Development and oviposition models, life table, and functional response of Amblyseius eharai (Amitai et Swirski) (Acari: Phytoseiidae)

Amblyseius eharai;development model;oviposition model;life table;functional response;Phytoseiidae;biological control;Tetranychus urticae;630

농업생명과학대학 농생명공학부 ;

University:서울대학교 대학원

关键词: Amblyseius eharai;    development model;    oviposition model;    life table;    functional response;    Phytoseiidae;    biological control;    Tetranychus urticae;    630;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/125991/1/000000141197.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

Many species of Phytoseiidae have been used to control the pest such as mites, thrips and white flies in agricultural crop systems. Amblyseius eharai is a native Phytoseiidae in Korea and known for a biological control agent of spider mites in the early season in apple orchards. To evaluate the potential of A. eharai as a biological control agent, ecological characteristics of A. eharai were studied by using Tetranychus urticae (Koch) (Acari: Tetranychidae) as prey. First, development and fecundity of A. eharai were studied at different temperatures and its temperature-dependent development and oviposition models were developed. Second, life table of A. eharai was constructed at various temperatures to analyze its population growth characteristics. Third, functional response of A. eharai was studied against larvae of T. urticae.Development of A. eharai was examined at 11 constant temperatures (18.0, 20.1, 21.6, 24.0, 24.1, 27.4, 28.6, 30.2, 32.0, 33.2 and 35.9 °C) and oviposition of A. eharai was examined at six constant temperatures (18.0, 21.6, 24.1, 27.4, 30.2 and 33.2 °C). Development of A. eharai was well described by the Briere 1 function. Lower threshold, optimal, and upper threshold temperatures of development of total immature stage were 13.2, 30.6, and 35.9 °C, respectively. Developmental variation of immature stages was well described by the two-parameter Weibull function. Fecundity was well described by the Extreme Value function. Optimal and B80 temperatures of fecundity were 24.3 and 20.5 ~ 27.4 °C, respectively. Adult developmental rate model, cumulative oviposition model and age-specific survival rate model were well described by the equation from the TableCurve 2D library, Weibull function and reverse sigmoid function, respectively. Life table analysis of A. eharai was conducted at six constant temperatures (18.0, 21.6, 24.1, 27.4, 30.2 and 33.2 °C) according to the age-stage, two-sex life table theory. Age-stage specific survival rate, age-stage specific fecundity, age-stage specific reproductive value, age-specific survival rate, age-specific fecundity and population projection were estimated. The intrinsic rate of increase was the highest at 27.4 °C as 0.2619. Mean generation time was longest at 18.0 °C as 26.9 days, and shortest at 30.2 °C as 10.5 days. Functional response of A. eharai was conducted at 10, 30, 50, 70 and 130 larvae of T. urticae. Functional response of A. eharai was the Type 2. The attack rate of female and male A. eharai was 0.109 and 0.019, respectively. The handling time of female and male was 0.164 h and 0.234 h, respectively. The attack rate was significantly different between males and females at 95% confidence interval. However, handling time was not statistically different.