Effect of Temperatures and Cold Storage on Performance of Tetrastichus brontispae (Hymenoptera: Eulophidae), a Parasitoid of Brontispa longissima (Coleptera: Chrysomelidae)
文献类型: 外文期刊
作者: Liu, Kui 1 ; Fu, Buli 1 ; Lin, Jiangrong 2 ; Fu, Yueguan 1 ; Peng, Zhengqiang 1 ; Jin, Qi'an 1 ;
作者机构: 1.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Peoples R China
2.Agr Univ South China, Coll Anim Sci, Guangzhou 520000, Guangdong, Peoples R China
关键词: biological control;development;parasitism;parasitoid;progeny
期刊名称:JOURNAL OF INSECT SCIENCE ( 影响因子:1.857; 五年影响因子:1.904 )
ISSN: 1536-2442
年卷期: 2014 年 14 卷
页码:
收录情况: SCI
摘要: Laboratory studies were conducted to determine the effect of temperature and cold storage on the performance of Tetrastichus brontispae (Ferriere) (Hymenoptera: Eulophidae), one of the major endoparasitoids against coconut hispine beetle, Brontispa longissima (Gestro) (Coleptera: Chrysomelidae). The results revealed that T. brontispae could successfully parasitize host pupae under all seven tested temperatures, but no adult emergence was observed at 32 degrees C. It was also revealed that temperatures between 24 and 26 degrees C appeared to be the optimum temperatures for parasitism, as these temperatures resulted in the most parasitized pupae and a significantly higher emergence rate and progeny production. These measurements significantly declined at 20, 30, and 32 degrees C. This study confirmed developmental periods of parasitoid progeny decreased as the temperature increased, and sex ratio of this female-biased parasitoid was not affected by rearing temperatures. More importantly, this study indicated that cold storage of parasitized pupae could extend up to 30 d at 10 degrees C, and a longer storage period had a significant adverse effect on mean adult emergence and parasitism performance. Ten days might be the optimum cold-storage period at 10 degrees C, as parasitism performance, emergence rate, and progeny production at this storage period were similar to the control of 26 degrees C. Furthermore, the developmental period, emergence rate, and sex ratio of progeny that emerged from cold-stored parasitized pupae were not influenced by storage periods, whereas parasitism performance of progeny decreased as storage period increased. This study suggests that about 24-26 degrees C would be the optimal temperature for mass production and release of T. brontispae for biological control of B. longissima. These results also provide novel findings that a period of 10 d at 10 degrees C may be more suitable and acceptable for ideal cold storage of parasitized pupae of T. brontispae.
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