FORAGING ACTIVITY OF DIFFERENT SPECIES OF POLLINATORS

FORAGING ACTIVITY OF DIFFERENT SPECIES OF POLLINATORS ON LUCERNE CROP
Chavan Vikas Tukaram*, S. Viraktamath and A. K. Karnatak
Department of Agricultural Entomology, Indian Grassland and Fodder Research Institute, Dharwad
University Agricultural Sciences, Dharwad 580 005, Karnataka
[Corresponding auothor E-mail*: vikasgchavan58@gmail.com]
Received: 21-12-2015 Accepted: 15-05-2016

Abstract: 
Foraging activity of different pollinators was made on the lucerne at Dharwad Karnataka in summer, monsoon and winter seasons during 2012-13. The activity of A. cerana, during summer season showed significantly higher in (6th standard week) was 1.42 bees/m2/5 minutes which declined to 0.86 bees by 8th standard week. In monsoon major peak activity was noticed during 29th standard week (1.60 bee) and in winter activity was noticed throughout the season with a major peak of 1.66 bees. However, foraging activity of A. florea in the beginning of summer season (6th standard week) was 0.95 bees which increases to 1.15 bees by 8th standard week. In monsoon the mean foraging activity varied from 0.85 to 1.32 bees/m2/5 min with indistinct peak during 23th week. Higher foraging activity of A. dorsata in the of summer observed during 7th standard week (1.09 bees/m2/5 minutes), In monsoon higher activity seen in 29th standard week (1.37 bees/m2/5 minutes). In winter higher peak period during 45th standard week (1.62 bees). Major peak activity of non-Apis bees was observed during 15, 16 and 17th standard weeks during summer, in monsoon peak attained during 30th standard week (1.12 bees/m2/5 minutes) and in winter activity varied from 0.71 to 1.05 bees  with peak activity during 46th week.

Keywords: pollinators, Foraging activity, A. cerana, A. florea, A. dorsata

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