Abstract

I investigated the relationship between olfactory response, patch-leaving tendency, predation rate, fecundity, and developmental time of 11 geographical populations and 13 isofemale strains of the predatory mite Neoseiulus womersleyi. Significant differences were found in all these traits and behaviors among the geographical populations and among the isofemale strains. A significant positive correlation was found only between the olfactory response and the patch-leaving tendency of geographical populations. There was no such relationship among the isofemale strains. These results suggest that the positive correlation between the behavioral traits among geographical populations was not caused by genetic factors. The difference in the behavioral traits and the correlation among geographical populations is discussed from an ecological point of view where foraging strategy is determined by both the olfactory response and the patch-leaving tendency

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