Life Tables and Intrinsic Rates of Increase of the Pecan Leaf Scorch Mite

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Life tables were constructed for the immature stages of the pecan leaf scorch mite (PLSM), Eotetranychus hicoriae (McGregor), at 21.1,26.7, and 32.2, and constant illumination (24:0 LD). Immature mortality varied from 81% at 32.2 to 96% at 21.1°C Life tables also were constructed for the PLSM at two photoperiodic regimes (10:14 and 14:10 LD) at 21.1°C. Immature mortality was 48 and 46% at 10:14 and 14:10 LD, respectively.

Intrinsic rates of increase (rm) varied from less than 0.001 at 21.1°C and constant illumination to 0.105 at 32°C and constant illumination. The rm values are ca. 50% of those reported for other tetranychids and result from a rearing technique which caused high immature mortality rates.

Document Type: Research Article

Publication date: October 1, 1981

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  • 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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