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|Title: ||Diversity and foraging behaviour of pollinator fauna in mango|
|Authors: ||P, Venkata Rami Reddy|
M R, Dinesh
|Issue Date: ||2010|
|Citation: ||P. Venkata Rami Reddy, Abraham Verghese and M.R. Dinesh. 2010. Diversity and foraging behaviour of pollinator fauna in mango. National Symposium on Perspectives and Challenges of Integrated pest management for Sustainable Agriculture, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh, November 19-21.|
|Abstract: ||Mango (Mangifera indica), the king of fruits, is the pride of Indian fruits There has been a substantial growth in the acreage under mango but the productivity has not increased at the same rate. One of the factors limiting the productivity is the very low percent fruit set (<0.1%) in mango which could be attributed, besides some other factors, to defective or insufficient pollination. Hence pollinators have a significant role to play in enhancing the productivity. A variety of insects visits panicles and potential pollinators can be identified based on species abundance and foraging behaviour. Keeping this in view, studies were conducted at Indian Institute of Horticultural Research, Bangalore during 2009-10 to document the diversity of insect pollinators and assess their role in fruit setting of mango. Insect pollinator fauna was recorded on three popular varieties of mango viz., ‘Alphonso’, ‘Banganapalli’ and ‘Totapuri’. The number of pollinators on 10 panicles in each variety was recorded at 2 hour interval starting from 6 am to 6 pm. Among different species foraging on mango flowers, Apis florea was the dominant one (3.86/panicle/minute) followed by a calliphorid, Chrysomya megacephala (1.62) and a syrphid, Eristalinus arvorum (0.70) and Indian bee, A. cerana (0.44). There were no significant differences among varieties with respect to pollinators associated with them. Peak foraging hours of A. florea were between 9 am and 11am with a second peak between 3 and 4 pm while that of dipterans were between 11 am and 3pm. Mean foraging time of A. florea per floret was 5-6 seconds per floret and foraging 4.5 florets in a single visit. Syrphids were quick fliers and spent only a mean time of 2-3 seconds per floret and covered 2.5 florets per visit. Twenty panicles in each variety were bagged with a nylon mesh before flowering. There was 80 -90% reduction in the fruit set of bagged flowers. It was evident that insect pollinators played significant role in fruit setting of mango. The present study identifies Apis florea and Chrysomya megacephala as the most potential pollinators of mango.|
|Appears in Collections:||Plant Genetic Resources|
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