Life history traits of five ground beetle (Coleoptera: Carabidae) species common in Honshu Island, Japan

  • Sonomi Shibuya Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan https://orcid.org/0000-0003-3951-1505
  • Keizi Kiritani
  • Kenji Fukuda Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan https://orcid.org/0000-0002-9980-3107
Keywords: Coleoptera, Carabidae, life-history, bioindicator, fecundity, feeding traits, flight activity, reproductive strategy

Abstract

Ground beetles have been used as bioindicators for monitoring environmental changes. However, to interpret monitoring results, we need further information on their life history traits. We selected Harpalus griseus, H. eous, H. tridens, Synuchus cycloderus and Carabus procerulus, species common in Honshu Island, Japan. We examined their hind wings, flight muscles, gut contents and ovarian eggs to understand their flight activity, feeding traits and reproductive strategies. The three Harpalus species showed wing length / body length ratios (W/B) of 0.88 - 0.99. In H. tridens, the proportion of individuals with flight muscles and caught in aerial traps was lower than in the other two. S. cycloderus was macropterous with a W/B ratio of 0.75, but no individuals were caught in aerial traps, and none possessed flight muscles. C. procerulus was brachypterous. The three Harpalus species fed mainly on seeds and partly on arthropods. S. cycloderus was a generalist predator. Gut contents of C. procerulus consisted of amorphous fluid, suggesting extra-oral digestion. Egg type was categorized by the number and size of ovarian eggs. S. cycloderus had many-small eggs, while the other four had few but large eggs.

Published
2020-12-28
How to Cite
ShibuyaS., KiritaniK., & FukudaK. (2020). Life history traits of five ground beetle (Coleoptera: Carabidae) species common in Honshu Island, Japan. Acta Zoologica Academiae Scientiarum Hungaricae, 66(Suppl.), 185-198. https://doi.org/10.17109/AZH.66.Suppl.185.2020