title: Differential flight activity among karyotypes: daily and weather-induced changes in chromosomal inversion polymorphism in natural populations of Drosophila subobscura.
abstract: The question is posed whether karyotype frequencies in the active fraction of Drosophila subobscura populations vary consistently in the course of a day, or in accordance with weather changes. Significant daily variation occurred in all chromosomes with the exception of the sex chromosome. The proportions of the karyotypes Ust/1+2 and Ist/st decreased from early to late morning and increased during the evening. Ist/1 displayed a complementary behaviour. The homokaryotypes Ost/st and Est/st decreased both during the morning and the evening. Weather disturbances caused a remarkable variation in the frequencies of the standard gene arrangements.
authors.affiliation: Zoological Museum, University of Zürich-Irchel, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Gosteli
mesh_terms: D000818:Animals; D007446:Chromosome Inversion; D002940:Circadian Rhythm; D004330:Drosophila / Q000235:genetics / Q000502:physiology*; D005426:Flight, Animal; D005787:Gene Frequency; D007621:Karyotyping; D009043:Motor Activity; D011110:Polymorphism, Genetic; D014887:Weather; D014921:Wings, Animal / Q000502:physiology