper Paraná River basin, Brazil
... in the Solimões River, Central Amazon (average of 36 individuals/mat and 5 ...for the few studies available dealing with this subject, some of which were mentioned by Henderson & Hamilton ...Moreover, ...
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A new species of Bryconamericus (Characidae: Stevardiinae: Diapomini) from the upper rio Paraná basin, Brazil
... surface, upper jaw components, orbital margin of infraorbitals and opercular apparatus, due to higher concentration of dark ...caudal-fin upper lobe darker than lateral of body due to higher concentration ...
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Genetic structuring of Salminus hilarii Valenciennes, 1850 (Teleostei: Characiformes) in the rio Paraná basin as revealed by microsatellite and mitochondrial DNA markers
... as the Pantanal in the State of Mato Grosso, Brazil, may be under the influence of hydrological factors, such as seasonal flood pulses, that genetically homogenize populations, thereby bringing them ...
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Reproductive strategies of two Curimatidae species in a Mogi Guaçu impoundment, upper Paraná River basin, São Paulo, Brazil
... In the studied area, the body condition of ...use the environmental resources in a similar way. The body condition differences between dry and wet seasons for both species corresponded to ...
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Effects of a small natural barrier on the spatial distribution of the fish assemblage in the Verde River, Upper Paraná River Basin, Brazil
... determining the distribution and composition of fish assemblages (Matthews, 1998; Jackson et ...in the present study we observed a weak correlation between selected environmental variables and geographical ...
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Life-history traits of Farlowella hahni (Siluriformes, Loricariidae) in streams of the Ivinhema River Basin, Upper Paraná Basin
... with the members of the predominant sex transmitting their genes with lower frequency to the next ...in the process of colonization. The predominance of females has been reported for ...
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