Honeybee Visiting and Secreted Nectar Characteristics of Tilia insularis Nakai and Relation with Meteorologic Traits
2013
Kim, M.S., Korea Forest Research Institute, Suwon, Republic of Korea | Kim, S.H. | Song, J.H., Korea Forest Research Institute, Suwon, Republic of Korea | Kim, H.S., Korea Forest Research Institute, Suwon, Republic of Korea
This study was conducted to provide a basic data such as honeybee visiting and secreted nectar for possibility of development as honey plant, Tilia insularis Nakai in Suwon. The surveyed tree's flowers bloom and secrete nectar during 7 days in 2012. One of the flowers secretes and absorbs nectar, which lasted for 2 days. Apis mellifera and Bombus ignitus visited flowers in priority, number of visited pollinator per flowering lateral bunch can be assumed 160 honeybees and 46 carpenter bees for a day. Honeybee visiting was concentrated at around 3 pm. On average, volume of total and dry nectar secreted by nectary were 12.0±4.5μl and 1.0±0.4μl from one flower, respectively. As results of correlation analysis between the meteorological traits and surveyed data, we found that honeybees activity was influenced by air temperature and relative humidity. Volume of total nectar was influenced by mostly meteorological traits and volume of dry nectar was less influenced by air temperature and relative humidity, respectively. To select honey plant or individual tree, volume of dry nectar must be major judgement factor on breeding because it was less influenced by meteorological traits than volume of total nectar. Finally, the surveyed T. insularis is considered as possible honey plant because of its nectar volume and honeybee visiting. Honey is made of nectar sugar as well as by digestive system of honeybee, therefore a more associated study is necessary to analyze free sugar component in nectar and accurately presume to harvest honey quantity.
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