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1 July 1996 Laboratory life history studies of the predaceous mite Typhlodromus athiasae (Acari: Phytoseiidae)
H. Reuveny, E. Palevsky, U. Gerson
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Abstract

The biology of Typhlodromus athiasae Porath & Swirski (Acari: Phytoseiidae) was studied in the laboratory. When mites were fed on pollen of Carpobrotus edulis highest fecundity (1.5 eggs/day for 20 days) was obtained at 25°C, 70% RH and a photoperiod of L:D 16:8; lower or higher temperatures and humidities resulted in lower fecundity. Feeding on a spider mite, Tetranychus urticae Koch, resulted in a similar number of progeny, but apple pollen engendered less progeny. Fewer eggs were produced at L:D 10:14 than at L:D 16:8. Individual males fertilized an average of six virgin females. Presence of males with females throughout the 20 days of oviposition did not induce higher fecundity than a one-day male-female co-occurrence. The sex ratio was M:F 1:2.6. Virgin females which mated late in their lives (at 30, 60, 90 and 120 days post-emergence) produced progressively fewer eggs, and for a shorter period, than early-mated females. At 25°C some females lived for 3–4 months after oviposition, but no such prolonged survival occurred at 21°C or 29°C. Larval mites molted without feeding. These findings are discussed in relation to theories about the evolution of phytoseiid life histories.

H. Reuveny, E. Palevsky, and U. Gerson "Laboratory life history studies of the predaceous mite Typhlodromus athiasae (Acari: Phytoseiidae)," Systematic and Applied Acarology 1(1), 45-53, (1 July 1996). https://doi.org/10.11158/saa.1.1.9
Accepted: 15 June 1996; Published: 1 July 1996
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KEYWORDS
fecundity
life history
longevity
pollen
Typhlodromus athiasae
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