Yu. Ph. Kartavtsev

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Algorithms of nucleotide diversity measures and other measures of genetic divergence at the molecular level are analyzed. Based on a database of p-distances, we have compared genetic divergence of populations (1) and taxa of different rank, such as sibling species (2), species within a genus (3), and species from different genera within a family (4). Based(More)
The seaslug Janolus fuscus of the family Proctonotidae, which is new to the Russian fauna, was found in the Sea of Japan for the first time. A small population of this mollusk was found at the northwestern coast on a bank occupying approximately 3000 m2 of the sea bottom south of Rudnaya Bay. Data on the distribution, ecology, radula morphology, and feeding(More)
Seventeen nucleotide sequences of Co-1 gene from 13 Pleuronectiformes species and 2 Perciformes species served as the outgroup were examined. For divergence comparison, the initial stage involved calculation of pairwise p-distances for all investigated sequences. This allowed to evaluate the nucleotide diversity on four phylogenetically different levels:(More)
Cytochrome b (Cyt-b) gene was sequenced for six flatfish species and compared with seven other species belonging to Pleuronectiformes. Monophyly of the family Pleuronectidae representatives was fine supported by bootstrap or other means in several sequence-based trees on Cyt-b gene data. Results revealed that synonymy must be accepted for Hippoglossoides(More)
This paper examines the genetic variability of the Pacific mussel Mytilus trossulus and an introduced Atlantic species, M. galloprovincialis, in the northwestern Sea of Japan (Peter the Great Bay and Kievka Bay). The genotyping of individuals from eight populations was carried out using eight polymorphic enzyme loci and two nuclear DNA markers (Me-5 and(More)
In the Pacific herring, Clupea pallasii, eight samples of spawning, mature fish (collected in 1978 and 1981) and six samples of immature fish individuals (collected in 1979, 1980 and 1984) were analyzed. Mature fish were analyzed by 24 conventional morphometric characters or morphometric indices. By means of discriminant and factor analyses (principal(More)
Molecular genetic analysis of Altai osmans of the genus Oreoleuciscus from two different parts of the range was carried out. In this study, based on the mitochondrial Co-1 gene sequence, a total of 25 fish specimens belonging to four genera were examined: (1) O. humilis, 2 specimens; O. potanini, 13 specimens; (2) Pseudaspius leptocephalus, 1 specimen; (3)(More)
A total of 95 nucleotide sequences of a Co-1 gene fragment of approximately 650 bp were analyzed for fishes of the orders Perciformes and Scorpaeniformes (outgroup). Gene trees based on four algorithms (BA, NJ, MP, and ML) were similar in topology of solved branches. An emphasis was placed on the species and generic levels, but a significant phylogenetic(More)
Samples of seven Sisorid catfish species of the genus Glyptothorax (G. garhwali, G. dakpathari, G. brevipinnis, G. ngapang, G. granulus, G. ventrolineatus, and G. davissinghi) were collected from the Himalayan region and the Western Ghats of India. They were analyzed for the mitochondrial cytochrome b gene (Cyt b). Out of 1152 nucleotide positions analyzed,(More)
The dependence of the expression of genotypic values (Y) on gene dosage (X) have been analyzed for four types of intralocus interactions (additivity, dominance, overdominance, and neutrality) using a linear model. Artificial numerical examples have been used to demonstrate that X and Y are positively associated with each other in the cases of additivity,(More)