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논문 기본 정보

자료유형
학술저널
저자정보
Kang, Young-Su (Korea Minjok Leadership Academy) Ko, Jeong-Hoon (Korea Minjok Leadership Academy) Han, Man-Wi (Korea Minjok Leadership Academy) Bae, Yeon-Jae (Department of Biology, Seoul Women's University) Kim, Yong-Gyun (School of Bioresource Sciences, Andong National University)
저널정보
한국응용곤충학회 Journal of Asia-Pacific Entomology Journal of asia-pacific entomology 제8권 제3호
발행연도
2005.1
수록면
319 - 323 (5page)

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The Oriental mayfly, Ephemera orientalis McLachlan, 1875 (Ephemeroptera: Ephemeridae), can be a promising candidate used for monitoring environmental risk in aquatic ecosystem. Its quite large distribution in varying polluted areas raises a hypothesis of its genetic variability due to local selection and adaptation according to environmental hazard gradient. Before addressing the hypothesis, we needed to have polymorphic loci to discriminate individuals and characterize a specific population. For this reason, mitochondrial cytochrome oxidase-I subunit (mtCO-I) was chosen because of its relatively high mutational rate among mitochondrial genome. Two regional E. orientalis populations were obtained at Andong and Hoengseong, where few industrial complexes were located and could be regarded as being conserved in genetic variability. The amplified product showed ${\approx}550$ bp in all tested samples and digested with Alu I and Rsa I. Alu I cuts one site in wild type (major), but two sites in variants. Rsa I cuts one site in both wild and variant samples, but differed in position of the restriction site. With these markers, Andong and Hoengseong populations recorded variant ratios of 1.7% and 30.0%, respectively. However, wide-regional sample including collections from North Korea, China, Japan, and Russia did not show any variant types in this analysis, probably due to quite small numbers of samples (one or two) in each location. In highly polymorphic Hoengseong population, thorax morphological characters reflected the restriction site polymorphism.

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