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Author:
Friberg, Magne (Stockholm University, Faculty of Science, Department of Zoology)
Wiklund, Christer (Stockholm University, Faculty of Science, Department of Zoology)
Title:
Host plant induced larval decision-making in a habitat/host plant generalist butterfly
Department:
Stockholm University, Faculty of Science, Department of Zoology
Publication type:
Article in journal (Refereed)
Language:
English
Status:
Published
In:
Ecology(ISSN 0012-9658)(EISSN 1939-9170)
Volume:
91
Pages:
15-21
Year of publ.:
2010
URI:
urn:nbn:se:su:diva-30791
Permanent link:
http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-30791
Keywords(en) :
Habitat, host plant, generalist, specialist, phenotypic plasticity, adaptation, Lepidoptera: Leptidea, polyspecialist, growth rate, development, life history, Lathyrus
Abstract(en) :

Phenotypic plasticity can be a passive response to fluctuating environmental conditions or an active and presumably adaptive (evolved) response selected for in different environments. Here we ask if the larval decision to enter diapause when reared on a host plant associated with a colder habitat is an active or a passive response to host plant quality or suitability. We compare plasticity in larval propensity to enter diapause of the habitat generalist butterfly Leptidea sinapis and the meadow specialist Leptidea reali in a range of temperatures and long daylength on a forest plant, Lathyrus linifolius, and a meadow-associated plant, Lathyrus pratensis. The warmer meadow habitat promotes direct development whereas the colder forest habitat is conducive to diapause. Larvae of L. sinapis had a higher propensity to enter diapause when reared on the forest plant L. linifolius across all temperatures. Conversely, the propensity of L. reali to enter diapause was consistently lower and did not differ between host plants. Larval growth rates were similar between and within butterfly species and between host plants. Hence, we conclude that larval pathway decision-making in L. sinapis is an active response mediated by information from their host plants.

Research funder:
Swedish Research Council
Available from:
2009-10-27
Created:
2009-10-27
Last updated:
2014-10-13
Statistics:
105 hits