• G Sreerama Reddy

      Articles written in Proceedings – Animal Sciences

    • Drosophila fauna of Sahyadri Hills (Western Ghats) with description of a new species

      H S Prakash G Sreerama Reddy

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      Drosophila collections of Sahyadri Hill range revealed the occurrence of several known species ofDrosophila in addition to a new species,Drosophila sahyadrii, a member of thesuzukii subgroup of themelanogaster species group of the subgenusSophophora. The distributional pattern of different species is closely related to the nature of the environmental conditions of the localities. The morphology and internal characters of the new species are described. The systematic position and the affinities are discussed.

    • Seasonality and population fluctuations in theDrosophila of Western Ghats

      H S Prakash G Sreerama Reddy

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      Population fluctuations of various species ofDrosophila in the 5 localities of Bababudangiri and Kemmangundi Hill ranges (Western Ghats) were analysed with reference to the seasons of the year. The radical changes in the environmental factors caused by the alterations of seasons were found to influence greatly the size ofDrosophila populations. The quantitative differences in the monthly collections ofDrosophila species such asD. giriensis, D. takahashii, D. mysorensis, D. nasuta andD. immigrans were found to be closely related to the climatic variations. The differential magnitude of the population peaks and their asynchronous formation by different species as observed in the present study were found to be a reflection of differential responses of these species to the ambient and changing ecological factors. The cyclical changes in the size ofDrosophila populations under study appears to be regulated by the seasonal rainfall and the related changes in the environment (extrinsic factors) coupled with genetic and physiological factors (intrinsic factors) generated within the populations.

    • Drosophila fauna of Nagarhole, South India, including description of a new species (Diptera: Drosophilidae)

      H S Prakash G Sreerama Reddy

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      Drosophila collections made using traps baited with fermenting bananas from Nagarhole (Western Ghats) yielded a total of 15 species including a new species,Drosophila nagarholensis. Majority of theDrosophila trapped belonged either to themelanogaster orimmigrans species groups of the subgeneraSophophora andDrosophila respectively. The sympatric association and ecological dominance of the members of the two species groups are discussed. The external morphology and internal structures of the new species are described. Its taxonomic status and relationships are presented.

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