Analysis of Factors Inducing Alatae in Aphis glycines
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The effects of crowding, quality of host plant, temperature, and aphid types on the induction of alatae in soybean aphid (Aphis glycines) were investigated in this paper. This study shows that the crowding in the apterous adults is the major factor causing the formation of the alatae aphids in the next generation. In low aphid densities, the crowding effect is strengthened as the density increases, whereas overcrowding weakens the crowding effect. However, the crowding in young apterae would not develop them into alatae. The quality of host plant has an impact on the apterae’s reaction to crowding. With the crowding density of two apterae per bottle, the percentage of winged offspring is higher when treated with mature leaflets than treated with young leaflets or control treatment (without leaflets). Furthermore, starvation cannot enhance the formation of alatae. A. glycines wing induction is also influenced by temperature in that 30oC and 25oC have a stronger inhibitory effect on the production of alatae than 21oC. The ability of producing winged morphs varies among different types of parent A. glycines. Crowding in the alatae also can induce alatae in offspring, although the sensitivity to crowding is lower than that of apterae.
Originating text in Chinese.
Citation: Lãœ, Li-Hua, Chen, Rui-Lu. (1993). Analysis of Factors Inducing Alatae in Aphis glycines. Kun chong xue bao.Acta entomologica Sinica, 36, 143-149.
Originating text in Chinese.
Citation: Lãœ, Li-Hua, Chen, Rui-Lu. (1993). Analysis of Factors Inducing Alatae in Aphis glycines. Kun chong xue bao.Acta entomologica Sinica, 36, 143-149.
Keywords
Aphis glycines, Alatae dimorphism, Crowding, Quality of host plant, Temperature
