摘要
在室内１５℃、２０℃、２５℃、３０℃、３２．５℃下测定了菜蛾绒茧蜂寄生数量随寄主密度的变化情况．结果表明，在１５～３２．５℃范围内的各个温度下的功能反应均能用Ｈｏｌｉｎｇ圆盘方程很好地拟合，但各温度间功能反应的参数存在着显著差异．２５℃、３０℃、３２．５℃下的瞬时攻击率比１５℃、２０℃下显著要高，而处理时间则随温度升高而缩短．各温度下在供寄主的５ｈ内，均有部分雌蜂不产卵寄生小菜蛾幼虫．
The functional response of Cotesia plutellae to the increase of larval density of
diamondback moth( Plutella xylostella ) was examined at indoor temperatures 15℃,20℃,25
℃,30℃ and 32.5℃. The results showed that the functional response could be described very
well by Holling's disc equation at all test temperatures, but the parameters of the functional
response differed significantly. The rates of successful attack at 25℃, 30℃ and 32.5℃ were
significantly higher than those at 15℃ and 20℃, and the handling time decreased with
increase temperature. After exposed to various densities of DBM 3rd instar larvae for 5 hrs,
some females failed to produce eggs to parasitize any larva. The percentage of females which
have parasitized at least one DBM larva increased with the increases of both temperature and
host density.
出处
《应用生态学报》
CAS
CSCD
1999年第3期332-334,共3页
Chinese Journal of Applied Ecology
基金
国家"九五"科技攻关项目
澳大利亚国际农业研究中心资助的中澳合作项目
关键词
菜蛾绒茧蜂
小菜蛾
功能反应
温度效应
Cotesia plutellae, Plutella xylostella , Functional response,
Temperature effect.
