Effects of photoperiod, temperature, and host plant age on induction of reproductive diapause and development time in Danaus plexippus
Effects of photoperiod, temperature, and host plant age on induction of reproductive diapause and development time in Danaus plexippus
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DOI：
10.1046/j.1365-2311.2002.00454.x
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发表时间：
2002-12-01
影响因子：
2.2
通讯作者：
Oberhauser, KS
中科院分区：
文献类型：
--
作者：
Goehring, L;Oberhauser, KS
1.研究了从明尼苏达州和威斯康星州野外捕获的斑蝶成虫以及在室外和受控条件下饲养的斑蝶个体的滞育诱导。雌鼠卵母细胞的存在和雄鼠射精管的质量被用来指示生殖状态.部分野生个体在8月中旬进入滞育状态，所有雄性和雌性个体分别在8月下旬和9月上旬进入滞育状态。4.在日长递减和温度波动条件下饲养的个体比在长日长或短日长或恒温条件下饲养的个体更容易滞育。个体喂食盆栽老的萝摩比喂食盆栽年轻的寄主植物更可能处于滞育状态;当使用从田间或温室盆栽中剪下的萝摩时，没有寄主植物年龄的影响。极高的温度增加了从卵到成虫发育所需的日度数，而日长的减少和较老的宿主植物往往会减少发育所需的日度数。帝王蝶的生殖发育似乎是连续的，在夏末，平均射精管质量和卵母细胞产量逐渐下降。没有一个实验处理导致100%滞育，滞育更容易发生在帝王蝶进行一个以上的滞育诱导线索。
1. Diapause induction in monarch butterflies Danaus plexippus was studied using adults captured from the wild in Minnesota and Wisconsin, and individuals reared under outdoor and controlled conditions.2. Oocyte presence in females and ejaculatory duct mass in males were used to indicate reproductive status.3. Some wild individuals were in diapause in mid-August, and all males and females were in diapause by late August and early September respectively.4. Individuals reared under decreasing day lengths and fluctuating temperatures were more likely to be in diapause than were individuals reared under long or short day lengths or constant temperatures.5. Individuals fed potted old Asclepias curassavica plants were more likely to be in diapause than were those fed potted young host plants; when cuttings of Asclepias syriaca plants from the field or greenhouse pots were used, there was no effect of host plant age.6. Extremely high temperatures increased the number of day-degrees required for development from egg to adult, while decreasing day lengths and older host plants tended to decrease the number of day-degrees required for development.7. There appears to be a continuum of reproductive development in monarchs, with gradual declines in mean ejaculatory duct mass and oocyte production during the late summer.8. None of the experimental treatments led to 100% diapause, and diapause was more likely to occur in monarchs subjected to more than one diapause-inducing cue.