文献类型：期刊文献

中文题名：花绒寄甲对松褐天牛预蛹的寄生作用研究

英文题名：Parasitism of Prepupae of Monochamus alternatus(Coleoptera:Cerambycidae)by Dastarcus helophoroides(Coleoptera:Bothrideridae)

作者：王丽娜[1] 曹平[2] 唐艳龙[1] 钱正敏[1] 刘玲玲[1] 魏可[3] 张彦龙[3]

第一作者：王丽娜

机构：[1]遵义师范学院生物与农业科技学院,遵义563002;[2]江西省都昌县自然资源局,九江332600;[3]中国林业科学研究院森林生态环境与自然保护研究所/国家林业和草原局森林保护学重点实验室,北京100091

年份：2025

卷号：41

期号：3

起止页码：674-679

中文期刊名：中国生物防治学报

外文期刊名：Chinese Journal of Biological Control

收录：;北大核心:【北大核心2023】；

基金：中国林科院基本科研业务费(CAFYBB2021ZG001);贵州省教育厅自然科学研究项目(黔教技-2023-043号)。

语种：中文

中文关键词：花绒寄甲;松褐天牛;预蛹;寄生率

外文关键词：Dastarcus helophoroides;Monochamus alternatus;prepupae;parasitism rate

分类号：S476.2

摘要：花绒寄甲是松褐天牛的有效天敌,为明确花绒寄甲对松褐天牛预蛹的寄生作用,本文在室内按益害比6:1、8:1和10:1接种花绒寄甲初孵幼虫至松褐天牛预蛹体表,观察比较花绒寄甲的发育历期和后代数量等指标,并开展林间释放试验。结果表明:室内三种接种比例下花绒寄甲对松褐天牛预蛹的寄生率分别为85%、90%和75%。不同接种比例下,花绒寄甲幼虫的发育历期为7~11 d,各接种比例间差异不显著;但蛹的发育历期差异显著,分别平均为26.24 d、25.28 d和22.67 d。单个寄主预蛹产生的花绒寄甲结茧数和羽化数差异显著,平均结茧数分别为4.29个、4.94个和6.93个,平均羽化数分别为4.00个、4.89个和6.73个。各接种比例下花绒寄甲幼虫的结茧率差异不显著。单个寄主预蛹产生的花绒寄甲成虫总重量分别为0.092 g、0.097 g和0.079 g,差异不显著;成虫单头重差异显著,益害比6:1时和8:1时,分别为0.024 g/头和0.020 g/头,差异较小,10:1时,显著下降至0.013 g/头。野外条件下3个接种比例花绒寄甲对松褐天牛预蛹的寄生率差异显著,益害比10:1时,校正寄生率最高,平均为72.29%;8:1时,下降至48.55%;6:1时最低,为40.63%。研究结果表明花绒寄甲对松褐天牛预蛹寄生作用强,野外释放时,益害比例不应低于10:1。
Dastarcus helophoroides is an effective natural enemy of Monochamus alternatus.This study investigated parasitism of prepuae of M.alternatus by D.helophoroides through inoculation of newly hatched D.helophoroides larvae onto the surface of M.alternatus prepupae at ratios of 6:1,8:1,and 10:1 under controlled laboratory conditions and compared development period and offspring numbers of D.helophoroides.Further,a forest release experiment was conducted.The results showed that,under the three inoculation ratios,D.helophoroides parasitism rates of M.alternatus prepupae were 85%,90%,and 75%,respectively.The larval developmental period of D.helophoroides ranged from 7 to 11 days,with no significant differences across the inoculation ratios.However,a significant difference was observed in the pupal duration,which averaged 26.24 days,25.28 days,and 22.67 days for the 6:1,8:1,and 10:1 inoculation ratios,respectively.The number of cocoons and the emergence rate also showed significant differences:the average number of D.helophoroides cocoons per prepupa was 4.29,4.94,and 6.93,respectively,while the emergence number was 4.00,4.89,and 6.73 per prepupa,respectively.The cocooning rate of D.helophoroides did not differ significantly among the inoculation ratios.The total weight of D.helophoroides adults produced from a single prepupa was 0.092 g,0.097 g,and 0.079 g,with no significant differences between the groups.The average weight of a single D.helophoroides adult was 0.024 g and 0.020 g for the 6:1 and 8:1 ratios,respectively,and was 0.013 for the 10:1 ratio,which was a significant decrease from the other two ratios.In the fields,the D.helophoroides parasitism rate of M.alternatus prepupae varied significantly across the inoculation ratios.When the beneficial-to-pest ratio was 10:1,the corrected parasitism rate was the highest,averaging 72.29%.At 8:1,it dropped to 48.55%,and at 6:1,the rate was the lowest,at 40.63%.These findings indicate that D.helophoroides exerts a strong parasitism of M.alternatus prepupae,and a beneficial-to-pest ratio of at least 10:1 in releasing D.helophoroides is recommended for optimal control of M.alternatus.