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S. SIMONI & M. CASTAGNOLI
1999, 2001). Concerning mortality, studies characterized more exactly the
dependence on prey density and the rate by which this changes. Through mortality,
species differently adapt to varying prey or food levels, in the different life style
types: the specialist species shows a tendence towards fast response to higher prey
densities than a generalist, whereas a generalist tends to persist for a longer time, at
limited or scarce prey density (Walzer & Schausberger, 2005; Simoni, Castagnoli, &
Liguori, 2005).
Table 2. Categorization of phytoseiids life style types by McMurtry and Croft (1997).
Type Strategy a Crop b
Type I spp.
Phytoseiulus persimilis 1, 2, 3 L, G
P. macropilis 2 L
P. longipes 2 L, G
Type II spp.
Galendromus annectes 1, 2 T
G. helveolus 1, 2 T
G. occidentalis 1, 2, 3 T, L, V
Typhlodromus (T.) rickeri
T
Neoseiulus bibens 1 L, Sh
N. californicus 1, 2 T, L, V
N. fallacis 1, 2, 3 T, Sh, L
N. idaeus 1, 3 Sh, L
N. longispinosus 1, 2 T, Sh, L
N. tiki 1 Sh, L
Type III spp.
Typhlodromus (T.) pyri 1, 2 T, V, Sh
T. (T.) exhilaratus 1 T
T. (Anthoseius) caudiglans 1 T
T. (A.) doreenae 1 V
Metaseiulus arboreus 1 T
M. citri 1 T
M. pomi 1 T
Paraseiulus soleiger 1 T