Influence of temperature on bionomics of cotton aphid, Aphis gossypii, on cotton
文献类型: 外文期刊
第一作者: Xia, JY
作者: Xia, JY;van der Werf, W;Rabbinge, R
作者机构:
关键词: Aphis gossypii;development;survival;fecundity;intrinsic rate of increase;life table;temperature
期刊名称:ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA ( 影响因子:2.25; 五年影响因子:2.184 )
ISSN: 0013-8703
年卷期: 1999 年 90 卷 1 期
页码:
收录情况: SCI
摘要: Life table parameters of Aphis gossypii Glover (Homoptera: Aphididae) on Gossypium hirsutum L. were determined at six temperatures (10, 15, 20, 25, 30, and 35 +/- 0.5 degrees C) in the laboratory. Relationships of life table parameters with temperature were described with mathematical equations. Development was fastest at 30 OC, with a pre-larviposition period of 4.6 d. Survival to adult was greatest at 25 degrees C (81%). Fecundity was highest at 95 degrees C, with a total fecundity of 28.3 nymphs per female and a mean reproductive rate of 3.1 nymphs per female per day. Threshold temperatures for development in the first through fourth instar and the adult were 8.2, 8.0, 7.2, 6.2 and 7.9 degrees C, respectively. The durations of these stages, expressed as temperature sums above these thresholds, were 24.2, 23.7, 23.0, 25.5 and 168.8 degree-days (D degrees), respectively. A. gossypii achieved its maximum net reproductive number (24.4 nymphs per female) and greatest intrinsic rate of increase (0.386 d(-1)) at 25 degrees C. The high relative rate of population increase at 25 degrees C results in a daily population increase of 47% and a doubling time of only 1.8 d, illustrating the tremendous growth capacity of A. gossypii populations under favourable conditions. Compared to literature sources, our sourer of A. gossypii, fed on cotton, showed a comparatively great heat tolerance.
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