Within- Tree Distribution and a Fixed-Precision-Level Sampling Plan for the Orange striped Oakworm (Lepidoptera: Satumiidae)

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Abstract:

Within-tree distribution and dispersion of orange striped oakworm, Anisota Senatoria( J. E. Smith), was studied, and a sampling plan was developed. Significantly more A. senatoria eggs and early instars (first-second) were found in the low stratum of the canopy (1.7-3.6 m above ground) compared with middle (3.7-5.5 m) and high strata (5.6-7.6 m). Significantly more third instars were found in low and middle strata compared with the high stratum. Distribution of late instars (fourth-fifth) was not significantly different among strata. Dispersion indices demonstrated that Taylor's power law provided a better fit to A. senatoria count data compared with Iwao's patchiness regression. Taylor's power law indicated that aggregation decreased from early to late instars. A fixed-precision-level sampling plan was developed that determined the minimum number of samples within a tree necessary to estimate the number of eggs and early ins tars present in the low stratum.

Document Type: Research Article

Publication date: April 1, 1994

More about this publication?
  • 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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