ArticleActa tropica2016
Responses of Glossina pallidipes and Glossina morsitans morsitans tsetse flies to analogues of δ-octalactone and selected blends.
Article in Acta tropica, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 19 citations in OpenAlex.
- Field responses of Glossina pallidipes and Glossina fuscipes fuscipes tsetse flies to Novel Repellent Blend and Waterbuck Repellent Compounds in Kenya.PLoS neglected tropical diseases · 2025Article
- Controlling rate of release of tsetse fly repellent blend by encapsulating in β-cyclodextrin nanoparticles.Journal of nanotechnology · 2025Article
- An Overview of Tsetse Fly Repellents: Identification and Applications.Journal of chemical ecology · 2024Review
- Perspectives on Odor-Based Control of Tsetse Flies in Africa.Frontiers in physiology · 2022Review
- Annotations of novel antennae-expressed genes in male Glossina morsitans morsitans tsetse flies.PloS one · 2022Article
- Characterization of a composite with enhanced attraction to savannah tsetse flies from constituents or analogues of tsetse refractory waterbuck (Kobus defassa) body odor.PLoS neglected tropical diseases · 2021Article
- Blending studies with selected waterbuck odor constituents or analogues in the development of a potent repellent blend against savannah tsetse.Acta tropica · 2020Article
- Responses of Glossina fuscipes fuscipes to visually attractive stationary devices baited with 4-methylguaiacol and certain repellent compounds in waterbuck odour.PLoS neglected tropical diseases · 2019Article
- Characterisation of cattle anal odour constituents associated with the repellency of Rhipicephalus appendiculatus.Experimental & applied acarology · 2018Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
Previous studies have shown that δ-octalactone is an important component of the tsetse-refractory waterbuck (Kobus defassa) repellent odour blend. In the present study, structure-activity comparison was undertaken to determine the effects of the length of the side chain and ring size of the lactone on adult Glossina pallidipes and Glossina morsitans morsitans. The responses of the flies to each compound were studied in a two-choice wind tunnel. Increasing the chain length from C3 (δ-octalactone) to C4 (δ-nonalactone) enhanced repellency to both species (G. pallidipes from 60.0 to 72.0%, and G. m. morsitans from 61.3 to 72.6%), while increasing the ring size from six (δ-octalactone) to seven members (ε-nonalactone) changed the activity from repellency to attraction that was comparable to that of the phenolic blend associated with fermented cow urine (p>0.05). Blending δ-nonalactone with 4-methylguaiacol (known tsetse repellent) significantly (p<0.05) raised repellency to 86.7 and 91.7% against G. pallidipes and G. m. morsitans respectively. Follow-up Latin Square Designed field studies (Shimba hills in coastal areas in Kenya) with G. pallidipes populations confirmed the higher repellence of δ-nonalactone (with/without 4-methylguaiacol) compared to δ-octalactone (also, with/without 4-methylguaiacol). The results show that subtle structural changes of olfactory signals can significantly change their interactions with olfactory receptor neurons, and either shift their potency, or change their activity from repellence to attraction. Our results also lay down useful groundwork in the development of more effective control of tsetse by 'push', 'pull' and 'push-pull' tsetse control tactics.
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