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The Insect Pollinators of Cypripedium japonicum Thunb., the Endangered Orchid in South Korea

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  • URLhttps://db.koreascholar.com/Article/Detail/287247
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한국응용곤충학회 (Korean Society Of Applied Entomology)
초록

Insect pollinators of the endanger orchid Cypripedium japonicum were surveyed and identified during two years, as a part of a conservation project of the orchid at Jukyeup-san and Hwaak-san (Mt.), South Korea. In total 40 individuals of 16 species in 4 families were identified. The dominant family was Halictidae, and Lasioglossum exiliceps Vachal visited the most frequently C. japonicum during the surveys. The average visiting frequency was 2.5 individuals per hour and the highest 4.3, from 12:00 – 13:00 in a day. After 15:00 insects did not visit the flowers at all. However, all of the visiting insects were found to not carry a pollinium or pollens of the orchard on their bodies; pollen carryover by any of the visiting insects did not occur at all. The orchid seems to require certain pollinators in particular body thickness due to its unique pollination mechanism. The orchid has two exit route openings, around 1 cm in diametre, where the entrapped insects can exit and an anther is situated just in front of each opening. It was inferred that a pollen carrier should be around 1 cm in body thickness. Therefore, the candidate species as the proper pollen carriers can be Tetralonia nipponensis Perez, Xylocopa appendiculata circumvolans Smith and Bombus consobrinus Dahlbom among the surveyed visitors.

저자
  • Jong Woo Nam(Division of Forest Biodiversity, Korea National Arboretum)
  • Ja Jung Ku(Division of Plant Conservation, Korea National Arboretum)
  • Ik Je Choi(Division of Forest Biodiversity, Korea National Arboretum)
  • Young Min Shin(Division of Forest Biodiversity, Korea National Arboretum)
  • Shin Young Park(Division of Forest Biodiversity, Korea National Arboretum)
  • Myung Ho Kim(Division of Forest Biodiversity, Korea National Arboretum)
  • Jung Hun Pee(Division of Plant Conservation, Korea National Arboretum)
  • Sung Won Son(Division of Plant Conservation, Korea National Arboretum)
  • IL-Kwon Kim(Division of Forest Biodiversity, Korea National Arboretum)