The dispersion of the Karoo paralysis tick, Ixodes rubicundus, within a naturally infested population of sheep in South Africa.
Vet Parasitol
; 34(4): 345-52, 1990 Jan.
Article
em En
| MEDLINE
| ID: mdl-2316179
ABSTRACT
The ratio of variance to mean (s2/means) of numbers of Ixodes rubicundus (males and females) per sheep was used as a measure of the dispersion pattern of this tick within a naturally infested population of sheep. Sheep were divided into two groups, one with previous contact with I. rubicundus and the other with no previous contact. Samples of 10 sheep from each group were searched for ticks on a weekly basis for 19 weeks during the winter of 1986. In each group, both male and female ticks had an s2/means ratio greater than 1 for the majority of observation periods indicating an aggregated dispersion pattern. The degree of aggregation was greater with increasing density of the ticks. The implications of these results are discussed both in relation to sampling procedures and potential control strategies.
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Base de dados:
MEDLINE
Assunto principal:
Doenças dos Ovinos
/
Infestações por Carrapato
/
Carrapatos
Limite:
Animals
País como assunto:
Africa
Idioma:
En
Ano de publicação:
1990
Tipo de documento:
Article