| 莲草直胸跳甲生殖系统与繁殖特性研究 |
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| 引用本文： | 陈磊,蔡笃程,陈青,唐超,冯岗,彭正强,金启安,温海波.莲草直胸跳甲生殖系统与繁殖特性研究[J].昆虫学报,2009,52(11):1255-1260. |
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| 作者姓名： | 陈磊 蔡笃程 陈青 唐超 冯岗 彭正强 金启安 温海波 |
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| 作者单位： | 1. 中国热带农业科学院环境与植物保护研究所/农业部热带农林有害生物入侵监测与控制重点开放实验室,海南儋州,571737
2. 海南大学环境与植物保护学院,海南儋州,571737 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家科技支撑计划 |
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| 摘 要： | 为了解与莲草直胸跳甲Agasicles hygrophila繁殖密切相关的结构与行为特性, 结合显微解剖和室内观察, 对该跳甲雌雄成虫的生殖系统构造、雌成虫卵巢发育进度以及繁殖特性进行了研究。结果表明：莲草直胸跳甲雌性生殖系统包括卵巢、侧输卵管、中输卵管、受精囊及其附腺, 左右卵巢一般不对称, 单侧有12~16根卵巢管, 受精囊豆芽状, 卵巢管为端滋式; 雄性生殖系统由睾丸、侧输精管及附腺、射精管和阳茎及附属器官组成, 阳基叉式。根据相关形态特征, 卵巢发育进度可分为发育初期(Ⅰ级)、卵黄沉积前期(Ⅱ级)、成熟待产期(Ⅲ级)、产卵盛期(Ⅳ级)和产卵末期(Ⅴ级)5个级别, 各等级在卵巢分区长度（原卵区、生长区和成熟区）及怀卵量上存在显著差异。成虫羽化2 d后即可进行交配, 16：00-18：00时为交配高峰期, 雌成虫产卵高峰期12：00-16：00时, 且偏好在寄主植株中部偏上叶片背部产卵; 22~32℃时, 雌性成虫的寿命和产卵总量随温度的上升而逐渐下降, 25~30℃间差异不显著, 但32℃时产卵前期延长至7.2 d, 寿命和产卵量显著下降, 表明32℃不利于莲草直胸跳甲繁殖。因此, 推测32℃及以上持续高温造成的子代卵量急剧减少, 可能是该跳甲夏季田间种群数量下降的原因之一。
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| 关 键 词： | 莲草直胸跳甲 生殖系统 卵巢发育 繁殖 生物防治 |
The reproductive system and reproductive biology of the alligatorweed flea beetle,Agasicles hygrophila (Coleoptera:Chrysomelidae) |
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| CHEN Lei,CAI Du-Cheng,CHEN Qing,TANG Chao,FENG Gang,PENG Zheng-Qiang,JIN Qi-An,WEN Hai-Bo.The reproductive system and reproductive biology of the alligatorweed flea beetle,Agasicles hygrophila (Coleoptera:Chrysomelidae)[J].Acta Entomologica Sinica,2009,52(11):1255-1260. |
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| Authors: | CHEN Lei CAI Du-Cheng CHEN Qing TANG Chao FENG Gang PENG Zheng-Qiang JIN Qi-An WEN Hai-Bo |
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| Abstract: | In order to identify organs and behavior closely related to reproduction, observations on reproductive system and reproductive biology of the alligatorweed flea beetle, Agasicles hygrophila were conducted in the laboratory. The results showed that the female adult have 2 ovaries, each of which contains 12 -16 telotrophic ovarioles, spermatheca is in the shape of bean sprout, and the aedeagus is fork-type. Ovarian development can be divided into 5 grades based on the morphological characteristics of ovaries: stage Ⅰ (No oocyte stage), stage Ⅱ (Previtellogenic stage), stage Ⅲ (Egg maturation stage), stage Ⅳ (Ovipositing stage), and stage V (Post-oviposition stage). Each stage shows significant differences in the length of ovarian zones and egg-carrying number. In addition, the beetles could mate around 2 d after emergence, a copulation peak appears on 16:00-18:00, the oviposition peak occurrs on 12:00-16:00, and the beetles prefer to the blade back of leaf in the middle stratum of host. Temperature had a significant effect on longevity and fecundity. Female longevity and fecundity decreased with increasing of the temperature within 22-32℃, and temperatures below 22℃ or above 32℃ were unfavorable for ovarian development. At 32℃, the pre-oviposition period extended to 7. 2 d, while the longevity and fecundity decreased significantly. Therefore, it is inferred that high and constant temperature above 32℃ is a possible cause for the population decay of the alligatorweed flea beetle in summer. |
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| Keywords: | Agasicks hygrophila reproductive system ovarian development reproduction biological control |
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