Direct and correlated responses to bi-directional selection on pre-adult development time in Drosophila montana
| Autor: | Hannele Kauranen, Johanna Kinnunen, Anneli Hoikkala, David Hopkins |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Male Physiology mahlakärpäset media_common.quotation_subject Acclimatization Photoperiod Circadian clock evoluutio pre-adult developmental time Zoology reproductive diapause Diapause Biology Diapause Insect 01 natural sciences talvehtiminen bi-directional selection experiment body weight 03 medical and health sciences kylmänkestävyys Control line Animals Circadian rhythm paino (fysiikka) Selection Genetic Selection (genetic algorithm) media_common vuorokausirytmi luonnonvalinta Directional selection Body Weight Pupa cold tolerance critical day length Evolvability Cold Temperature 010602 entomology 030104 developmental biology Insect Science Larva ta1181 Drosophila Female Reproduction |
| Zdroj: | Journal of insect physiology. 116 |
| ISSN: | 1879-1611 |
| Popis: | Selection experiments offer an efficient way to study the evolvability of traits that play an important role in insects’ reproduction and/or survival and to trace correlations and trade-offs between them. We have exercised bi-directional selection on Drosophila montana flies’ pre-adult development time under constant light and temperature conditions for 10 generations and traced the indirect effects of this selection on females’ diapause induction under different day lengths, as well as on the body weight and cold tolerance of both sexes. Overall, selection was successful towards slow, but not towards fast development. However, all fast selection line replicates showed at the end of selection increased variance in females’ photoperiodic diapause response and about one hour increase in the critical day (CDL), where more than 50% of emerging females enter diapause. Indirect effects of selection on flies’ body weight and cold-tolerance were less clear, as the flies of the slow selection line were significantly heavier and less cold-tolerant than the control line flies after five generations of selection, but lighter and more cold-tolerant at the end of selection. Changes in females’ diapause induction resulting from selection for fast development could be due to common metabolic pathways underlying these traits, collaboration of circadian clock and photoperiodic timer and/or by the interaction between the endocrine and circadian systems. peerReviewed |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect