Relationship Between Temperature and Development of Lariophagus distinguendus (Hymenoptera: Pteromalidae), an Ectoparasitoid of Sitophilus oryzae (Coleoptera: Curculionidae)

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Development of Lariophagus distinguendus (Forster) parasitizing fourth instars of Sitophilus O1'yzae(L.) was studied in relation to temperature. As the temperature increased from 20" to 32"(;, total developmental period of the female and male parasitoids decreased from 31.0 ± 1.02 to 14.2 ± 0.7 d and from 28.0 ± 1.0 to 13.8 ± 0.8 d, respectively. The developmental period at 34"(; was similar to that at 32"C. Complete development at 18"Cwas significantly inhibited. Males developed faster than females. The relationship was described fairly well by a combination model; lower and upper thresholds for complete development of female and male were estimated to be 15.1° and 37.2"C, and 15.2° and 38.7"C, respectively.

Document Type: Research Article

Publication date: June 1, 1991

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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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