首页 | 本学科首页   官方微博 | 高级检索  
   检索      

幼虫密度对草地螟生长发育及繁殖的影响
引用本文:孔海龙,罗礼智,江幸福,张蕾,胡毅.幼虫密度对草地螟生长发育及繁殖的影响[J].昆虫学报,2011,54(12):1384-1390.
作者姓名:孔海龙  罗礼智  江幸福  张蕾  胡毅
作者单位:中国农业科学院植物保护研究所, 植物病虫害生物学国家重点实验室, 北京 100193
基金项目:国家自然科学基金项目(31071641); 公益性行业(农业)科研专项(201003079)
摘    要:为了明确幼虫密度对草地螟Loxostege sticticalis种群增长的影响,对室内条件下(温度22±1℃,RH 70%±5%,光周期16L:8D)不同幼虫密度1,10,20,30和40头/瓶(650 mL)]饲养的草地螟生长发育及繁殖进行了研究.结果表明:幼虫密度对草地螟幼虫体色、发育历期和存活率,以及蛹重和成...

关 键 词:草地螟  幼虫密度  生长  发育  繁殖  生命表  种群增长指数

Effects of larval density on growth,development and reproduction of the beet webworm,Loxostege sticticalis(Lepidoptera:Pyralidae)
KONG Hai-Long , LUO Li-Zhi , JIANG Xing-Fu , ZHANG Lei , HU Yi.Effects of larval density on growth,development and reproduction of the beet webworm,Loxostege sticticalis(Lepidoptera:Pyralidae)[J].Acta Entomologica Sinica,2011,54(12):1384-1390.
Authors:KONG Hai-Long  LUO Li-Zhi  JIANG Xing-Fu  ZHANG Lei  HU Yi
Institution: State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Abstract: To investigate the effects of larval density on the population growth of the beet webworm, Loxostege sticticalis, the larval duration and survival, pupal weight and adult fecundity were examined by rearing larvae at the densities of 1, 10, 20, 30 and 40 larvae/650 mL jar under laboratory conditions (22±1℃, RH 70%±5%, photoperiod 16L∶ 8D). The results showed that larval cuticular color, developmental duration and survival, pupal weight and adult fecundity of L. sticticalis were significantly affected by larval density. Larval cuticular melanization score became greater as the density increased, and the scores at the densities exceeding 10 larvae per jar were significantly higher than that at the density of one larva per jar (P<0.05). The developmental time of larva and pupa at the density of 20 larvae per jar was the shortest, while it was significantly prolonged as the larval density increased (P<0.05). The larval survival rate was the highest at the density of 10 larvae per jar, which was significantly higher than those at other densities (P<0.05). Pupal weight was the heaviest at the density of one larva per jar, and it was significantly reduced with the increase of larval density. The total fecundity per female and the proportion of mating individuals were the highest at the density of one larva and 20 larvae per jar, respectively, and they decreased as larval density increased. Adult oviposition duration was gradually shortened with the increase of larval density. The longevity of female and male was the longest at the density of 10 and 20 larvae per jar, respectively, while it was significantly shortened when larval density was too high. Life table analysis indicated that the population growth index was significantly affected by larval density, and it was the highest at the density of 10 larvae per jar, but lower at either higher or lower density. It is so concluded that larval density is one of the major factors influencing population growth in L. sticticalis.
Keywords:Loxostege sticticalis  larval density  growth  development  reproduction  life table  population growth index  
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《昆虫学报》浏览原始摘要信息
点击此处可从《昆虫学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号