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在结膜吸吮线虫病流行区,对变色纵眼果蝇的生态习性进行了观察。它出现于5～11月,高峰季节为6～9月。与本病在犬中的流行季节相一致。10月份此种果蝇在室温下可越冬,有19%能存活至次年5月,长达7个月之久,并能繁殖出第2代新蝇。变色纵眼果蝇尤其雄蝇对终宿主(人和犬)眼都有趋向性。嗜吸终宿主的泪液等眼分液物。其体内的结膜吸吮线虫感染期幼虫,在叮吸眼分泌物时即逸出,进入终宿主眼内而致感染。观察到变色纵眼果蝇活动于村舍周围,不进入室内。由此证明感染结膜吸吮线虫的场所是在室外环境。
In the endemic area of conjunctival sucking nematode, the ecological habits of discoloration and longitudinal fruit flies were observed. It appears from May to November and peak season from June to September. In line with the disease in the dog’s popular season. In October, the fruit flies overwintered at room temperature, and 19% survived to May the following May for as long as seven months and bred the second generation of new flies. Drosophila longitudinal fruit flies, especially male flies on the final host (human and canine) eye tendency. Suction end host tears and other eye liquid sub-liquid. The body’s conjunctiva suck nematode infection larvae, when the eye drops secretions that escape, into the final host eye infection. Drosophila was observed to move around the cottage without moving into the room. Thus proving the location of the conjunctival sucking nematode is in the outdoor environment.