Differential flight activity among karyotypes: daily and weather-induced changes in chromosomal inversion polymorphism in natural populations ofDrosophila subobscura
✍ Scribed by M. Gosteli
- Publisher
- Springer Netherlands
- Year
- 1991
- Tongue
- English
- Weight
- 590 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0016-6707
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✦ Synopsis
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 Usa, l+2 and Ist/s t decreased from early to late morning and increased during the evening. Ist/1 displayed a complementary behaviour. The homokaryotypes Os~/st and Est/s t decreased both during the morning and the evening. Weather disturbances caused a remarkable variation in the frequencies of the standard gene arrangements.