Bottle brush Callistemon lanceolatus DC (Myrtaceae) nectar: amount, type of nectar sugars and honeybee foragingJ.K. Guptaa and J. Kumarb
a Department of Entomology, Dr YS Parmar University of Horticulture and Forestry Nauni, Solan -173 230, India
b RRS, HPKV, Bajaura, Kullu, (HP) India
Abstract - The maximum amount of nectar sugars in the flowers of bottle brush, Callistemon lanceolatus, protected from nectarivores was 6.044 mg/flower 72 h after flower opening, whereas the 24-h sugar value was only 0.44 mg. Apis mellifera harvested ≈ 90% of the sugar produced by the flowers. The concentration of solutes in the nectar ranged between 25 and 40%. Only fructose and glucose were found to be present in the nectar. A mellifera visited 9.5 flowers/min to collect nectar.
Key words: Apis mellifera / Callistemon lanceolatus / nectar secretion / foraging behaviour