Laboratory Life Table Studies of the Blackfaced Leafhopper (Homoptera: Cicadellidae) on Johnsongrass and Corn
作者:
John D. Sedlacek,
Kenneth V. Yeargan,
Paul H. Freytag,
期刊:
Environmental Entomology
(OUP Available online 1986)
卷期:
Volume 15,
issue 6
页码: 1119-1123
ISSN:0046-225X
年代: 1986
DOI:10.1093/ee/15.6.1119
出版商: Oxford University Press
关键词: Graminella nigrifrons;life tables;Johnsongrass;corn;host plants
数据来源: OUP
摘要:
Laboratory life tables were constructed forGraminella nigrifrons(Forbes) using Johnsongrass and corn as hosts. Daily mortality and fecundity schedules were established to estimate net reproductive rate and instantaneous rate of population increase on each host. Nymphal mortality on Johnsongrass was greatest in the fifth instar. In general, nymphal mortality was higher on corn and was greatest in the second, third, and fourth instars. Net reproductive rate and instantaneous rate of population increase were higher on Johnsongrass than on corn. This was attributed to higher probabilities of survival to the midpoint of any stage or age interval and higher numbers of female eggs per female per week on Johnsongrass. Mean generation time was essentially the same for each host.
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