水浸对越北腹露蝗卵的影响
Effect of immersion in water on egg survival in the grasshopper Fruhstorferiol a tonkinensis
刘 婷1，张振飞1,2，吴伟坚1**
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作者单位：1.华南农业大学昆虫生态研究室 广州 510642； 2广东省农业科学院植物保护研究所 广州 510640
中文关键词：越北腹露蝗, 卵, 滞育, 浸水
英文关键词：Fruhstorferiola tonkinensis, egg, diapause, water immersion
中文摘要： 越北腹露蝗Fruhstorferiola tonkinensis Will.是广东北江流域河滩蝗虫的优势种。 以不浸水的蝗卵为对照，研究滞育期蝗卵浸水5～95 d和胚胎发育期蝗卵浸水1～30 d 对 卵孵化率和历期的影响。结果表明，随浸水时间的增加，孵化率下降，卵发育延迟；滞育期蝗卵经受95 d的浸水仍有8.01%存活，而胚胎发育期蝗卵浸水30 d后全部死亡，滞育期蝗卵比 胚胎发育期蝗卵具有更强的耐浸水能力。说明越北腹露蝗以卵滞育的形式发展了对水浸胁迫 的适应。
英文摘要： Fruhstorferiola tonkinensis Will.(Orthoptera: Catantopidae) is a dominant gr asshopper species along Beijiang River bank, Guangdong, China. Influences of sim ulated flooding on F. tonkinensis eggs were investigated. Eggs in diapause w ere immersed in water for 5 to 95 days, and eggs in embryonic developmental stage we re treated for 1 to 30 days. Hatching success decreased and incubation time incr eased with the duration of immersion increased. After immersed 30 days, all eggs in embryonic developmental stage died. The survival rate of diapause eggs treat ed 95 days was still 8。01%. It indicated that there was higher immersionresis ta nt in diapause eggs than those in embryonic developmental stage. It implied that egg diapause of F. tonkinensis is one of the adaptation strategies to the a dverse conditions in its lifecycle.