Alteration of sex-related developmental modules: A case of "feminized" male wing morphology in Creobroter gemmatus (Mantodea: Hymenopodidae)

Béthoux, Olivier

doi:10.14411/eje.2010.018

Cited by 4 publications

(2 citation statements)

References 11 publications

(10 reference statements)

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“…The fact that Kauai and Oahu flatwing forms evolved so recently opens a rare opportunity to study the initial genetic architecture underlying a convergent behavioral phenotype. Female-like wings have been documented in male mantids [16], and the presence of flatwing males in crosses where none were expected in both this study and in a previous one [13] (Table 1) suggests that male wing abnormalities might arise more frequently than expected due to mutations on the X chromosome. The X is more prone to accumulating male-antagonistic mutations in systems with female-homogametic sex determination, and the evolutionary loss or reduction of wings (brachyptery) is widespread and has independently arisen in numerous insect lineages [17].…”

Section: Incipient Convergent Evolutionsupporting

confidence: 54%

Rapid Convergent Evolution in Wild Crickets

et al. 2014

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The earliest stages of convergent evolution are difficult to observe in the wild, limiting our understanding of the incipient genomic architecture underlying convergent phenotypes. To address this, we capitalized on a novel trait, flatwing, that arose and proliferated at the start of the 21st century in a population of field crickets (Teleogryllus oceanicus) on the Hawaiian island of Kauai. Flatwing erases sound-producing structures on male forewings. Mutant males cannot sing to attract females, but they are protected from fatal attack by an acoustically orienting parasitoid fly (Ormia ochracea). Two years later, the silent morph appeared on the neighboring island of Oahu. We tested two hypotheses for the evolutionary origin of flatwings in Hawaii: (1) that the silent morph originated on Kauai and subsequently introgressed into Oahu and (2) that flatwing originated independently on each island. Morphometric analysis of male wings revealed that Kauai flatwings almost completely lack typical derived structures, whereas Oahu flatwings retain noticeably more wild-type wing venation. Using standard genetic crosses, we confirmed that the mutation segregates as a single-locus, sex-linked Mendelian trait on both islands. However, genome-wide scans using RAD-seq recovered almost completely distinct markers linked with flatwing on each island. The patterns of allelic association with flatwing on either island reveal different genomic architectures consistent with the timing of two mutational events on the X chromosome. Divergent wing morphologies linked to different loci thus cause identical behavioral outcomes--silence--illustrating the power of selection to rapidly shape convergent adaptations from distinct genomic starting points.

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Section: Incipient Convergent Evolutionsupporting

confidence: 54%

Rapid Convergent Evolution in Wild Crickets

et al. 2014

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“…The distinct sexual dimorphism of mantids is most likely derived from their diverse mating behaviours. Compared with the female mantid, the male mantid, as a sex-pheromone receptor (Robinson and Robinson, 1979), typically possesses stronger wings (Robinson and Robinson, 1979;Roy, 2003;Béthoux, 2010;Lombardo and Umbriaco, 2011), longer mid and hind legs (termed walking legs) (Prete et al 2002), and denser grooved basiconic sensilla, which are hypothesized to be the sensory organ of the sex pheromone (Slifer, 1968;Hurd et al 2004;Holwell et al 2007;Allen et al 2012). By contrast, the front legs (also called the raptorial legs), which are mainly involved in preying, of female mantids are longer than those of male mantids (Prete et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Morphological allometry and intersexuality in horsehair-worm-infected mantids,Hierodula formosana(Mantodea: Mantidae)

Chiu

Huang

et al. 2015

Parasitology

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Parasitic castration is a strategy used by parasites to minimize damage to the host by consuming its reproductive system, which results in the morphological alteration of the host. We determined that the forewing shape and density of the antennal sensilla of field-collected adult male mantids (Hierodula formosana), infected by horsehair worms (Chordodes formosanus) was partially feminized (intersexuality), and both male and female mantids infected by horsehair worms exhibited allometric changes in their wings and walking legs. In addition, the testes of most infected male adults disappeared or reduced in size, whereas the number of ovarioles in infected female adults was unaffected. The infection mainly influenced the structures related to host reproduction and locomotion, suggesting unbalanced energy exploitation and the reduction of parasitic virulence. In addition, the intersexuality of infected male adults indicated that sexual differentiation in insects, which researchers have considered to be an autonomous process, was influenced by the infection. The similarity of the antennae of infected male adults with those of last-instar female nymphs suggested that parasitic juvenilization may cause such feminization, but the mechanism of parasitic influence on insect sex characteristics should be studied further.

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First Record of Creobroter apicalis Saussure, 1869 (Mantodea: Hymenopodidae) in the Southern Province of Sri Lanka: Unveiling a New Geographic Record of Flower Mantis

GAMAGE,

RANASINGHE,

CHATHURANGA

2024

Zootaxa

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In Sri Lanka, the genus Creobroter has received inadequate attention, resulting in a scarcity of information with only C. pictipennis being recorded. We report the presence of Creobroter apicalis in Sri Lanka for the first time, extending its geographic distribution to Matara District, Southern Sri Lanka. Species identification was made with an examination of adult male and female specimens for morphological characters through detailed examination and reference to available literature and keys. Identification was confirmed with molecular analysis and comparison with other sequenced Creobroter spp.

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Alteration of sex-related developmental modules: A case of "feminized" male wing morphology in Creobroter gemmatus (Mantodea: Hymenopodidae)

Cited by 4 publications

References 11 publications

Rapid Convergent Evolution in Wild Crickets

Rapid Convergent Evolution in Wild Crickets

Morphological allometry and intersexuality in horsehair-worm-infected mantids,Hierodula formosana(Mantodea: Mantidae)

First Record of Creobroter apicalis Saussure, 1869 (Mantodea: Hymenopodidae) in the Southern Province of Sri Lanka: Unveiling a New Geographic Record of Flower Mantis

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