Change search
ReferencesLink to record
Permanent link

Direct link
Decoupling of female host plant preference and offspring performance in relative specialist and generalist butterflies
Stockholm University, Faculty of Science, Department of Zoology.
Stockholm University, Faculty of Science, Department of Zoology.
Number of Authors: 3
2015 (English)In: Oecologia, ISSN 0029-8549, E-ISSN 1432-1939, Vol. 178, no 4, 1181-1192 p.Article in journal (Refereed) Published
Abstract [en]

The preference-performance hypothesis posits that the host plant range of plant-feeding insects is ultimately limited by larval costs associated with feeding on multiple resources, and that female egg-laying preferences evolve in response to these costs. The trade-off of either using few host plant species and being a strong competitor on them due to effective utilization or using a wide host plant range but being a poor competitor is further predicted to result in host plant specialization. This follows under the hypothesis that both females and offspring are ultimately favoured by utilizing only the most suitable host(s). We develop an experimental approach to identify such trade-offs, i.e. larval costs associated with being a host generalist, and apply a suite of experiments to two sympatric and syntopic populations of the closely related butterflies Pieris napi and Pieris rapae. These butterflies show variation in their level of host specialization, which allowed comparisons between more and less specialized species and between families within species. Our results show that, first, the link between female host preference and offspring performance was not significantly stronger in the specialist compared to the generalist species. Second, the offspring of the host plant specialist did not outperform the offspring of the generalist on the former's most preferred host plant species. Finally, the more generalized species, or families within species, did not show higher survival or consistently higher growth rates than the specialists on the less preferred plants. Thus, the preference and performance traits appear to evolve as largely separated units.

Place, publisher, year, edition, pages
2015. Vol. 178, no 4, 1181-1192 p.
Keyword [en]
Egg-laying, Growth rate, Host plant rank order, Life history trade-offs, Specialization
National Category
Biological Sciences
URN: urn:nbn:se:su:diva-119538DOI: 10.1007/s00442-015-3286-6ISI: 000358089400018OAI: diva2:847514
Available from: 2015-08-20 Created: 2015-08-17 Last updated: 2015-08-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Posledovich, DianaWiklund, Christer
By organisation
Department of Zoology
In the same journal
Biological 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: 62 hits
ReferencesLink to record
Permanent link

Direct link