Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Context dependency of plant – animal interactions
Stockholm University, Faculty of Science, Department of Ecology, Environment and Plant Sciences.
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The strength and direction of interactions between organisms vary spatially across the landscape. Traditionally, the focus has been on how trait variation affects the interactions between species. However, differences in abiotic and biotic environmental factors may also alter the distribution, phenology and behavior of the interacting species. To be able to understand why an interaction varies across the landscape, the effects of trait variation has to be separated from the effects of the environmental context. In this thesis, I try to separate the effects of context and trait differences on plant resistance against herbivory, through experimental and observational studies conducted with two cytotypes of the perennial herb Cardamine pratensis and its main herbivore, Anthocharis cardamines.

The results show that differences in plant resistance against oviposition under controlled conditions were mainly mediated by flower size; larger flowers were more attractive to the female butterfly. However, among-populations differences in oviposition under natural conditions were not related to the resistance observed under controlled conditions, or to ploidy type, flowering phenology or plant size. Within populations under natural conditions the oviposition patterns by A. cardamines was affected by the plant traits plant size and flowering phenology.

The result of this thesis shows that among-population differences in intensity of plant-herbivore interactions were caused by differences in environmental context rather than by herbivore preferences for any phenotypic plant traits, while host plant selection within population was based on plant traits. This suggests that biotic and biotic context can have important effects on the intensity of plant-herbivore interactions. Although genetic traits influenced the outcome of the interaction within populations, it was the environmental context of the populations that determined largely if the interaction took place or not.

Place, publisher, year, edition, pages
Stockholm: Department of Ecology, Environment and Plant Sciences, Stockholm University , 2014. , 43 p.
Keyword [en]
Anthocharis cardamines, attack intensity, Cardamine pratensis, cytotype, herbivory, larval fitness, oviposition, phenology, plant-animal interactions, plant resistance, plant tolerance, polyploidy, spatial variation, trait variation
National Category
Ecology Botany
Research subject
Plant Ecology
Identifiers
URN: urn:nbn:se:su:diva-101067ISBN: 978-91-7447-857-0 (print)OAI: oai:DiVA.org:su-101067DiVA: diva2:698650
Public defence
2014-04-08, föreläsningssalen, Institutionen för ekologi, miljö och botanik, Lilla Frescativägen 5, Stockholm, 10:00 (English)
Opponent
Supervisors
Funder
Swedish Research Council
Note

At the time of the doctoral defence the following papers were unpublished and had  a status as follows: Paper 2: Manuscript in review in Plos One; Paper 3: Manuscript in review in Ecological Entomology; Paper 4: Manuscript

Available from: 2014-03-17 Created: 2014-02-24 Last updated: 2014-03-11Bibliographically approved
List of papers
1. Context-dependent resistance against butterfly herbivory in a polyploid herb
Open this publication in new window or tab >>Context-dependent resistance against butterfly herbivory in a polyploid herb
2014 (English)In: Oecologia, ISSN 0029-8549, E-ISSN 1432-1939, Vol. 174, no 4, 1265-1272 p.Article in journal (Refereed) Published
Abstract [en]

Spatial variation in biotic interactions and natural selection are fundamental parts of natural systems, and can be driven by differences in both trait distributions and the local environmental context of the interaction. Most studies of plant–animal interactions have been performed only in natural settings, making it difficult to disentangle the effects of traits and context. To assess the relative importance of trait differences and environmental context for among-population variation in plant resistance to herbivory, we compared oviposition by the butterfly Anthocharis cardamines on two ploidy types of the herb Cardamine pratensis under experimentally controlled conditions with oviposition in natural populations. Under controlled conditions, plants from octoploid populations were significantly more preferred than plants from tetraploid populations. This difference was largely mediated by differences in flower size. Among natural populations, there was no difference in oviposition rates between the two ploidy types. Our results suggest that differences in oviposition rates among populations of the two cytotypes in the field are caused mainly by differences in environmental context, and that the higher attractiveness of octoploids to herbivores observed under common environmental conditions is balanced by the fact that they occur in habitats which harbor lower densities of butterflies. This illustrates that spatial variation in biotic interactions is the net result of differences in trait distributions of the interacting organisms and differences in environmental context, and that variation in both traits and context are important in understanding species interactions.

Keyword
Anthocharis cardamines, Cardamine pratensis, Cytotype, Oviposition, Plant–animal interactions
National Category
Ecology
Research subject
Plant Ecology
Identifiers
urn:nbn:se:su:diva-100700 (URN)10.1007/s00442-013-2831-4 (DOI)000333171400019 ()
Funder
Swedish Research Council, 1043720
Available from: 2014-02-11 Created: 2014-02-11 Last updated: 2017-12-06Bibliographically approved
2. Among-population variation in tolerance to larval herbivory by Anthocharis cardamines in the polyploid herb Cardamine pratensis
Open this publication in new window or tab >>Among-population variation in tolerance to larval herbivory by Anthocharis cardamines in the polyploid herb Cardamine pratensis
(English)Manuscript (preprint) (Other academic)
National Category
Ecology
Identifiers
urn:nbn:se:su:diva-100974 (URN)
Funder
Swedish Research Council, 1043720
Available from: 2014-02-20 Created: 2014-02-20 Last updated: 2014-10-13Bibliographically approved
3. Among-population variation in butterfly oviposition preference and larval performance on a polyploid herb
Open this publication in new window or tab >>Among-population variation in butterfly oviposition preference and larval performance on a polyploid herb
(English)Manuscript (preprint) (Other academic)
National Category
Ecology
Research subject
Plant Ecology; Entomology
Identifiers
urn:nbn:se:su:diva-100811 (URN)
Funder
Swedish Research Council, 1043720
Available from: 2014-02-14 Created: 2014-02-14 Last updated: 2014-10-13Bibliographically approved
4. Timing of flowering influence intensity of attack by a butterfly herbivore in a polyploid herb
Open this publication in new window or tab >>Timing of flowering influence intensity of attack by a butterfly herbivore in a polyploid herb
(English)Manuscript (preprint) (Other academic)
National Category
Ecology
Research subject
Plant Ecology
Identifiers
urn:nbn:se:su:diva-100837 (URN)
Funder
Swedish Research Council, 1043720
Available from: 2014-02-17 Created: 2014-02-17 Last updated: 2014-10-13Bibliographically approved

Open Access in DiVA

Comprehensive Summary(469 kB)247 downloads
File information
File name FULLTEXT01.pdfFile size 469 kBChecksum SHA-512
f6548a825284126f5d44a017330fea9eec1673f020bc6a302223007158ab9a8a1d8771452e33a0ab37bfe87d96786a03f29afd3a4ff66c87ed6c7fdb4a8b8a80
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
König, Malin A. E.
By organisation
Department of Ecology, Environment and Plant Sciences
EcologyBotany

Search outside of DiVA

GoogleGoogle Scholar
Total: 247 downloads
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

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 348 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf