Establishing Chymomyza costata as a new genetic model system to study photoperiodism

光周期是一种机制，通过这种机制，活着的有机体可以感知白天的长短，并对每种情况做出不同的反应。尽管光周期现象在生活在四季地区的物种中很常见，但对其分子机制的研究很少。在这里，我们试图建立一种新的研究光周期的遗传易控模型系统--中肋裂霉菌。虽然我可以在实验室中成功地培养中肋甲，但配对交配和大量收集卵子被发现是困难的，使中肋甲不是进行遗传操作的理想物种。因此，我转向了其他果蝇物种。通过对几个不同物种的比较，我发现繁殖滞育是研究光周期的最理想的系统。此外，我还发现，腐食粉虫的季节颜色变化受光周期的控制。

Photoperiodism is a mechanism by which living organisms perceive long or short day lengths and differentially respond to each condition. Although photoperiodism is common in species living in areas where there are four seasons, little has been studied on its molecular mechanisms. Here we tried to establish Chymomyza costata as a new genetically tractable model system to study photoperiodims. Although I could successufully culture C. costata in the laboratory, pair-mating and mass egg collection were found to be difficult, making C. costata an unideal species for genetic manipulation. Therefore, I turned to other Drosophila species. After comparing several different species, I found that reproductive diapause of D. bifasciata is the most ideal system to study photoperiodism. In addition, I found that seasonal color variation in D. puturida is under the photoperiodic control.