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Bunostomum : ウィキペディア英語版
Bunostomum

''Bunostomum'' species are nematodes of the small intestine of ruminants and camelids. Important species include: ''B. phlebotomum'' in calves and ''B. trigonocephalum'' in lambs. The worms are stout and measure in length. Young animals are most commonly affected and only several hundred worms are necessary to cause morbidity. Adults often carry worms without showing clinical signs.
==Life cycle==
The life cycle is direct, with a prepatent period of 7–9 weeks. Eggs hatch on the ground and develop into infective larvae in several weeks. Larvae penetrate through the skin or are ingested and then migrate to the respiratory system, are coughed up and swallowed and finally reach the small intestine. Eggs are then shed in the faeces of the infected host.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Bunostomum」の詳細全文を読む



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