Ecological and Evolutionary Consequences of Herbivory in the Perennial Herb Lythrum salicaria

In this thesis, I combined field, common-garden and greenhouse experiments to examine the ecological and evolutionary consequences of plant-herbivore interactions in the perennial herb Lythrum salicaria. More specifically I examined (1) whether resistance and tolerance to damage from herbivores vary...

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Main Author: Lehndal, Lina
Format: Doctoral or Postdoctoral Thesis
Language:English
Published: Uppsala universitet, Växtekologi och evolution 2015
Subjects:
Online Access:http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-247088
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spelling ftuppsalauniv:oai:DiVA.org:uu-247088 2023-05-15T17:45:04+02:00 Ecological and Evolutionary Consequences of Herbivory in the Perennial Herb Lythrum salicaria Lehndal, Lina 2015 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-247088 eng eng Uppsala universitet, Växtekologi och evolution Uppsala Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, 1651-6214 1238 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-247088 urn:isbn:978-91-554-9196-3 info:eu-repo/semantics/openAccess Disturbance gradient Female reproductive success Galerucella calmariensis Galerucella pusilla Herbivore removal Latitudinal gradient Local adaptation Nanophyes marmoratus Plant-herbivore interactions Plant size Resistance to herbivory Tolerance to damage Doctoral thesis, comprehensive summary info:eu-repo/semantics/doctoralThesis text 2015 ftuppsalauniv 2023-02-23T21:38:49Z In this thesis, I combined field, common-garden and greenhouse experiments to examine the ecological and evolutionary consequences of plant-herbivore interactions in the perennial herb Lythrum salicaria. More specifically I examined (1) whether resistance and tolerance to damage from herbivores vary with latitude and are positively related to the intensity of herbivory in natural populations, (2) whether effects of herbivory on plant fitness vary with latitude, (3) whether populations are locally adapted and whether herbivory influences the relative fitness of populations, and (4) whether the intensity and effects of insect herbivory on reproductive output vary locally along a disturbance gradient and are associated with differences in plant resistance. A common-garden and a greenhouse experiment demonstrated that plant resistance decreased whereas plant tolerance increased with latitude of origin among populations sampled along a latitudinal gradient in Sweden. Oviposition and feeding preference in the greenhouse and leaf damage in the common-garden experiment were negatively related to natural damage in the source populations. Experimental removal of insect herbivores in three populations sampled along the latitudinal gradient demonstrated that intensity of herbivory and its effects on plant fitness decreased towards the north. A reciprocal transplant experiment among the same three populations showed that herbivory affected the relative fitness of the three populations, but did not detect any evidence of local adaptation. Instead the southernmost population had the highest relative fitness at all three sites. A herbivore-removal experiment conducted in nine populations in an archipelago in northern Sweden demonstrated that insect herbivory strongly influenced among-population variation in reproductive output. However, variation in resistance was not related to differences in intensity of herbivory at this spatial scale. Taken together, the results demonstrate that resistance and tolerance to herbivory vary ... Doctoral or Postdoctoral Thesis Northern Sweden Uppsala University: Publications (DiVA)
institution Open Polar
collection Uppsala University: Publications (DiVA)
op_collection_id ftuppsalauniv
language English
topic Disturbance gradient
Female reproductive success
Galerucella calmariensis
Galerucella pusilla
Herbivore removal
Latitudinal gradient
Local adaptation
Nanophyes marmoratus
Plant-herbivore interactions
Plant size
Resistance to herbivory
Tolerance to damage
spellingShingle Disturbance gradient
Female reproductive success
Galerucella calmariensis
Galerucella pusilla
Herbivore removal
Latitudinal gradient
Local adaptation
Nanophyes marmoratus
Plant-herbivore interactions
Plant size
Resistance to herbivory
Tolerance to damage
Lehndal, Lina
Ecological and Evolutionary Consequences of Herbivory in the Perennial Herb Lythrum salicaria
topic_facet Disturbance gradient
Female reproductive success
Galerucella calmariensis
Galerucella pusilla
Herbivore removal
Latitudinal gradient
Local adaptation
Nanophyes marmoratus
Plant-herbivore interactions
Plant size
Resistance to herbivory
Tolerance to damage
description In this thesis, I combined field, common-garden and greenhouse experiments to examine the ecological and evolutionary consequences of plant-herbivore interactions in the perennial herb Lythrum salicaria. More specifically I examined (1) whether resistance and tolerance to damage from herbivores vary with latitude and are positively related to the intensity of herbivory in natural populations, (2) whether effects of herbivory on plant fitness vary with latitude, (3) whether populations are locally adapted and whether herbivory influences the relative fitness of populations, and (4) whether the intensity and effects of insect herbivory on reproductive output vary locally along a disturbance gradient and are associated with differences in plant resistance. A common-garden and a greenhouse experiment demonstrated that plant resistance decreased whereas plant tolerance increased with latitude of origin among populations sampled along a latitudinal gradient in Sweden. Oviposition and feeding preference in the greenhouse and leaf damage in the common-garden experiment were negatively related to natural damage in the source populations. Experimental removal of insect herbivores in three populations sampled along the latitudinal gradient demonstrated that intensity of herbivory and its effects on plant fitness decreased towards the north. A reciprocal transplant experiment among the same three populations showed that herbivory affected the relative fitness of the three populations, but did not detect any evidence of local adaptation. Instead the southernmost population had the highest relative fitness at all three sites. A herbivore-removal experiment conducted in nine populations in an archipelago in northern Sweden demonstrated that insect herbivory strongly influenced among-population variation in reproductive output. However, variation in resistance was not related to differences in intensity of herbivory at this spatial scale. Taken together, the results demonstrate that resistance and tolerance to herbivory vary ...
format Doctoral or Postdoctoral Thesis
author Lehndal, Lina
author_facet Lehndal, Lina
author_sort Lehndal, Lina
title Ecological and Evolutionary Consequences of Herbivory in the Perennial Herb Lythrum salicaria
title_short Ecological and Evolutionary Consequences of Herbivory in the Perennial Herb Lythrum salicaria
title_full Ecological and Evolutionary Consequences of Herbivory in the Perennial Herb Lythrum salicaria
title_fullStr Ecological and Evolutionary Consequences of Herbivory in the Perennial Herb Lythrum salicaria
title_full_unstemmed Ecological and Evolutionary Consequences of Herbivory in the Perennial Herb Lythrum salicaria
title_sort ecological and evolutionary consequences of herbivory in the perennial herb lythrum salicaria
publisher Uppsala universitet, Växtekologi och evolution
publishDate 2015
url http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-247088
genre Northern Sweden
genre_facet Northern Sweden
op_relation Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, 1651-6214
1238
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-247088
urn:isbn:978-91-554-9196-3
op_rights info:eu-repo/semantics/openAccess
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