A Note on the Fertilization Success of the First Male during Successive Mating in the Japanese Rhinoceros Beetle Trypoxylus dichotomus septentrionalis

Masaaki Harada, Naoyuki Fujiyama

研究成果: Article査読

1 被引用数 (Scopus)

抄録

It is empirically well known that adults of both sexes of the Japanese rhinoceros beetle Trypoxylus dichotomus septentrionalis (Kôno) copulate repeatedly under laboratory conditions. However, details of the fertilization success of respective males involved in multiple mating are unknown. To determine the degree of sperm displacement in successive mating in this beetle species, we conducted a male-swapping crossing experiment under laboratory conditions. A mutant line with white compound eyes in the adult stage, of which the white-eye state shows simple recessive Mendelian inheritance to the wild type regardless of sex, was employed in the experiment. Individual adult female mutants were consecutively mated with a mutant and a wild-type adult male in a different order. Although the sample sizes of our experiment were limited, the eye color of all adults of the next generation was inherited from the first-mated males. Therefore, our results strongly suggest that the degree of sperm displacement is very low or absent, or even that sperm transfer does not occur in secondary matings, in this beetle species.

本文言語English
ページ(範囲)231-236
ページ数6
ジャーナルJournal of Insect Behavior
30
3
DOI
出版ステータスPublished - 2017 5 1

ASJC Scopus subject areas

  • 生態、進化、行動および分類学
  • 昆虫科学

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