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Population Parameters of Aphis gossypii (Homoptera: Aphididae) Fed on Melon at Different Temperature
Survival rate (lx) of Aphis gossypii fed on Cucumis melo at f constant temperatures. non-reproductive stage,reproductive stage
Survival rate (lx) of Aphis gossypii fed on Cucumis melo at f constant temperatures. non-reproductive stage,reproductive stage

Author:Jih-Zu Yu* and Bing-Huei Chen

Abstract:

    The population parameters of Aphis gossypii Glover on Cucumis melo L. cv. Autumn Favor leaf were estimated at four constant temperatures (15, 20, 25 and 30℃).  Temperature-dependent of development rate from birth to the onset of reproduction (non-reproductive stage) fitted a linear regression, and with 30℃ as the optimal temperature for development.  The lower threshold temperature and thermal summation was 2.22℃ and 143.05 degree days, respectively.  No difference existed in the intrinsic (r) and finite (λ) rate of natural increase at 20, 25, 30℃, ranging 0.350-0.323 d-1 and 1.419-1.381 d-1, respectively.  Therefore, the optimal temperature for its population growth should be in 20-30℃.  However, the net reproductive rate (R0) and time taken for double mass of a population (DT) at 30℃ were lower than those at both 20 and 25℃.

Key words:Aphis gossypii, Cucumsi melo, Life table, Population parameter, Temperature

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Journal of
Taiwan Agricultural Research
Vol. 72, No.3 (2023) ISSN: 2790-086X Vol. 72, No.3 (2023)
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