Acarologia (2005) 45, 13-22

K. Lebdi-Grissa, G. Van Impe and Ph. Lebrun (2005)
Paramètres biologiques et demographiques de Neoseiulus californicus (Acari : Phytoseiidae) a differentes temperatures
[Biological and demographic parameters of Neoseiulus californicus (Acari : Phytoseiidae) at different temperatures]
Acarologia 45 (1), 13-22
Abstract: The effect of temperature on development duration and on demographic parameters were tested on Tunisian population (Grombalia) of Neoseiulus californicus preying on Tetranychus urticae at 24, 30 and 35°C, under controlled conditions. The natural growth rate (r_m) ranged from 0.203 days^-1 at 24°C, to 0.326 days^-1 at 30°C and 0.268 days^-1 at 35°C. The net reproduction rate (R₀) has the highest value at 30°C with 23 females/female and was lower at 35°C than at 24°C (10 and 15 females/female in respect). The generation time (T) decreased with increasing temperature from 13.4 days at 24°C to 9.6 days at 30°C and 8.6 days at 35°C. The development time from egg to adult was two days shorter at 35°C (3.9 days) than at 24°C (5.9 days). It was 4.1 days at 30°C. The survival of immature, the fecundity and the adult female longevity were similar at 24 (84%, 30.7 eggs/female, 15.7 days) and 30°C (90%, 35.2 eggs/female, 14.8 days) but lowered at 35°C (in respect 72%, 21.9 eggs/ female and 10.7 days).
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: French)

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tetranychus urticae
Neoseiulus californicus (predator)	Tetranychus urticae