[The attack distance and the range and nature of the daily flight dispersion of horseflies in the genus Hybomitra (Diptera: Tabanidae)].
The experiments on the capture-recapture of horse-flies of the genus Hybomitra at different distance from a single pasturing cow have been conducted in the Pskov region in fields with sections of forest. A chaotic flying away of horse-flies was observed; presence or absence of a direct visibility of an object did not influence on the number of horse-flies coming to it from a distance more than 150 m. The search flight of horse-flies has a complicated trajectory, that increases the probability to find a host in 2.5 times approximately, as compared with a straightforward one. In the case of distance less than 50 meters a quota of horse-flies flying towards a cow can reach 100% (this conclusion derives from the assumption that all horse-flies, which have discovered host, are sure to attack it). Mean value of daily flying about is approximately 1 km, maximum is about 2 km.
Konstantinov
S A
SA
D000818:Animals; D001769:Blood; D002417:Cattle / Q000469:parasitology; D002940:Circadian Rhythm; D004175:Diptera / Q000502:physiology*; D005247:Feeding Behavior; D005426:Flight, Animal; D006790:Host-Parasite Interactions; D012426:Russia
Distantsiia napadeniia, dal'nost i kharakter sutochnogo razleta slepneĭ roda Hybomitra (Diptera: Tabanidae).