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Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
Your Position :Home->Past Journals Catalog->2010年47 No.4

Distribution frequencies of phenotypes of Propylea japonica among different host crops and their predation responses
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Key Words: Propylea japonica, phenotypes, host crops, frequency distribution, predation response
Abstract:The frequencies of different phenotypes of Propylea japonica (Thumberg) collected in broad bean, wheat and corn fields were surveyed, and their responses to predation were investigated. The results show that five phenotypes, ancora, dionea, feliciae, tessellate and marginata, occurred in these crops. Ancora was the predominant phenotype in all three crops comprising 44.87% of the population, whereas marginata was the least abundant comprising just 0.60%. The proportion of females in these four main phenotypes ranged from 30.47% to 60.71%; less than 50% of ancora individuals were female. The results also indicate that the voracity, daily weight gain and feeding efficiency of females were higher than those of males feeding on the same food. The voracity of ancora males was higher than of feliciae males, and the feeding efficiency of feliciae females was higher than that of dionea females.
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