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花绒寄甲对松褐天牛的室内及林间寄生效果

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为明确花绒寄甲对松褐天牛的寄生效果,采用松褐天牛幼虫接种花绒寄甲幼虫、卵块,以及林间释放花绒寄甲成虫和卵卡的方法,研究花绒寄甲对松褐天牛室内及林间寄生效果.研究结果显示:每头松褐天牛幼虫接种6头花绒寄甲幼虫,平均校正寄生率为(85.39±4.61)%;每头松褐天牛幼虫接种花绒寄甲卵30粒,平均校正寄生率为(90.00±0.00)%.林间在松褐天牛危害的马尾松虫害木上,释放花绒寄甲成虫和卵卡,总校正寄生率分别为65.90%和54.74%.在室内条件下,花绒寄甲幼虫对于近距离处的寄主具有较强的寄生能力,而在林间,花绒寄甲对松褐天牛的寄生作用则受到多种因素的影响.
Parasitism rate of Dastarcus helophoroides on Monochamus alternatus with indoor condition and under forests environment
Dastarcus helophoroides larvae and eggs were inoculated to Monochamus alternatus larvae in indoor condition, and D. helophoroides adults and egg cards were released on the infested pine logs in forest, to study the parasitism rate of D. helophoroides on M. alternatus. The results showed that: the average corrected parasitism rate was (85. 39 ±4. 61)% and (90. 00 ± 0.00) % for inoculating 6 D. helophoroides larvae and 30 D. helophoroides eggs to 1 M. alternatus larvae respectively. The total corrected parasitism rate was 65. 90% and 54. 74% for the releasing D. elophoroides adults and egg cards on the infested pine logs in forest respectively. D. helophoroides larvae had strong parasitic ability on the nearby hosts in indoor conditions. However, the parasitic activities of D. helophoroides on M. alternatus were influenced by many factors in forest.

Dastarcus helophoroidesMonochamus alternatusparasitism ratein indoor conditionin forest

董广平、李晓娟、杨李、郭婉琳

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安徽省林业科学研究院森林保护研究所,合肥230031

花绒寄甲 松褐天牛 寄生率 室内 林间

安徽省自然科学基金安徽省科技攻关计划安徽省林业科学研究院博士科研启动基金

1208085QC7210010302001

2013

林业工程学报
南京林业大学

林业工程学报

CSTPCD北大核心
影响因子:0.742
ISSN:2096-1359
年,卷(期):2013.27(2)
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