Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticks
Ticks and tick-borne diseases cause significant loss in livestock production with about 80% world's cattle at risk. The cost of chemical control is high and there is an ever-increasing tick resistance to chemical acaricides. Genetic selection as alternative long-term control strategy is constra...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-09-01
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| Series: | Ticks and Tick-Borne Diseases |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1877959X2300081X |
| _version_ | 1827812191882969088 |
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| author | Oswald Matika Sarah Foster Naftaly Githaka Gad Owido Collins Ngetich Charles Mwendia Helen Brown John Caulfield Kellie Watson Appolinaire Djikeng Michael Birkett |
| author_facet | Oswald Matika Sarah Foster Naftaly Githaka Gad Owido Collins Ngetich Charles Mwendia Helen Brown John Caulfield Kellie Watson Appolinaire Djikeng Michael Birkett |
| author_sort | Oswald Matika |
| collection | DOAJ |
| description | Ticks and tick-borne diseases cause significant loss in livestock production with about 80% world's cattle at risk. The cost of chemical control is high and there is an ever-increasing tick resistance to chemical acaricides. Genetic selection as alternative long-term control strategy is constrained by laborious phenotyping using tick counts or scores. This study explored the use of host volatile semiochemicals that may be attractants or repellents to ticks as a phenotype for new tick resistance, with potential to be used as a proxy in selection programmes. Approximately 100 young cattle composed of Bos indicus and Bos taurus were artificially infested with 2,500 African blue tick, Rhipicephalus decoloratus larvae, with daily female tick (4.5 mm) counts taken from day 20 post-infestation. Volatile organic compounds were sampled from cattle before and after tick infestation by dynamic headspace collection, analysed by high-resolution gas chromatography (GC) and subjected to multivariate statistical analysis. Using 6-day repeated measure analysis, three pre-infestation GC peaks (BI938 - unknown, BI966 - 6-methyl-5-hepten-2-one and BI995 – hexyl acetate) and one post-infestation GC peak (AI933 – benzaldehyde / (E)-2-heptenal) were associated with tick resistance (P < 0.01 and P < 0.05 respectively). The high correlation coefficients (r = 0.66) between repeated records with all volatile compounds support the potential predictive value for volatile compounds in selective breeding programmes for tick resistance in cattle. |
| first_indexed | 2024-03-11T23:15:24Z |
| format | Article |
| id | doaj.art-4ba7757e2d94473fb43b6c7afcf5a904 |
| institution | Directory Open Access Journal |
| issn | 1877-9603 |
| language | English |
| last_indexed | 2024-03-11T23:15:24Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ticks and Tick-Borne Diseases |
| spelling | doaj.art-4ba7757e2d94473fb43b6c7afcf5a9042023-09-21T04:36:23ZengElsevierTicks and Tick-Borne Diseases1877-96032023-09-01145102200Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticksOswald Matika0Sarah Foster1Naftaly Githaka2Gad Owido3Collins Ngetich4Charles Mwendia5Helen Brown6John Caulfield7Kellie Watson8Appolinaire Djikeng9Michael Birkett10The Roslin Institute and R(D)SVS, University of Edinburgh, Easter Bush Campus EH25 9RG, UK; Centre for Tropical Livestock Genetics and Health (CTLGH), Roslin Institute, University of Edinburgh, Easter Bush Campus EH25 9RG, UK; Corresponding author.Protecting Crops and the Environment, Rothamsted Research, Harpenden, Herts AL5 2JQ, UKThe Tick Unit, International Livestock Research Institute (ILRI), PO Box 30709, Nairobi 00100, KenyaThe Tick Unit, International Livestock Research Institute (ILRI), PO Box 30709, Nairobi 00100, KenyaThe Tick Unit, International Livestock Research Institute (ILRI), PO Box 30709, Nairobi 00100, KenyaBiochemistry & Molecular Biology Department, Egerton University, PO Box 536-20115, Egerton, KenyaThe Roslin Institute and R(D)SVS, University of Edinburgh, Easter Bush Campus EH25 9RG, UKProtecting Crops and the Environment, Rothamsted Research, Harpenden, Herts AL5 2JQ, UKThe Roslin Institute and R(D)SVS, University of Edinburgh, Easter Bush Campus EH25 9RG, UK; Centre for Tropical Livestock Genetics and Health (CTLGH), Roslin Institute, University of Edinburgh, Easter Bush Campus EH25 9RG, UKCentre for Tropical Livestock Genetics and Health (CTLGH), Roslin Institute, University of Edinburgh, Easter Bush Campus EH25 9RG, UK; Department of Agriculture and Animal Health, College of Agriculture and Environmental Sciences, University of South Africa, Pretoria, South AfricaProtecting Crops and the Environment, Rothamsted Research, Harpenden, Herts AL5 2JQ, UKTicks and tick-borne diseases cause significant loss in livestock production with about 80% world's cattle at risk. The cost of chemical control is high and there is an ever-increasing tick resistance to chemical acaricides. Genetic selection as alternative long-term control strategy is constrained by laborious phenotyping using tick counts or scores. This study explored the use of host volatile semiochemicals that may be attractants or repellents to ticks as a phenotype for new tick resistance, with potential to be used as a proxy in selection programmes. Approximately 100 young cattle composed of Bos indicus and Bos taurus were artificially infested with 2,500 African blue tick, Rhipicephalus decoloratus larvae, with daily female tick (4.5 mm) counts taken from day 20 post-infestation. Volatile organic compounds were sampled from cattle before and after tick infestation by dynamic headspace collection, analysed by high-resolution gas chromatography (GC) and subjected to multivariate statistical analysis. Using 6-day repeated measure analysis, three pre-infestation GC peaks (BI938 - unknown, BI966 - 6-methyl-5-hepten-2-one and BI995 – hexyl acetate) and one post-infestation GC peak (AI933 – benzaldehyde / (E)-2-heptenal) were associated with tick resistance (P < 0.01 and P < 0.05 respectively). The high correlation coefficients (r = 0.66) between repeated records with all volatile compounds support the potential predictive value for volatile compounds in selective breeding programmes for tick resistance in cattle.http://www.sciencedirect.com/science/article/pii/S1877959X2300081XBos taurus and Bos indicus CattleTick resistanceSemiochemicalNovel tick resistance phenotypes |
| spellingShingle | Oswald Matika Sarah Foster Naftaly Githaka Gad Owido Collins Ngetich Charles Mwendia Helen Brown John Caulfield Kellie Watson Appolinaire Djikeng Michael Birkett Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticks Ticks and Tick-Borne Diseases Bos taurus and Bos indicus Cattle Tick resistance Semiochemical Novel tick resistance phenotypes |
| title | Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticks |
| title_full | Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticks |
| title_fullStr | Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticks |
| title_full_unstemmed | Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticks |
| title_short | Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticks |
| title_sort | investigating volatile semiochemical production from bos taurus and bos indicus as a novel phenotype for breeding host resistance to ixodid ticks |
| topic | Bos taurus and Bos indicus Cattle Tick resistance Semiochemical Novel tick resistance phenotypes |
| url | http://www.sciencedirect.com/science/article/pii/S1877959X2300081X |
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