Abstract
Purpose: to study the species composition of groups of predatory beetles in beech forests of the lower forest belt of the Gorgan massif and their ecological features.Materials and methods. Representatives of 54 species from 12 subfamilies. Identification of the reveal species was performed using Bay-Bienko (1965), Bоhас J (1985 a, b), Coiffait, H., (1974, 1984), Lohse, G. A., (1964, 1974) determinants. Determination of dominance groups by the Stecker-Bergman method (1977), establishment of ecological and morphological groups according to Kashcheev V. A. (1982, 1985, 1999), types of life strategies according to Planck's method, Belonging to zoogeographical groups was established by the Vtorov P. P., Drozdov N. N. (2001).Research results. According to the results of the research, 556 individuals of rove beetles belonging to 28 genera were found, which are located within 12 subfamilies. The highest level of species diversity is characterized by the subfamilies Staphylininae and Tachyporinae, which are represented by 21 and 13 species, respectively. Only one dominant species was found in the structure of dominance - Tasgius (Rayacheila) bicharicus Mull., 1825, however, a high number of subrecent species is observed. The identified species are representatives of eleven ecological and morphological groups. Analysis of the trophic specialization of predatory beetles has shown a clear dominance of predators, among which there are both specialized species and polyphagous. The analysis of life strategies revealed representatives of 7 groups, and zoogeographical features - 10.Conclusions. Among the species of predatory beetles caught, there is a clear dominance of tachyporin and staphylin, which total 62.9 % The study of the dominance structure of this group showed a small proportion of mass species, and a clear redominance of recedents and subrecedents. According to the analysis of ecomorphs, there is an increase in the number of wells and cryptobionts, as well as mixotrophs, due to the significant level of ecological niches that are inherent in the analyzed type of ecosystems
Highlights
Predatory beetles (Staphylinidae, Coleoptera, Insecta) are one of the largest families of Coleoptera on our planet, distributed in all types of terrestrial ecosystems: steppes, fields, meadows, forests near ponds, there are no aquatic species among them [1]
The analysis of ecological and morphological groups provides a better understanding of the adaptations of Staphylinidae, in order to develop a wider range of ecological niches, and an understanding of the complexity of the habitat of predatory beetles
The conducted work allowed to establish that the groups of staphylinids of beech forests of the lower forest belt of the Gorgan massif are represented by individuals of 54 species belonging to 12 subfamilies
Summary
Predatory beetles (Staphylinidae, Coleoptera, Insecta) are one of the largest families of Coleoptera on our planet, distributed in all types of terrestrial ecosystems: steppes, fields, meadows, forests near ponds, there are no aquatic species among them [1]. Given the important regulatory role of Staphylinidae in ecosystems, their resistance to environmental factors [6, 7] and significant numbers in biogeocenoses, they are an important zoological and ecological group of living organisms used to monitor the environment. This aspect necessitates the study of the species diversity of predatory beetles and their ecological features at the regional level
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
