斜紋夜蛾（Spodoptera litura（F.））的生命表

Life Table of the Tobacco Cutworm (Spodoptera litura (F.))

歐陽盛芝(Sheng-Chih Ou-Yang)

《中華昆蟲》 14卷2期 (1994/06) Pp. iv+183-205

https://doi.org/10.6660/TESFE.1994015

摘要

以生命表分析人工飼料飼育之斜紋夜蛾(Spodoptera litura (F.))的生活史資料，在25℃下，經二次重複試驗結果，以修正之傳統生命表分析得知其族群介量，內在增殖率(r)分別為0.2001及0.2140，平均世代時間(T)為36.18及34.86天，淨增殖率(R_0)為1,394及1,737，終極增殖率(λ)為1.2215及1.2386。以兩性生命表分析時的族群介量，內在增殖率(r)為0.1869及0.1864，平均世代時間(T)為37.36及37.12天，淨增殖率(R_0)為1,078及1,011，終極增殖率(λ)為1.2055及1.2049。此外，並計算穩定年齡分布，期望壽命與繁殖值，及模擬族群生長。分析結果顯示，兩性生命表能考慮齡期的分化與個體間發育速率之變異性，更能考慮雌、雄兩性，也能夠證實繁殖率與淨增殖率之間的關係。

關鍵字

斜紋夜蛾 ； 生命表 ； 族群介量

並列摘要

The life history data of the tobacco cutworm (Spodoptera litura (F.)) reared with an artificial diet were analyzed using the two-sex and traditional life tables. At 25℃ condition, two sets of tests were done. The results of population parameter of tobacco cutworm calculated using traditional life table analysis were obtained. The intrinsic rate of increase (r) of the tobacco cutworm were 0.2001 and 02140. The mean generation time (T) were 36.18 days and 34.86 days. The net reproduction rate (R_0) were 1394 and 1737. The finite rate of increase (λ) were 1.2215 and 1.2386. When the population parameter of tobacco cutworm was analyzed with the two-sew life table, the intrinsic rate of increase (r) were 0.1869 and 0.1864. The mean generation time (T) were 37.36 days and 37.12 days. The net reproduction rate (R_0) were 1078 and 1011. The finite rate of increase (λ) were 1.2055 and 1.2049. The stable age-stage distribution, expectation of life and reproductive value were also calculated. The population growth of the tobacco cutworm based on traditional and two-sex life tables were simulated. Two-sex life table could consider division of stage, variability of development rate, and difference of sex of insects. The relationship between fecundity and net reproductive rate that analyzed according to the two-sex life table could be proved.

並列關鍵字

Tobacco cutworm ； life table ； population parameter