Effects of different banker plants on the development and reproduction of Tetranychus urticae and Stethorus punctillum
Author of the article:LIU Xiao-Hong1** NIE Hai-Jing2 XU Jia-Lian2 LIU Yu-Sheng1***
Author's Workplace:1. College of Plant Protection, Shandong Agricultural University, Tai’an 271018, China; 2. Insect Breeding Center of Linyi New Agricultural Biological Polytron Technologies Inc, Linyi 276600, China
Key Words:banker plant; Tetranychus urticae; Stethorus punctillum; developmental duration; fecundity
Abstract:[Objectives] To identify
the most suitable host plants for the development of Tetranychus urticae and Stethorus
punctillum. [Methods] The
developmental duration and fecundity of T.
urticae, and the developmental duration, fecundity, hatching rate, pupation
rate and eclosion rate of S. punctillum,
were measured at a temperature of (25±1)℃ and photoperiod of 14L︰10D, on different host plants. [Results] There were significant differences in the
developmental duration of both species on different plants. The shortest
developmental period of T. urticae was on peanut (9.82 d) and maximum
fecundity of this species was recorded on peanuts and cowpeas. The developmental period of S. punctillum was shortest on peanut and
cowpea (no significant difference), and highest on corn, peppers and eggplant.
Fecundity of S. punctillum on the
different banker plants was, peanut (112.60), cowpea (103.80), corn (85.20),
pepper (68.20) and eggplant (53.40) and its adult eclosion rate on different banker
plants was, peanut (80.11%), cowpea (70.26%), corn (66.66%), pepper (9.70%) and
eggplant (29.81%). [Conclusion] Of
the banker plants tested, peanut was the most suitable host for Tetranychus urticae and Stethorus punctillum.