Temperature-Specific and Sex-Specific Fitness Effects of Sympatric Mitochondrial and Mito-Nuclear Variation in Drosophila obscura
2022
Autori:
Erić, PavlePatenković, Aleksandra
Erić, Katarina
Tanasković, Marija
Davidović, Slobodan
Rakić, Mina
Savić Veselinović, Marija
Stamenković-Radak, Marina
Jelić, Mihailo
Tip dokumenta:
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
The adaptive significance of sympatric mitochondrial (mtDNA) variation and the role of
selective mechanisms that maintain it are debated to this day. Isofemale lines of Drosophila obscura
collected from four populations were backcrossed within populations to construct experimental
lines, with all combinations of mtDNA Cyt b haplotypes and nuclear genetic backgrounds (nuDNA).
Individuals of both sexes from these lines were then subjected to four fitness assays (desiccation
resistance, developmental time, egg-to-adult viability and sex ratio) on two experimental temperatures to examine the role of temperature fluctuations and sex-specific selection, as well as the part
that interactions between the two genomes play in shaping mtDNA variation. The results varied
across populations and fitness components. In the majority of comparisons, they show that sympatric
mitochondrial variants affect fitness. However, their effect should be examined in light of interactions
with nuDNA, as mito-nuclear genotype was even more influential on fitness across all components.
We found both sex-specific and temperature-specific differences in mitochondrial and mito-nuclear
genotype ranks in all fitness components. The effect of temperature-specific selection was found to
be more prominent, especially in desiccation resistance. From the results of different components
tested, we can also infer that temperature-specific mito-nuclear interactions rather than sex-specific
selection on mito-nuclear genotypes have a more substantial role in preserving mtDNA variation in
this model species.
Ključne reči:
D. obscura; Cyt b gene; Desiccation resistance; Developmental time; Viability; Sex-ratio; mtDNA; Intra-population variationIzvor:
Insects, 2022, 13, 2, 139-Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200007 (Univerzitet u Beogradu, Institut za biološka istraživanja 'Siniša Stanković') (RS-MESTD-inst-2020-200007)
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200178 (Univerzitet u Beogradu, Biološki fakultet) (RS-MESTD-inst-2020-200178)
DOI: 10.3390/insects13020139
ISSN: 2075-4450
PubMed: 35206713