Environmental Entomology (1985) 14, 864-867

M.A. Quinn and A.A. Hower (1985)
Changes in the spatial distribution of the clover root curculio (Coleoptera: Curculionidae) in alfalfa field soil
Environmental Entomology 14 (6), 864-867
Abstract: Changes in spatial patterns between life stages of the clover root curculio, Sitona hispidulus (F.), in alfalfa field soil were assessed by comparing the constant b from Taylor's power law. The egg population was significantly more aggregated than that of first instars, which may indicate spatially density-dependent mortality of first instars during their period of establishment. No changes in aggregation were detected among the instars and between the larval and pupal stages. A sampling plan is presented for estimating larval densities in cores of alfalfa field soil.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Sitona hispidulus	Alfalfa/lucerne (Medicago sativa)	U.S.A. (NE)