The number of pest detection in wooden pellets has increased since wooden pellets as biomass-solid refuse fuel (Bio-SRF) was allowed an import in Korea. In this study, we analyzed an insecticidal effect on pupal and adult stages of red flour beetle (Tribolium castaneum) and maize weevil (Sitophilus zeamais) in wooden pellets using two fumigants, methyl bromide (MB) and phosphine (PH3), for establishing a guideline on fumigation. MB and PH3 both showed a dose-dependent manner in insect mortality after fumigation under 60% filing rate (FR) of wooded pellets in desiccator. In MB fumigation to T. castaneum, adults and pupae showed 100% mortality at 128 mg/L and 161 mg/L in 10°C at 24 h post treatment and pupae showed 100, 74, and 8% mortality against 99 mg/L of MB in 20, 40, and 40% FR, respectively. In PH3 fumigation, S. zeamais adults showed 92% mortality to 4 mg/L, meanwhile T. castaneum adults showed 100% mortality at 120 h post treatment.

A viral genome was assembled de novo from next-generation sequencing (NGS) data from bean bugs, Riptortus pedestris, infected with an entomopathogenic fungus, Beauveria bassiana (Bb), and was further confirmed via the RACE method. Based on the phylogenetic analysis of the RdRp sequences, RiPV-1 was clustered in the unassigned insect RNA viruses with two other viruses, APV and KFV. These three viruses were suggested to constitute a new group of insect RNA viruses. Interestingly, RiPV-1 replication was increased dramatically in bean bugs 2 to 6 days after fungal infection. In conclusion, a novel insect RNA virus was found by NGS data assembly. This virus can provide further insight into the interaction between virus, fungus and the host.

Monochamus saltuarius is one of the insect vector of pine wilt disease with Monochamus alternatus. The present study aimed to investigate the dose to induce sterile and the effect of sterility according to the gender of M. saltuarius. As the electron beam irradiation dose increased, the hatchability, adult eclosion rate and longevity of the former mid and late maturation feeding stage of adults was slightly reduced. However, there was no difference between these two adults. In addition, female adults were more sensitive to the electron beam than the male adults. Hatchability of the F1 generation of ♂T × ♀N o r♀T × ♂N (T: 200 Gy electron beam irradiation, N: 0 Gy) was completely suppressed. As electron beam irradiation dose increased, the fecundity of female adults were slightly decreased. Results by comet assay showed that electron beam irradiation induced as dose increased DNA damage in M. saltuarius adults. These results suggest that SIT using electron beam may be useful for control of M. saltuarius.

Composite resins are developed as restorative materials to improve esthetics and mechanical properties. To improve the physical properties of resin material, resin filler have to be added. However, no imaging method is adopted for resin filler distribution. Optical coherence tomography (OCT) is a optical imaging technique to delineate microscopic structures within biological tissue. The OCT application to dental composites resin and its filler is not described yet. So, this new and advanced optical method is needed for clinical application for evaluation of dental composite resin. To analyze the spatial distribution of dental composite resin and to evaluate the resin restoration in cavity, frequency domain optical coherence tomography (FD-OCT) was used for their analysis. Resin restored tooth was prepared. For morphological observation, serially sectioned teeth, conventional X-ray taking and micro computed-tomography (CT) images were compared with OCT images. The experiment has done to evaluate the success of the resin restoration using 3 dimensional structure OCT image. In this research, OCT is evaluated as a new technique to image resin restoration. The evaluation of resin restored tooth was performed by OCT. Inappropriate restoration such as marginal adaptation, large porosities, internal integrity and poor contour could be detected. Resin filler also could be checked by OCT. The distribution, number, regularity and size of resin filler can be differentiated from several commercial products. Considering the characteristics of the OCT, it can be used to evaluate the defects of resin restoration, resin filler distribution, and internal integrity between resin material and tooth structure. The OCT can be considered to be a new and advanced method for the evaluation of resin restorations.

본 연구는 두 나라로 구성된 개방 경제를 가정한 DSGE 모형을 통해 환율과 거시경제변수간의 단절현상(exchange rate disconnect)에 대한 분석과 이론적 근거를 제시하고자 한다. 기존의 DSGE 모형에 금융중개기관(financial intermediation sector)을 추가하여 환율결정과정에서 의 은행의 역할을 강조하였다. 2007년 국제금융위기이후로 최근의 자산가격연구(asset pricing theory)의 중요한 흐름은 자산가격형성에 있어서 은행이 가지는 자금조달제약(financial constraint) 의 영향을 강조하는 것이다. 본 연구에서도 은행은 1. 자국의 가계로부터의 예금조달만 가능하며 (segmented global deposit market), 2. 예금조달은 순자산 규모에 제약을 받는다(balancesheet constraint)는 두 가지 자금조달제약을 가정하였다. 이 두 가지 제약으로 인해 국가 간 소 비의 차이가 환율과 연결되지 않는다는 것을 이론적으로 분석함으로써, 환율과 거시경제변수간의 단절현상 중 하나인 배커스-스미스 퍼즐(Backus-Smith puzzle)에 대한 하나의 근거를 제공하였 다. 모형을 미국과 캐나다의 주요 거시 경제 변수 moment 들에 맞춘 실증 분석 결과, 두 나라의 소비 차이와 환율의 상관계수는 -0.25로 나타나 일반적으로 두 변수간 음(-)의 상관계수를 보이는 배커스-스미스 퍼즐과 부합하였다.

The advent of smart shopping environments including innovative information technology, advanced delivery systems, and extended smart phone use has rapidly changed the shopping methods and activities of the consumers. They have chosen smart shopping with greater frequency, which minimizes the use of time, money, effort and energy to buy the right products and to gain shopping experiences such as hedonic and utilitarian feelings (Atkins and Kim, 2012). The concept of smart shopping is based on value co-creation which can be explained as the value from the outcome of interaction between firms and consumers (Grönroos, 2011, Vargo and Lusch, 2004). In the value co-creation process, smart shoppers are willing to perform customer participation behaviors such as information seeking, information sharing, responsible behavior, and personal interaction, and to show customer citizenship behaviors such as feedback, advocacy, helping, and tolerance (Yi and Gong 2013). In smart shopping, a consumer involves in shopping experiences through product purchases and while engaged via the shopping environments such as an elaborate store design, educational events, recreation, and entertainment (Fiore and Kim, 2007). These shopping experiences, which contain both hedonic and utilitarian value (Holbrook and Hirschman, 1982), are better explained by consumer processes, responses on the shopping environment, situation, and consumer characteristics (Fiore and Kim, 2007). The attributes of shopping experience are symbolic, hedonic, and aesthetic (Holbrook and Hirschman, 1982) and utilitarian and hedonic (Kim, Lee and Park, 2014). Smart shoppers who are involved with value co-creation obtain hedonic benefits with emotional, funny, and enjoyable feelings and along with utilitarian benefits such as rational, functional, task-related experiences (Holbrook and Hirschman, 1982). The value co-creation and the shopping experience lead to greater customer equity such as value equity, brand equity, and relationship equity (Lemon, Rust, and Zeithamal 2001). Based on previous literature review, the authors constructed the following hypotheses. First, smart shopping will have positive effects on value co-creation, the shopping experience, and customer equity. Second, the smart shopping will have positive effects on both value co-creation and the shopping experience. Third, value cocreation will have positive effects on the shopping experience. Fourth, value cocreation and the shopping experience will have positive effects on customer equity. The authors collected the data based on questionnaires from mobile smart shoppers. The SPSS 20 and AMOS 20 statistical programs will be used for the data analysis. The analysis found the positive influence that smart shopping has on value co-creation and the shopping experience, and customer equity. This is the first study that shows these relationships from an empirical point-of-view. The findings of the study have useful managerial implications on the effects of value co-creation on both smart shoppers and firms. Value co-creation will provide smart shoppers with better product or service quality and enhance firms with more valuable customer equity. The greater shopping experience is the greater customer equity that will be developed. Value co-creation also will give firms a strong competitive advantage in terms of an organization’s learning, brand perception, reduced risk, improvement of customer relationships, and lowering cost for marketing, and research and development. The study has limitations. First, other potential variables of the value co-creation influencing new service development, customer loyalty, and customer satisfaction etc, could be considered. Second, the length of the relationship between smart shoppers and the service provider in value co-creation process should be considered. Third, the study needs to be generalized to cross sectional research beyond smart shopping area. Finally, to examine the effects of value co-creation and the shopping experience on customer equity, future research could investigate how value co-creation and the shopping experience affect the objective financial performance of a firm.

Viral video advertising as a branded entertainment has shown its potential to overcome consumer skepticism by spreading the brand message through individuals’ social connection. Although brand placement prominence and brand disclosure may be critical factors that influence forwarding intention in the viral video ad context, less research has examined these relationship. To fill these gaps, this study aims 1) to examine the psychological mechanisms through which the brand placement prominence influences consumers’ forwarding intention of viral video advertising, and 2) to investigate the potential moderating role of brand disclosure timing. This study shows that the level of brand prominence in a viral video ad is an important factor influencing viewers’ forwarding intention sequentially mediated by persuasion knowledge, critical processing and enjoyment. The moderating role of brand disclosure timing investigated in the current study suggests that when the branded viral video has a high level of brand prominence, post brand disclosure leads to a higher forwarding intention compared to the prior brand disclosure.

Introduction What is fast fashion? Does this term just define all the latest or the most popular or the most famous clothes? In reality, this social phenomenon goes beyond the conventional notion of industrialized fashion and carries more importance than is implied by this view. Fast fashion, defined as “the retail strategy of adapting merchandise assortments to current and emerging trends as quickly and effectively as possible” (Sull & Turconi, 2008, p. 5), has received a great amount of attention from fashion marketers and consumers since its inception during the 21st century (Tokatli, 2008; Jang et al., 2012). The purpose of this study was to deepen our understanding of fast fashion consumers. Based on the review of related literature, the key variables related to fast fashion consumers were categorized into three dimensions: consumer characteristics (i.e., fashion leadership, price consciousness), consumer awareness (i.e., awareness of sustainable practices of fast fashion retailers, perception of fashion democratization), and attitude toward fast fashion retailers. The three dimensions were examined in a sequential manner to assess the power of each set of antecedents in explaining college students’ repatronage intention of fast fashion retailers. Related Literature While fast fashion retailers have experienced a huge financial success mainly due to their affordable and accessible fashion products, they have also been harshly criticized by some members of the public because of their lack of corporate social responsibility. Indeed, fast fashion retailers’ low cost and efficient supply chain management systems have had negative effects on the environment, society, and people (Barnes & Lea-Greenwood, 2006; Bruce & Daly, 2006; Ro & Kim, 2009). The U.S. Environmental Protection Agency (EPA) announced that about 14.3 million tons of textiles were generated in 2012, making up 5.2 percent of total municipal solid waste. Such massive textile waste has been attributed to fast fashion retailers because the cheap and trendy items they produce encourage consumers to make frequent purchases and to frequently dispose of unwanted clothing. Furthermore, several fast fashion retailers (e.g. Gap and Forever 21) have been criticized for the use of child labor and the sweatshop-like conditions of their factories (Ramishvili, 2012). Moreover, some fast fashion retailers have been involved in intellectual property lawsuits because they replicated the runway designs of prominent designers to produce knock-off products (Pous, 2013). In response, a few fashion experts claim that fast fashion retailers destroy fashion because the styles produced lack of aesthetic expression and creativity (Choufan, 2013). However, these issues are not solely a problem associated with fast fashion retailers. In fact, the entire fashion industry is responsible for adverse environmental and societal consequences to some extent. Traditional fashion retailers (e.g. Diesel, Levi’s, Dolce & Gabbana, Chanel, Hermès) also generate huge amounts of textile waste along with hazardous waste that results from the chemical materials used in production processes. Their products are also manufactured in developing countries to keep production costs low. They also may not pay attention to the labor environment. Therefore, traditional fashion retailers along with fast fashion retailers have responsibilities related to sustainability issues (Casey, 2014; Greenpeace, 2013). Nevertheless, fast fashion retailers have received the majority of the public’s criticism regarding these issues. Contrary to a popular belief, fast fashion retailers have taken some steps to apply the concept of sustainability into their business practices. For example, H&M collects unwanted garments for recycling, uses recycled or reused materials for producing new garments and uses organic cottons (Lanyon, 2013). Other fast fashion retailers like Zara, Topshop and Uniqlo as well as H&M also have launched eco-friendly collections (MacDonald, 2012). Moreover, H&M, Zara, Mango and Uniqlo have committed to eliminate the release of toxic chemicals by 2020 in response to Greenpeace’s Detox campaign and to public pressure (Greenpeace, 2012). Furthermore, fast fashion retailers are also paying attention to labor issues. For instance, after more than 1,100 people died from the Rana Plaza building collapse on April 24th in 2013 (Chua, 2013), major fast fashion retailers signed the Accord on Fire and Building Safety in Bangladesh. This accord indicates these retailers agree to be responsible for the working environment for employees in apparel factories in Bangladesh. Although their ultimate goal might be to increase their sales by recovering their brand images damaged by unfavorable media coverage, it is clear that movement toward sustainable practices will minimize the negative impact of their business practices on the environment and society and encourage other retailers to incorporate sustainable practices. In spite of the harsh criticism directed at fast fashion retailers, consumers still like wearing fast fashion products considering that fast fashion retailers have continuously expanded their businesses worldwide and have been successful. Prior researchers interested in fast fashion retailers have focused on supply chain management issues (Barnes & Lea-Greenwood, 2006; Mihm, 2010), the value of fast fashion (Cachon & Swinney, 2011), and indentifying business strategies of a particular fast fashion retailer (Ferdows, Lewis, & Machuca, 2005; Ghemawat, Nueno, & Dailey, 2003; Tokatli, 2008). However, few researchers have theoretically explained why consumers still like fast fashion products and visit fast fashion retailers. With that in mind, the present study identified various factors that positively influence consumer attitude and their patronage intention toward fast fashion retailers. Furthermore, although fast fashion retailers have positive motivations toward consumers (e.g. provide inexpensive fashionable items,participate in sustainable practices), consumer research has highlighted their negative effects on the environment and society (e.g., Morgan & Birtwistle, 2009). Methods An online self-administered survey methodology was employed with a purposive sample of U.S. college students who had shopped at fast fashion retailers. A total of 154 usable responses were used for data analysis. The click through rate was 79.79%. Exploratory factor analysis and hierarchical regression were used to examine the interrelationships among the three dimensions of antecedents (consumer characteristics, consumer awareness, consumer attitude) and repatronage intention. The measurement items employed were developed based on previous literature. All items were reviewed and modified to fit the context of this research: consumer attitude and patronage intention toward fast fashion retailers (Madden, Ellen, & Ajzen, 1992); perception of fashion democratization (PFD) (Dubois, Czellar, & Laurent, 2005); fashion opinion leadership (Flynn et al., 1996; Goldsmith & Hofacker, 1991); and price consciousness (Lichtenstein et al., 1993). The items for measuring awareness of sustainable practices of fast fashion retailers (ASP) were created based on news articles presenting sustainable practices fast fashion retailers actually engaged in. Participant Characteristics Among the participants, 48.1% were majoring in a fashion related area (e.g. fashion design, retail merchandising). The majority of the participants were female (85.1%). Most participants (92.2%) were between 18 and 25 years old. With respect to ethnicity, 63.0% were Caucasian. Approximately half of the participants (52.6%) reported that they earned less than $10,000 annually. Also, 26.0% of the participants shopped at fast fashion retailers once a month. Results A weighted least squares (WLS) hierarchical regression analysis was used for data analysis. Fast fashion shopping frequency was used as a weight variable as it is related to the variability in the dependent variable. The results revealed that: (a) fashion leadership positively influenced repatonage intention (Model 1); (b) after controlling consumer characteristics, PFD played a significant role in increasing variance explained in repatonage intention (Model 2) and (c) after controlling consumer characteristics and awareness, consumer attitude was found to be a significant predictor, partially mediating the linkages from fashion leadership and PFD to repatronage intention (Model 3). Implications and Conclusion Our findings suggest that fashion leadership plays an important role in the fast fashion market because it initiates the acceptance of new trends and leads to diffusion of new fashion. Prior research suggests that fashion leaders (versus followers) are willing to take risks in trying new items offered by fast fashion retailers, are interested in fashion information, tend to retain fashion items for socializing for a short period of time and need various and unique fashion items (Goldsmith, Freiden & Kilsheimer, 1993; Kang & Park-Poaps, 2010). Given that fast fashion retailers promote frequent purchases and decrease the financial burden by offering new products on a weekly basis and charging low prices, our finding is consistent with fashion leaders’ characteristics prior research identified. Another important finding is that the role of PDF in defining fast fashion consumers. Fast fashion products look similar to high-end products, but are comparatively inexpensive because the fast fashion retailers apply or copy high-end designs into their products and use cheap materials (Niinimäki, 2009; Reinach, 2005). Also, fast fashion retailers open tremendous stores across the world, which make fashion more accessible to consumers globally. As a result, fast fashion retailers accelerate the fashion democratization and it means that both concepts of fast fashion and fashion democratization are highly related. As Wang (2010) stated, “fast fashion’s soul is to make fashion democratized with its low price and speed” (p.10). Further research is needed to extend and corroborate the findings of this study.

As consumers take greater control over products and brands they consume, electronic word-of-mouth (eWOM) and user-generated content (UGC) are now being considered as one of the most critical product sources for consumers. Most notable in recent years has been the widespread emergence of eWOM in social media. The proliferation of a variety of social networking sites (SNSs), propelled by the development of mobile technologies (e.g., smartphones), has allowed consumers to share, more quickly and easily than ever before, product information, reviews, and consumption experiences. Perhaps one of the newest and most effective ways to communicate brand information and experiences in digital environments is the ‘brand-selfie.’ Every day, millions of selfies (i.e., a photograph that one has taken of oneself, typically with a smartphone or webcam and shared via social media) are taken and then posted on a variety of SNSs all over the world, providing people the opportunity to show multiple facets of the self (Bazarova et al., 2013). Further, there are consumers who voluntarily post selfies with brands/products they possess (so called brand-selfies) and brand-related hashtags (e.g., your #brand). Through brand-selfies, consumers not only express themselves by connecting with and extending through brands, but also influence peer consumers’ brand attitudes and purchase decisions by sharing brand information. In order to better understand how the selfie can succeed on SNSs as a new form of eWOM, in the present study, we attempt to identify key predictive variables that may lead consumers to post brand-selfies and engage eWOM in social media. We do so by comparing how such variables differ between those who post brand-selfies and those who do not. Specifically, this study examines whether brand-selfie-posting behavior is influenced by two individual difference factors (i.e., narcissism and materialism), and whether it is associated with consumers’ beliefs that SNSs are brand/product information sources. Using a survey administered by an online panel, a total of 305 participants who had had the experience of taking and posting selfies on SNSs participated. Discriminant analysis identified the characteristics of consumers who post brand-selfies, and those who do not. Findings suggest that narcissism, materialism, and belief that SNSs are a brand/productinformation source are significant factors in stimulating SNS users’ brand-selfie posting behaviors, and that they could be used to differentiate between brand-selfie posters and no-brand-selfie posters. Of these factors, consumers’ perceptions of SNSs as a source of brand/product information best predicted brand-selfie posting behaviors, followed by materialism and narcissism. Areas for future research are discussed.

Malassezia pachydermatis (M. pachydermatis) otitis is an important infectious disease of dogs throughout the world. In the present study, the presence, diagnosis, clinical signs and chemotherapy of M. pachydermatis were studied in clinical otitic dogs of Lahore and its suburbs. During two-year study period, a total of 200 ear cerumen samples from otitic dogs were examined microscopically. Of these, 46 (23%) were found positive for M. pachydermatis. The difference in the prevalence of infection between the pendulous ear and erected ear dogs as well as sex predilection was found nonsignificant (P>0.05). However, a significantly (P<0.05) higher prevalence (86.90%) was recorded in dogs of more than one years of age group. The animals determined positive for the M. pachydermatis were divided into two groups (A and B) and treated with Clotrimazole and Nystatin, respectively. Efficacy of both the antifungals was evaluated on the basis of reversal of clinical signs scoring and cytological examinations at 7, 14, 21-day post treatment. The overall efficacy of Clotrimazole and Nystatin was 73% and 68%, respectively. Clotrimazole showed better results as compared to Nystatin in accomplishing cure rate from mycological infection. It was concluded that M. pachydermatis is a significant cause of otitis in dogs wherein Clotrimazole proves to be a more effective drug in eliminating the infection in the affected Dogs.

Since April 2012, doctor fish in the breeding tank and in the quarantine tank in Hanwha Aquaplanet Yeosu Aquarium have been dying, accompanied by diffuse bleeding around the mouth, in the chin, and at the bottom of the abdomen. In this study, the cause of death would be examined through the bacteriological study of doctor fish and the rearing water quality in the aquarium. The water quality and the bacterial counts of the rearing water in the exhibit tank and in the quarantine tank were analyzed once a week, starting from August to November 2014. Water quality was measured based on the following data: temperature was in the range of 24.5~26.8℃, pH at 6.77~7.94, DO at 6.15~8.61 ppm, ammonia at 0~0.93 ppm, nitrite at 0.009~0.075 ppm, and nitrate at 1.1~40.9 ppm. Studies revealed that the differences in these water quality factors were not related to the death of doctor fish. Bacterial counts in the rearing waters of Garra rufa slightly increased to 103~104 CFU/ml, just before the death of the doctor fish. Twelve strains of bacteria were isolated from the dead fish and rearing waters. The isolates were identified as Aeromonas veronii, Citrobacter freundii, Pseudorhodoferax aquiterrae, Shewanella putrefaciens, and Vibrio anguillarum on the basis of 16S rRNA gene sequences. The most dominant species was C. freundii, which showed medium sensitivity to florfenicol and norfloxacin, and was resistant to amoxacillin, doxycycline, oxytetracycline, tetracycline, and trimethoprim. Ten isolates were confirmed to be pathogenic to the doctor fish. Doctor fish infected with C. freundii and S. putrefaciens showed high mortality in the experimental groups. These results indicate that the variation in bacterial numbers in the rearing water was related to the death of doctor fish. C. freundii and S. putrefaciens were directly implicated in causing the death of doctor fish in the aquarium.

Cost for plant survey has been dramatically reduced due to the development of mobile technology to obtain pictures with their GPS coordination. We developed a PlantGPS system consisting of an Android application specialized for collecting plant pictures and their locations using mobile devices, a server-side component for uploading data, and a web-based interface for managing and analyzing data. As examples of application of our PlantGPS system, surveys of “plants in Nangsae (Daksum) Island” and “ferns in Chollipo arboretum” were conducted. Results showed that our PlantGPS system could be used to quickly survey plant distribution in restricted area with reasonable time and effort.

Monochamus alternatus is one of the insect vector of pine wilt disease with Monochamus saltuarius. The present study aimed to investigate the dose to induce sterile and the effect of sterility according to the gender of M. alternatus. As the electron beam irradiation dose increased, the longevity of the mid and late maturation feeding stage of adults was slightly reduced. However, there was no difference between these two adults. In addition, female adults were more sensitive to the electron beam than the male adults. Hatchability of the F1 generation of ♂T×♀N or ♀T×♂N (T: 200 Gy electron beam irradiation, N: 0 Gy) was completely suppressed. As electron beam irradiation dose increased, the fecundity of female adults were slightly decreased. Results by comet assay showed that electron beam irradiation induced as dose increased DNA damage in M. alternatus adults. These results suggest that SIT using electron beam may be useful for control of M. alternatus.

Distillers dried grain (DDG) and makgeolli spent grain (MSG) are agricultural by-product to produce alcoholic beverage. However, they are known to contain enough nutrients. Mealworm is a promising insect resource for an animal feed ingredient as well as alternative human food. With low cost, DDG and MSG were investigated as a feed ingredient for rearing high quality mealworms. DDG and MSG were mixed with wheat bran and compared to control feed (only wheat bran) for its effects on larval survivorship, larval weight, duration for larval development, pupation rate, and pupal weight. Adding DDG on wheat bran showed positive results for larval weight, duration for larval developmental period, and pupation rate. However, adding MSG made longer duration for larval development, but it also improved larval weight, pupal weight with more than 90% pupation rate. We confirmed that adding 30～50% of DDG or MSG to conventional wheat bran have a strong potential to replace the conventional wheat bran insect feed for quality insect production.

The two spotted mite, Tetranychus urticae Koch, is a global pest, and has developed severe resistance to several types of acaricides. This study compared the development in susceptible (S) and acequinocyl, bifenazate, pyridaben, abamectin and etoxazole-resistant (AcR, BR, PR, AbR and ER) strains of T. urticae by X-ray irradiation. When eggs were irradiated with 100 Gy, the egg hatching was completely inhibited in all strains. When nymphs were irradiated with 200 Gy, their hatching was completely inhibited in all strains. When adults were irradiated, the fecundity and egg hatching was decreased at 150 Gy and above, and hatchability of F1 generation was completely inhibited at 300 Gy in all strains. Adult longevity was slightly increase at 150 Gy and above. In addition, we performed quantitative real-time PCR on several genes. To examine the difference of all strains on radiation stress-induced gene expression, we performed quantitative RT-PCR (qPCR) of several known stress-induced genes.

Mealybugs (Hemiptera: Pseudococcidae) are major pests of a wide range of crops and ornamental plants worldwide, and represented by 56 species in Korea. Occurrence of, or damage by, the longtailed mealybug, Pseudococcus longispinus Targioni-Tozzetti has not been reported since 2002. However, for the first time in many years, P. longispinus was reported at Phalaenopsis orchids by Kim et al in 2015. Therefore, the present study aimed to investigate the distribution of P. longispinus which is usually found inside a greenhouse or a building where the host plants are. We have collected 129 mealybug samples at 254 sites from Korea. Among these, 27 of P. longispinus and 62 of an unidentified Pseudococcus species were found mainly in ornamental plants such as Heteropanax fragrans, commonly known as happy trees in Korea. Morphological characteristics of the unidentified mealybug were very similar to those of P. longispinus. However, the genetic variability in COI sequence comparison was significantly different between the two species. Further studies are needed to clarify the valid name for this unidentified species, and we are currently working on it.