Sampling Distributions and Sequential Sampling Plans for Perkinsiella saccharicida Kirkaldy (Hemiptera: Delphacidae) and Tytthus spp. (Hemiptera: Miridae) on Sugarcane
Authors: ALLSOPP, P. G.; BULL, R. M.
Source: Journal of Economic Entomology, Volume 83, Number 6, December 1990 , pp. 2284-2289(6)
Publisher: Entomological Society of America
Abstract:Sampling statistics of eggs, nymphs, and adults of Perkinsiella saccharicida Kirkaldy and its predators, Tytthus spp., were determined on six varieties of sugarcane (Saccharum spp.) in southern Queensland, Australia. Iwao's patchiness regression and Taylor's power law were used to model the relationship between mean and variance of counts. Taylor's power law gave better fits to all data except for counts of eggs per egg mass. Sample sizes for fixed levels of precision and fixed-precision-level stop lines for sequential sampling were developed for all stages of P. saccharicida and nymphs and adults of Tytthus spp. The In(x + 1) transformation standardized the mean-variance relationship for P. saccharicida nymphs, adults, and eggs per egg mass and Tytthus spp. adults, but not for P. saccharlctda egg masses or Tytthus spp. nymphs. The Healy and Taylor transformation was not effective on P. saccharicida data but standardized Tytthus spp. nymph and adult counts.
Document Type: Research Article
Publication date: December 1990
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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