نتایج جستجو برای: cypriniformes
تعداد نتایج: 498 فیلتر نتایج به سال:
Fish of the superfamily Cobitoidea sensu stricto (namely loaches) exhibit extremely high diversity of color patterns, but so far little is known about their evolutionary mechanism. Melanocortin 1 receptor gene (MC1R) plays an important role during the synthesis of melanin and formation of animal body color patterns. In this study, we amplified and sequenced the partial MC1R gene for 44 loach in...
Specimens of three little-known species of Rhabdochona (Nematoda: Rhabdochonidae) were collected during occasional examinations of some freshwater fishes in India: R. (Rhabdochona) hellichi turkestanica (Skryabin, 1917) in Schizothorax sp. (Cyprinidae, Cypriniformes) from the Lodhomakhola and Rangit Rivers, West Bengal and Sikkim, respectively; R. (R.) hospeti Thapar, 1950 in Tor sp. (Cyprinida...
Genus Scardinius (Cypriniformes, Actinopteri) belongs to the family Leuciscidae, subfamily Leuciscinae, and it includes 10 species. Phylogenetic morphometric research conducted so far have shown a great taxonomic complexity within this genus. Therefore, aim of was determine morphological diversity contribute clarification relationships status S. dergle plotizza. For purpose specimens plotizza w...
The fathead minnow (Pimephales promelas) is a nest-building North American cyprinid that spawns multiply and exhibits exclusive male parental care. Here, we examined the effects of nest substrate availability on the genetic mating system in 2 natural populations from the glacial pothole region of eastern South Dakota. The sites differed dramatically with respect to the type and density of avail...
The evolutionary relationships of species of Danio and the monophyly and phylogenetic placement of the genus within the family Cyprinidae and subfamily Rasborinae provide fundamentally important phyloinformatics necessary for direct evaluations of an array of pertinent questions in modern comparative biology. Although the genus Danio is not one of the most diverse within the family, Danio rerio...
Species of the nemacheilid genus Homatula are endemic to the Yunnan-Guizhou Plateau of China. Herein we provide phylogenetic inferences of species relationships based on complete sequences of the mitochondrial cytochrome b gene (cyt b) and partial sequences of the nuclear recombination activation gene (RAG 1). Both gene trees (and the concatenated data set) support the recognition of five clade...
Schizothorax curvifrons is a morphometrically and meristically most variable and economically valuable promising fish food from Kashmir Valley. Since there is a lack of information on stock structure of wild populations on this species, this study was aimed to investigate the intraspecific variation of this important snowtrout. For this, two rivers and one lake in Kashmir Himalaya were sampled ...
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