Biological characteristic of the Hypoderma spp. in yak
2007
Li, W.(Qinghai Univ. (China)) | Nasu, T.
The biological characteristic of the warble fly that parasitizes yaks was studied on the Tibetan high plateau in China. The warbles in which the larvae remained were commonly seen in the skin of the yak's back. Almost all the larvae that parasitized the yak were H. sinense (90%), with others including H. bovis (5%) and H. lineatum (5%). From March to June, the larvae dropped to the ground through the hole of the yak's skin. Almost all the larvae emergences were completed in April. It takes about sixty-six days for all the larvae on one yak to fall from the back. The larva burrowed into the soil and changed to the pupa after about three days. The pupal stage lasted until the end of July (about 104 days) and only 24.4% of the pupae could grow into adult flies by way of eclosion. The flies laid the eggs on the abdominal and thoracic hairs of the yak. They lived one to thirteen days.
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