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2020년 국내 비래 벼멸구와 흰등멸구의 약제 저항성 점 돌연변이 조사
신은경(Eungyeong Shin),강열규(Yeol-Gyu Kang),정수연(Su-Yeon Jeong),나진호(Jin-Ho Na),구현나(Hyun-Na Koo),김길하(Gil-Hah Kim) 한국농약과학회 2021 농약과학회지 Vol.25 No.4
Nilaparvata lugens and Sogatella furcifera are insect pests that cannot overwinter in Korea, so they migrate from China and Southeast Asian countries every summer, causing damage to rice. Since it is impossible to care foreign control treatment, their resistance levels and even the flight of the planthoppers, diagnosis of resistance to insecticide is important for successful control. Therefore, this study evaluated the frequencies of mutations that is known to confer resistance to insecticides through the analysis of point mutations in AChEs, nAChR and GABA channel genes using collected the planthoppers from the west and southern coasts of Korea, 2020. As a result, F/Y330S, which is an AChE point mutation, occurred the most frequently in two planthopper species, and A301N, which is a GABA point mutation, was the most common in Sogatella furcifera.
Shin-Kwon KIM(김신권),Ji-Yeon HYEON(현지연),Jin-Ho NA(나진호),Bong-Soo LIM(임봉수),Sung-Pyo HUR(허성표) 한국수산해양교육학회 2021 水産海洋敎育硏究 Vol.33 No.1
Previous methods for identifying the sex of eels were difficult to apply to yellow eels due to their undeveloped gonads. In this study, we investigated easy method to identify the sex of cultured eel, Anguilla japonica, using the ratio between the vertical and horizontal length of the pectoral fin and total body length. Females had longer total body length (TL):horizontal fin length (Fh) and TL:vertical fin length (Fv) ratios than males. Based on our results, we found that both the TL:Fh and the TL:Fv ratio were suitable for determining the sex of cultured yellow eel. We therefore suggest using the TL:Fh ratio to determine the sex of yellow eels under natural conditions (i.e. without anesthetizing or sacrificing the eels). Specially, eels with TL:Fh ratios below and above 31.6 should be identified as males and females. To our knowledge, this is the method to determine the sex of yellow eel.
필리핀 연안에 접안하는 열대산 실뱀장어 Anguilla marmorata와 A. bicolor pacifica의 형태 및 유전적 특징
이남실(Nam-Sil LEE),김재홍(Jae-Hong KIM),이배익(Bae-Ik LEE),김신권(Shin-Kwon KIM),나진호(Jin-Ho NA),김광석(Kwang-Seog KIM),김대중(Dae-Jung KIM) 한국수산해양교육학회 2015 水産海洋敎育硏究 Vol.27 No.4
Recently, import supply of glass eels from Philippines has been increased in South Korea, and the species distinction was very important to import traders and Anguilla marmorata and A. bicolor pacifica are major species at Philippines. In this study, the species distinction and the rate were researched targeting imported glass eels from the estuaries of North Luzon and the South Mindanao in May and July, 2014. Dorsal fin position and pigmentation pattern at caudal fin are the trait standard for species distinction. The results about morphological identification were coincide with the result of the genetic identification, and the regional distribution of A. marmorata rate was over 90% at North Ruzon in May. However, the rates of A. bicolor pacifica and A. mamorata were 63.3% and 36.7% in May, and were 53.3% and 46.7% in July respectively at South Mindanao.