A simplified diet for rearing Agrius convovuli (Lepidoptera: Sphingidae)

Seonghyun Kim,Haechul Park,Ingyun Park 한국응용곤충학회 2015 한국응용곤충학회 학술대회논문집 Vol.2015 No.04

Artificial insect diets are a crucial factor of many insect rearing systems for research purposes. Three different diets were prepared by formulating variations of the standard diet using various proportions of dried potato powder and wheat germ. The larvae were reared on these diets under long day conditions (25℃, 14L). Fitness parameters including larval development, immature survival, pupal weight, pupation, adult emergence were measured to evaluate the performance of Agrius convovuli. The percentage of pupation varied considerably, with significant differences among diets, on which a maximum pupation percentage of 95.0% was observed. The larvae reared from hatching on diet A completed larval development in 29.1d, and adult emergence occurred on day 17.6d. An analysis of variance showed significant differences among the three diets in the mean pupal weight. These results indicated that A. convovuli adapted well to the artificial diet A and successive rearing conditions. The diet A could serve as viable alternative to natural host plants for consecutive rearing of the insect. The successful development of the diet and rearing technique provides a very useful tool for refining hawk moth.

Analysis of psychological effects expected from educational pet insect rearing

( Soyun Kim ),( Haechul Park ),( Ingyun Park ),( Kwanho Park ),( Namjung Kim ),( Seonghyun Kim ) 한국잠사학회 2015 International Journal of Industrial Entomology Vol.31 No.1

In an effort to obtain foundational data required to evaluate the therapeutic effect of educational insect rearing, this study surveyed current educational pet insect rearing practices in Korea and examined the expected psychological effects from participating in the activity. Data were collected from those who visited the special insect exhibition in May 2013 using a self-reporting survey. The results indicated that 48.3% of the responders had experienced insect rearing, and that rhino and stag beetles were the most commonly reared insects. Most of the respondents (83.1%) reported they were not currently rearing any insects, which suggested that insect rearing tends to be a one-time experience. Expected psychological effects could be divided into emotional (56.3%) and cognitive (41.8%) effects, and these varied by age and gender. The differences in expected psychological effects were particularly clear between adults and adolescents, the latter of whom were the main participants in the activity. It is therefore necessary to develop standardized manuals and care programs for more diverse insect species with which to help keep up consumer interest in educational insect rearing. These efforts will help champion the psychotherapeutic effects of educational pet insect rearing and enhance its role as a learning aid.

Analysis of psychological effects expected from educational pet insect rearing

Kim, So Yun,Park, Hae Chul,Park, Ingyun,Park, Kwan Ho,Kim, Namjung,Kim, Seong Hyun Korean Society of Sericultural Science 2015 International Journal of Industrial Entomology Vol.31 No.1

In an effort to obtain foundational data required to evaluate the therapeutic effect of educational insect rearing, this study surveyed current educational pet insect rearing practices in Korea and examined the expected psychological effects from participating in the activity. Data were collected from those who visited the special insect exhibition in May 2013 using a self-reporting survey. The results indicated that 48.3% of the responders had experienced insect rearing, and that rhino and stag beetles were the most commonly reared insects. Most of the respondents (83.1%) reported they were not currently rearing any insects, which suggested that insect rearing tends to be a one-time experience. Expected psychological effects could be divided into emotional (56.3%) and cognitive (41.8%) effects, and these varied by age and gender. The differences in expected psychological effects were particularly clear between adults and adolescents, the latter of whom were the main participants in the activity. It is therefore necessary to develop standardized manuals and care programs for more diverse insect species with which to help keep up consumer interest in educational insect rearing. These efforts will help champion the psychotherapeutic effects of educational pet insect rearing and enhance its role as a learning aid.

Growth performance of the edible mealworm species, Tenebrio molitor (Coleoptera: Tenebrionidae) on diets composed of brewer's yeast

Kim, Seonghyun,Park, Ingyun,Park, Haechul,Lee, Heui Sam,Song, Jeong-Hun Korean Society of Sericultural Science 2019 International Journal of Industrial Entomology Vol.39 No.2

Yellow mealworms (Tenebrio molitor Linnaeus) are very promising insects for the food and feed industry. Because mealworms are in the spotlight as an alternative protein source in the future, it is necessary to develop efficient rearing techniques for mass production. To evaluate the effects of brewer's yeast (BY) on the growth of mealworms, Tenebrio molitor Linnaeus, the mealworms were fed with wheat bran (WB) diets containing different levels of BY (0, 10, 30, 50, and 70%). Larval survival, larval weight, development time, pupal weight and eclosion rate were monitored for 12 weeks. The results showed that mealworms fed on the diets containing 30% and 50% of BY have significantly higher weight gain, specific growth rate and daily weight gain, and lower larval duration than fed the control diet (100% WB) and other BY diets (10% and 70% BY). Larval survival on the diets containing 30% and 50% of BY was higher than on control diet. Pupal weight and eclosion rate were not significantly different among all diets. In conclusion, we suggest feeding the diet containing 30% of brewer's yeast with wheat bran in order to increase the production of mealworms.

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).

Effect of temperature on the development of the Common Grass Yellow, Eurema hecabe

Kim, Seonghyun,Park, Haechul,Park, Ingyun Korean Society of Sericultural Science 2015 International Journal of Industrial Entomology Vol.31 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 phenology models permit examination of the effects of temperature on the geographical distributions, population dynamics, and management of insects. Measurements of insect developmental and survival responses to temperature pose practical challenges that depend on the chosen modality, variability among individuals, and high mortality rates near the lower and upper threshold temperatures. Different temperature levels can significantly affect larval development of Eurema hecabe. The development of E. hecabe reared on leaves of Lespedeza cuneata was investigated at three temperature regimes (20, 25, and 30℃), a relative humidity of 60%, and a light:dark photoperiod of 14:10 h. The developmental time from larva to adult was 34.3, 20.6, and 17.9 d at temperatures of 20, 25, and 30℃, respectively. Pupal rate was 47.6%, 47.6%, and 61.9% at temperatures of 20, 25, and 30℃, respectively. The developmental threshold temperature estimated from larva to pupae was 8.1℃ with 381.7 degree-days. There is an increasing need for a standardized manual for rearing this butterfly species based on adequate knowledge of its ecology.

Effect of photoperiod and temperature on the reproductive responses of Protaetia brevitarsis

Kim, Seonghyun,Park, Hae-Chul,Kim, Namjung,Park, Ingyun Korean Society of Sericultural Science 2018 International Journal of Industrial Entomology Vol.37 No.2

In the present study, we investigated the effects of temperature and photoperiod on oviposition of Protaetia brevitarsis. The effects of long- and short-day cycles on oviposition and egg hatching of P. brevitarsis were investigated at different temperatures. Three male-female pairs were confined to oviposition chambers maintained at $20^{\circ}C$, $25^{\circ}C$, $30^{\circ}C$, and $35^{\circ}C$, with 16L:8D and 8L:16D photoperiod. Oviposition was observed at all temperatures. The total number of eggs laid per female was between 46.8 and 110.8, and the optimal temperature for oviposition and fertility was between $20^{\circ}C$ and $30^{\circ}C$. Furthermore, it was difficult for the eggs to hatch at $35^{\circ}C$. Fewer eggs were laid under short photoperiod than under long photoperiod at all temperatures. Hatching success was 93.5% at $20^{\circ}C$, 90.9% at $25^{\circ}C$, 71.5% at $30^{\circ}C$ and 37.3% at $35^{\circ}C$ under long-day(16L:8D) condition and Temperature had a strong effect on the time to hatching. Neither oviposition nor subsequent egg hatching was influenced by photoperiod and temperature. The information obtained will be useful for mass rearing P. brevitarsis.

Distribution of Mason Bees, Osmia spp. (Hymenotpera: Megachilidae) in Apple Orchard of Korea

Kyeongyong Lee,Sangbeom Lee,Ingyun Park,Pildon Kang,Hyungjoo Yoon 한국양봉학회 2015 한국양봉학회 학술대회 자료집 Vol.2015 No.3

Wolbachia infection in the Korean endemic firefly, Luciola unmunsana (Coleoptera: Lampyridae)

Gilsang Jeong,강태화,Haechul Park,,Wontae Kim,Youngcheol Choi,Kyeongyong Lee,Ingyun Park,Hasik Sim,Jonggill Kim 한국응용곤충학회 2009 Journal of Asia-Pacific Entomology Vol.12 No.1

Wolbachia is one of the most prevalent endosymbiontic bacteria of arthropods. The bacterium induces sex ratio distortions in various host insects through processes such as cytoplasmic incompatibility, feminization, male killing, and parthenogenesis. We investigated if the Korean endemic firefly, Luciola unmunsana was infected with the bacterium because the species had an abnormal sex ratio in the field. The results show that some individuals are infected with the bacterium. Phylogenetic analyses showed that the bacterial strain infecting the firefly is closely related to strains that infect phylogenetically distant hosts.

Effect of temperature on the development of the Common Grass Yellow, Eurema hecabe

( Seonghyun Kim ),( Haechul Park ),( Ingyun Park ) 한국잠사학회 2015 International Journal of Industrial Entomology Vol.31 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 phenology models permit examination of the effects of temperature on the geographical distributions, population dynamics, and management of insects. Measurements of insect developmental and survival responses to temperature pose practical challenges that depend on the chosen modality, variability among individuals, and high mortality rates near the lower and upper threshold temperatures. Different temperature levels can significantly affect larval development of Eurema hecabe. The development of E. hecabe reared on leaves of Lespedeza cuneata was investigated at three temperature regimes (20, 25, and 30℃), a relative humidity of 60%, and a light:dark photoperiod of 14:10 h. The developmental time from larva to adult was 34.3, 20.6, and 17.9 d at temperatures of 20, 25, and 30℃, respectively. Pupal rate was 47.6%, 47.6%, and 61.9% at temperatures of 20, 25, and 30℃, respectively. The developmental threshold temperature estimated from larva to pupae was 8.1℃ with 381.7 degree-days. There is an increasing need for a standardized manual for rearing this butterfly species based on adequate knowledge of its ecology.