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Vestiges of an ancestral host plant: preference and performance in the butterfly Polygonia faunus and its sister species P. c-album

Nylin, Sören (author)
Stockholms universitet,Avdelningen för zoologisk ekologi
Söderlind, Lina (author)
Stockholms universitet,Avdelningen för zoologisk ekologi
Gamberale-Stille, Gabriella (author)
Stockholms universitet,Avdelningen för etologi
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Audusseau, Hélène (author)
Stockholms universitet,Avdelningen för zoologisk ekologi
Celorio-Mancera, Maria de la Paz, 1978- (author)
Stockholms universitet,Avdelningen för zoologisk ekologi
Janz, Niklas (author)
Stockholms universitet,Avdelningen för zoologisk ekologi
Sperling, Felix A. H. (author)
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 (creator_code:org_t)
2015-03-12
2015
English.
In: Ecological Entomology. - : Wiley. - 0307-6946 .- 1365-2311. ; 40:3, s. 307-315
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 1. In the study of the evolution of insect-host plant interactions, important information is provided by host ranking correspondences among female preference, offspring preference, and offspring performance. Here, we contrast such patterns in two polyphagous sister species in the butterfly family Nymphalidae, the Nearctic Polygonia faunus, and the Palearctic P. c-album. 2. These two species have similar host ranges, but according to the literature P. faunus does not use the ancestral host plant clade-the urticalean rosids'. Comparisons of the species can thus test the effects of a change in insect-plant associations over a long time scale. Cage experiments confirmed that P. faunus females avoid laying eggs on Urtica dioica (the preferred host of P. c-album), instead preferring Salix, Betula, and Ribes.3. However, newly hatched larvae of both species readily accept and grow well on U. dioica, supporting the general theory that evolutionary changes in host range are initiated through shifts in female host preferences, whereas larvae are more conservative and also can retain the capacity to perform well on ancestral hosts over long time spans.4. Similar rankings of host plants among female preference, offspring preference, and offspring performance were observed in P. c-album but not in P. faunus. This is probably a result of vestiges of larval adaptations to the lost ancestral host taxon in the latter species. 5. Female and larval preferences seem to be largely free to evolve independently, and consequently larval preferences warrant more attention.

Subject headings

NATURVETENSKAP  -- Biologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences (hsv//eng)

Keyword

Adaptation
constraints
host choice
insect behaviour
oviposition
zoologisk ekologi
Animal Ecology

Publication and Content Type

ref (subject category)
art (subject category)

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