Dispersal Pattern of the Sorghum Midge (Diptera: Cecidomyiidae) in Sorghum Plots
作者:
M. Lampo,
V. Medialdea,
期刊:
Environmental Entomology
(OUP Available online 1994)
卷期:
Volume 23,
issue 3
页码: 551-555
ISSN:0046-225X
年代: 1994
DOI:10.1093/ee/23.3.551
出版商: Oxford University Press
关键词: sorghum midge;dispersal;diffusion models
数据来源: OUP
摘要:
The dispersion pattern ofContarinia sorghicolaCoquillet was explored by analyzing the distribution of captures along transects in grain sorghum plots. Adhesive traps at different distances from the edges of the plots were used to intercept dispersing midges. Mortality rates were determined experimentally. A passive diffusion model was fitted to the distribution of captures and the diffusion coefficient estimated. The passive diffusion model gave a good approximation to the spatial distribution of midges dispersing in sorghum plots. The estimated diffusion coefficient suggests that females disperses at a rate of 90 m2/h in sorghum plots. The model is used to predict the spatio-temporal distribution of midges dispersing inward from the edges of plots and identify areas susceptible to midge attack.
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