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Title: Diapause in Univoltine and Semivoltine Life Cycles
Authors: Numata, Hideharu  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-3786-0701 (unconfirmed)
Shintani, Yoshinori
Author's alias: 沼田, 英治
Keywords: bet-hedging
circannual rhythm
climate warming
phenotypic plasticity
prolonged diapause
seasonal adaptation
Issue Date: Jan-2023
Publisher: Annual Reviews
Journal title: Annual Review of Entomology
Volume: 68
Start page: 257
End page: 276
Abstract: Although it is generally more adaptive for insects to produce additional generations than to have longer life cycles, some insects produce one or fewer generations per year (univoltine or semivoltine life cycles, respectively). Some insects with the potential to produce multiple generations per year produce a univoltine life cycle in response to environmental conditions. Obligatory univoltine insects have a single long diapause or multiple diapauses in different seasons. Semivoltine insects have multiple diapauses in different years, a prolonged diapause for more than a year, or diapause controlled by a circannual rhythm. Diapause in these insects greatly varies among species both in the physiological mechanism and in the evolutionary background, and there is no general rule defining it. In this review, we survey the physiological control of univoltine and semivoltine insects’ diapause and discuss the adaptive significance of the long life cycles. Although constraints such as slow development are sometimes responsible for these life cycles, the benefits of these life cycles can be explained by bet-hedging in many cases. We also discuss the effect of climate warming on these life cycles as a future area of research.
Rights: Copyright © 2023 by the author(s).
This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See credit lines of images or other third-party material in this article for license information
URI: http://hdl.handle.net/2433/284676
DOI(Published Version): 10.1146/annurev-ento-120220-101047
PubMed ID: 36198404
Appears in Collections:Journal Articles

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