| Autor: |
Guglielmone AA; Departamento de Producción Animal, Estación Experimental Rafaela, INTA, Santa Fe, Argentina., Volpogni MM, Anziani OS, Flores SG |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of medical entomology [J Med Entomol] 1999 May; Vol. 36 (3), pp. 325-8. |
| DOI: |
10.1093/jmedent/36.3.325 |
| Abstrakt: |
The effect of 200 micrograms/kg of body weight of injectable 1% abamectin to control Hematobia irritans (L.) was evaluated in heifers treated every 45 or 63 d versus control heifers. Fly numbers were estimated every 7 d with additional counts on days 1, 4, and 10 after treatment. Samples of feces were obtained up to 28 d after treatment from treated and control heifers to culture H. irritans in the laboratory. The H. irritans population reduction for 14 d after treatment ranged from 51% (3rd treatment of heifers treated every 45 d) to > 73% in the 1st treatments of both groups of heifers and the 2nd treatment of the group treated every 63 d. Medication every 45 d did not provide a better control than treatment every 63 d. The abamectin arrested the immature stages for 7 d after the 1st treatment; this period increased to 28 d after the 3rd treatment but its effect on heifer infestation was low, probably because of fly immigration. Abamectin may help maintain H. irritans populations below the threshold of economic damage. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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