BioControl (2004) 49, 645-654

Ismail Kasap and Erdal Sekeroglu (2004)
Life history of Euseius scutalis feeding on citrus red mite Panonychus citri at various temperatures
BioControl 49 (6), 645-654
Abstract: The aim of this study was to determine the biology and reproductive potential of Euseius scutalis (Athias-Henriot) (Acari: Phytoseiidae) at various temperatures. These data are of value in relation to mass rearing and the development of population dynamics models. The development time, survival and fecundity of E. scutalis were determined at 20, 25 and 30 ± 1 °C, 65 ± 10% RH and 16:8 photoperiod. Total development times of E. scutalis were 6.7, 4.9 and 4.2 days at 20, 25 and 30 ± 1 °C, respectively, using a diet of all life stages of the spider mite Panonychus citri (McGregor) (Acari: Tetranychidae). In general, preoviposition and postoviposition periods of E. scutalis were shortened as temperature increased, but the oviposition period was longer at 25 °C than at 20 and 30 °C. The shortest survival time of E. scutalis, at 30 °C, was 10.1 days, followed by 23.7 days and 28.6 days at 20 and 25 °C, respectively. Mated females laid on average 1.1, 1.4 and 1.7 eggs per female per day and 21.5, 39.7 and 17.1 eggs over their entire life time at 20, 25 and 30 °C, respectively. The sex ratios of E. scutalis were 2.11/1, 2.24/1 and 2.11/1 female/male at 20, 25 and 30 °C, respectively. The intrinsic rate of natural increase (r_m) increased with rising temperatures from 0.166 at 20 °C to 0.295 females/female/day at 30 °C. The net reproductive rate (R0) was highest at 25 °C (26.03 females/female) and lowest at 30 °C (12.95 females/female). Mean generation time (T0) was longest at 25 °C (17.50 days) and shortest (9.53 days) at 30 °C.
(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): Ismail Kasap

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Panonychus citri
Euseius scutalis (predator)	Panonychus citri