Acta Entomologica Sinica (2012) 55, 1230-1238

Wan-Dong Yin, Wen-Tao Yan, Gui-Sheng Qiu, Huai-Jiang Zhang, Chun-Sen Ma (2012)
Age-stage two-sex life tables of the experimental population of Panonychus ulmi (Acari: Tetranychidae) on apples Malus sieversii subsp. kirghisorum and M. domestica Golden Delicious
Acta Entomologica Sinica 55 (10), 1230-1238
Abstract: In order to understand the influence of Malus sieversii subsp. kirghisorum and M. domestica Golden Delicious on the development and reproduction of the European red mite Peanonychus ulmi (Kocha), age-stage two-sex life tables of the experimental population of P. ulmi on the two varieties under the conditions of 23 ± 1°C 75% ± 5% relative humidity and a photoperiod of 16L:8D in the laboratory were constructed. The results showed that there were significant differences in female adult longevity, oviposition period and fecundity between P. ulmi mites reared on M. sieversii subsp. kirghisorum and on M. domestica Golden Delicious (P<O.05). However, no significant difference was found in total developmental duration, total pre-oviposition period and survival rate of immatures between P. ulmi mites on M. sieversii subsp. kirghisorum and on M. domestica Golden Delicious. The total developmental duration of P. ulmi on M. sieversii subsp. kirghisorum and M. domestica Golden Delicious were 12.60 d and 12.54 d for females and 11.40 d and 11.67 d for males respectively. The longevity of female P. ulmi mites reared on M. domestica Golden Delicious (13.46 d) was longer than those on M. sieversii subsp. kirghisorum (10.88 d). The oviposition periods of P. ulmi on M. domestica Golden Delicious and M. sieversiisubsp. kirghisorum were 10.55 d and 8.3 d respectively. The number of eggs laid per female was significantly higher on M. domestica Golden Delicious (34.12 eggs/female) than on M. sieversii subsp. kirghisorum (22.48 eggs/female)(P<0.05). The intrinsic rate of increase (r) the net reproductive rate (Ro) the mean generation time (T) and the finite rate of increase (λ) of P. ulmi mites reared on M. sieversii subsp. kirghisorum were 0.1354, 11.96, 18.33 and 1.1450 respectively while those reared on M. domestica Golden Delicious were O.1489, 17.39, 19.18 and 1.1606 respectively. The results of population dynamic parameters suggest that the population growth of P. ulmi mites reared on M. domestica Golden Delicious is quicker than those reared on M. sieversii subsp. kirghisorum. The results may contribute to further understanding of the population dynamics of P. ulmi occurring on M. sieversii and M. domestica and provide a theoretical basis to breed mite-resistant apple varieties and to promote comprehensive management for P. ulmi.
(The abstract has been supplied by the author or ISPI and is excluded from the Creative Commons licence.)
(original language: Chinese)
Database assignments for author(s): Chun-Sen Ma

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Panonychus ulmi	Apple (Malus)	China (NE)