Sexual differences in the pattern of spatial variation in the brachypterous grasshopper Podisma sapporensis (Orthoptera: Podisminae)

Haruki Tatsuta, S. Akimoto

研究成果: Contribution to journalArticle査読

13 被引用数 (Scopus)

抄録

We examined sexual dimorphism and its geographical pattern in 10 morphological characters, including the genitalia, in the brachypterous grasshopper Podisma sapporensis. Conspicuous sexual dimorphism was observed in all characters. In nine characters, variance in females was significantly greater than in males. Sexual differences among populations varied more in the genitalia than in other characters. Spatial autocorrelation analysis demonstrated that there was no geographical trend in the female genitalia, whereas significant autocorrelation existed in the male genitalia. These results suggest that cryptic female choice is responsible for the autocorrelation pattern of the male genitalia, while random genetic drift or a larger effect of environment has created the geographical pattern of the female genitalia.

本文言語英語
ページ(範囲)1450-1455
ページ数6
ジャーナルCanadian Journal of Zoology
76
8
DOI
出版ステータス出版済み - 8 1998
外部発表はい

All Science Journal Classification (ASJC) codes

  • 生態、進化、行動および分類学
  • 動物科学および動物学

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