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1 April 2008 Effect of Seven Different Pollens on Bio-Ecological Parameters of the Predatory Mite Typhlodromus foenilis (Acari: Phytoseiidae)
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Abstract

Development, immature survival, reproduction, and life table parameters of the predatory mite Typhlodromus foenilis Oudemans were evaluated on seven different plant pollens (almond, apple, pear, cherry, apricot, plum, and walnut). Experiments were conducted in environmental chambers at 20 ± 1°C with 65 ± 5% RH and a photoperiod of 16:8 (L:D). T. foenilis successfully completed its development on all pollen diets. Female mean developmental time from egg to adult emergence ranged from 11.3 ± 0.12 to 14.28 ± 0.23 d, whereas that of males was from 10.81 ± 0.17 to 14.17 ± 0.17 d. The average life span of adult females varied from 41.0 ± 1.46 to 65.45 ± 3.89 d, and total fecundity ranged from 11.78 ± 0.65 to 39.09 ± 2.38 eggs/female. The intrinsic rate of increase of T. foenilis was highest on almond pollen (rm = 0.104/d) and was the shortest on walnut pollen (rm = 0.055/d). The results show that this predatory mite develops well on all pollens, with almond and apricot pollens being of high nutritional value. This study provides further information for mass rearing of T. foenilis, and these findings are discussed in relevance with the establishment of this species in the field.

G. D. Papadopoulos and G. Th Papadoulis "Effect of Seven Different Pollens on Bio-Ecological Parameters of the Predatory Mite Typhlodromus foenilis (Acari: Phytoseiidae)," Environmental Entomology 37(2), 340-347, (1 April 2008). https://doi.org/10.1603/0046-225X(2008)37[340:EOSDPO]2.0.CO;2
Received: 5 September 2007; Accepted: 26 December 2007; Published: 1 April 2008
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