Simultaneous inbreeding modifies inbreeding depression in a plant–herbivore interaction

Kalske, Aino; Mutikäinen, Pia; Muola, Anne; Laukkanen, Liisa; Salminen, Juha‐Pekka; Leimu, Roosa

doi:10.1111/ele.12223

Cited by 19 publications

(31 citation statements)

References 56 publications

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“…Finally, herbivore oviposition preference can also have implications for the performance of the host plant and the evolution of self-fertilization. Inbreeding depression in plants is commonly stronger when herbivores are present [3], and likewise, V. hirundinaria also exhibits inbreeding depression in resistance [5,9]. If the higher egg deposition on outbred than inbred plants also leads to greater damage and reduced fitness on the outbred plants, herbivore preference in oviposition can potentially modify the negative effects of inbreeding in plants.…”

Section: Discussionmentioning

confidence: 99%

“…Consequently, inbreeding depression in plants is stronger under herbivory, and inbred plant individuals commonly experience greater herbivore damage compared with outbred individuals [3,[8][9][10]. In herbivores, inbreeding reduces for example performance, fecundity and egg hatching rate [5,11]. The strength of inbreeding depression in the performance of herbivore larvae depends on the inbreeding of the host plant, and similarly, herbivore inbreeding can modify the strength of inbreeding depression in host plant resistance [5].…”

Section: Introductionmentioning

confidence: 99%

“…In herbivores, inbreeding reduces for example performance, fecundity and egg hatching rate [5,11]. The strength of inbreeding depression in the performance of herbivore larvae depends on the inbreeding of the host plant, and similarly, herbivore inbreeding can modify the strength of inbreeding depression in host plant resistance [5].…”

Section: Introductionmentioning

confidence: 99%

“…We know that A. asclepiadis and V. hirundinaria suffer from inbreeding depression in larval performance and resistance, respectively [5,9]. Here, we turn our focus to the effects of inbreeding on different life-history stages of the herbivore (adult, egg) and additional plant traits (apparency, indirect defences) in order to more thoroughly understand the effects of inbreeding at various stages of the plant -herbivore interaction.…”

Section: Introductionmentioning

confidence: 99%

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Preference for outbred host plants and positive effects of inbreeding on egg survival in a specialist herbivore

et al. 2014

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Inbreeding can profoundly affect the interactions of plants with herbivores as well as with the natural enemies of the herbivores. We studied how plant inbreeding affects herbivore oviposition preference, and whether inbreeding of both plants and herbivores alters the probability of predation or parasitism of herbivore eggs. In a laboratory preference test with the specialist herbivore moth Abrostola asclepiadis and inbred and outbred Vincetoxicum hirundinaria plants, we discovered that herbivores preferred to oviposit on outbred plants. A field experiment with inbred and outbred plants that bore inbred or outbred herbivore eggs revealed that the eggs of the outbred herbivores were more likely to be lost by predation, parasitism or plant hypersensitive responses than inbred eggs. This difference did not lead to differences in the realized fecundity as the number of hatched larvae did not differ between inbred and outbred herbivores. Thus, the strength of inbreeding depression in herbivores decreases when their natural enemies are involved. Plant inbreeding did not alter the attraction of natural enemies of the eggs. We conclude that inbreeding can significantly alter the interactions of plants and herbivores at different life-history stages, and that some of these alterations are mediated by the natural enemies of the herbivores.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preference for outbred host plants and positive effects of inbreeding on egg survival in a specialist herbivore

et al. 2014

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“…; Kalske et al. ). The concentrations of the leaf secondary metabolites do not increase following herbivore damage (A. Muola, unpubl.…”

Section: Methodsmentioning

confidence: 96%

Spatiotemporal variation in local adaptation of a specialist insect herbivore to its long-lived host plant

2016

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Local adaptation of interacting species to one another indicates geographically variable reciprocal selection. This process of adaptation is central in the organization and maintenance of genetic variation across populations. Given that the strength of selection and responses to it often vary in time and space, the strength of local adaptation should in theory vary between generations and among populations. However, such spatiotemporal variation has rarely been explicitly demonstrated in nature and local adaptation is commonly considered to be relatively static. We report persistent local adaptation of the short-lived herbivore Abrostola asclepiadis to its long-lived host plant Vincetoxicum hirundinaria over three successive generations in two studied populations and considerable temporal variation in local adaptation in six populations supporting the geographic mosaic theory. The observed variation in local adaptation among populations was best explained by geographic distance and population isolation, suggesting that gene flow reduces local adaptation. Changes in herbivore population size did not conclusively explain temporal variation in local adaptation. Our results also imply that short-term studies are likely to capture only a part of the existing variation in local adaptation.

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Inbreeding in Solanum carolinense alters floral attractants and rewards and adversely affects pollinator visitation

Kariyat

Bentley

Nihranz

et al. 2021

American J of Botany

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Inbreeding depression is well documented in flowering plants and adversely affects a wide range of fitness-related traits. Recent work has begun to explore the effects of inbreeding on ecological interactions among plants and other organisms, including insect herbivores and pathogens. However, the effects of inbreeding on floral traits, floral scents, and pollinator visitation are less well studied. METHODS: Using inbred and outbred maternal families of horsenettle (Solanum carolinense, Solanaceae), we examined the effects of inbreeding on traits associated with pollinator attraction and floral rewards. Specifically, we measured corolla size, counted pollen grains per flower, and analyzed floral volatile emissions via gas chromatography and mass spectrometry. We also examined pollinator visitation to experimental arrays of flowering inbred and outbred plants under field conditions. RESULTS: Compared to those of outbred plants, flowers of inbred plants exhibited reduced corolla size and pollen production, as well as significantly reduced emission of the two most abundant volatile compounds in the floral blend. Furthermore, bumblebees-the main pollinators of horsenettle-discriminated against inbred flowers in the field: bees were more likely to make initial visits to flowers on outbred plants, visited outbred flowers more often overall, and spent more time on outbred flowers. CONCLUSIONS: These results show that inbreeding can (1) alter floral traits that are known to mediate pollinator attraction; (2) reduce the production of floral rewards (pollen is the sole reward in horsenettle); and (3) adversely affect pollinator visitation under field conditions.

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Simultaneous inbreeding modifies inbreeding depression in a plant–herbivore interaction

Cited by 19 publications

References 56 publications

Preference for outbred host plants and positive effects of inbreeding on egg survival in a specialist herbivore

Preference for outbred host plants and positive effects of inbreeding on egg survival in a specialist herbivore

Spatiotemporal variation in local adaptation of a specialist insect herbivore to its long-lived host plant

Inbreeding in Solanum carolinense alters floral attractants and rewards and adversely affects pollinator visitation

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