Change search
ReferencesLink to record
Permanent link

Direct link
Latitudinal differences in diapause related photoperiodic responses of European Colorado potato beetles (Leptinotarsa decemlineata)
Stockholm University, Faculty of Science, Department of Zoology. University of Jyväskylä, Finland.
2015 (English)In: Evolutionary Ecology, ISSN 0269-7653, E-ISSN 1573-8477, Vol. 29, no 2, 269-282 p.Article in journal (Refereed) Published
Abstract [en]

Many organisms use photoperiodic cues to assess seasonal progression and pace their phenology. As photoperiod correlates with latitude, range expansions in seasonal environments may require re-synchronization of phenology and life-history traits with novel season length. Adaptive resynchronization takes time, and hence might be one factor explaining why range expansion to higher latitudes often is slow. Studies investigating latitudinal clines in photoperiodic traits often focus on species or populations which are well established. However, studying organisms which are in the process of expanding their range can provide valuable information on the evolutionary ecological mechanisms driving the adaptive synchronization to seasonal environments. The Colorado potato beetle, Leptinotarsa decemlineata, is a pest of potato, which rapidly has spread towards higher latitudes. We studied whether beetles from six European populations along a latitudinal axis are synchronized with their local photoperiodic environmental conditions. Variation in critical photoperiod (when 50 % of individuals make the decision to overwinter), diapause incidence, burrowing age for diapause and resurfacing behaviour were investigated by maintaining beetles under six photoperiods. The beetles showed a clear latitudinal pattern in diapause incidence and burrowing age for diapause but not in critical photoperiod. Resurfacing behaviour of burrowed beetles increased with the length of the photoperiod, which through unsynchronized overwintering behaviour could lead to high overwintering mortality. Thus, while synchronization of diapause preparation with local photoperiodic conditions can be one reason explaining the success of L. decemlineata in expanding to higher latitudes, further northward range expansion could be constrained by inherent difficulties to initiate overwintering under very long photoperiods.

Place, publisher, year, edition, pages
2015. Vol. 29, no 2, 269-282 p.
Keyword [en]
Coleoptera, Invasion, Local adaptation, Phenology, Rapid adaptation, Temperate species
National Category
Biological Sciences Earth and Related Environmental Sciences
URN: urn:nbn:se:su:diva-116001DOI: 10.1007/s10682-015-9755-xISI: 000349964700005OAI: diva2:801868


Available from: 2015-04-10 Created: 2015-04-08 Last updated: 2015-04-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Lehmann, Philipp
By organisation
Department of Zoology
In the same journal
Evolutionary Ecology
Biological SciencesEarth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 63 hits
ReferencesLink to record
Permanent link

Direct link