Abstract

Though studies associated with the geographic distribution of Drosophilidae in India have taken rapid strides in last few years, only a cursory survey has been undertaken in certain areas, whereas a vast area of the Indian subcontinent still awaits exploration. In view of this, an attempt has been made to record the Drosophilid fauna of Jnanabharathi habitat, which is a completely virgin field, to explore with a view to furnish a spatio-temporal distribution pattern of Drosophilid species. The present study has revealed that species diversity has enriched in undisturbed region where human habitat is poor. On the other hand, the diversity and distribution of the Drosophilids have been affected enormously where human habitat is frequently sensed. In addition to this seasonally related environmental factors have a direct or indirect effect on the population density and distribution pattern of Drosophila in space and time.

Key words: Drosophila fauna, biodiversity, distribution pattern, spatial, temperature.