Age-stage two-sex life tables of Panonychus ulmi (Acari: Tetranychidae), on different apple varieties.
To understand the influence of different apple varieties on the development and reproduction of the European red mite, Panonychus ulmi (Koch) (Acari: Tetranychidae), age-stage two-sex life tables of P. ulmi on 'Fuji,' 'Starkrimson Delicious,' 'Golden Delicious,' and 'Granny Smith' varieties were constructed under laboratory conditions at 23 +/- 1 degrees C, 75 +/- 5% relative humidity, and a photoperiod of 16:8 (L:D) h. Results showed that total development time of immature females was shorter on Fuji than on the other varieties, and this was because of its shorter egg duration. Immature survival of P. ulmi was 74.51-78.00% among four apple varieties, and no significant differences were found. The total fecundity per female was significantly higher on Golden Delicious (34.12 eggs per female) than that on Fuji (27.15 eggs per female), Starkrimson Delicious (25.15 eggs per female), and Granny Smith (20.62 eggs per female). Based on the intrinsic rate of population increase, Fuji and Golden Delicious were more suitable than Starkrimson Delicious and Granny Smith.
Research Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng, Liaoning 125100, China.
Wan-Dong
WD
Yin
Gui-Sheng
GS
Qiu
Wen-Tao
WT
Yan
Li-Na
LN
Sun
Huai-Jiang
HJ
Zhang
Chun-Sen
CS
Ma
Uzokwe Pauline
UP
Adaobi
D000375:Aging; D000818:Animals; D002681:China; D005260:Female; D020387:Food Chain; D007300:Insect Control; D015993:Life Tables; D008297:Male; D027845:Malus / Q000235:genetics / Q000254:growth & development*; D040102:Tetranychidae / Q000254:growth & development / Q000502:physiology*