[Differentiation of chum salmon Oncorhynchus keta Walbaum populations as revealed with microsatellite and allozyme markers: a comparison].

The character and extent of population differentiation in chum salmon Oncorhynchus keta from Sakhalin and Iturup were comparatively studied with 10 microsatellite and 12 allozyme markers. It was demonstrated with the example of allozyme polymorphism at the EstD locus that the effect of an individual locus with one major allele is capable of distorting the total picture of population differentiation. Multiallelic microsatellites were more efficient in revealing the genetic structure of chum salmon populations at the levels of differences between regional populations and between the stocks of individual rivers of the same region.

[Stability in development and variability in morphological signs in a natural population of Drosophila melanogaster: seasonal dynamics in 1999].

Seasonal dynamics of developmental stability and variability of morphological traits was examined in a natural population of Drosophila melanogaster in order to compare these two parameters as indicators of temperature stress. Morphometric (thorax length and wing length) and meristic (number of sternopelural and orbital bristles) were studied. Variability was measured as the coefficient of variation.

[The isoenzyme identification of Leishmania isolates taken from greater gerbils, sandflies and human patients in foci of zoonotic cutaneous leishmaniasis in Turkmenistan].

In 1991-1992, 230 isolates were obtained in the Tedzhen oasis and its adjacent desert areas: 172 isolates from great gerbils, 39 from P. papatasi, and 19 from human cutaneous leishmaniasis patients. All the isolates were identified by the isoenzyme polyacrylamide gel electrophoresis by 8 enzymes.

[The identification of Leishmania isolates obtained from patients and dogs with visceral leishmaniasis in the Turkmen SSR].

Using electrophoresis in polyacrylamide gel, 11 isolates have been detected by 8 enzymes (PGI, PGM, 6-PGD, MDG, G-6-PGD, ME, ALAT, ASAT) from patients with visceral leishmaniasis and dogs in the Turkmen SSR. The isolates were obtained from different areas of the republic varying in landscape and climatic conditions. The isolates were maintained by passages on golden hamsters.

[The isoenzyme identification and pathogenic characteristics of the Leishmania isolated in natural foci of cutaneous leishmaniasis in the USSR].

By 8-11 enzymes, using polyacrylamide gel electrophoresis, 378 isolates from R. opimus, 3 isolates from M. libycus, 4 isolates from P.