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Tae-Kyu Kim,Taeman Han,In Gyun Park,Seonghyun Kim,Tae-Woo Kim,Haechul Park 한국응용곤충학회 2015 한국응용곤충학회 학술대회논문집 Vol.2015 No.04
In our previous study with sequenced data from DNA barcoding region of Korean Tettigonia showed that the Jeju population of T. ussuriana (JJ-Tu) more closely related to T. dolichoptera than mainland population of T. ussuriana (ML-Tu) with low genetic distance (0.87-1.05%). In mitochondrial systematics for a eukaryotic organism including orthopteran insects, sequence data from a short mitochondrial DNA fragment should be trait with caution because nuclear mitochondrial pseudogenes (numts) can be unintentionally coamplified when we use universal primers based on a PCR method. In this study, we retried their sequence analysis to avoid coamplication of numts in sequences from cox1 and cox2 genes. and scrutinized each sequence. The molecular evidences (cox1, cox2, and nad1) for Korean species suggest that JJ-Tu is more closely related to T. dolichoptera (0.76-1.23% in cox1; 1.23-1.54% in cox2; 1.01-1.35% in nad1) than ML-Tu (3.77-4.59% in cox1; 3.61-4.76% in cox2; 2.03-3.25 in nad1). The genetic distance of sequence data from cox1 between JJ-Tu and ML-Tu satisfied a requirement for species-distinction by comparing genetic distance between Tettigonia species. Moreover, JJ-Tu is a geographic population of Tettigonia with different morphological traits that is supported with formed a cluster. Although JJ-Tu closely related to T. dolichoptera with low genetic distance, we will determine its taxonomic status through integrative taxonomic study.
Barcoding Old Lepidopteran Specimens Using New Designed Specific Primer Pairs
Taeman Han,Wonhoon Lee,Youngbo Lee,Namjung Kim,Shin-ichi Akimoto,Haechul Park 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
Using eight universal primers and new designed 315 species-specific primers, we tried to retrieve COI sequences from 45 dried specimens of 36 butterfly species collected from 1959 to 1980. The eight universal primers were entirely failed in PCR amplification and sequencing of all specimens. In the other hand, the 315 primers, targeting fragments of 71–417 bp, generated various lengths of COI sequences ranged from 444 bp to 658 bp from all specimens. Among 284 primer pairs, 26 primer pairs designed for Limenitis camilla, Argynnis niobe, and Brenthis daphne were success to produce COI sequences of congeneric speices, Limenitis doerriesi, Argynnis nerippe, and Brenthis ino. It suggests that the species-specific primers can be applied for analyzing COI sequences of closely related species. Our study reveals that newly designed species-specific primers will be effective to retrieval of COI sequences of old butterfly specimens.
Effect of temperature on the development of Alphitobius diaperinus (Coleoptera: Tenebrionidae)
Kim, Seonghyun,Park, Haechul,Park, Ingyun,Han, Taeman,Kim, Hong Geuan Korean Society of Sericultural Science 2017 International Journal of Industrial Entomology Vol.35 No.2
The developmental responses of insects to temperature are important considerations in gaining a better understanding of their ecology and life histories. Temperature dependent models permit examination of the effect of temperature on the geographical distributions, population dynamics, and management of insects. The measurements of insect developmental and survival responses to temperature pose practical challenges that depend. The developmental characteristics of A. diaperinus were investigated at four temperature regimes (20, 25, 30 and $35^{\circ}C$), a relative humidity of 60%, and a light:dark photoperiod of 16:8h. The developmental time from larva to adult was 129.0, 49.8, 40.5 and 31.9 days at temperatures of 20, 25, 30 and $35^{\circ}C$, respectively. Pupal rate was 80.0%, 100%, 83.3% and 91.7% at temperatures of 20, 25, 30 and 35 respectively. There is an increasing need for a standardized manual for rearing this. Pupa had significantly lower weights at $35^{\circ}C$ than at the other temperatures. Female pupae (20mg) were significantly heavier than male (17mg).
Taeman Han,Jongchel Jeong,Jin Ill Kim,Dae-Am Yi,Seung Lak An,In Gyun Park,Haechul Park 한국응용곤충학회 2014 한국응용곤충학회 학술대회논문집 Vol.2014 No.10
Scarabaeus typhon has the extensively wide distribution from Europe to the Far East Asia and the extremely similar morphological feature with closely related species. The Korean population of S. typhon had often been confused in its specific status including several misidentifications and synonymous name. By these circumstances, we presumed that there is a possibility to exist potential cryptic species or subspecies, which might be separated between local populations across their distribution range. Therefore, the primary aim of this study was to reassess that the geographical populations of S. typhon can be divided into each other and to establish a sketchy knowledge of its unknown phylogenetic relationships between the relatives using COI gene and comparative morphology. As the result, S. typhon was detected as a single species despite to have the wide distribution and the various intraspecific distances ranging from 0.67% to 3.50%. Two species, S. pius and S. babori were revealed to have two distinct lineages respectively. Among them, two Korean female specimens were detected belonging to group B of S. pius, it is suggested as a cryptic species or subspecies.
Effect of temperature on the development of Alphitobius diaperinus (Coleoptera: Tenebrionidae)
( Seonghyun Kim ),( Haechul Park ),( Ingyun Park ),( Taeman Han ),( Hong Geuan Kim ) 한국잠사학회 2017 International Journal of Industrial Entomology Vol.35 No.2
The developmental responses of insects to temperature are important considerations in gaining a better understanding of their ecology and life histories. Temperature dependent models permit examination of the effect of temperature on the geographical distributions, population dynamics, and management of insects. The measurements of insect developmental and survival responses to temperature pose practical challenges that depend. The developmental characteristics of A. diaperinus were investigated at four temperature regimes (20, 25, 30 and 35℃), a relative humidity of 60%, and a light:dark photoperiod of 16:8h. The developmental time from larva to adult was 129.0, 49.8, 40.5 and 31.9 days at temperatures of 20, 25, 30 and 35℃, respectively. Pupal rate was 80.0%, 100%, 83.3% and 91.7% at temperatures of 20, 25, 30 and 35 respectively. There is an increasing need for a standardized manual for rearing this. Pupa had significantly lower weights at 35℃ than at the other temperatures. Female pupae (20mg) were significantly heavier than male (17mg). ⓒ 2017 The Korean Society of Sericultural Sciences Int. J. Indust. Entomol. 35(2), 106-110 (2017)
Kyung-O KIM,Sooo Youog KIM,Jaehoon Ko,Gangug Lee,Taeman Kim,Jeonghyun Yoon 한국방사성폐기물학회 2011 방사성폐기물학회지 Vol.9 No.2
한국방사성폐기물관리공단 주관 하에 개념 설계된, 연소도이득효과 적용 대용량 수송용기에 대해 방사 선 차폐 안전성을 평가하였으며 여러 방사선원들이 수송용기 주변 선량률 분포에 미치는 영향을 분석하였다. 가능한 모든 방사선원(중성자선원, 감마선원, 방사화선원)들을 고려하였으며 보수적인 가상의 핵 연료(너비: WH 17 RFA, 축방향: CE Type)를 선정, 실제 상황과 동일한 조건이 되도록 계산모델을 구축 하였다. 모든 조건(정상 및 가상사고 조건)에서 표면선량률과 외부선량률이 법적기준치를 만족하고 있었 으며 축방향 높이에 따라 각 선원들의 기여도가 변하고 있었지만 정상조건에서의 최대 표면선량률과 외 부선량률은 방사화선원에 의한 영향이 가장 높은 것으로 확인되었다. 가상사고 조건에서는, 중성자선원 의 선량률 기여도가 대략 90%에 달하고 있었으나 수송용기 끝단에서는 방사화선원에 의한 선량률이 급 격하게 상승함에 따라 BUC 적용 수송용기의 방사선 차폐해석시 충분히 보수적으로 해석되도록 방사화선 원을 정밀하게 분석하여 설정하여야 할 것으로 판단되었다.