Results 1 to 10 of about 35 (33)

The unique karyotype of Henochilus wheatlandii, a critically endangered fish living in a fast-developing region in Minas Gerais State, Brazil. [PDF]

open access: yesPLoS ONE, 2012
Henochilus wheatlandii, the only species of this genus, is critically endangered and was considered extinct for over a century. The rediscovery of this fish in 1996 made it possible to study its phylogenetic relationships with other species in the ...
Priscilla C Silva   +5 more
doaj   +2 more sources

Cytogenetic and Molecular Data Demonstrate that the Bryconinae (Ostariophysi, Bryconidae) Species from Southeastern Brazil Form a Phylogenetic and Phylogeographic Unit. [PDF]

open access: yesPLoS ONE, 2015
Brycon spp. occur in Neotropical watersheds to the west and east of the Andes, and as they are sensitive to anthropogenic changes, many these species are endangered in southeastern Brazil.
Natália Martins Travenzoli   +5 more
doaj   +2 more sources

Comparative study on hematological parameters of farmed matrinxã, Brycon amazonicus Spix and Agassiz, 1829 (Characidae: Bryconinae) with others Bryconinae species Estudo comparativo sobre parâmetros hematológicos de matrinxã Brycon amazonicus Spix e Agassiz, 1892(Characidae: Bryconinae) criados em cativeiro, com outras espécies de Bryconinae

open access: yesActa Amazonica, 2008
The aim of this study was not only to determine the red blood cells parameters, thrombocyte and leukocyte counts in farmed Brycon amazonicus (matrinxã), to compare these parameters among Bryconinae species from literature, and also to investigate the ...
Marcos Tavares-Dias   +4 more
doaj   +1 more source

Heterochromatin patterns and karyotype relationships within and between the genera Brycon and Salminus (Pisces, Characidae)

open access: yesGenetics and Molecular Biology, 1999
Chromosomes of two Brycon species (B. lundii and B. microlepis) and Salminus hilarii were analyzed. Based on constitutive heterochromatin distribution patterns, karyotypic relationships within and between Bryconinae and Salmininae were examined.
Vladimir Pavan Margarido   +1 more
doaj   +1 more source

Endoparasite fauna of Brycon amazonicus and B. melanopterus(Characidae, Bryconinae) from Negro and Solimões rivers, Amazon, Brazil [PDF]

open access: yesActa Amazonica, 2016
Congeneric host species present similar biological and behavioral aspects, what may favor the presence of a similar parasite fauna. The aim of the present study was to compare the composition and structure of the parasite community from congeneric ...
Thamy Santos RIBEIRO   +3 more
doaj   +1 more source

A phylogenetic analysis of Brycon and Henochilus (Characiformes, Characidae, Bryconinae) based on the mitochondrial gene 16S rRNA

open access: yesGenetics and Molecular Biology, 2008
The genus Brycon, the largest subunit of the Bryconinae, has 42 valid species distributed from southern Mexico to the La Plata River in Argentina. Henochilus is a monotypic genus, comprising a single species (H.
Silva Hilsdorf   +3 more
doaj   +1 more source

Restriction site heteroplasmy in the mitochondrial DNA of Brycon opalinus (Cuvier, 1819) (Characiformes, Characidae, Bryconiae)

open access: yesBrazilian Journal of Medical and Biological Research, 2004
Homoplasmy is a feature usually found in the mtDNA of higher animal taxa. On the other hand, the presence of two classes of mtDNA in the same cell or organism is rare and may appear in length or site variation.
A.W.S. Hilsdorf, J.E. Krieger
doaj   +1 more source

Morphological and behavioral development of the piracanjuba larvae Desenvolvimento morfológico e comportamental de larvas de piracanjuba

open access: yesRevista Brasileira de Zootecnia, 2010
The objective of this work was to study the morphologic development and the swimming and feeding behaviors of piracanjuba larvae, Brycon orbignyanus Valenciennes (1849) (Characiformes, Characidae, Bryconinae), during the period from zero to 172 hours ...
Cláudia Maria Reis Raposo Maciel   +5 more
doaj   +1 more source

Metazoan endoparasites of Brycon orbignyanus (Characidae: Bryconinae) in a neotropical floodplain

open access: yesActa Scientiarum: Biological Sciences, 2019
Species richness and composition are central themes in community ecology of helminths because they improve the understanding of factors that determine community structure.
Eliane da Silva Fernandes   +2 more
doaj   +1 more source

Parasitos nas brânquias de Brycon amazonicus (Characidae, Bryconinae) cultivados em canais de igarapé do Turumã-Mirim, Estado do Amazonas, Brasil - DOI: 10.4025/actascibiolsci.v29i2.593

open access: yesActa Scientiarum: Biological Sciences, 2007
O presente estudo teve como objetivo determinar a prevalência e a intensidade de parasitos nas brânquias, bem como o fator de condição em matrinxã Brycon amazonicus Spix e Agassiz (1829) cultivados em três canais de igarapé da região do Tarumã-Mirim ...
Jefferson Raphael Gonzaga Lemos   +4 more
doaj   +1 more source

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