Vertical migratory behavior of the infective third-stage larvae of Oesophagostomum dentatum.
The vertical migratory behavior of third-stage infective larvae (L3i) of Oesophagostomum dentatum was investigated using upright truncated agarose cones and equivalent conical depressions in agarose. Geotactic response varied with the age of the infective larvae. Four-day-old L3i showed no preference for the sloping surfaces of either indented or upright cones, while the 8-day-old L3i showed a positive geotactic reaction, migrating down the sloping surface of the depressions.
Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Rosenthal Building Room 212, Philadelphia, PA 19104, USA.
A R
AR
Ketschek
A S
AS
Freeman
R
R
Boston
P L
PL
Habecker
F T
FT
Ashton
G A
GA
Schad
D000818:Animals; D007411:Intestinal Diseases, Parasitic / Q000469:parasitology / Q000662:veterinary*; D007814:Larva / Q000502:physiology; D009814:Oesophagostomiasis / Q000469:parasitology / Q000662:veterinary*; D009815:Oesophagostomum / Q000302:isolation & purification / Q000502:physiology*; D013552:Swine; D013553:Swine Diseases / Q000469:parasitology*