Department of Genetics, Institute for Biological Research "Sinisa Stankovic" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia.
Departament de Genètica, Microbiologia i Estadística, Secció d'Estadística, Universitat de Barcelona, Barcelona, Spain.
Genetica. 2021 Jun;149(3):155-169. doi: 10.1007/s10709-021-00125-7. Epub 2021 Jun 15.
The adaptive value of chromosomal inversions continues raising relevant questions in evolutionary biology. In many species of the Drosophila genus, different inversions have been recognized to be related to thermal adaptation, but it is necessary to determine to which specific climatic variables the inversions are adaptive. With this aim, the behavior of thermal adapted inversions of Drosophila subobscura regarding climatic variables was studied in the natural population of Avala (Serbia) during the 2014-2017 period. The results obtained were compared with those previously reported in the Font Groga (Barcelona, Spain) population, which presents different climatic and environmental conditions. In both populations, it was observed that most thermal adapted inversions were significantly associated with the first, second or both principal components, which were related with maximum, minimum and mean temperatures. Moreover, a significant increase over years (2004-2017) for the minimum temperature was detected. In parallel, a significant variation over time in Avala was only observed for the frequencies of 'warm' and 'non-thermal' adapted inversions of the U chromosome. However, stability in the chromosomal inversion polymorphism was observed for the 2014-2017 period which might result from the temporal span of the study and/or selective process acting on the population.
染色体倒位的适应价值在进化生物学中不断引发相关问题。在果蝇属的许多物种中，已经发现不同的倒位与热适应有关，但需要确定倒位适应的是哪些特定的气候变量。为此，在 2014-2017 年期间，在塞尔维亚阿瓦拉（Avala）的自然种群中研究了果蝇 subobscura 的热适应倒位与气候变量之间的关系。所获得的结果与以前在西班牙巴塞罗那的丰特格罗加（Font Groga）种群中报道的结果进行了比较，该种群具有不同的气候和环境条件。在这两个种群中，观察到大多数热适应的倒位与第一、第二或两个主成分显著相关，这些主成分与最高温度、最低温度和平均温度有关。此外，还检测到最低温度在过去几年中（2004-2017 年）显著增加。同时，仅在阿瓦拉观察到 U 染色体上的“温暖”和“非热”适应倒位的频率随时间发生显著变化。然而，在 2014-2017 年期间，染色体倒位多态性保持稳定，这可能是由于研究的时间跨度和/或对种群起作用的选择过程。
