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Issue:ISSN 2095-1353
           CN 11-6020/Q
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Your Position :Home->Past Journals Catalog->2009年46 No.6

Effect of immersion in water on egg survival in the grasshopper Fruhstorferiol a tonkinensis
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Key Words:Fruhstorferiola tonkinensis, egg, diapause, water immersion
Abstract:         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 immersionresis 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.
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