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A total of 41 species were investigated, including only one species in the check list of Korean insects, which contains five platygastrids. Eleven species of the family Platygastridae are described as new to science from Korea, viz. Allostemma bicolor Buhl & Choi, Amblyaspis koreana Choi & Buhl, Leptacis koreana Buhl & Choi, L. ocellaris Choi & Buhl, Platygaster ciliata Buhl & Choi, P. flavifemorata Buhl & Choi, P. kui Choi & Buhl, P. tripotini Buhl & Choi, Synopeas collinus Choi & Buhl, S. kimi Choi & Buhl, and S. pumilus Buhl & Choi. Further nineteen species are recorded from The Korean Peninsula for the first time, and some new records are added for eleven species, already known from the Peninsula. Keys are given to the genera and species of Platygastridae hitherto recorded from The Korean Peninsula. As a result, platygastrid fauna of The Korean Peninsula is composed of 68 species up to now.
A total of 41 species were investigated, including only one species in the check list of Korean insects, which contains five platygastrids. Eleven species of the family Platygastridae are described as new to science from Korea, viz. Allostemma bicolor Buhl & Choi, Amblyaspis koreana Choi & Buhl, Leptaeis koreana Buhl & Choi, L. ocellaris Choi & Buhl, Platygaster ciliata Buhl & Choi, P. flavifemorata Buhl & Choi, P. kui Choi & Buhl, P. tripotini Buhl & Choi, Synopeas eollinus Choi & Buhl, S. kimi Choi & Buhl, and S. pumilus Buhl & Choi. Further nineteen species are recorded from The Korean Peninsula for the first time, and some new records are added for eleven species, already known from the Peninsula. Keys are given to the genera and species of Platygastridae hitherto recorded from The Korean Peninsula. As a result, platygastrid fauna of The Korean Peninsula is composed of 68 species up to now.
검정알벌과의 분류동정 연구를 통해 한국 미기록아과인 정수리검정알벌아과(신칭, Teleasinae)에 속하는 창살검정알벌(신칭, P. nefrens Kononova)과 이랑검정알벌(신칭, P. sulcatus Kozlov)을 발견하여 한국미기록종으로 보고한다. Two Proteleas species, P. nefrensKononova and P. sulcatus Kozlov, are recorded for the first time in Korea. Teleasinae, which includes these two Proteleas wasps, is also a newly-recorded subfamily in Korea.
The former Scelionidae (sensu stricto) is considered to be a part of Platygastridae, recently. During the parasitic wasp collecting with yellow pan trap, aiming at investigating promising biological control agents which attack on plantbug pests for soybean cultivation, one new species and one unrecorded scelionine species were identified. Opisthacantha albertoi sp. n. was collected from central part of korean peninsula. It is very unique by its yellowish body, compared with the black of the most recorded korean scelonine species. It has a long ovipositor which is 1.3 times longer than body length. It was named after the late Dr. S.-B. Ahn, the noctuid specialist. The unrecorded Tiphodytes gerriphagus (Marchal) was famous for its extremely extraordinary habit of diving for Hymenoptera to attack the eggs of gerrid hosts (Gerris, Trepobates spp.). It was collected nationwidely in Korea. As a result, two genera are newly added in korean scelionine fauna and korean Scelioninae is composed of eight species in five genera in total.
최준식 ( June Seek Choi ),( Jung Yeol Ham ),( Hyun Kyong Ahn ),( Joo Oh Kim ),( Moon Young Kim ),( Jae Hyug Yang ),( Min Hyoung Kim ),( Jin Hoon Chung ),( Hyun Mee Ryu ),( Kyu Hong Choi ),( Alejandro A. 대한산부인과학회 2006 대한산부인과학회 학술대회 Vol.92 No.-
( Hyun Joung Choi ),( Yoon Joo Bae ),( June Seek Choi ),( Hun Kyong Ahn ),( Hyun Sook An ),( Dal Soo Hong ),( Jeong-Sup Yun ),( Jung Yeol Han ) 대한산부인과학회 2018 Obstetrics & Gynecology Science Vol.61 No.1
Objective Severity of nausea and vomiting of pregnancy (NVP) is associated with adverse pregnancy outcomes and poorer quality of life (QOL). The aim of this study was to evaluate the severity of NVP and maternal well-being status using the Pregnancy-Unique Quantification of Emesis and Nausea (PUQE) scale in a Korean population. Methods A total of 527 pregnant women who were receiving prenatal care at 4 hospitals were asked to participate in the study between January 2015 and June 2015. The severity of NVP was evaluated by the PUQE scale and maternal well-being status was evaluated using the visual analogue scale (VAS). Statistical analyses were performed to determine the risk factors associated with NVP and the associations between the severity of NVP and QOL. Results Among the 472 eligible pregnant women, 381 (80.7%) were suffering from NVP during pregnancy. No significant differences (P>0.05) were observed in any of the variables between the 2 study groups, with the exception of smoking, alcohol consumption, and history of NVP. NVP history was found to be the most powerful risk factor (adjusted odds ratio, 11.6; 95% confidence interval, 4.7-28.7). The correlation coefficient (r) between the VAS scores of maternal well-being status and PUQE severity was -0.25 (r<sup>2</sup>=0.062; P-<0.001). Conclusion In this study, an explicit decline in maternal well-being status was observed according to severity of NVP. The PUQE scale may be of help to clinicians, healthcare providers, and researchers because of its simplicity and usefulness as a tool for NVP evaluation.
Riptortus pedestris (Hemiptera: Alydidae) is known to occur in barley field during spring. But, it is unlikely that R. pedestris can find host resource to reproduce in the spring season. To test this hypothesis, we assessed the reproduction of R. pedestris population collected from field from March to September. Riptortus pedestris were collected at intervals of three days from 15th of each month. Females of R. pedestris collected from trap were provided with just water in a breeding dish, and eggs laid were collected daily. Quality of R. pedestris eggs at each month was also evaluated by providing them as host resource to two egg parasitoids. The collected eggs were divided into three groups and tested for hatchability and parasitism by two egg parasitoids, respectively. As a result, R. pedestris population collected in March and April did not reproduce, and fecundity and proportion of reproduced females were the highest in August. But, neither hatchability nor parasitism rate of R. pedestris eggs show significant difference among the sampling months. In conclusion, R. pedestris starts to reproduce from May, and fecundity reaches highest on August. No change in egg quality was found among the study periods.
Diamondback moth (DBM, Plutella xylostella L.), the most destructive pest of cruciferous crops, is well-known as typical subtropical insect pest. A number of biological agents such as diseases, parasites and predators can affect populations of DBM in the fields negatively. In previous reports, we suggested Cotesia glomerata, Diadegma semiclusum, and Microplitis plutellae as promising natural enemies to DBM control at highland areas, but these species are larval parasitoids. In 2004~2009, we searched highland fields cultivating various cruciferous crops for PUPAL parasitoids which can supplement the unsatisfactory parasitism in the augmentative release of larval parasitoids. We obtained adults of hymenopteran parasitoid from DBM pupae in early July at Hoengseong region (asl 540 m), and then identified as Diadromus sp., although being a critical species so far. This parasitoid showed high rate of parasitism, about 13.2%, in mid October at the same region. Development period from oviposition to emergence of Diadromus sp. ranged from 14 to 18 days under 23℃ condition. Adult longevity, > three weeks, was longer when it was provided with 10% sugar solution as food than with water only or without food. Male adults mated as soon as emerging from parasitized DBM pupae, and laid eggs into DBM pupae for a week. Parasitism by Diadromus sp. was highest on 7th day after emergence. In contrast, lethality of DBM pupae which were not parasitized by wasps showed 60% on average for seven days. Parasitized DBM pupae could be stored at 10℃ for two weeks. The simultaneous augmentative release of larval parasitoids and pupal parasitoids can be an important component to integrated DBM management program in the future.
Geographic clines in genetic polymorphisms are widely believed as an evidence of climate change. We hypothesized green peach aphid, Myzus persicae Sulzer, one of the major insect pests in highland chinese cabbage cultivation, may also have some interactions with climate change. As the first step, we tried to find the available markers from six local strains (five collected at different heights in Hoengseong and Pyeongchang area and one from laboratory). A strain from Jeju island was used as an out-group. Although there was no significant difference in sequences of partial ribosomal RNA fragment and mitochondrial cytochrome oxidase I, and esterase isozyme pattern, we found four inter-simple sequence repeat (ISSR) markers in 22 used ISSR primers (+AGA, +CCA, +CGA, CGA+). These primers can be used as good markers to trace the M. persicae gene flow because they showed specific bands according to local strains.
The green peach aphid, Myzus persicae (Sulzer), is one of the most serious pest in cabbage cultivation. Field survey was carried out to know the insecticide resistance levels in five main cabbage cultivation regions (Pyeong-chang, Hong-cheon, Bong-wha, Mu-ju and Je-ju) in 2009. The green peach aphid can resist a wide range of insecticides in five surveyed local populations. Among the nine tested insecticides, four chemicals (methomyl, bifenthrin, pymetrozine and flonicarmid) showed less than 50% mortality in the recommended concentration in all populations. Multi resistant (MR) strain was selected from these populations and esterase over-expression, modified AChE (MACE) and mutation(s) in para-type sodium channel were analysed using native IEF and quantitative sequencing with five local populations. Esterase over-expression and MACE (StoF mutation) were observed in all populations including MR strain. LtoF mutation is well known as a kdr mutation in para-type sodium channel. However, even though LC50 values of MR strain noted over 2,000 times higher than that of susceptible strain against bifenthrin, any mutation was not detected in para type sodium channel and also local populations. These results suggested that unusual case could be existed in pyrethroid resistance mechanism in green peach aphid.