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Altitudinal species variation in Drosophilids of Canary Hill, Hazaribag, Jharkhand, India

Shakti Pada Mahato, Kishore Kumar Gupta* & Avinash Kumar Soni
Cytogenetic Laboratory, Department of Zoology, Vinoba Bhave University, Hazaribag, Jharkhand, India

Received : 14th May, 2022 ; Revised : 13th June, 2022

Abstract– India possesses diversified physio-geographical and topological conditions which affect the geographical distribution of animals including Drosophila with reference to variation in elevation, latitude and longitude of geographical areas. To explore the species richness of family Drosophilidae in relation to altitudinal changes, a survey conducted at Canary hill of Hazaribag reveals a collection of 754 species of Drosophila representing two genera (Genus Drosophila & Zaprionus) of family Drosophilidae. Also, the survey conducted at two different elevations of Canary Hill reveals the detection of ten different species along with remarkable variation in species distribution as indicated by species diversityassessment using different indices. The study indicated decreasing trend in species diversity by showing Simpson index of 0.18, Shannon-Wiener index 1.88 and Berger – Parker index 4.11at the base of hill as compare to the diversity index at 50 meter indicating Simpson index 0.24, Shannon-Wiener index 1.66 and Berger- Parker index 2.80 respectively.

Key words: Drosophila, Altitude, Diversity indices, Canary hill

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