Effect of temperature on development and reproduction of Proprioseiopsis asetus (Acari: Phytoseiidae) fed on asparagus thrips, Thrips tabaci
文献类型: 外文期刊
第一作者: Huang, Jian Hua
作者: Huang, Jian Hua;Wang, Li Si;Qin, Wen Jing;Chen, Hong Fan;Qin, Hou Guo;Freed, Shoaib
作者机构:
关键词: Proprioseiopsis asetus;Thrips tabaci;Temperature;Development;Asparagus;Fecundity
期刊名称:EXPERIMENTAL AND APPLIED ACAROLOGY ( 影响因子:2.132; 五年影响因子:2.196 )
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年卷期:
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收录情况: SCI
摘要: Thrips tabaci Lindeman (Thysanoptera: Thripidae) is one of the most important pests of asparagus in China. In this study the effects of five constant temperatures (15, 20, 25, 30 and 35 A degrees C) on the growth, survivorship and reproduction of Proprioseiopsis asetus (Chant) (Acari: Phytoseiidae) fed on T. tabaci was examined under laboratory conditions. Development time of immatures decreased with increasing temperature. The lower egg-to-adult developmental threshold (T (0)) and thermal constant (K) of P. asetus were estimated at 15.2 A degrees C and 75.8 degree days by means of a linear model. Fertilized females fed on T. tabaci produced offspring of both sexes, whereas the offspring sex ratio [a (TM) Euro/(a (TM) EuroA + a (TM),)] of P. asetus at 20-35 A degrees C was female-biased (0.68-0.78) and not significantly influenced by temperature. Survivorship during immature development was significantly influenced by temperature, and was especially low at 15 A degrees C. Pre- and post-oviposition periods of fertilized females shortened with the increase in temperature. The longest oviposition period was 20.4 days, at 25 A degrees C, whereas at 15 A degrees C the mites did not reproduce. Maximum average life time fecundity and mean daily fecundity was recorded at 25 and 35 A degrees C, respectively; the intrinsic rate of increase ranged from 0.05 (20 A degrees C) to 0.17 (35 A degrees C). The results indicate the capability of P. asetus to develop and reproduce at a broad range of temperatures, especially above 25 A degrees C, which can be used for better management of T. tabaci in asparagus.
分类号: Q959
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