QTL analysis of the photoperiodic response and clinal distribution of period alleles in Nasonia vitripennisPaolucci, S., Salis, L., Vermeulen, C. J., Beukeboom, L. W. & van de Zande, L. Oct-2016 In : Molecular Ecology. 25, 19, p. 4805-4817 13 p.
Research output: Scientific - peer-review › Article
In seasonal environments, organisms synchronize their life cycle with the annual cycle of environmental factors. In many insect species, this includes a diapause response: a timed dormant stage that allows to survive harsh winter conditions. Previously, we have shown that larval diapause in the parasitic wasp Nasonia vitripennis is induced by the mother upon exposure to a threshold number of short photoperiods (named switch point) and diapause response follows a latitudinal cline in natural populations. Here, we present a QTL analysis using two lines derived from the extremes of this clinal distribution: a northern line from Oulu, Finland and a southern line from Corsica, France. A genomic region on chromosome 1 and one on chromosome 5 were found to be associated with photoperiodic diapause induction. Interestingly, these regions contain the putative clock genes period, cycle (chromosome 1) and cryptochrome (chromosome 5). An analysis of period polymorphisms in seven European populations showed a clinal distribution of two main haplotypes that correlate with the latitudinal cline for diapause induction.
|Number of pages||13|
|State||Published - Oct-2016|
- clock genes, diapause, latitudinal cline, Nasonia vitripennis, photoperiodism, QUANTITATIVE TRAIT LOCI, DROSOPHILA CLOCK GENE, CIRCADIAN CLOCK, SARCOPHAGA-ARGYROSTOMA, INSECT PHOTOPERIODISM, LATITUDINAL CLINE, MATERNAL ORIGIN, LARVAL DIAPAUSE, FLESH-FLY, MELANOGASTER