Altitudinal variation in lifespan of Drosophila melanogaster populations from the Firtina Valley, northeastern Turkey
| Autor: | Banu Sebnem Onder, Pinar Güler, Nazli Ayhan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Male TEMPERATURE DECREASE Turkey Physiology Acclimatization Climate Longevity 010603 evolutionary biology 01 natural sciences Biochemistry 03 medical and health sciences Altitude Stress Physiological Genotype Melanogaster Animals Local adaptation Natural selection biology Ecology Temperature biology.organism_classification Temperature stress Diet 030104 developmental biology Drosophila melanogaster Animal Nutritional Physiological Phenomena Female General Agricultural and Biological Sciences Developmental Biology |
| Zdroj: | Journal of thermal biology. 61 |
| ISSN: | 0306-4565 |
| Popis: | Studies of altitudinal changes in phenotype and genotype can complement studies of latitudinal patterns and provide evidence of natural selection in response to climatic factors. In Drosophila melanogaster , latitudinal variation in phenotype and genotype has been well studied, but altitudinal patterns have rarely been investigated. We studied populations from six different altitudes varying between 35 m and 2173 m in the Firtina Valley in northeastern part of Turkey to evaluate clinal trends in lifespan under experimental conditions. Lifespan in the D. melanogaster populations was examined in relation to altitude, sex, temperature (25 °C and 29 °C), and dietary yeast concentration (5 g/L and 25 g/L). As expected high temperature decrease lifespan in all populations. However, it was shown that lifespan was slightly affected by dietary stress. We found that lifespan decreases significantly under thermal stress conditions with increasing altitude. Moreover, there was a slightly negative relationship between altitude and lifespan, which was closely associated with climatic factors such as temperature and precipitation, may suggest local adaptation to climate. |
| Databáze: | OpenAIRE |
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