Blood-feeding host preferences of the isomorphic species Simulium venustum and S. truncatum.

摘要: Animal-baited traps, using fox, mink, rabbits and ducks, were used in host preference experiments two habitats (Beach Woods). A generalized linear model of blood-feeding is presented to test for significant differences between the isomorphic species Simulium venustum truncatum. The S. truncatum population peaked before that venustum. On any given day divided their efforts among different hosts same proportions. Beach, fox was preferred at beginning season, but by end season flies fed with equal frequency on mink. In Woods remained throughout (late May early July). Possible reasons these feeding trends are discussed.