Pollinators provide key services to both natural and agricultural ecosystems. Agricultural productivity depends, in part on pollinator populations from adjacent semi natural habitats.The diversity and abundance of different insect visitors on sunflower (Helianthus annuus L.) were studied at Pantnagar. A total of 12 insect visitors belonging to order Hymenoptera (9), Diptera (1), Lepidoptera (1), and Coleoptera (1) were observed visiting the blossom of sunflower. The abundance (percentage of insect/m2/2min.) of Hymenopterans were maximum (86.09%) followed by the Dipterans (22.80 %) and others (3.87%). In Hymenopterans, the honeybees (Apis bees) were observed maximum (65.22 %) followed by non Apis bees (20.39 %) and the scolid wasp (1.69 %).
Abundance, Diversity, Helianthus annuus, Pollinator
De Grandi-Hoffman. G and Chambers. M. (2006). Effects of honeybee (Hymenoptera: Apidae) foraging on seed set in self-fertile sunflowers Helianthus annuus L. Environ. Entomol. 35(4): 1103-1108
Degrandi-Hoffmann, G. and Watkins, J.C. (2000). The foraging activity of honeybees Apis mellifera and non Apis bees on hybrid sunflower (Helianthus annuus)and its influence on cross-pollination and seed set. Journal Apicultural Research 39, 37-45.
Delaude, A; Tasei, J. N. and Roller, M. (1978). Pollinator insects of sunflower (Helianthus annuus L.) in France, pollination of male sterile lines of hybrid seed production. Proc. IV Int. Sym. on Pollination, Maryland, 29-40.
FAO, (1995). Pollination of cultivated plants in the tropics. Agric. Serv. Bull. no. 118, 198.
Greenleaf, S. S. and Kremen, C. (2006). Wild bees enhance honeybees’ pollination of hybrid sunflower. Proceeding of the National Academy of Science, USA, 103, 13890-13895.
Jadhav, J. A; Sreedevi, K. and Rajendra P. (2011). Insect pollinator diversity and abundance in sunflower ecosystem. Current Biotica, 5(3): 344-350
Moreti, A. C.; Silva, R. M. B; Silva, E. C. A., Alves, M. L. T. and Otsuk, I. P. (1996). Increase of sunflower (Helianthus annuus L.) seed production by pollinating insect action. Scientia Agricola 53(2/3): 280- 284.
Swaminathan, R. and Bhardwaj, S. C. (1982). Bee pollinators of sunflower and their foraging behaviour. Indian Bee Journal, 44(2): 32-34.
Torchio, P. F. (1994). The present status and future prospects of non-social bees as crop pollinators. Bee World, 75(2): 49-53.
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