Is a change in juvenile hormone sensitivity involved in range expansion in an invasive beetle?
Lehmann, P., Lyytinen, A., Piiroinen, S., & Lindström, L. (2015). Is a change in juvenile hormone sensitivity involved in range expansion in an invasive beetle?. Frontiers in Zoology, 12(20). https://doi.org/10.1186/s12983-015-0113-1
Julkaistu sarjassa
Frontiers in ZoologyPäivämäärä
2015Oppiaine
Ekologia ja evoluutiobiologiaBiologisten vuorovaikutusten huippututkimusyksikköEcology and Evolutionary BiologyCentre of Excellence in Biological Interactions ResearchTekijänoikeudet
© 2015 Lehmann et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0
International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and
reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to
the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver
(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
Introduction: It has been suggested that rapid range expansion could proceed through evolution in the
endocrinological machinery controlling life-history switches. Based on this we tested whether the Colorado
potato beetle, Leptinotarsa decemlineata, which has rapidly expanded its range across latitudinal regions in
Europe, and shows photoperiodic adaptation in overwintering initiation, has different sensitivities to juvenile
hormone (JH) manipulation along a latitudinal gradient.
Results: A factorial experiment where beetles were reared either under a long or short day photoperiod was
performed. Hormone levels were manipulated by topical applications. An allatostatin mimic, H17, was used to
decrease and a juvenile hormone III analogue, pyriproxyfen, was used to increase the hormone levels. The
effects of photoperiod and hormone manipulations on fecundity and overwintering related burrowing were
monitored. Application of H17 decreased fecundity but did not induce overwintering related burrowing.
Manipulation with pyriproxyfen increased fecundity and delayed burrowing. While small population-dependent
differences in responsiveness to the topical application treatments were observed in fecundity, none were
seen in overwintering related burrowing.
Conclusions: The results indicate that the rapid photoperiodic adaptation manifested in several life-history
and physiological traits in L. decemlineata in Europe is unlikely a result of population dependent differences in
JH III sensitivity. While other endocrine factors cannot be ruled out, more likely mechanisms could be genetic
changes in upstream elements, such as the photoperiodic clock or the insulin signaling pathway.
...
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1742-9994Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/24874956
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Ellei muuten mainita, aineiston lisenssi on © 2015 Lehmann et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0
International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and
reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to
the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver
(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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