瓜实蝇龄期和密度对蝇蛹金小蜂寄生能力的影响  

The Impacts of Host Ages and Host Density on the Parasitizing of Pachycrepoideus vindemmiae Rondani on the Pupae of Bactrocera cucurbitae Coquillett

作　　者：黄文枫[1] 唐良德[2] 赵海燕[3] HUANG Wenfeng;TANG Liangde;ZHAO Haiyan(Vegetable Research Institute,Hainan Academy of Agricultural Sciences,Haikou,Hainan 571100,China;Environment and Plant Protection Institute,Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Pests Comprehensive Management for Tropical Crops,Ministry of Agriculture,Haikou,Hainan 571101,China;Institute of Plant Protection,Hainan Academy of Agricultural Sciences/Scientific Observation and Experiment Station of Crop Pests in Haikou,Ministry of Agriculture/Hainan Key Laboratory for Control of Plant Diseases and Pests,Haikou,Hainan 571100,China)

机构地区：[1]海南省农业科学院蔬菜研究所,海南海口571100 [2]中国热带农业科学院环境与植物保护研究所/农业部热带作物有害生物综合治理重点实验室,海南海口571101 [3]海南省农业科学院植物保护研究所/农业部海口作物有害生物科学观测实验站/海南省植物病虫害防控重点实验室,海南海口571100

出　　处：《热带作物学报》2018年第9期1807-1812,共6页Chinese Journal of Tropical Crops

基　　金：中国热带农业科学院基本科研业务费专项(No.1630042017025);海南省重点研发计划项目(No.ZDYF2016037);省属科研院所技术开发专项(No.KYYS-2018-10)

摘　　要：蝇蛹金小蜂是蝇类害虫重要的蛹期寄生性天敌,为了评价其对蔬菜上重要害虫瓜实蝇的控害潜能,本文就蝇蛹金小蜂对瓜实蝇蛹的寄生潜能进行了研究,建立了功能反应和干扰效应数学模型。结果表明,蝇蛹金小蜂对不同蛹龄瓜实蝇蛹的寄生功能反应均符合HollingⅡ模型,但不同蛹龄之间的功能反应参数存在差异。蝇蛹金小蜂对2日龄、4日龄和6日龄瓜实蝇蛹的模拟方程分别为Na=0.478 0N0/(1+0.010N0)、Na=0.474 0N0/(1+0.008 6N0)和Na=0.476 4N0/(1+0.009 9N0)。蝇蛹金小蜂自身密度也会对寄生产生一定的干扰效应,用Hassell-Varley模型拟合,蝇蛹金小蜂干扰效应方程可表示为:a=0.071 9P–0.252 6。Pachycrepoieus vindemmiae Rondani is one of the most important natural enemies of fruit fly pupae. In order to elevate the biological capacity of P. vindemmiae, the parasitic efficiencies of P. vindemmiae against different host stages（2, 4, and 6 days old） were evaluated in our laboratory. A functional response model and a disturbance hypothesis model were set up. The results showed that the pupa density significantly affected the parasitism of P. vindemmiae. At different host days, the parasitic functional response of parasitoids to hosts fitted Holling Ⅱ type without exception, but the functional response parameter at the variety of different host ages was different. The functional response of P. vindemmiae to 2, 4, and 6-day-old B. cucurbitae hosts was expressed as Na=0.478 0 N0/（1＋0.010 N0）, Na= 0.474 0 N0/（1＋0.008 6 N0） and Na=0.476 4 N0/（1＋0.009 9 N0）, respectively. In addition, the density of parasitoids affected the parasitism to some extent and the interference fitted Hassell-Varley model, which could be well simulated as a = 0.071 9 P –0.252 6.

关 键 词：寄生蜂 瓜实蝇 功能反应 寄生力 

分 类 号：S433[农业科学—农业昆虫与害虫防治]