Sex Ratios and Mating Status of the Horn Fly on Pastured Cattle as a Function of Repellent-Oil Treatments
| Autor: | Alec C. Gerry, Diane Soto, Bradley A. Mullens |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Acyclic Monoterpenes 030231 tropical medicine Population Biology 01 natural sciences 03 medical and health sciences Sexual Behavior Animal 0302 clinical medicine Animal science Spermatheca Animals Sex Ratio Mating education education.field_of_study General Veterinary Horn (anatomy) Terpenes fungi Fatty Acids Muscidae biology.organism_classification Treatment period Haematobia irritans 010602 entomology Infectious Diseases Insect Science Insect Repellents Herd Parasitology Cattle Female |
| Zdroj: | Journal of medical entomology. 55(5) |
| ISSN: | 1938-2928 |
| Popis: | Haematobia irritans (L.) (Diptera: Muscidae) were netted from pastured cattle in California over two summers, with the goal of documenting on-host sex ratios and mating success as they might vary with repellent applications. Sex ratios were calculated from 100 adults per herd per date, and mating status of females (n = 30 per herd per date) was assessed by dissection of spermathecae. Flies were collected before, during, and after 2-wk treatment periods with each of two repellent-oil mixtures: a 15% mixture of fatty acids (C8, C9, C10) in mineral oil or a 2% solution of geraniol in mineral oil. During the treatment period, flies were collected 3-4 d after the prior treatment and immediately before the next treatment. A separate herd used in the second year was untreated. Overall, the proportion female was 0.65 ± 0.01 (mean ± SE) (range 0.28-0.81). Sex ratios were not altered over time by treatments with either repellent. Overall, proportion of females mated was 0.744 ± 0.018 (range 0.40-1.00). Mating status was significantly affected by the two repellent treatments, which did not differ from each other. For treatment herds, proportion mated before treatment was 0.789 ± 0.039, dropping significantly to 0.659 ± 0.038 during the treatment period, and rebounding to 0.750 ± 0.035 after treatments ceased. Treatments probably killed or repelled the existing heterogeneous fly population, and during treatment relatively more flies were unmated recent arrivals. |
| Databáze: | OpenAIRE |
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