Dominance status of shape of male genitalia in interspecific crosses of some Drosophila virilis group species

Куликов, А. М.; Мельников, А. И.; Горностаев, Н. Г.; Lazebny, O. E.

doi:10.1134/s1022795413060069

Cited by 2 publications

(2 citation statements)

References 72 publications

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“…The results are summarized in Table 2. The logic of estimating the degree of dominance for a trait has been described previously [68]. Tukey's HSD test yielded similar results; only those of the Gabriel test are shown.…”

Section: Correlated Variability Of Traits Of the Shape Of The Copulatmentioning

confidence: 81%

“…Hoikkala and colleagues [70] have analyzed the within-population variation of mating duration in D. montana and associated the duration of the first mating with female resistance to repeated mating. We have shown that sensory microchaetae on the ventral surface of the aedeagus mediate the association between evolutionarily significant parts of the Drosophila copulatory system with mating behavior [68].…”

Section: Discussionmentioning

confidence: 95%

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The Effects of the Sex Chromosomes on the Inheritance of Species Specific Traits of the Shape of the Copulatory Organ in Drosophila virilis and Drosophila lummei

Куликов

Sorokina

Мельников

et al. 2020

Preprint

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Background. It is well known that the shape of the male copulatory system is strongly associated with mating behavior in Drosophila. The shape of the male genitalia is also known as the most rapidly evolving structure among all morphological characters. However, only a part of the male copulating system, namely epandrium, has actually been used as the only model to study the genetic basis of species-specific differences in the shape of the copulatory system in D. simulans and D. mauritiana. Almost nothing is known about the effects of both sex chromosomes on the shape of the male mating organ. Results. Seven factors were isolated that describe variation of different parts of the male mating organ. The shape of the male mating organ depends on the combination of the sex chromosome status, the autosome status, and the male parent identity as an epigenetic factor. The effect of the male parent identity is possibly mediated through the epigenetic marking of chromosomes in interspecific hybrids during gametogenesis and a subsequent effect of the resulting signatures on the ontogeny of offspring. Epistatic interactions of the sex chromosomes and autosomes and epigenetic effects of the male parent origin from interspecific crosses influence the expression of species-specific traits in the shape of the male copulatory system. Conclusions. Epistatic interactions of the sex chromosomes and autosomes and epigenetic effects of the male parent origin from interspecific crosses influence the expression of species-specific traits in the shape of the male copulatory system. It can be assumed that sexual selection for specific genes associated with male traits implemented in the courtship ritual prevents the well-known effect of demasculinization of the X chromosome.

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Section: Correlated Variability Of Traits Of the Shape Of The Copulatmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 95%

The Effects of the Sex Chromosomes on the Inheritance of Species Specific Traits of the Shape of the Copulatory Organ in Drosophila virilis and Drosophila lummei

Куликов

Sorokina

Мельников

et al. 2020

Preprint

View full text Add to dashboard Cite

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The effects of the sex chromosomes on the inheritance of species-specific traits of the copulatory organ shape in Drosophila virilis and Drosophila lummei

et al. 2020

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The shape of the male genitalia in many taxa is the most rapidly evolving morphological structure, often driving reproductive isolation, and is therefore widely used in systematics as a key character to distinguish between sibling species. However, only a few studies have used the genital arch of the male copulatory organ as a model to study the genetic basis of species-specific differences in the Drosophila copulatory system. Moreover, almost nothing is known about the effects of the sex chromosomes on the shape of the male mating organ. In our study, we used a set of crosses between D. virilis and D. lummei and applied the methods of quantitative genetics to assess the variability of the shape of the male copulatory organ and the effects of the sex chromosomes and autosomes on its variance. Our results showed that the male genital shape depends on the species composition of the sex chromosomes and autosomes. Epistatic interactions of the sex chromosomes with autosomes and the species origin of the Y-chromosome in a male in interspecific crosses also influenced the expression of species-specific traits in the shape of the male copulatory system. Overall, the effects of sex chromosomes were comparable to the effects of autosomes despite the great differences in gene numbers between them. It may be reasonably considered that sexual selection for specific genes associated with the shape of the male mating organ prevents the demasculinization of the X chromosome.

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Dominance status of shape of male genitalia in interspecific crosses of some Drosophila virilis group species

Cited by 2 publications

References 72 publications

The Effects of the Sex Chromosomes on the Inheritance of Species Specific Traits of the Shape of the Copulatory Organ in Drosophila virilis and Drosophila lummei

The Effects of the Sex Chromosomes on the Inheritance of Species Specific Traits of the Shape of the Copulatory Organ in Drosophila virilis and Drosophila lummei

The effects of the sex chromosomes on the inheritance of species-specific traits of the copulatory organ shape in Drosophila virilis and Drosophila lummei

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