Proceedings of the National Institute of Ecology of the Republic of Korea

National Institute of Ecology (국립생태원)
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Hibernation Durations Affect Life-history Traits of Gymnopleurus mopsus (Coleoptera: Scarabaeidae), an Endangered Dung Beetle

  • Kim, Mannyun (Division of Restoration Research, National Institute of Ecology) ;
  • Kim, Hwang (Division of Restoration Research, National Institute of Ecology) ;
  • Choi, Ye-Jin (Division of Restoration Research, National Institute of Ecology) ;
  • Koh, Min-Hee (Division of Restoration Research, National Institute of Ecology) ;
  • Jang, Keum Hee (Division of Restoration Research, National Institute of Ecology) ;
  • Kim, Young-Joong (Division of Restoration Research, National Institute of Ecology)
  • Received : 2021.06.30
  • Accepted : 2021.10.13
  • Published : 2021.11.01
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Abstract

The dung beetle, Gymnopleurus mopsus (Coleoptera: Scarabaeidae), is one of endangered species in South Korea. It was last recorded in 1971. To restore this species, we introduced G. mopsus populations from eastern and southern regions of Mongolia in July 2019 and August 2019, respectively. One of the main tasks for the restoration of endangered insects is to develop breeding techniques to eventually incorporate these insects into the restoration system. In a series of laboratory experiments, we investigated effects of short-term hibernation periods on life-history traits of G. mopsus. Adult G. mopsus that had hibernated for 30, 60, and 90 days had lower survival rates than adults that had hibernated for 120 days. We also compared developmental time of these four experimental groups and found a significant difference in the egg - phase. However, the duration of hibernation did not affect the fecundity, brood-ball size, or body size of F1 adults. Follow-up studies are currently being conducted to further investigate the effect of a short-term hibernation period on population growth of G. mopsus under laboratory conditions.

Keywords

Acknowledgement

We would like to thank Dr. Badamdorj for supporting the introduction of dung beetles. This study was supported by a research grant from the Restoration Center for Endangered Species funded by National Institute of Ecology, Republic of Korea.

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