Transgenerational seasonal timer for suppression of sexual morph production in the pea aphid, Acyrthosiphon pisum.
Transgenerational seasonal timer for suppression of sexual morph production in the pea aphid, Acyrthosiphon pisum.
复制标题
DOI：
10.1016/j.jinsphys.2017.06.008
复制
发表时间：
2017-08
影响因子：
2.2
通讯作者：
Naoki Matsuda;T. Kanbe;S. Akimoto;H. Numata
中科院分区：
文献类型：
--
作者：
Naoki Matsuda;T. Kanbe;S. Akimoto;H. Numata
许多蚜虫的繁殖方式具有季节性，有性世代出现在秋季。性世代是由短日照引起的。据报道，在从越冬卵孵化后的几代中，性变体的出现受到跨代因素（季节性计时器）的抑制。本研究探讨了是否季节定时器措施的天数孵化或代数孵化使用豌豆蚜，Acyrthosiphon pisumHarris（同翅目：蚜虫科）。温度和光周期对季节性计时器的影响也通过连续饲养进行了研究。产生性变形的能力被强烈抑制在干母亲（foundress一代），并逐渐恢复在连续几个月内产生的世代。季节定时器的持续时间取决于孵化天数和温度，但不取决于光周期或孵化的世代数。因此，我们在一个单一的研究中表明，豌豆蚜虫的季节性定时器具有在不同蚜虫物种的单独研究中所示的所有生理特征。
Many aphid species switch reproductive modes seasonally, with the sexual generations appearing in autumn. Sexual generations are induced by short days. It has been reported that the appearance of sexual morphs is suppressed by a transgenerational factor (a seasonal timer) over several generations after hatching from overwintered eggs. The present study examined whether the seasonal timer measures the number of days from hatching or the number of generations from hatching using the pea aphid,Acyrthosiphon pisumHarris (Homoptera: Aphididae). Effects of temperature and photoperiod on the seasonal timer were also examined by successive rearing. The ability to produce sexual morphs was strongly suppressed in stem mothers (the foundress generation), and gradually recovered over successive generations produced during a few months. The duration for which the seasonal timer could function depended on the number of days from hatching and temperature, but not on photoperiod or the number of generations from hatching. We thus showed in a single study that the seasonal timer of the pea aphid has all the physiological characteristics shown in separate studies in different aphid species.