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Effects of temperature and supplementary food on the development and fecundity of the Eulophid parasitoid Tetrastichus howardi on Spodoptera frugiperda (Lepidoptera: Noctuidae)

文献类型： 外文期刊

作者： Yan, Sanqiang 1 ; Su, Hao 1 ; Lyu, Baoqian 1 ; Lu, Hui 1 ; Tang, Jihong 1 ; Zhuo, Zhihang 3 ; Yang, Fan 3 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Integrated Pest Management Trop Crops, Haikou, Hainan, Peoples R China

3.Hainan Univ, Coll Forestry, Haikou, Hainan, Peoples R China

4.Hainan Univ, Coll Plant Protect, Haikou, Hainan, Peoples R China

关键词： Endoparasitoid; Spodoptera frugiperda; parasitism; life cycle; biological control

期刊名称：INTERNATIONAL JOURNAL OF PEST MANAGEMENT （ 影响因子：1.907； 五年影响因子：1.849 ）

ISSN： 0967-0874

年卷期：

页码：

收录情况： SCI

摘要： Tetrastichus howardi (Olliff), a pupal endoparasitoid of the major agricultural pest Spodoptera frugiperda (J.E. Smith). Laboratory studies were conducted to determine the effect of the temperature and supplementary food on the development and reproduction of this parasitoid on S. frugiperda pupae. The results revealed that T. howardi could complete the life cycle under all five tested temperatures (18, 22, 26, 30 and 34 degrees C), with the most extended longevity (female: 42.83 days; male: 24.37 days) and the most prolonged developmental duration (egg-adult) (52.33 days) at 18 degrees C. Parasitoids that were kept at 26 degrees C had the greatest parasitism rate (72.67%) and the highest net reproductive rate R-0 (56.35), and those maintained at 34 degrees C had the highest emergence rate (92.03%), the greatest number of emerged progeny (58.40) and the highest intrinsic rate of increase r(m) (0.310 d(-1)). Feeding on honey, glucose, and sucrose significantly increased the adult longevity and the progeny production of T. howardi but showed no significant effects on parasitism rate, emergence rate, the developmental duration of progeny, or sex ratio. Parasitoids that fed on glucose lived the longest (21.23 days), and the highest emerged offspring occurred when honey is provided (57.77). These results are instructive for the mass-rearing of T. howardi and field control of S. frugiperda.

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