Looking for a similar partner: host plants shape mating preferences of herbivorous insects by altering their contact pheromones

Geiselhardt, Sven; Otte, Tobias; Hilker, Monika

doi:10.1111/j.1461-0248.2012.01816.x

Cited by 71 publications

(86 citation statements)

References 55 publications

(88 reference statements)

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“…We further show a mechanism that plastically accentuated phenotypes and adaptive habitat choice can jointly promote assortative mating, hence reproductive isolation. A few authors have mentioned this possibility (Smadja and Butlin 2011;Geiselhardt et al 2012;Öhlund 2012), but our results demonstrate it quantitatively for the first time. We suggest that plasticity can contribute to enhanced assortative mating directly or indirectly through adaptive habitat choice, leading to reduction in gene flow, reproductive isolation, and, eventually, ecological speciation.…”

Section: Phenotypic Plasticity Adaptive Habitatsupporting

confidence: 55%

“…It is known that perch (Perca fluviatilis L.) is able to change morphology within 4-6 weeks (Olsson and Eklöv 2005;Svanbäck and Eklöv 2006) and that phytophagous insects can change contact pheromones used for mate choice (affected by host plants) within 2 weeks (Geiselhardt et al 2012). Behavioral and physiological traits may be more amenable for fast switching.…”

Section: Model Considerations and Future Directionsmentioning

confidence: 99%

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Mechanisms by Which Phenotypic Plasticity Affects Adaptive Divergence and Ecological Speciation

Nonaka

Svanbäck

Thibert-Plante

et al. 2015

The American Naturalist

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Phenotypic plasticity is the ability of one genotype to produce different phenotypes depending on environmental conditions. Several conceptual models emphasize the role of plasticity in promoting reproductive isolation and, ultimately, speciation in populations that forage on two or more resources. These models predict that plasticity plays a critical role in the early stages of speciation, prior to genetic divergence, by facilitating fast phenotypic divergence. The ability to plastically express alternative phenotypes may, however, interfere with the early phase of the formation of reproductive barriers, especially in the absence of geographic barriers. Here, we quantitatively investigate mechanisms under which plasticity can influence progress toward adaptive genetic diversification and ecological speciation. We use a stochastic, individual-based model of a predator-prey system incorporating sexual reproduction and mate choice in the predator. Our results show that evolving plasticity promotes the evolution of reproductive isolation under diversifying environments when individuals are able to correctly select a more profitable habitat with respect to their phenotypes (i.e., adaptive habitat choice) and to assortatively mate with relatively similar phenotypes. On the other hand, plasticity facilitates the evolution of plastic generalists when individuals have a limited capacity for adaptive habitat choice. We conclude that plasticity can accelerate the evolution of a reproductive barrier toward adaptive diversification and ecological speciation through enhanced phenotypic differentiation between diverging phenotypes.

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Section: Phenotypic Plasticity Adaptive Habitatsupporting

confidence: 55%

Section: Model Considerations and Future Directionsmentioning

confidence: 99%

Mechanisms by Which Phenotypic Plasticity Affects Adaptive Divergence and Ecological Speciation

Nonaka

Svanbäck

Thibert-Plante

et al. 2015

The American Naturalist

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“…Pheromones may differ because of intrinsic genetic differences between strains [128] or because of differences in the availability of pheromone precursors in the host plants used by different strains [129]. Unfortunately, nothing is currently known about Junonia pheromone use or composition.…”

Section: Discussionmentioning

confidence: 99%

Molecular Population Structure ofJunoniaButterflies from French Guiana, Guadeloupe, and Martinique

Gemmell

Borchers

Marcus

2014

Psyche: A Journal of Entomology

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Up to 9 described species of Junonia butterflies occur in the Americas, but authorities disagree due to species similarities, geographical and seasonal variability, and possible hybridization. In dispute is whether Caribbean Junonia are conspecific with South American species. Cytochrome oxidase I (COI) barcodes, wingless (wg) sequences, and Randomly Amplified Fingerprints (RAF) were studied to reveal Junonia population structure in French Guiana, Guadeloupe, Martinique, and Argentina. Phylogenetic analysis of COI recovered 2 haplotype groups, but most Junonia species can have either haplotype, so COI barcodes are ambiguous. Analysis of nuclear wingless alleles revealed geographic patterns but did not identify Junonia species. Nuclear RAF genotyping distinguished 11 populations of Junonia arranged into 3 clusters. Gene flow occurs within clusters but is limited between clusters. One cluster included all Argentinian samples. Two clusters included samples from French Guiana, Martinique, and Guadeloupe and appear to be divided by larval host plant use (Lamiales versus Scrophulariales). Many Junonia taxa were distributed across populations, possibly reflecting patterns of genetic exchange. We had difficulty distinguishing between the Caribbean forms J. zonalis and J. neildi, but we demonstrate that Caribbean Junonia are genetically distinct from South American J. evarete and J. genoveva, supporting the taxonomic hypothesis that they are heterospecific.

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“…Divergent host plant use can also cause assortative mating by phenotypically altering traits involved in mate recognition. For instance, male mustard leaf beetles Phaedon cochleariae preferred to mate with females reared on the same rather than a different host plant species [54].…”

Section: (C) Biological Implicationsmentioning

confidence: 99%

Transgenerational acclimatization in an herbivore–host plant relationship

Cahenzli

Erhardt

2013

Proc. R. Soc. B.

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Twenty years ago, scientists began to recognize that parental effects are one of the most important influences on progeny phenotype. Consequently, it was postulated that herbivorous insects could produce progeny that are acclimatized to the host plant experienced by the parents to improve progeny fitness, because host plants vary greatly in quality and quantity, and can thus provide important cues about the resources encountered by the next generation. However, despite the possible profound implications for our understanding of host-use evolution of herbivores, host-race formation and sympatric speciation, intense research has been unable to verify transgenerational acclimatization in herbivore-host plant relationships. We reared Coenonympha pamphilus larvae in the parental generation (P) on high-and low-quality host plants, and reared the offspring (F 1 ) of both treatments again on high-and low-quality plants. We tested not only for maternal effects, as most previous studies, but also for paternal effects. Our results show that parents experiencing predictive cues on their host plant can indeed adjust progeny's phenotype to anticipated host plant quality. Maternal effects affected female and male offspring, whereas paternal effects affected only male progeny. We here verify, for the first time to our knowledge, the long postulated transgenerational acclimatization in an herbivore-host plant interaction.

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Looking for a similar partner: host plants shape mating preferences of herbivorous insects by altering their contact pheromones

Cited by 71 publications

References 55 publications

Mechanisms by Which Phenotypic Plasticity Affects Adaptive Divergence and Ecological Speciation

Mechanisms by Which Phenotypic Plasticity Affects Adaptive Divergence and Ecological Speciation

Molecular Population Structure ofJunoniaButterflies from French Guiana, Guadeloupe, and Martinique

Transgenerational acclimatization in an herbivore–host plant relationship

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