| 意大利蝗的胚胎发育及卵滞育发生的胚胎发育阶段 |
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| 引用本文： | 任金龙,赵莉,葛婧. 意大利蝗的胚胎发育及卵滞育发生的胚胎发育阶段[J]. 昆虫学报, 2015, 58(11): 1201-1212 |
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| 作者姓名： | 任金龙 赵莉 葛婧 |
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| 作者单位： | （新疆农业大学农学院, 新疆农林有害生物监测与安全防控自治区重点实验室, 乌鲁木齐 830052） |
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| 摘 要： | 【目的】明确意大利蝗Calliptamus italicus (L.)胚胎发育及卵滞育发生的胚胎发育阶段。【方法】2013-2014年间，通过室外胚胎发育进度检测和室内孵化培养观察，研究其胚胎发育等级、滞育和越冬的胚胎阶段及自然越冬滞育的解除。【结果】意大利蝗的胚胎发育可划分为18个阶段；意大利蝗胚胎有反向移转、转旋和顺向移动3种胚胎转动方式；意大利蝗卵滞育发生的胚胎发育阶段为第Ⅻ阶段。自然条件下，意大利蝗卵发育至次年1月21日，仅部分卵解除滞育，解除滞育卵的发育历期最长；随着越冬时间的延长，解除滞育的卵逐渐增多，其发育历期逐渐缩短；直至次年3月29日卵基本完全解除滞育。意大利蝗雌成虫所产的早中期卵（7月27日-8月16日所产卵）以胚胎发育第Ⅻ阶段（滞育发生的胚胎发育阶段）越冬，于翌年4月16日（侯地温平均值：7.59℃，最高温：15.95℃，最低温：2.67℃）继续发育；雌成虫所产的晚期卵（8月28日-9月4日所产卵），自11月4日（侯地温平均值：7.32℃，最高温：9.00℃，最低温：5.18℃）开始以胚胎第Ⅹ阶段越冬，于翌年3月29日（侯地温平均值：3.78℃，最高温：10.27℃，最低温：0.14℃）继续发育。【结论】意大利蝗雌成虫所产的早中期和晚期卵，其越冬胚胎发育阶段、开始越冬时间及越冬后继续发育的时间均不同。
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| 关 键 词： | 意大利蝗 卵 胚胎发育 滞育 滞育解除 |
Embryonic development of diapausing eggs in Calliptamus italicus (L.) (Orthoptera: Catantopidae) |
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| REN Jin-Long,ZHAO Li,GE Jing. Embryonic development of diapausing eggs in Calliptamus italicus (L.) (Orthoptera: Catantopidae)[J]. Acta Entomologica Sinica, 2015, 58(11): 1201-1212 |
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| Authors: | REN Jin-Long ZHAO Li GE Jing |
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| Affiliation: | (Key Laboratory of the Pest Monitoring and Safety Control on the Crop and Forest at Universities of Xinjiang Uygur Autonomous Region, College of Agronomy, Xinjiang Agricultural University, Urumqi 830052) |
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| Abstract: | 【Aim】 This study aims to examine the embryonic development of overwintering eggs of Calliptamus italicus (L.) 【Methods】 We examined the embryonic development progress of diapausing eggs collected from the field and reared in the laboratory in 2013 and 2014. 【Results】 C. italicus eggs went through 18 stages during the embryonic development, including three blastokinesis movement, i.e., anatrepsis, revolution, and catatrepsis. Diapause mostly occurred at the 12th stage. The overwintering eggs resumed partly developing as early as on January 21st in the field, resulting in the longest developmental time, and their number decreased with prolonged overwintering-time of diapausing eggs until all the eggs terminated the diapause on March 29th. Eggs entered overwintering diapause at the 12th stage (diapause-incident stage) when they were laid at early-to-middle embryonic stages (from July 27th to August 16th and terminated the diapause on April 6th next year when the 5-day ground temperature was 2.67-15.95℃, with the average of 7.59℃. But eggs entered diapause at the 10th stage (November 4th, the 5-day temperature was 5.18-9.00℃, with the average of 7.32℃) when they were laid later (from August 28th to September 4th), and resumed development on March 29th (the 5-day ground temperature of 0.14-10.27℃, with the average of 3.78℃). 【Conclusion】 The time of C. italicus eggs entering and terminating diapause varies depending on the time when they are oviposited. |
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| Keywords: | Calliptamus italicus egg embryonic development diapause diapause termination |
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