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Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
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Your Position :Home->Past Journals Catalog->2020年57 No.5

Processing time of three kinds of bee pollen in the digestive tract of Apis mellifera L.
Author of the article:WANG Ying;MA Lan-Ting;LIU Zhen-Guo;WANG Hong-Fang;XU Bao-Hua
Author's Workplace:Department of Science and Technology, Shandong Agricultural University, Tai’an 271000, China; College of Animal Science and Technology, Shandong Agricultural University, Tai’an 271000, China
Key Words:Apis mellifera L.; bee pollen; digestive tract; emptying time
Abstract:
[Objectives]  To determine the processing time of Camellia pollen, rape pollen and corn pollen, in the bee digestive tract. [Methods]  Honeybees were fed either Camellia pollen, rape pollen or corn pollen, containing a Cr2O3 marker. Three, six and nine day old honeybees were prevented from feeding for 0, 24, 48 and 72 h, respectively, after which their digestive tracts were dissected for examination. The emptying rate of the digestive tract, food intake and the length of the midgut, ileum and rectum of each treatment group was compared. [Results]  With the exception of 3-day-old bees fasted for 24 hours, 6-day-old bees fasted for 0 and 24 hours, and 9-day-old bees fasted for 48 hours, there were significant differences in the emptying rate of the digestive tract among the treatment groups (P < 0.05). The digestive tracts of all treatment groups were completely empty after fasting for 72 h. Although the total consumption of corn pollen was significantly lower than that of Camellia and rape pollen (P < 0.05), there was no significant difference in the total food intake of each treatment group at the end of the experiment (P > 0.05). There was also no significant difference in the length of the midgut and rectum of the different age groups, and the influence of diet on ileum length was small. [Conclusion]  The digestive tract of honeybees < 9 days old empties within 72 h, irrespective of the kind of bee pollen ingested.
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