DOI QR코드

DOI QR Code

Variation in the reproductive rate of Trypoxylus dichotomus (Dymastinae: Sacarabaeidae: Coleoptera) by partition

  • Seo, Won-Jun (Department of Agriculture & Life Industry Policy Division, Daejeon Insect Eco Center) ;
  • Park, Sang-Eun (Department of Agricultural Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Youn, Young-Nam (Department of Agricultural Biology, College of Agriculture and Life Sciences, Chungnam National University)
  • Received : 2020.08.25
  • Accepted : 2020.10.16
  • Published : 2020.12.01

Abstract

Trypoxylus dichotomus is highly utilized in the domestic insect industry and bred at many farms nationwide. Recently, the number of farmers has been increasing due to the expansion of its use in food and medicine. However, the traditional breeding methods have high economic costs, which include relatively large breeding boxes, large amounts of sawdust and a 2 to 1 ratio (or higher) of female to male. Thus, it is essential to develop a cost-effective breeding method. In this study, a breeding cage with a partition was designed and used to investigate the reproduction rate of T. dichotomus with only a single pair of male and female insect. According to the investigation, the average number of eggs laid in the un-partitioned breeding cage was 93.6, and 121.3 eggs were laid in the partitioned breeding cage. This result shows that T. dichotomus lays more eggs in the partitioned breeding cage rather than in the un-partitioned breeding cage. In addition, it was found that T. dichotomus tends to lay more eggs in compressed sawdust, which was harder than the common fermented sawdust. Through a wind-tunnel assay, it was shown that the ovipositing female recognizes the eggs and avoids them to disperse their eggs elsewhere. These results indicate that the partitioned breeding cage may increase the hardness of the sawdust, restrict the adult's movement and provide a new place for oviposition for the female, and therefore results in an increased reproduction rate with less cost.

Keywords

Acknowledgement

본 연구는 2019년도 iPET 농생명산업기술개발사업 "곤충자원을 이용한 6차 산업화 모델개발 및 현장적용(316027-05-4-HD050)"에 의하여 수행되었으며 이에 감사를 드립니다.

References

  1. Cho PS. 1969. Illustrated encyclopedia of fauna & Flora of Korea, VOL. 10. Insecta (II). pp. 693-694. Samhwa, Seoul, Korea. [in Korean]
  2. Hwang SMR. 2011. The dynastini of the world (Coleoptera: Scarabaeidae: Dynastinae). Nature & Ecology (Academic series) 4. Nature & Ecology, Seoul, Korea. [in Korean]
  3. Kim HG, Kang KH. 2005. Bionomical characteristic of Allomyrina dichotoma. Korean Journal of Applied Entomology 44:207-212. [in Korean]
  4. Kim HG, Kang KH, Hwang CY. 2005. Effect of some environmental factors on oviposition and developmental characteristic of Protaetia brevitarsis and Allomyrina dichotoma. Korean Journal of Applied Entomology 44:283-286. [in Korean]
  5. Kim JI. 1998. Insects' life in Korea (III) Coleoptera. p. 55. Korea University, Seoul, Korea. [in Korean]
  6. Kim YJ, Han HS, Park YG. 2015. The plant for activation of insect industry. p. 148. Korea Rural Economic Institute Research Report R758. [in Korean]
  7. Park GT, Lee HY, Lee JS, Kim CH, Han HR, Kim HG, Jung MN. 2005. Development of mass-rearing technique of Allomyrina dichotoma as a new income source of farmers. Ministry of agriculture, food and rural affairs final research report. Kangwon University, Chuncheon, Korea. [in Korean]
  8. Park SE, Youn YN. 2019. Gene functional analysis of Harmonia axyridis by in vitro transcription. Korean Journal of Agricultural Science. doi.org/10.7744/kjoas.20190031 [in Korean]
  9. RDA (Rural Development Administration). 2015. Insect industry survey report in 2015. RDA, Jeonju, Korea. [in Korean]
  10. RDA (Rural Development Administration). 2016. Rearing standards and specifications for beneficial insect. p. 142. RDA, Jeonju, Korea. [in Korean]
  11. Zhang ZL. 1984. Economic insect fauna of China. Fasc. 28. Coleoptera: larva of Scarabaeidae. p. 34. Science Press, Beijing, China. [in Chinese]