| 单词 | barber's pole worm |
| 释义 | > as lemmasbarber's pole worm 2. Originally Australian. In full barber's pole worm. A parasitic nematode worm, Haemonchus contortus (family Trichostrongylidae), which feeds on blood from the lining of the abomasum (fourth stomach) of sheep, goats, and other ruminants, causing anaemia. Π 1879 T. S. Cobbold Parasites 346 There were four kinds of parasites present. The most numerous were red and white, ‘marked like a barber's pole’.] 1894 Dubbo Liberal & Macquarie Advocate (New S. Wales) 11 Apr. The whip worm, the barber's pole worm, and the lung worm were found in sheep. 1947 Penguin New Biol. iii. 53 Haemonchus contortus..is sometimes called the barber's pole worm, because when it is alive, its long white ovaries can be seen coiling around its intestine, which has a reddish colour imparted to it by the blood sucked from the abomasum of the sheep. 1989 Land (Sydney) 19 Jan. 24/1 Because Barbers Pole is a blood sucking worm (unlike all others) the symptoms of an infestation are dramatic, causing sheep to lag behind the mob or sit down if stressed. 2008 Nature 13 Mar. 157/1 Drug-resistant strains of Haemonchus contortus, also known as the barber's pole worm, have become common. < as lemmas |
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