Studies on the predatory interference to natural populations of Apis dorsata (hymenoptera: Apidae) at differnent Regions of South-Western Karnataka, India

Raghunandan, K. S. and Basavarajappa, S. (2015) Studies on the predatory interference to natural populations of Apis dorsata (hymenoptera: Apidae) at differnent Regions of South-Western Karnataka, India. International Journal of Research and Scientific Innovation, 2 (5). pp. 1-8. ISSN 2321-2705

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Abstract

Field investigations were conducted by employing direct visual count method and an all out search method to record the impact of predators to A. dorsata colonies at arid, semi-arid and malnad regions of south-western Karnataka during 2010 to 2012. Moreover, farmers, residents and common public were met personally to collect information about predators of A. dorsata population with the help of pre-tested questionnaire. Total 27 visits were made to record the prevalence of predators on A. dorsata colonies. Altogether 11 species which belong to insects (one species), birds (8 species) and mammals (2 species) have shown their predatory activity on A. dorsata colonies. Analysis of Variance between predator’s interference and different regions of south-western Karnataka didn’t showed significant variation. This has demonstrated the common prevalence of predators at A. dorsata colonies in south-western Karnataka. Further, Pearson’s correlation between predator’s interference and colony abandonment indicated the positive correlation. Thus, certain insects, birds and mammals became troublesome to A. dorsata population. They stealed the brood and hive products, hunted worker bees, thereby weakened the colony integrity and gradually initiated the process of colony desertification. Despite, elite strategies adopted while nesting under arboreal conditions by A. dorsata, loose its population considerably. Since, A. dorsata become a part of diet for several animals, its protection is need of the hour as it is one of the keystone pollinators, conservation is essential to restore local biodiversity.

Item Type: Article
Subjects: B Life Science > Zoology
Divisions: Department of > Zoology
Depositing User: LA manjunath user
Date Deposited: 22 Oct 2019 06:26
Last Modified: 22 Oct 2019 06:26
URI: http://eprints.uni-mysore.ac.in/id/eprint/9408

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