Role of larval host plants in the climate-driven range expansion of the butterfly Polygonia c-album

Author
Braschler Brigitte
Hill Jane K.
Keywords
Abstract

H. lupulus at all temperatures. Adult P. c-album can either enter diapause or develop directly and higher temperatures resulted in more directly developing adults, but lower survival rates (particularly on the original host H. lupulus) and smaller adult size. * 4Adult flight morphology of wild-caught individuals from range margin populations appeared to be related to increased dispersal potential relative to core populations. However, there was no difference in laboratory reared individuals, and conflicting results were obtained for different measures of flight morphology in relation to larval host plant and temperature effects, making conclusions about dispersal potential difficult. * 5Current range expansion of P. c-album is associated with the exploitation of more widespread host plants on which performance is improved. This study demonstrates how polyphagy may enhance the ability of species to track climate change. Our findings suggest that observed differences in climate-driven range shifts of generalist vs. specialist species may increase in the future and are likely to lead to greatly altered community composition.

Year of Publication
2007
Journal
Journal of Animal Ecology
Volume
76
Issue
3
Number of Pages
415-423
Date Published
2007
ISBN Number
1365-2656
URL
Scheme
Research themes
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