Abstract The life table parameters of Thrips palmi Karny were determined at four constant temperatures, 15, 21, 25, and 30˚C, on eggplant leaves for three generations. The results indicated that the age-specific fecundity (mx), the daily fecundity (fx5), and the age-specific maternity (lxmx) were highest at 25˚C. The intrinsic rate of increase (r) rose from 0.033 day-1 at 15˚C to between 0.046 and 0.157 day-1, then dropped to 0.118 day-1 at 21, 25˚and 30˚C, respectively. The net reproductive rate (R0) was highest at 25˚C at 18.6 eggs/individual. The mean generation time (T) shortened gradually from 15 to 30˚C, but was only one day shorter at 30˚C than at 25˚C. The standard error of r, , R0, and T were estimated by using the Jackknife method. Accordingly, the management strategy for T. palmi was suggested based on this study.
摘要 本研究以年齡齡期兩性生命表之理論分析南黃薊馬 (Thrips palmi Karny) 以茄葉飼養在15、21、25、30℃ 四種溫度下之生命表介量。結果顯示，齡別繁殖值 (mx)、每日繁殖值 (fx5) 及齡別繁殖淨值 (lxmx) 在25℃ 下為最高。15、21、25、30℃ 四種溫度的內在增殖率 (r) 分別為0.033、0.046、0.157及0.118 day -1；淨增殖率 (R0) 以25℃ 的18.6粒卵/雌成蟲為最高。平均世代時間 (T) 隨溫度的升高而遞減，然而30℃ 僅較25℃ 少1天。本文也以Jackknife方法估算內在增殖率、終極增殖率 (λ)、淨增殖率及平均世代時間的平均值及標準機差 (standard error)。本文也利用生命表介量提出南黃薊馬田間管理策略上的建議。
| Key words: Thrips palmi, temperature, life table parameters, eggplant | | 關鍵詞: 南黃薊馬、溫度、生命表介量、茄子。 |
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