Intermediate site of development of Anaplasma marginale in feeding adult Dermacentor andersoni ticks that were infected as nymphs.
Am J Vet Res
; 51(1): 128-32, 1990 Jan.
Article
en En
| MEDLINE
| ID: mdl-2301812
The development of Anaplasma marginale in midgut epithelial cells was studied in feeding, transmitting adult Dermacentor andersoni ticks. Laboratory-reared ticks experimentally infected as nymphs were allowed to feed from 1 to 9 days on susceptible calves. Gut tissues from ticks were collected on each day they fed (total, 9 days) and were processed for light and transmission electron microscopy. Colonies of A marginale were abundant during the first 6 days of feeding, after which numbers decreased. Colonies were adherent to the basement membrane of gut cells early during feeding, with resultant flattening of the colonies. Colonies also were seen in muscle cells on the hemocoel side of the basement membrane. Morphologic features of A marginale within muscle cells varied and were similar to those observed in gut cells. In addition, however, a large reticulated form in the colonies was observed in muscle cells and appeared to give rise to small particles by budding. Development of A marginale in muscle cells appears to represent an intermediate site of development between those in gut and in salivary glands.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Garrapatas
/
Membrana Basal
/
Dermacentor
/
Anaplasma
Límite:
Animals
Idioma:
En
Revista:
Am J Vet Res
Año:
1990
Tipo del documento:
Article
Pais de publicación:
Estados Unidos