The effects of the sex chromosomes on the inheritance of species-specific traits of the copulatory organ shape in Drosophila virilis and Drosophila lummei
| Autor: | Nick G. Gornostaev, A. I. Melnikov, Svetlana Yu. Sorokina, Oleg E. Lazebny, A. M. Kulikov, Dmitriy G. Seleznev |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Male
Heredity Science Variant Genotypes Genitalia Male Chromosomes Quantitative Trait Heritable Species Specificity Genetics Animals Sex organ Allele Mating X chromosome Crosses Genetic Alleles Multidisciplinary Autosome Sex Chromosomes biology Chromosome Biology Autosomes Biology and Life Sciences Epistasis Genetic X Chromosomes Reproductive isolation Organ Size Cell Biology biology.organism_classification Y Chromosomes Chromosomes Insect Drosophila virilis Phenotypes Genetic Mapping Evolutionary biology Genetic Loci Sexual selection Epistasis Medicine Drosophila Female Research Article |
| Zdroj: | PLoS ONE, Vol 15, Iss 12, p e0244339 (2020) PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | 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 theDrosophilacopulatory 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 betweenD.virilisandD.lummeiand 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. |
| Databáze: | OpenAIRE |
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