Abstract
Stingless bees are a type of insect that are very sensitive to the changes of their surroundings, especially to severe heat wave. A report stated that at temperature as high as 38 °C can cause death of bees especially to the pupae. Therefore, the objective of this research is to evaluate a new method in regulating the temperature in the hive. Greenroof, a type of roof which contains green vegetation and soil, was used as the cooling method in this study. Two units of MUSTAFA-hives were exposed under sunlight, one is without temperature control and another one was fitted greenroof. The temperatures inside each hive was measured at two points and was compared with the hive without temperature control. It was found that, for the hive integrated with greenroof, the average hive temperature was about 3°C and 6°C lower in the honey cassette and brood-cells compartment, respectively. Therefore, it can be concluded that the implementation of greenroof could solve the problem of stingless bee hive overheating, and the greenroof has an impressive cooling performance besides being an economic and simple solution.
Highlights
The control hive showed that, without cooling technique, the maximum temperature in the broodcell compartment could rise as high as 39.8 °C while in the honey cassette the maximum temperature was at 34.7 °C
Two hives were exposed to outdoor conditions, with one hive without cooling technique and another hive was fitted with greenroof, acted as a control hive
The broodcell compartment in both hives recorded higher temperatures compared to the honey cassette
Summary
They predate the stinging honey bee, roaming the tropical earth for over 65 million years. They are diverse and they share some similarities with Apis they are biologically distinct. Stingless bees produce less honey, and do not use water to cool their nest. Their hives usually consist of sections of broodcell area, as well as honey pot area. In tropical region, their nests are made in trees
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