This research report on two different strains of Apis cerana is worth reasing and provides the difference by charts.

http://www.idosi.org/wasj/wasj7(6)/16.pdf
World Applied Sciences Journal 7 (6): 797-801, 2009
ISSN 1818-4952
IDOSI Publications, 2009
Corresponding Author: Dr.Y.L. Ramachandra, Department of P.G. Studies and Research in Biotechnology,
Kuvempu University, Shankaraghatta-577 451, Karnataka, India
797
Studies on Behavioural Traits of Two Different Strains of
Indian Honey Bee Apis cerana Indica F.
S.D. Shruthi, Y.L. Ramachandra and P.S. Sujan Ganapathy
Department of P.G. Studies and Research in Biotechnology, Kuvempu University,
Shankaraghatta-577 451, Karnataka, India
Abstract: Productive efficiency of the apicultural industry depends upon improvements in bee breed,
bee management and bee forage. The behavioural traits such as pollen carrying capacity, pollen and
honey stores and colony population were compared for black and yellow strains of Indian honey bee
Apis. cerana indica F. Observations of honey bees showing maximum activity support the conjecture that
pollen foragers carry relatively little fluid during the hottest periods and pollen foraging decreased at high
ambient temperatures. The notable difference in the activity between the species may occur due to availability
of pollen source, variation in genetic character, preference for pollen, foraging efficiency, foraging distance and
competition for pollen. The mean pollen carrying capacity of foraging bees at different times of the day in the
study period and mean pollen stores and honey stores of foraging bees at all seasons of the study period and
also population count in a colony acts as a parameter for comparison of black and yellow strains. The final
outcome of the study interprets that black strain has higher pollen carrying capacity, maximum area under pollen
and honey stores and relatively high population when compared with the yellow strain.
Key words: Black and Yellow strains, Pollen carrying capacity, Pollen and honey stores, Bee population
INTRODUCTION the tetraploid [2]. The interpretations of the evolution of
Honey bees are the prime pollinators; they are analysis and paleogeography [3].

Regards,
Ernie