Study on the Relationship between Growth and Environmental
Temperature of Rhizophagus grandis (Coleoptera: Rhizophagidae),
An Important Predator of Dendroctonus valens (Coleoptera: Scolytidae)

WEI Jian-rong; DING Bao-fu; TANG Yan-long; ZHAO Jian-xing; YANG Zhong-qi

Rhizophagus grandis (Coleoptera: Rhizophagidae) is an important predator of Dendroctonus valens which is an invasive alien pest attacking pine trees in China. It was first introduced into China in 2000 and mass rearing techniques had been developed by the authors since then. This paper dealed with the study on the developmental threshold temperature and the effective accumulated temperature of R. grandis. The result showed that the developmental threshold temperatures of egg, larva and pupae were 3.59±2.92 ℃, 1.96±0.73 ℃ and 9.27±1.19 ℃ respectively, and the effective accumulated temperatures were 98.32±16.26 degree-day, 296.94±12.45 degree-day and 449.67±53.19 degree-day respectively. Therefore, the total effective accumulated temperature from egg to pupa was 844.93 degree-day.

Study on the Relationship between Growth and Environmental Temperature of Rhizophagus grandis (Coleoptera: Rhizophagidae), An Important Predator of Dendroctonus valens (Coleoptera: Scolytidae)

1. Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry

2. Key Laboratory of Forest Protection, State Forestry Administration, Beijing 100091, China

3. Colleage of Life Sciences, Hebei University, Baoding 071002, Hebei,China

Abstract: Rhizophagus grandis (Coleoptera: Rhizophagidae) is an important predator of Dendroctonus valens which is an invasive alien pest attacking pine trees in China. It was first introduced into China in 2000 and mass rearing techniques had been developed by the authors since then. This paper dealed with the study on the developmental threshold temperature and the effective accumulated temperature of R. grandis. The result showed that the developmental threshold temperatures of egg, larva and pupae were 3.59±2.92 ℃, 1.96±0.73 ℃ and 9.27±1.19 ℃ respectively, and the effective accumulated temperatures were 98.32±16.26 degree-day, 296.94±12.45 degree-day and 449.67±53.19 degree-day respectively. Therefore, the total effective accumulated temperature from egg to pupa was 844.93 degree-day.

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Reference (17)

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Study on the Relationship between Growth and Environmental Temperature of Rhizophagus grandis (Coleoptera: Rhizophagidae), An Important Predator of Dendroctonus valens (Coleoptera: Scolytidae)

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References

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