|Publication Type:||Journal Article|
|Year of Publication:||2013|
|Authors:||Subbotina, E, Maximova, YV|
|Journal:||BioClimLand (Biota, Climate, Landscapes)|
While studying the ecology of fungus gnats (Diptera, Sciaroidea) in coniferous subtaiga of Western Siberia the dynamics of flight activity within the largest by number of species and the most popular genera (Bolitophila, Mycomya, Exechia, Trichonta, Phronia, Mycetophila) was examined. Structural analysis of the taxonomic composition of fungus gnats active imago during the season has shown that early in the season representatives of the Exechia dominate, in August – Mycetophila, in mid-summer the importance of Mycomya, Phronia, Trichonta genera grows. The maximum species diversity for genera Bolitophila, Trichonta and Mycetophila is observed in the third decade of May, Exechia – in the first decade of May, Phronia - in late June. Flying with two periods of activity is characteristic of typical inhabitants of fungi fruiting bodies at the beginning and end of the season, with a mandatory gap between them not less than one month. For species growing on wood-destroying fungi mycelium an extended flying period during the season or in its first half is more typical, with a maximum in the warmest decades. Within each genus several strategies of flight activity are observed, the analysis of which makes it possible to identify five types of flight strategies of Sciaroidea:
Thus, in West Siberian coniferous subtaiga five types of fungus gnats’ flying strategy can be identified, while in the mid-taiga subzone of Karelia four types are distinguished, and in the mountain-taiga landscapes in the central part of the Kuznetsky Alatau only three types. In the Kuznetsky Alatau with its short summers and heavy rainfall, there are no species having two peaks of activity. In Karelia, with a cold and rainy summer, there is not a sharp decline in activity of adults in mid-season, which is characteristic of most species of subtaiga fungus gnats. Thus, it is shown that the strategies of flight activity of local faunas Sciaroidea reflect the characteristics of the landscape and climate conditions of a particular region.
Particularities of seasonal activity of representatives of fungus gnats (Diptera, Sciaroidea) most popular genera in subtaiga of Western Siberia