DISCUSSION of FORAGING ACTIVITY OF THE EUROPEAN HONEY BEE, APIS MELLIFERA L. ON LITCHI FLOWER IN DIFFERENT HOURS OF THE DAY

DISCUSSION

It was monitored for the foraging activity of A. mellifera commenced its foraging activity earlier in the morning. Then in the noon the foraging activity is comparatively low than the morning. Again in afternoon the foraging activity increase than the noon but comparatively low than the morning. At the end of the day the forage rate comparatively minimum in a day. The effect of various climatic conditions was also examined during the study period. Climatic conditions strongly affect the foraging activity of pollinating insects. In my study time a storm night had been occurred. After that night the forage rate of bees significantly change. Because of lack of nectar. Little or no flight activity occurs at or below 10°C (50 F). On clear and sunny days some flight was seen at temperatures of 12-15°C (53.6- 59 F). Flight begins in earnest at 16°C (60.8 F) and the numbers of bees taking foraging trips increases as the temperature continues to rise. Above 20°C (68 F) it tends to reach a relatively constant high level. At low temperatures (below 20-220C), wind, rain and low light intensity reduce the flight activity of bees. At low temperatures fewer bees are observed and most bees forage nearby to the hives (out to a distance of 50 meters), (Morgan et al., 2002).The wind speed should be less than 15 mph. Relative humidity has less effect on the flight activities of Apis mellifera species. However, combination of temperature and humidity is most important in the ripening of the anthers of the flowers and the availability of pollen to visiting insects. Therefore low temperatures and high humidity have the double effect of reducing bee activity and slowing the release of pollen

Leave a Reply

Your email address will not be published. Required fields are marked *