Effect of proline as a nutrient on hypopharyngeal glands during development of Apis mellifera (Hymenoptera: Apidae)
Ali Darvishzadeh | Vahid Hosseininaveh | Gholamali Nehzati, et al.
Proline is known to be an energy source for protein synthesis and appears to have a major role in insect flying metabolism. Insects can detect proline in their food and use it as an energy substrate to start flight and other high energy consuming activities. Honey bee has a feeding preference for nectars with higher concentrations of this amino acid. In this research we present evidence that L-proline can be utilized as a phagostimulant for the honeybee worker (Apis mellifera). We reported the L-proline increase hypopharyngeal glands acini diameter and syrup consumption at the experimental cage. Honeybee workers fed on 1000 ppm treatment prolin consumed 773.9±31.8 ul/bee after 18-days. It is obvious that the honeybee workers consumed 1000 ppm the more than other treatment. The feeding decreased when concentration of L-proline increased to 10000 ppm. The hypopharyngeal glands development increased gradually from honeybee workers emergence and started to decrease after 9 days old. The maximum acini diameter (0.1439±0.001 mm) was recorded in the 9th day when newly emerged bees were fed on 1000 ppm proline syrup.
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