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Chinese Journal Of Biological Control ›› 2019, Vol. 35 ›› Issue (6): 841-847.DOI: 10.16409/j.cnki.2095-039x.2019.05.016

• RESEARCH REPORTS • Previous Articles     Next Articles

Effects of Different Hosts on the Development and Cold Hardiness of Dastarcus helophoroides (Fairmaire)

LUO Liping1,2, DANG Yingqiao1, ZHANG Yanlong1, WANG Xiaoyi1, YANG Zhongqi1, ZHAO Jianxing2   

  1. 1. The Key Laboratory of Forest Protection, State Forestry and Grassland Administration/Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;
    2. College of Agronomy, Inner Mongolia Agricultural University, Hohhot 010019, China
  • Received:2019-03-21 Online:2019-12-08 Published:2019-12-18

Abstract: Development and cold hardiness of Dastarcus helophoroides (Fairmaire) were assessed using hosts of Zophobas morio pupae and Thyestilla gebleri and Monochamus alternatus larvae. The results showed that there were no significant differences in the resulting number of D. helophoroides adult between the host treatments, while the parasite's larval duration, pupal duration, and adult body length, weight and supercooling point showed significant differences. When Z. morio pupae were used as host, the predator's larval duration (10.58 d) and pupal duration (30.17 d) were the longest, adult body length (8.68 mm) was the longest, adult weight (360.22 mg) was the heaviest, and adult supercooling point (-18.81℃) was the lowest. In contrast, when T. gebleri larvae were used as host, the predator's larval duration (8.94 d) and pupal duration (22.84 d) were the shortest, adult body length (6.33 mm) was the shortest, adult weight (184.38 mg) was the lightest, and adult supercooling point (-16.50℃) was the highest. Compared with T. gebleri and M. alternatus, Z. morio is an ideal alternative host that can produce larger and more cold-resistant D. helophoroides adults.

Key words: Dastarcus helophoroides, substitutive host, Thyestilla gebleri, Monochamus alternatus, supercooling point

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