Speciation in the Globeflower Fly Chiastocheta spp. (Diptera: Anthomyiidae) in Relation to Host Plant Species, Biogeography, and Morphology

Després, Laurence; Pettex, Emeline; Plaisance, Valérie; Pompanon, François

doi:10.1006/mpev.2001.1047

Cited by 39 publications

(30 citation statements)

References 31 publications

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“…Resource sharing among species involves a fine timing in oviposition, particularly in the globeflower–globeflower fly interaction, where at least six species oviposit sequentially throughout the 6–10 days of a flower's lifetime (Després & Jaeger 1999). In the globeflower flies, several lines of evidence, including phylogeny and biogeography, indicate that divergence between early and late ovipositing species evolved in sympatry (Després et al . 2002a; Després, Loriot & Gaudeul 2002b) through disruptive selection on oviposition timing.…”

Section: Introductionmentioning

confidence: 99%

The role of competition in adaptive radiation: a field study on sequentially ovipositing host‐specific seed predators

Després

Cherif

2004

Journal of Animal Ecology

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Summary 1.We propose an alternative model to the host-shifting model of sympatric speciation in plant-insect systems. The role of competition in driving ecological adaptive radiation was evaluated in a seed predator exploiting a single host-plant species. Sympatric speciation may occur through disruptive selection on oviposition timing if this shift decreases competition among larvae feeding on seeds. 2. The globeflower fly Chiastocheta presents a unique case of adaptive radiation, with at least six sister species co-developing in fruits of Trollius europaeus . These species all feed on seeds, and differ in their oviposition timing, one species ovipositing in 1-day-old flowers (early species), while all the other species sequentially oviposit throughout the flower life span (late species). We evaluated the impact of conspecific and heterospecific larvae on larval installation success, and on larval fresh mass and area, for early and late species, in natural conditions. 3. None of the three larval traits measured was correlated with fruit size, and no fruit lost all seeds to predation, suggesting that seed availability was not a limiting factor for larval development. 4. Our results show strong intraspecific competition among early larvae for larval installation, and among late larvae for larval mass. By contrast, larval competition between species was weak. These results are consistent with the hypothesis that shifts in oviposition promoted rapid radiation in globeflower flies by lowering competition among larvae.

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Section: Introductionmentioning

confidence: 99%

The role of competition in adaptive radiation: a field study on sequentially ovipositing host‐specific seed predators

Després

Cherif

2004

Journal of Animal Ecology

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“…In addition, it is remarkable that oviposition site selection significantly differed between the two pop ulations because species diversification has been known to involve shift between different plant organs of the same host plant species (e.g., Condon and Steck 1997, Despres et al 2002, Joy and Cresipi 2007. There fore, oviposition site selection by the two populations will possibly facilitate their diversification.…”

Section: Discussionmentioning

confidence: 99%

Sexual Isolation between Two Known Intraspecific Populations ofHartigiola(Diptera: Cecidomyiidae) That Induce Leaf Galls on Upper and Lower Surfaces ofFagus crenata(Fagales: Fagaceae), Indicating Possible Diversification into Sibling Species

Mishima

Sato²,

Tsuda³

et al. 2014

Annals of the Entomological Society of America

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Hartigiola faggalli (Monzen), a cecidomyiid species that induces leaf galls on Fagus crenata Blume (Fagales: Fagaceae), was studied to assess the degree of sexual isolation between known intraspecific populations derived from two different gall types. "Upper-type galls" form on the lateral veins of upper leaf surfaces, whereas "lower-type galls" develop between the lateral veins of lower leaf surfaces. The two populations were distinguished based on slight differences in their DNA sequences. They coexisted in F. crenata forests. Emergence, swarming, mating, and oviposition occurred sequen tially each day and almost simultaneously in both populations. Thus, they were not isolated from each other in time or space. However, 85% of 134 swarming males flew to females of the same population when responding to female sex pheromone. About 92% of 251 mating pairs were homogenic, and IPSI indicated a significantly homogenic mating. The female sex pheromone and male sensitivity to the pheromone seemed to differ between the two populations. After mating, females of each population oviposited their eggs only on either the upper or lower surfaces of fresh leaves. The strongly assortative mating combined with differences in pheromones and gall morphology indicates that the two populations are almost completely reproductively isolated and that they have diversified into the stage of sibling species.

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“…Named species can be formed by repeated speciation (Turner 2002) or by hybridization between other species (Bogart 2003;Rieseberg 1997). Or particular species may have an incomplete coalescence of genetic lineages or haplotypes (Beltrán, Jiggins, et al 2002;Després, Pettex, et al 2002).…”

Section: Background About Speciesmentioning

confidence: 99%

The Hunting of the SNaRC: A Snarky Solution to the Species Problem

Mishler¹,

Wilkins²

2018

Philosophy, Theory, and Practice in Biology

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We argue that the logical outcome of the cladistics revolution in biological systematics, and the move towards rankless phylogenetic classification of nested monophyletic groups as formalized in the PhyloCode, is to eliminate the species rank along with all the others and simply name clades. We propose that the lowest level of formally named clade be the SNaRC, the Smallest Named and Registered Clade. The SNaRC is an epistemic level in the classification, not an ontic one. Naming stops at that level because there is no currently acceptable evidence for clades within it, not because no smaller clades exist. Later, included clades may be named. They would then become the SNaRCs, while the original SNaRC would keep its original name. We argue that all theoretical tasks of biology, in evolution and ecology, as well as practical tasks such as conservation assessment, are better approached using this rankless phylogenetic approach.

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Speciation in the Globeflower Fly Chiastocheta spp. (Diptera: Anthomyiidae) in Relation to Host Plant Species, Biogeography, and Morphology

Cited by 39 publications

References 31 publications

The role of competition in adaptive radiation: a field study on sequentially ovipositing host‐specific seed predators

The role of competition in adaptive radiation: a field study on sequentially ovipositing host‐specific seed predators

Sexual Isolation between Two Known Intraspecific Populations ofHartigiola(Diptera: Cecidomyiidae) That Induce Leaf Galls on Upper and Lower Surfaces ofFagus crenata(Fagales: Fagaceae), Indicating Possible Diversification into Sibling Species

The Hunting of the SNaRC: A Snarky Solution to the Species Problem

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