Feeding predilection of Gulf Coast tick, Amblyomma maculatum Koch, nymphs on cattle
Autor: | Michael T. Longnecker, Pete D. Teel, O. F. Strey, H.R. Ketchum |
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Rok vydání: | 2005 |
Předmět: |
Hypersensitivity
Immediate Nymph Tick infestation Veterinary medicine Ixodidae Withers Cattle Diseases Tick medicine.disease_cause Random Allocation parasitic diseases Infestation medicine Animals Amblyomma maculatum integumentary system General Veterinary biology Feeding Behavior General Medicine Kansas biology.organism_classification medicine.disease Texas Tick Infestations Biological dispersal Cattle Female Parasitology Gulf coast tick |
Zdroj: | Veterinary Parasitology. 133:349-356 |
ISSN: | 0304-4017 |
Popis: | Gulf Coast tick nymphs successfully attached and fed on cattle after being freely released. Six Hereford heifers were each infested with approximately 2000 Gulf Coast tick nymphs, three with a strain originating from Refugio Co., TX, and three with ticks from Osage Co., KS by free release on the head and legs to simulate field acquisition of questing nymphs. Two re-infestations were conducted, the first at 7 days and the second at 28 days. Nymph dispersal was estimated by daily inspection of 22 body areas and removal of engorging ticks from the third to the fifth days post-infestation. Total recovery of engorging Texas nymphs was 3.0, 10.2, and 0% and Kansas nymphs was 21.5, 3.3, and 0% for infestations one, two and three, respectively. Immunological resistance to tick infestation expressed as cellular hypersensitivity was evident against Kansas nymphs in the second infestation and against both tick strains in the third infestation. Ticks removed from the withers, midline, and tail-head areas accounted for 68% of the total nymphs recovered in the first two infestations. Within these areas, nymphs were observed to aggregate in small spots where the hair was less dense or naturally parted and the remainder were found scattered in dense hair. |
Databáze: | OpenAIRE |
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