Foraging Preference of Red Imported Fire Ants (Hymenoptera: Formicidae) Among Three Species of Summer Cover Crops and Their Extracts
Authors: KAAKEH, WALID; DUTCHER, JAMES D.
Source: Journal of Economic Entomology, Volume 85, Number 2, April 1992 , pp. 389-394(6)
Publisher: Entomological Society of America
Abstract:Foraging preference of red imported fire ant, Solenopsis invicta Buren, among three species of summer cover crops, sesbania, Sesbania exaltata (Rafinesque-Schmaltz) Cory; hairy indigo, Indigofera hirsuta L.; and cowpea, Vigna unguiculata (L.) Walpers, was evaluated in the greenhouse using choice and no-choice tests. Ants derived a large part of their nutrients from aphid honeydew, and ant workers differed in their response to plant species in the presence or absence of cowpea aphid. Ants preferred cowpea > indigo > sesbania when these plants were infested with cowpea aphids, whereas ants showed no preference between cowpea and indigo when plants were kept free of cowpea aphids. Sesbania showed almost 100% repellency to ants for 8 d, whether these plants were infested or kept free of aphids. In a pickup bioassay for detecting any discrimination among plants by ants, leaf disks from noninfested leaves of cowpea and hairy indigo were picked up more readily than those from sesbania. Response of ants to extracts differed significantly among plants. Sesbania extract repelled and caused mortality in the red imported fire ant. Ethanol extract of sesbania caused higher ant mortality than the water extract.
Document Type: Research Article
Publication date: April 1, 1992
- 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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