摘要
在食物 (TN1)和环境条件 (2 6℃、RH为 85 % )均优越的条件下 ,比较了白背飞虱长翅和短翅两种翅型成虫在若虫历期、产卵前期、繁殖动态、寿命及种群增长参数等方面的差异。尽管两种翅型雌虫的总产卵量接近 (70 4粒 /雌 ) ,但短翅型雌虫的若虫历期和产卵前期均较短、产卵高峰到来时间较早、前期产卵量比例较高 ,因而内禀增长力较高。两种翅型雌虫的存活率在羽化后前 5 d内均接近 10 0 % ,之后长翅型较高。短翅型雌虫的寿命显著短于长翅型。两种翅型白背飞虱在寿命与产卵量间均存在极显著正相关线性关系 ,相同寿命的两种翅型个体 ,短翅型的产卵量较高。本实验表明 ,即使两翅型的总生殖力相同 ,短翅型仍具有优于长翅型的生活史优越性 ,换言之 ,长翅型成虫翅膀及其相关器官的构建是以其发育和生殖延迟为代价的。
Life history traits of winged (macropterous) and flightless (brachypterous) females of the rice white backed planthopper, Sogatella furcifera (Horvath) (Homoptera: Delphacidae) were compared under controlled favorite laboratory conditions (rice seedlings of susceptible variety TN1 as host plant, in a walk in incubator under 26℃,RH85%). Although the total fecundity of the two wing forms of adults were almost equal (704 eggs/female), the brachypters shortened their nymphal development duration and preoviposition period, reached their oviposition peak earlier, therefore increased their intrinsic rate of increase (r m). The survival rates of both wing forms were equally closed to 100% in the first 5 days after emergence, thereafter, macropters survived better than brachypters, so the longevity of macropters was longer than brachypters. The higher regression coefficient in the significant positive relationship between the fecundity and the total fecundity of brachypters than macropters indicated that brachypterous females with the same age as macropters females were proportionally more fecund. The experiments showed that brachypters of S. furcifera had significant life historical advantages compared to macropters, though their total fecundities were same.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2001年第3期229-232,共4页
Chinese Journal of Rice Science
基金
国家自然科学基金重点项目 (3 963 0 2 0 0 )
Interna-tional Foundation for Science(C/173 0 -2 )
关键词
白背飞虱
长翅型
短翅型
发育
繁殖力
存活率
生活史
Sogatella furcifera
macropter
brachypter
development
fecundity
survivorship
life history trait
