Subject of research: Aphidofauna in Akhangaran valley.
Purpose of work: Research on Aphidofaunas in Akhangaran valley and the basic directions of transformation.
Methods of research: cntomologic, aphidologic, ccologic and statistical methods were applied in the dissertation.
The results obtained and their novelty: Aphidofauna (Homoptera, Aphidinea) in Akhangaran valley were for the first time studied in the work. There have been revealed 227 types and 3 subspecies belonging to 75 sorts and 6 families, these 3 types (Brachyunguis azimovi Akhmedov et Tashmatova, 2005, Brachyunguis uzbekistanicus Akhmedov et Tashmatova, 2004, Dysaphis ertoshica Akhmedov et Tashmatova, 2005, Acyrthosiphon scariolae kuraminensis Akhmedov et Tashmatova, 2005) and one of the subspecies (Acyrthosiphon scariolae kuraminensis Akhmedov et Tashmatova 2005) has been identified as a new to science, Myzus langei Borner, 1933 as a newfound fauna of the Central Asia, Uroleucon jaceae reticulatum (Hille Ris Lambers, 1939) as a newfound aphidofauna of Uzbekistan and for the first time 147 kinds and a subspecies have been registered in the valley. On typological structure aphidocomplcxes arc subdivided into 27 associations, 15 formations and 10 types. The basic directions of transformation of aphidofaunas and aphidocomplcxes, the linear connection between kinds of indicators and sub indicators in aphidocomlcxes have been proved. The conditions of primary and reformed aphidocomlcx, infringements of borders of ecological niches under the influence of the anthropogenous pressure have been identified. On the basis of coefficient of association reliability of infringement and division of ecological niches has been proved. The criterion of predictability of contamination and assessment of desertification has been expressed.
Practical value: the practical aspect of the dissertation is to use obtained results for solution of the problem of prognostication of mass reproduction of widespread and harmful kinds, to develop science-based measures of struggle against them, to determine the basic directions of transformation of entomofaunas, to predict and value conditions of desertification, and preservations of biological varieties.
Degree of embed and economic effectivity: results of research work arc applied for forecasting course of ctnomofauna transformation and conditions of desertification.
Field of application: nature and wildlife preservation, protection of plants, formation and scientific researches.
