Systematic & Applied Acarology
ISSN 1362-1971
An international journal of the Systematic and Applied Acarology Society, published since 1996


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Systematic & Applied Acarology (2003) 8, 67-74

Studies on the life history of Amblyseius cucumeris (Acari: Phytoseiidae) feeding on Aponychus corpuzae (Acari: Tetranychidae)

YANXUAN ZHANG1, JIANZHEN LIN1, ZHI-QIANG ZHANG2, YUTAKA SAITO3 & JIE JI 1

1 Institute of Plant Protection, Fujian Academy of Aricultural Science, Fuzhou 350013, China

2 Landcare Research, Private Bag 92170, Auckland, New Zealand

3 Laboratory of Animal Ecology, Department of Ecology and Systematic, Graduate School of Agiculture, Hokkaido University, Japan

Abstract

This laboratory study examines the life history of Amblyseius cucumeris feeding on Aponychus corpuzae under four constant temperatures. The females of Amblyseius cucumeris required 20.00.5 days to complete its development from the egg to adult at 151C, but only 7.70.3 days at 301C. The developmental duration of each stage of A. cucumeris decreased with increasing temperature from 15C to 30C. The average oviposition period was 22.21.6 days, and the fecundity was 28.91.9 eggs. The female longevity (egg to death) was 40.60.7 days. Latoratory studies of predator : prey numerical responses revealed that at the ratios between 3 : 30 and 9 : 30, predators quickly brought A. corpuzae populations under control and the prey densities began to decrease from the 4th days after predator introduction. The present study shows that A. cucumeris can develop, survive and increase its population when feeding on A. corpuzae and has good potential as a biological control agent of A. corpuzae in moso bamboo forests in Fujian, China.

Key words: Amblyseius cucumeris (Oudemans), Aponychus corpuzae (Rimando), life history, biological control, predator-prey interaction


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