张同强 1,2, 程云霞 2, 张 蕾 2, 罗礼智 2, 张宝琴 1*, 江幸福 2*.用年龄-阶段两性种群生命表研究不同寄主上草地螟种群动态的差异[J].植物保护,2020,46(1):101-107. |
用年龄-阶段两性种群生命表研究不同寄主上草地螟种群动态的差异 |
Population dynamics of Loxostege sticticalis (Lepidoptera: Crambidae) on different host plants by using age stage two sex life table |
投稿时间:2019-01-08 修订日期:2019-03-13 |
DOI:DOI:10.16688/j.zwbh.2019013 |
中文关键词: 草地螟 种群 年龄-阶段两性生命表 寄主植物 |
英文关键词:Loxostege sticticalis population age stage two sex life table host plant |
基金项目:公益性行业(农业)科研专项(201403031);国家现代农业产业技术体系建设专项(CARS-22);国家自然科学基金(31672019,31871951);国家重点研发计划(2017YFD0201701,2017YFD0201802) |
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中文摘要: |
在温度(22±1)℃、相对湿度70%±5%和光周期L∥D=16 h∥8 h条件下通过年龄-阶段两性生命表探讨了寄主植物对草地螟 Loxostege sticticalis 种群动态的影响。结果表明,藜饲养的草地螟卵期和幼虫期最短,与大豆、向日葵和小麦处理组相比差异显著,雌雄蛹重显著高于小麦组,雌雄蛾寿命也显著长于向日葵及小麦组;表明藜是草地螟最适宜的寄主植物,其次为大豆、向日葵和小麦。以藜饲养的草地螟产卵前期较短,产卵历期较长,产卵量也显著高于向日葵及小麦组;与藜饲养相比,大豆饲养的草地螟产卵前期较长,但产卵历期和产卵量与藜组相比均无显著差异;以年龄-阶段两性种群生命表计算藜饲养的草地螟种群的幼虫存活率达90%,显著高于其他组;净增殖率、内禀增长率及周限增长率分别为84.01、0.111和1.117,显著高于其他组,平均世代周期为55.44 d,显著短于其他组;根据种群生命表参数预测90 d内种群动态结果表明藜最有利于草地螟种群的增长。 |
英文摘要: |
The population dynamics of Loxostege sticticalis Linnaeus on different host plants was studied by using age stage two sex life table at constant temperature of (22±1)℃, humidity of 70%±5% and photoperiod of L∥D=16 h∥8 h. The results showed that the developmental durations of egg and larva of L. sticticalis fed on pigweed were shorter than those of L. sticticalis fed on soybean, sunflower and wheat, respectively. The male and female pupa weights of L. sticticalis fed on pigweed were significantly heavier than those of L. sticticalis on wheat, and the longevity of male and female L. sticticalis was longer than that of those on sunflower and wheat, indicating that the pigweed is the best host plant for L. sticticalis, followed by soybean, sunflower and wheat. L. sticticalis fed on pigweed had a shorter pre oviposition duration, a longer period of oviposition, and laid more eggs than that fed on sunflower and wheat. The pre oviposition period of females fed on pigweed was significantly longer than that of females fed on soybean, but there was no significant difference in oviposition period and fecundity. The larval survival rate calculated by using age stage sex life table was 90% for the group fed on pigweed, which was significantly higher than other groups. The net reproductive rate, intrinsic rate of increase and finite rate of increase for the population fed on pigweed was 84.01, 0.111 and 1.117, respectively, which was significantly higher than those of the other groups. The mean generation time of the group fed on pigweed was 55.44 d, which was significantly shorter than that of L. sticticalis fed on other hosts. Based on the life table parameters, the population dynamics within 90 days was predicted, suggesting that the pigweed was the most beneficial host plant for L. sticticalis population growth. |
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