• Proceedings of the Korean Society of Sericultural Science Conference
• /
• 2003.04a
• /
• pp.63-63
• /
• 2003

서양뒤영벌(Bombus terrestis)과 꿀벌(Apis melltfera)의 시설참외에서 화분 매개특성을 조사한 결과, 봉종별 방화활동에서 서양뒤영벌 일벌은 10시, 서양뒤영벌 수벌과 꿀벌은 12시에 방화활동 정점에 도달하였다. 암꽃 선호시간은 서양뒤영벌 일벌, 꿀벌 그리고 서양뒤영벌 수벌은 각각 10시, 12시 그리고 14-16시에 가장 높았다. 봉군 투입 후 서양뒤영벌 일벌과 꿀벌은 각각 2일과 5일째부터 정상적인 방화활동을 시작하여 24일간 정상적인 활동을 하였으나 서양뒤영벌 수벌은 3차례의 심한 기복이 있는 불안정한 방화활동을 보였다. (중략)

• Journal of Apiculture
• /
• v.34 no.1
• /
• pp.47-55
• /
• 2019

Honey bees are a vital part of the food chain as the most important pollinators for a broad palette of crops and wild plants. The climate change and colony collapse disorder (CCD) phenomenon make it challenging to develop ICT solutions to predict changes in beehive and alert about potential threats. In this paper, we report the test results of the bee-counting system which stands out against the previous analogues due to its comprehensive components including an improved dual infrared sensor to detect honey bees entering and leaving the hive, environmental sensors that measure ambient and interior, a wireless network with the bluetooth low energy (BLE) to transmit the sensing data in real time to the gateway, and a cloud which accumulate and analyze data. To assess the system accuracy, 3 persons manually counted the outgoing and incoming honey bees using the video record of 360-minute length. The difference between automatic and manual measurements for outgoing and incoming scores were 3.98% and 4.43% respectively. These differences are relatively lower than previous analogues, which inspires a vision that the tested system is a good candidate to use in precise apicultural industry, scientific research and education.

• Proceedings of the Korean Society of Sericultural Science Conference
• /
• 2000.10a
• /
• pp.126-126
• /
• 2000

• Korean journal of applied entomology
• /
• v.32 no.3
• /
• pp.271-278
• /
• 1993

This experiment was carried out to elucidate the mfluence of honeybees pollinatIOn on yield and YIeld components of soybean at the Kyungbuk Provincial Rural Development Administration from 1990 to 1991. SIX soybean varieties were cultivated in net houses with and without bees. Italian honeybees(Apis melhfem L.) were used. The Vlsiting frequency of bees in net house wIth bees was 58% higher than that of field honeybees, and it was the highest at 10 A.M. during a day. Number of pods per plant and podding ratio of soybean were higher with bees compared with Wlthout bees, especially for the varieties Paldalkong and Dankyongkong. The number of seeds per pod was not significantly different between with bees and without bees, although the percentage of three seeded pod of varieties Danyeobkong and Muhankong and one seeded pod of varieties Hwangkeumkong and Milyangkong 'was increased. The percentage of three seeded pod of Paldalkong and Dankyeongkong, however, was decreased with bees compared with without bees. At the same time no varietal difference was found in two seeded pods between with bees and without bees. Yield of soybeans was increased 0 to 12 % with bees compared with that of without bees. Yield increase was the hIghest in Paldalkong and Dankyongkong. The ratIO of soybean hybrid plant was mcreased with-bees compared with that of without-bees, especially m Paldalkong and Dankyongkong. A negative correlation was found between the ratio of hybrid plant and the duration of flowering in soy¬beans.

• Proceedings of the Korean Society of Applied Entomolohy Conference
• /
• 2003.10a
• /
• pp.145-145
• /
• 2003

• Korean journal of applied entomology
• /
• v.47 no.3
• /
• pp.293-298
• /
• 2008

This study was surveyed the effects by pollinating activity of Apis mellifera and Bombus terrestris released in the paprika vinyl-houses. The foraging activity and behaviour of A. mellifera and B. terrestris visited on the paprika flowers were nearly alike. The pick times of pollinating activity by A. mellifera and B. terrestris were showed the hightest at 11:00 and 15:00, and 09:00 to 11:00, respectively. The rate of fruit set by A. mellifera and B. terrestris released for pollinating paprika were same level with 94%, and these rate were higher than the fruit setting rate which was 92% by fan operated. The qualities of paprika produced by pollinators released were higher than those by fan operated. And weight per fruit, number of seeds per fruit and economical profit per 2,310 $m^2$ were over 10% higher than those by fan operated. Therefore the economical effects by the pollinating activities of A. mellifera and B. terrestris released in the paprika vinyl-houses were obviously demonstrated.

• Korean Journal of Environment and Ecology
• /
• v.26 no.2
• /
• pp.200-209
• /
• 2012

To search for the co-relationships between insect-pollinators and the plant species of Asteraceae, insects visiting in flower and the flowers in Korea, were studied from April 2010 to October 2011. The sum of flower visiting degrees are shown 38 in Lepidoptera, 38 in Diptera, 36 in Hymenoptera, and the lowest 6 in Coleoptera, respectively. 65 insect species are identified pollinators, Hymenoptera 13 species(Apidae 11 sp., Formicidae 2 sp.), Lepidoptera 29 species(Pieridae 5sp., Nymphalidae 12 sp., Satyridae 3 sp., Hesperirdae 3 sp., Lycaenidae 2 sp., Danaidae 1 sp., Moth 2 sp.), Diptera 16 species(Tachinidae 1 sp., Syrphidae 12 sp., Muscidae 1sp., Others 2 sp.), and Coleoptera 6 species(Cetoniidae 1 sp., Cermbycidae 3 sp., Chrysomelidae 1 sp., Mordellidae 1 sp.). 31 pollinator species visits the flower of $Erigeron$ $annuus$, next 15 pollinator species does the flower of $Eupatorium$ $japonicum$, and then 13 pollinator species does the flower of $Aster$ $ageratoides$. Only 2 pollinator species visit the flower of $Tephroseris$ $kirilowii$, $Ixeridium$ $dentatum$, $Inula$ $britannica$ var. $japonica$, $Carduus$ $crispus$, $Ligularia$ $fischeri$, $Ainsliaea$ $acerifolia$, $Synurus$ $deltoides$, $Cirsium$ $setidens$, $Crepidiastrum$ $enticulatum$ and $Dendranthema$ $boreale$. Pollinators of Lepidoptera visit more frequently white flower than yellow or purple one. This study found out that mutualisic relations between plants and insect pollinators is carried out in Korea.

• Journal of Bio-Environment Control
• /
• v.21 no.3
• /
• pp.294-298
• /
• 2012

In sweet cherry (Prunus avium L.) growing there are several severe problem which have to be overcome to produce highly graded fruits because of fruit rots and fruit crackings, if there is frequent precipitation during immature fruit step and picking season. In order to reduce fungicide sprayings and produce qualified fruits in areas with rainy season like as South Korea, rain-sheltered growing is necessary absolutely. Sweet cherry blooms early to medium April in southern area of South Korea. If we depend on honeybees (Apis mellifera) distributed in natural ecosystem, it is not easy to get normal fruit-set every season because of low temperature around blooming time. And also bee keepers seldom sell honeybee hives as a pollinator during spring, instead they keep honeybee hives to get honey. Recently use of B. terrestris as a pollinator of cherry tomato, oriental pumpkin etc. grown in protected cultivation system increase abundantly. Therefore, in this study we studied B. terrestris as an alternate of honeybee to pollinate sweet cherry grown in rain shelter. In part of foraging activity B. terrestris shows staying on a cherry flower for about six second and visiting frequency of 11 flowers per minute. However A. mellifera stayed about 15 second on a flower and visited 4~5 flowers per minute. There were no significant difference in fruit-setting rate and fruit characteristics after using B. terrestris and A. mellifera as pollinators of sweet cherry. Consequently there is no negative effect when we use B. terrestris as an alternate pollinator of A. mellifera in sweet cherry cultivation under rain shelter.

• Korean journal of applied entomology
• /
• v.56 no.4
• /
• pp.365-370
• /
• 2017

The flowering season of jujube (Zizyphus jujuba var. inermis (Bunge) Rehder) is overlaps with the rainy season and the abnormal weather conditions in Korea, thereby affecting pollination, fertilization, and fruit setting. We studied the pollinating activities of Apis mellifera L. and Bombus terrestris L. in rain shelter houses and their effects on fruit setting, with the ultimate aim of stabilizing fruit setting in Z. jujuba. A. mellifera and B. terrestirs were used for pollination in jujube orchard in the rain shelter house for approximately 55 days from June 1, 2016, to July 25, 2016. The peak time of the rate of outgoing and incoming A. mellifera was recorded in the afternoon. However, the diurnal activity of B. terrestris was constant between 09:30 and 17:30 h. The rate of jujube fruit set on current shoots by A. mellifera and B. terrestirs was 10.2 and 8.9%, whereas that in plots with no pollinators was 5.5%. Therefore, using pollinator in the rain shelter house in jujube orchard is effective in promoting jujube fruit setting.

• Journal of Apiculture
• /
• v.34 no.3
• /
• pp.189-195
• /
• 2019

Plants release a large variety of volatile organic compounds (VOCs) into the surrounding atmosphere. Floral volatile compounds (FVCs) emitted from many plants is the critical factors for pollinator attraction and defense for adaptation in environments. Recent studies indicate that the chemical components contributing to FVCs play an important role in the honeybee attractiveness to flowers. Olfactory signals are rapidly learned, indicating that foraging behavior results from the association of plant chemicals acting as chemosensory cues for the bees. Solid phase microextraction(SPME)-GC/MS method was applied to analyze the chemical composition of FVCs according to the different species of Robinia spp. The abundant compounds identified in R. pseudoacacia were (Z)-β-ocimene (34.86%) and linalool (35.47%). Those of the tetraploid R. pseudoacacia were (Z)-β-ocimene (35.42%) and α-Farnesene (33.94%). The volatiles of R. margarettae 'Pink Cascade' comprised an abundance of (Z)-β-ocimene (42.73%), (E)-4,8-Dimethylnona-1,3,7-triene (37.23%). Differences in FVCs of the different species of Robinia spp. are discussed in light of biochemical constraints on volatile chemical synthesis and of the role of flower scent in ecology of pollination.