Ecological divergence among morphologically and genetically related Asphondylia species (Diptera: Cecidomyiidae), with new life history data for three congeners including the Alpinia fruit gall midge

Junichi Yukawa, Makoto Tokuda, Nami Uechi, Keiji Yasuda, Tomoko Ganaha-Kikumura, Kazunori Matsuo, Yuko Shimizu, Daisuke Yamaguchi

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

Ecological data is crucial for determining the degree of reproductive isolation among closely related species, and in identifying the factors that have produced this divergence. We studied life history traits for three Asphondylia (Diptera: Cecidomyiidae) species that induce fruit galls either on Alpinia, Ligustrum or Aucuba, and we compared the traits with those published for three other closely related Japanese Asphondylia species. We found that the six species were significantly differentiated in important life history traits, such as host range, voltinism, lower developmental threshold temperature, thermal constant and diapausing season. The data indicate that divergence in the assessed life history traits evolves before morphological divergence, and such ecological divergence could strengthen isolating barriers among the taxa. We present scenarios on how host range expansion, host plant shift and host organ shift for galling initiate the early stages of speciation. We also highlight the importance of ecological data in identifying cryptic species. Specifically, we confirm that Alpinia intermedia (Zingiberaceae) is not an autumn–spring host of the soybean pod gall midge Asphondylia yushimai based on many differences in the life history traits between the Alpinia fruit gall midge Asphondylia sp. and A. yushimai.

本文言語英語
ページ(範囲)437-449
ページ数13
ジャーナルEntomological Science
22
4
DOI
出版ステータス出版済み - 12 1 2019

All Science Journal Classification (ASJC) codes

  • 生態、進化、行動および分類学
  • 昆虫科学

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