Swarming and mating behavior in Ephemera orientalis Mclachlan, 1875 (Ephemeroptera: Ephemeridae) with morphological analyses

Takahisa Miyatake, Taichi Suge, Shunsuke Suzaki, Shintaro Tanabe, Ryo Ishihara, Kentarou Matsumura

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Swarming and mating behaviors of a mayfly species, Ephemera orientalis Mclachlan, 1875 were observed in 2015, 2016, and 2018 at a river bank of the Asahi River, Japan. Males started to make swarms between late April and middle May in 2016 and 2018. The numbers of mated pairs in a swarm correlated with the numbers of flying males in a swarm in 2016 and 2018. Swarms were formed during a limited period at dusk most probably because that interval is free from natural enemies. Males competed with each other to copulate with females in swarms. We clarified the function of the forelegs of males, which are significantly longer than those of females. Males used their forelegs to hold up a female from below. Besides forelegs, males have longer tails than females. We will discuss why sexual differences are found in these traits. Our results represent the first observation of swarm mating behavior in E. orientalis.

Original languageEnglish
Pages (from-to)376-382
Number of pages7
JournalJournal of Asia-Pacific Entomology
Volume24
Issue number1
DOIs
Publication statusPublished - Apr 2021

Keywords

  • Aquatic insect
  • Copulation
  • Emergence
  • Foreleg
  • Mayfly
  • Swarm

ASJC Scopus subject areas

  • Insect Science

Fingerprint

Dive into the research topics of 'Swarming and mating behavior in Ephemera orientalis Mclachlan, 1875 (Ephemeroptera: Ephemeridae) with morphological analyses'. Together they form a unique fingerprint.

Cite this