| 尚素琴, 刘平, 张新虎*.不同温度下巴氏新小绥螨对西花蓟马初孵若虫的捕食功能[J].植物保护,2016,42(3):141-144. |
| 不同温度下巴氏新小绥螨对西花蓟马初孵若虫的捕食功能 |
| Predatory functional response of Neoseiulus barkeri on newly hatched nymphs of Frankliniella occidentalis |
| 投稿时间：2015-03-12 修订日期：2015-07-07 |
| DOI： |
| 中文关键词: 巴氏新小绥螨 西花蓟马 捕食功能 干扰作用 |
| 英文关键词:Neoseiulus barkeri Frankliniella occidentalis predatory functional response interference |
| 基金项目:公益性行业(农业)科研专项(200903032)；甘肃省农牧厅生物技术专项(201103020) |
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| 中文摘要: |
| 为明确巴氏新小绥螨［Neoseiulus barkeri (Hughes)］对西花蓟马［Frankliniella occidentalis (Pergande)］初孵若虫的捕食效应, 在相对湿度RH 85%±5%, 5个温度梯度16、20、24、28、32℃, 光照L∥D=16 h∥8 h条件下选取西花蓟马的初孵若虫进行捕食功能反应。结果表明: 巴氏新小绥螨对西花蓟马初孵若虫的捕食功能反应属于HollingⅡ型方程。在16~28℃温度范围内, 巴氏新小绥螨对西花蓟马初孵若虫的攻击系数、捕食能力、最大日捕食量均随温度升高而增加, 处理时间则缩短, 28℃时日捕食量最高达14.471 8头, 处理时间最短为0.069 1 d。温度达到32℃时, 捕食量下降。当西花蓟马初孵若虫的种群密度一定时, 巴氏新小绥螨的平均捕食量随其自身密度的增加而降低。说明猎物密度固定时巴氏新小绥螨存在明显的相互干扰作用。 |
| 英文摘要: |
| In order to determine the functional response of Neoseiulus barkeri (Hughes) on the 1st instar nymphs of Frankliniella occidentalis Pergande, the predation was examined at five constant temperatures (16, 20, 24, 28 and 32℃) under the laboratory conditions (RH 85%±5% and photoperiod L∥D=16 h∥8 h). The results showed that the predatory functional response fitted Holling type Ⅱ model. At the range of 16-28℃, the attack index (a), the a / Th value and the maximum predatory capacity (1/ Th) of N. barkeri increased with the temperature, and the average treatment time decreased. The maximum predatory capacity was 14.471 8 individuals per day, while the minimum handling time was 0.069 1 day at 28℃. The maximum daily predatory capacity reduced when the temperature was above 32℃. The average daily predatory capacity decreased with the increase of predator density when prey density was fixed, which indicated that predator competition and interference were obvious as prey density was fixed. |
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