ISSN 1362-1971
An international journal of the Systematic and Applied Acarology Society, published since 1996
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ISSN 1362-1971 An international journal of the Systematic and Applied Acarology Society, published since 1996 [Aims] [Editors] [Content] [Subscriptions] [Contact details] [Society Homepage] |
Systematic & Applied Acarology (2004) 9, 15-21Effect of different bamboo ages on population parameters of
Schizotetranychus bambusae Reck (Acari: Tetranychidae)HUAI LIU*, ZHIMO ZHAO, JINJUN WANG, LING HE, & SHIYUAN WU
College of Plant Protection, Southwest Agricultural University, Chongqing, 400716, China;
*corresponding author: e-mail redlx@swau.cq.cnAbstract
The survival and fecundity of the spider mite, Schizotetranychus bambusae Reck, on the detached leaves of the moso bamboo, Phyllostachys pubescens Mazel, from 1–4yr-old bamboo plants, were evaluated in the laboratory. The age-specific and time-specific life tables of the experimental populations of S. bambusae were constructed. The relationship between the population dynamics of this mite and 1–4yr-old bamboo plants was analyzed. The results showed that the survival of immature stages was 92.00%, 88.46%, 70.81%, and 94.34% when fed on the leaves from 1, 2, 3, and 4yr-old bamboo leaves, respectively. The mean number of eggs laid per female which were reared on leaves from four kinds of bamboo leaves, were 41.4, 37.3, 14.7, and 42.8, respectively. The trend index of population (I), net reproductive rate (R 0 ), intrinsic rate of increase (r m ) and finite rate of increase ( l) were 5.2073, 5.7719, 0.1117, 1.1182 on the 3yr-old bamboo leaves, respectively, and the population doubling time (DT) was the longest (6.2050d). However, when reared on the other three kinds of bamboo leaves (1, 2, and 4yr-old leaves), the values of the net reproductive rate (R 0 ) were 22.1223, 16.6168, and 18.2853, respectively. The results indicated that the 3yr-old bamboo was disadvantageous for the experimental population increase of S. bambusae.
Key words: Schizotetranychus bambusae Reck, Phyllostachys pubescens Mazel, fecundity, intrinsic rate of increase
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Last updated 31 July 2004
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