Laboratory studies on the effect of temperature and humidity on the life table of the whitefly, Aleurotuberculatus takahashi David & Subramaniam (Hom., Aleyrodidae) from southeastern China
文献类型： 外文期刊
第一作者： Sengonca, C
作者： Sengonca, C;Liu, B
作者机构：
期刊名称：ANZEIGER FUR SCHADLINGSKUNDE-JOURNAL OF PEST SCIENCE （ 影响因子：0.303； ）
ISSN： 1436-5693
年卷期： 1999 年 72 卷 2 期
页码：
收录情况： SCI
摘要： The present paper deals with developmental duration, emergence, longevity and fecundity of Aleurotuberculatus takahashi David & Subramaniam at different temperatures and humidity levels. The developmental time from egg to adult was 81.8, 56.9, 39.6, 29.9, 20.6 days at 15 +/- 1, 20 +/- 1, 25 +/- 1, 30 +/- 1, 35 +/- 1 degrees C under constant relative humidity (RH) of 70 +/- 5%, respectively. At 25 +/- 1 degrees C, the total developmental time was slightly affected by humidity, ranging from 46.4 days at 40 +/- 5% RH to 39.2 days at 90 +/- 5% RH. The developmental threshold and the thermal constant for the stage from egg to adult a;ere 10.1 degrees C and 542.8 day-degrees. It was estimated chat the whitefly has about 10 generations a year in Fuzhou region in southeastern China. Lowest mortality rates of 12.4% for the egg, 6.8% for the nymph and 3.1% for the puparium were obtained at 15 +/- 1 degrees C, while they were highest with 92.1% for the egg, 48.2% for the nymph and 36.3% for the puparium at 35 +/- 1 degrees C. The mortality rates were slightly affected by humidity, ranging from 17.6% at 40 +/- 5% RH to 27.9% at 90 +/- 5% RH for the egg, 11.2% at 40 +/- 5% RH to 19.6% at 90 +/- 5% RH for the nymph, and 6.4% at 40 +/- 5% RH to 11.6% at 90 +/- 5% RH for the puparium. The emergence rate of adults decreased as temperature increased, ranging from 89.1%6 at 15 +/- 1 degrees C to 21.5% at 35 +/- 1 degrees C, so did the longevity of adults, ranging from 9.6 days at 15 +/- 1 degrees C to 29 days at 35 +/- 1 degrees C. The number of eggs per female was sig nificantly affected by temperature (P.01), valuing 29.4 eggs per female at 15 +/- 1 degrees C, 36.7 at 20 +/- 1 degrees C, 52.4 at 25 +/- 1 degrees C, 42.9 at 30 +/- 1 degrees C, and 6.1 at 35 +/- 1 degrees C. The optimal temperature for reproduction was about 25 degrees C.
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