Sampling Methods forProdiplosis longifila(Diptera: Cecidomyiidae) in Limes
作者:
J. E. Pena,
R. Duncan,
期刊:
Environmental Entomology
(OUP Available online 1992)
卷期:
Volume 21,
issue 5
页码: 996-1001
ISSN:0046-225X
年代: 1992
DOI:10.1093/ee/21.5.996
出版商: Oxford University Press
关键词: Prodiplosis longifila;egg dispersion;larval dispersion
数据来源: OUP
摘要:
Dispersion patterns of eggs, larvae, and adults ofProdiplosis longifilaGagné were determined for lime orchards in Dade County, Florida, during 1987 and 1989. Dispersion indices generated by Taylor's power law and Iwao's patchiness regression were compared. Taylor's power law provided a better description of variance-mean relationships for eggs, larvae, and adults than did Iwao's patchiness regression. All insect stages exhibited aggregated patterns of spatial distribution (b>1.4). Sample size requirements for fixed levels of precision were determined for eggs and larvae using estimated variance–mean relationships obtained from Taylor's power law regressions. Color sticky traps placed on the tree canopy provided a more efficient method of samplingP. longifilapopulations than ground emergence traps and collection of larval samples.
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