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Ecological Research

, Volume 24, Issue 3, pp 705–709 | Cite as

On the coexistence of three predatory stonefly species in a central Japanese stream

  • Motomi Genkai-Kato
  • Hitoshi Miyasaka
Note and Comment

Abstract

Three large-bodied stonefly species (Paragnetina tinctipennis, Oyamia lugubris, and Kamimuria tibialis) coexist in a central Japanese stream. These species have been classified as predators. Here we study their microhabitat use while focusing on the physical environments, physiological activity, and food resources. We show that Paragnetina uses a niche with faster currents than other species throughout the year. Oyamia has seasonal flexibility in microhabitat preference, physiological activity, and food resources. Kamimuria is a rather stable species, independent of seasonal patterns.

Keywords

Coexistence Current Diet Predators Stonefly 

Notes

Acknowledgments

We thank H. Mitsuhashi, K. Nozaki, and Y. Kohmatsu for their assistance in field surveys and species identification. We also thank Jeremy Monroe for comments on the manuscript. This research was partly supported by the Foundation of River and Watershed Environmental Management of Japan, and the Japan Society for the Promotion of Science.

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Copyright information

© The Ecological Society of Japan 2008

Authors and Affiliations

  1. 1.Kiso Biological StationKyoto UniversityNaganoJapan
  2. 2.Center for Ecological ResearchKyoto UniversityOtsuJapan

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