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Local monophagy and between-site diversity in host use in the European swallowtail butterfly, Papilio machaon

Wiklund, Christer; Norén, Karin; Ryman, Nils and Friberg, Magne LU (2018) In Biological Journal of the Linnean Society 123(1). p.179-190
Abstract

The majority of herbivorous insects are specialized in host use. Even among insects that use many hosts, local specialization is common with a single host plant often being used in any given locality. Here, we establish such a pattern for the European swallowtail butterfly, Papilio machaon. We sampled larvae on five different natural hosts at eight sites in Sweden, each locality showing local monophagy. We ask what is the underlying reason for this pattern, (1) local genetic adaptation with each population being genetically adapted to the local host, (2) Hopkins' host selection principle with adult females retaining a memory of the larval host and preferring to oviposit on that plant, or (3) the preference/performance hypothesis which... (More)

The majority of herbivorous insects are specialized in host use. Even among insects that use many hosts, local specialization is common with a single host plant often being used in any given locality. Here, we establish such a pattern for the European swallowtail butterfly, Papilio machaon. We sampled larvae on five different natural hosts at eight sites in Sweden, each locality showing local monophagy. We ask what is the underlying reason for this pattern, (1) local genetic adaptation with each population being genetically adapted to the local host, (2) Hopkins' host selection principle with adult females retaining a memory of the larval host and preferring to oviposit on that plant, or (3) the preference/performance hypothesis which posits that females should oviposit on the local plant(s) on which larval fitness is highest. Allozyme analysis supported a relatively low level of population structuring, and oviposition preference tests showed that females from all sites had similar preference rankings of the five host plants. Hence, there was no support for local genetic adaptation or Hopkins' host selection principle. Instead, the results are consistent with the preference/performance hypothesis with local monophagy probably being implemented by a preference ranking of plants in accordance with larval performance.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Adult preference, Allozymes, Host ranking, Larval performance, Local specialization, Oviposition
in
Biological Journal of the Linnean Society
volume
123
issue
1
pages
12 pages
publisher
Linnean Society of London
external identifiers
  • scopus:85040613411
ISSN
0024-4066
DOI
10.1093/biolinnean/blx115
language
English
LU publication?
yes
id
e1255326-4a90-452b-8b29-460c693c09cb
date added to LUP
2018-01-30 13:47:06
date last changed
2018-01-30 13:47:06
@article{e1255326-4a90-452b-8b29-460c693c09cb,
  abstract     = {<p>The majority of herbivorous insects are specialized in host use. Even among insects that use many hosts, local specialization is common with a single host plant often being used in any given locality. Here, we establish such a pattern for the European swallowtail butterfly, Papilio machaon. We sampled larvae on five different natural hosts at eight sites in Sweden, each locality showing local monophagy. We ask what is the underlying reason for this pattern, (1) local genetic adaptation with each population being genetically adapted to the local host, (2) Hopkins' host selection principle with adult females retaining a memory of the larval host and preferring to oviposit on that plant, or (3) the preference/performance hypothesis which posits that females should oviposit on the local plant(s) on which larval fitness is highest. Allozyme analysis supported a relatively low level of population structuring, and oviposition preference tests showed that females from all sites had similar preference rankings of the five host plants. Hence, there was no support for local genetic adaptation or Hopkins' host selection principle. Instead, the results are consistent with the preference/performance hypothesis with local monophagy probably being implemented by a preference ranking of plants in accordance with larval performance.</p>},
  articleno    = {blx115},
  author       = {Wiklund, Christer and Norén, Karin and Ryman, Nils and Friberg, Magne},
  issn         = {0024-4066},
  keyword      = {Adult preference,Allozymes,Host ranking,Larval performance,Local specialization,Oviposition},
  language     = {eng},
  month        = {01},
  number       = {1},
  pages        = {179--190},
  publisher    = {Linnean Society of London},
  series       = {Biological Journal of the Linnean Society},
  title        = {Local monophagy and between-site diversity in host use in the European swallowtail butterfly, Papilio machaon},
  url          = {http://dx.doi.org/10.1093/biolinnean/blx115},
  volume       = {123},
  year         = {2018},
}