[Predation of Axinoscymnus cardilobus to Bemisia tabaci].
The laboratory study on the predation of Axinoscymnus cardilobus to Bemisia tabaci showed that the functional response of A. cardilobus to B. tabaci was of Holling' s type II. With the increasing age of B. tabaci, the searching rate of A. cardilobus adult decreased, and its handling time became longer. The searching rate of A. cardilobus larva was increased with its age, and the handling time became shorter. The mutual interference in individual predator could be described by Hassell and Varley equation, and the relationship between predation ratio (E) and natural enemies density (P) was E =0. 5205P(-0 6631.) The predation efficiency (E) of predator varied with environmental temperature, and the effects of the temperature on search rate (a) and handling time ( T ) could be described by a = -0. 0002T(3)+ 0. 0166T(2) - 0. 3492T + 3. 2329 and Th = 4 x 10 (-7) T-( 3) x 10(-5) T(2) + 0.0006T 0.0009, respectively.
Huang
Zhen
Z
Engineering Research Center of Biological Control of Education Ministry, South China Agricultural University, Guangzhou 510642, China hzscau@tom.com
Ren
Shunxiang
S
Yao
Songlin
S
D000818:Animals; D001517:Coleoptera / Q000502:physiology*; D005247:Feeding Behavior / Q000502:physiology*; D006430:Hemiptera / Q000502:physiology*; D010572:Pest Control, Biological; D010944:Plants / Q000469:parasitology; D011235:Predatory Behavior / Q000502:physiology*