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Showing 1 to 8 of 8 for “"Cyprinodontidae"”.
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Chromosomal complements and variation in some Venezuelan annual killifishes (cyprinodontidae)
Karyotypes of nine species of Venezuelan annual killifishes were compared. Karyotypic differences were found between species and between some genera. A chromosomal sexual dimorphism was found in <u>Pterolebias hoignei</u> (2N = 46). Males of this species possess a single large "Y" chromosome. No …
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Phylogeographic structure of the Atlantic pupfish, Cyprinodon variegatus (Cyprinodontidae), along the eastern coast of North America: Evidence from mitochondrial nucleotide sequences
Cyprinodon variegatus is a pupfish that inhabits the Atlantic coast of North America, nearly continuously, from Massachusetts to Belize. This research attempts to resolve the phlylogeography of C. variegatus by investigating the genetic sequence structure of the mitochondrial control region …
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The phylogenetic affinities of Crenichthys and Empetrichthys using mtDna
… of Nevada. Of five families proposed, three, Cyprinodontidae, Goodeidae, and Empetrichthyidae, are still under consideration. The Goodeidae, fishes endemic to the Mexican Plateau, are viviparous, whereas Crenichthys and Empetrichthys are oviparous. Approximately 300 base pairs of the …
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Molecular drive and population differentiation of satellite DNAs in Cyprinodon variegatus
… minnow, <u>Cyprinodon variecratus</u> (cyprinodontidae) contains at least two highly repetitive satellite DNA sequences. The major satellite sequence is present at roughly 10<sup>6</sup> copies per haploid genome. The basic repeating unit averages 170 bp in length, tandemly arranged, and …
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Relationships Among Swimming Ability, Habitat use, and Morphology of Freshwater Fishes from Texas and Louisiana
… 40 cm·s-1 for Percidae, 31 to 43 cm·s1 for Cyprinodontidae (N= 2), 30 cm·s-1 for Atherinidae (N=l), 16 to 19 cm·s-1 for Poeciliidae (N= 2), and 23 to 41 cm·s·1 for Centrarchidae (N= 4). Mean relative (bl·s-1) speeds ranged from 3.4 to 19.6 bl·s-1 for Cyprinidae, 12.6 bl·s-1 for Characidae, …
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Population Genetics of Death Valley Pupfishes (Cyprinodontidae:Cyprinodon Spp.) and the Identification of a New Retrotransposable Element Family
… evolutionary histories of pupfish populations (Cyprinodontidae: Cyprinodon spp.) from the remnant aquatic habitats of Death Valley was approached by exploring the genetic structure and divergence within and among populations using mitochondrial and nuclear DNA markers. The findings of these …
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Assessing the current status of local floodplain fisheries in the Okavango river, Kavango region, Namibia
… less common families included the Schilbedae and Cyprinodontidae families which combined made up less than 17% of the caches for the group. The species were ranked based on percentage index of relative importance (%IRI). The five most important fish species accounted for 96% (total IRI) when …
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A method of detecting reaction to environmental influence by recording circadian activity, using the flagfish Jordanella floridae
<p>This paper investigates a means of detecting the reaction of aquatic vertebrates to environmental change by recording behavioral patterns within the diurnal activity. An apparatus measuring the activity of Jordanella floridae, Goode and Bean, using a photoelectric sensor system is described. …