Australian Journal of Entomology (2003) 42, 131-137

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Marilyn Y. Steiner, Stephen Goodwin, Tony M. Wellham, Idris M. Barchia and Lorraine J. Spohr (2003)
Biological studies of the Australian predatory mite Typhlodromalus lailae (Schicha) (Acari: Phytoseiidae)
Australian Journal of Entomology 42 (2), 131-137
Abstract: The biology of the Australian phytoseiid mite Typhlodromalus lailae is described from material collected in Western Australia and New South Wales in 1994. At 25°C, when fed on cumbungi (Typha sp.) pollen, the life cycle is completed in approximately 6 days, with an intrinsic rate of natural increase (rm), of 0.38. Female-male pairs produced a mean total of 44.6 eggs within 22 days of oviposition, with 39% of these females living in excess of 29 days. Females that were deprived of males after first mating stopped laying eggs after 4-9 days, but if another male was added they resumed egg laying and produced close to a full complement of eggs (mean 42 eggs). At 25°C, fecundity on a diet of cumbungi pollen or thrips larvae (first-instar Frankliniella schultzei Trybom) was high, averaging 3.71 and 3.33 eggs per day, respectively, over a 3-day period. The sex ratio was approximately 1.5 females to 1 male. Consumption rate of thrips was also high, with an average of approximately seven first-instar or two second-instar F. schultzei larvae eaten per day. The species was also observed to feed on broad mite, Polyphagotarsonemus latus (Banks), and tomato russet mite, Aculops lycopersici (Massee). No diapause was observed under conditions of 25°C 8 h light and 10°C 16 h dark. Eggs were sensitive to low humidity, with 50% failing to hatch below 71.1% relative humidity. This species is of interest as a candidate biological control agent for thrips, broad mite and tomato russet mite in protected crops.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Marilyn Y. Steiner

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Aculops lycopersici
Frankliniella schultzei
Polyphagotarsonemus latus
Typhlodromalus ailae (predator) Aculops lycopersici
Typhlodromalus ailae (predator) Frankliniella schultzei Australia (South+SE)
Typhlodromalus ailae (predator) Polyphagotarsonemus latus Australia (Western)