单寄生
dān jì shēnɡ
- haploparasitism;monoparasitism
单寄生-
种植密度和生育期不仅影响了单种寄生蜂的寄生率，而且也影响了螟卵寄生蜂种类的多少。
At the higher planting density and later in the season parasitism declined along with number of species per egg mass .
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单殖吸虫对寄生部位的选择性与种群数量有关，时间生态位的分离，正是种间竞争的结果。
The selectivity of parasitic sites is in relation to the population size , while the seperation of the ecological niche may be resulted from the interspecific competition .