Greenhouse experiments were made in 1965 and 1966 at Baton Rouge, Louisiana, to determine whether transovarial acquisition of hoja blanca virus (HBV) by progeny of the rice delphcid, Sogala orizicola Muir, exists. Progeny of reciprocal crosses of HBV-transmitting (TT) males to nontransmitting (NT) females or NT males to TT females transmitted HBV to healthy rice seedlings having fed on a diseased plant. Transmission of HBV by progeny of nontransmitting females suggests that the expression 0f HBV disease symptoms on rice plants is not completely adequate as an indicator of HBV within a particular individual insect. Analysis of variance shows that a significant difference exists in adult longevity bee tween progeny of TT males crossed with NT females (21.3:±O.94days) and NT males crossed with TT females (18.1±O.88 days). HBV acquired transovarially may re duce the number of days the adult insect lives.
Document Type: Research Article
Publication date: June 1, 1967
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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.