Aspects of the Spatial Distribution of Acanthomia tomentosicollis Stål (Heteroptera, Coreidae) in Cajanus cajan (Pigeon Pea)
Authors: Egwuatu, R. I.; Ajibola Taylor, T.
Source: Journal of Economic Entomology, Volume 69, Number 5, October 1976 , pp. 591-594(4)
Publisher: Entomological Society of America
Abstract:The spatial distribution of the Coreid bug, Acanthomia tomentosicollis Stål, was studied in 3 plots of pigeon pea (Cajanus cajan) over a period of 38–80 weeks. The species was found to be highly aggregated with indices of aggregation ranging from 1.61 for eggs to 2.30 for 2nd-instar nymphs. Indices of aggregation from the 2nd to the 5th nymphal instar decreased as the nymphs became more mature. An index of 1.61 calculated for eggs was not significantly different from that for females (1.66). An index of 1.84 was calculated for the species. It is suggested that an index of 2.00 for 1st instar nymphs which was lower than that of any other pre-imaginal instar, and which is not significantly different from the indices for the 4th and 5th instars might be due to differential predation or post-eclosion aggregation.
Document Type: Research Article
Publication date: October 1, 1976
- 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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