Journal of Comparative Physiology B

, Volume 162, Issue 3, pp 203–208 | Cite as

Energy storage during reproductive diapause in the Drosophila melanogaster species group

  • Takashi Ohtsu
  • Masahito T. Kimura
  • Samuel H. Hori
Article

Summary

Temperate species of the Drosophila melanogaster group enter reproductive diapause for overwintering in response to short daylength. During the prediapause period they accumulate triacylglycerols, but not glycogen, as energy resources. The capacity for storing triacylglycerols differs between species, and appears to be closely correlated with diapause and cold-hardiness; cool-temperate species, such as those of the auraria species complex, which enter a deep diapause and are highly cold-hardy, accumulate larger quantities of triacylglycerols than warm-temperate species, such as D. rufa and D. lutescens, which enter a weak diapause and are less cold-hardy. Among the cool-temperate spcies, D. subauraria occurs at a higher latitude and has the greatest capacity for accumulating triacylglycerols. A subtropical species, D. takahashii, which has no diapause in nature and is not cold-hardy, is unable to store the same quantities of triacylglycerols as temperate species.

Key words

Triacylglycerols Glycogen Reproductive diapause Overwintering Drosophila 

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Takashi Ohtsu
    • 1
  • Masahito T. Kimura
    • 1
  • Samuel H. Hori
    • 1
  1. 1.Department of Zoology, Faculty of ScienceHokkaido UniversitySapporo, HokkaidoJapan

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