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机构地区:[1]福建农林大学应用生态研究所,福建福州350002
出 处:《福建农林大学学报(自然科学版)》2008年第1期27-32,共6页Journal of Fujian Agriculture and Forestry University:Natural Science Edition
基 金:福建省自然科学基金(B0020002;B0110019);国家自然科学基金(30070503);福建省科技厅(2002N007;2003N019)资助项目
摘 要:通过在29℃恒温条件下的饲养观察,组建了黄曲条跳甲年龄特征生命表和繁殖特征生命表,并计算出反映种群增长动态的几个重要参数.结果表明:黄曲条跳甲世代总存活率为0.58,种群趋势指数为88.01,净繁殖率为87.8879,世代平均历期为43.9 d,内禀增长能力为0.1020,瞬时出生率和死亡率分别为0.2720、0.1700,周限增长率为1.1074,双倍时间为6.8d;在稳定年龄组配中,未成熟期(卵、幼虫、蛹)年龄组占88.94%,成虫期年龄组占11.06%.By studying experimental population of striped flea beetle, Phyllotreta striolata (Fabricius), the age specific life table and fecundity specific life table were constructed. The population parameters such as survival rate of generation (0.58), trend index of population (1 = 88.01 ) , net reproductive rate (R0 = 87.8879) , mean generation time (T = 43.9) , innate capacity for increase ( rm = 0.1020) , instantaneous rates of birth and death ( b = 0.2720 ; d = 0.1700) , finite rate of increase ( A = 1.1074) and doubling time ( DT = 6.8 ) were obtained. Stable age composition was as follows : the age period of immature population accounted for 88.94%, the age period of adult population accounted for 11.60%.
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