Temperature shapes chromosome inversion polymorphism of Drosophila subobscura through generations
2022
Authors:
Erić, KatarinaSavić Veselinović, Marija
Patenković, Aleksandra
Erić, Pavle
Jelić, Miahilo
Stamenković-Radak, Marina
Tanasković, Marija
Document Type:
Conference object (Published version)
,
© 2022 by the European Society for Evolutionary Biology
Metadata
Show full item recordAbstract:
Drosophila subobscura is a wide spread Palearctic species, which possesses very rich
inversion polymorphism in all of the five acrocentric chromosomes. As populations rapid
response to fast changes of environmental conditions can be seen through changes in
inversions frequency, this polymorphism is good candidate to measure the effect of
temperature on the genetic structure of population. Frequencies of particular
chromosomal arrangements are correlated with temperature, with standard
arrangements increasing in frequency at lower temperatures, and more complex
arrangements like J1, U1+2, U1+2+6, E1+2+9, and O3+4 increasing in frequency at higher
temperatures. In order to explore the effect of optimal and suboptimal temperatures on
the arrangements frequencies, samples of D. subobscura population from a high altitude
were reared in laboratory at suboptimal (16°C) and optimal (19°C). Chromosome
arrangements frequencies were analyzed and compared through generations (F0, F5, and
F16). The increasing frequency of complex chromosome arrangements and the
decreasing frequency of standard chromosomal arrangements were observed. There are
significant differences in some of the chromosome arrangements between suboptimal
and optimal conditions and also between generations, indicating laboratory adaptation
through generations.
Keywords:
Drosophila subobscura; Temperature; Chromosome inversion polymorphismIn:
- Book of Abstracts: Congress of the European Society for Evolutionary Biology; 2022 Aug 14-19; Pague, Czech Republic. European Society for Evolutionary Biology; 2022. p. 759.