alexa Feeding, uptake, and utilization of carbohydrates by western subterranean termite (Isoptera: Rhinotermitidae).
Environmental Sciences

Environmental Sciences

Journal of Biodiversity, Bioprospecting and Development

Author(s): Saran RK, Rust MK

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Abstract Western subterranean termite, Reticulitermes hesperus (Banks), prefers various mono-, di-, and trisaccharides, total feeding being the greatest on paper disks treated with 5\% ribose followed by 3\% xylose, 2\% maltose, 2\% fructose, 2\% arabinose, and 2\% ribose. In multiple choice tests, termites were not able to discriminate between 2\% ribose, 2\% fructose, 2\% xylose, and 2\% maltose. Termites readily take up [14C] sucrose in feeding studies. Most of the sucrose is used as an energy source for respiration (89.2\%), a very small proportion remains within the termite (9.3\%), and an even smaller amount is excreted as solid waste (1.5\%). The amount of 14C label transferred to other colony members via trophallaxis, body contact, or grooming is small and directly dependent upon the time and numbers of donors and recipients. At day 15 postmixing, the percentage of transfer was highest, 14.4 and 15.1\% for both 1:1 and 2:1 donor to recipient mixing ratios, respectively. The mean amount of labeled 14C received by recipients increased from seven disintegrations per minute (dpm) on day 2 to 30 dpm on day 15 for 1:1. Overall mean radioactivity recovered from recipient termites when mixed with donor termites at 1:1 ratio (20 dpm) was significantly less than (28 dpm) when mixed with donor termites at 2:1 ratio. Sugars act as phagostimulants to the termites at concentrations much higher to those that termites naturally encounter in wood. Termites readily metabolize carbohydrates such as sucrose, and thus their use in bait matrices may increase consumption and retention at bait stations.
This article was published in J Econ Entomol and referenced in Journal of Biodiversity, Bioprospecting and Development

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