. Fox ranching in how some distinctive characteristics; but theyare all remarkable for having projections or narrow wings on either side of the female is larger than the male. The usual habitat of the adult worm is the small intestines, but in foxes theyhave been observed growing in the gall bladder and in the substance of the liver. Inthis case the immature forms migrate through the small duct leading from the gallbladder to the upper portion of the intestines. When the infestation is heavy in young-foxes it is not uncommon to find them in the stomach; indeed the whole intes
. Fox ranching in how some distinctive characteristics; but theyare all remarkable for having projections or narrow wings on either side of the female is larger than the male. The usual habitat of the adult worm is the small intestines, but in foxes theyhave been observed growing in the gall bladder and in the substance of the liver. Inthis case the immature forms migrate through the small duct leading from the gallbladder to the upper portion of the intestines. When the infestation is heavy in young-foxes it is not uncommon to find them in the stomach; indeed the whole intestinalcanal may be completely packed with ascarids from stomach to rectum. 18 The life-history of ascarid worms in foxes has not been fully worked out. Formerlyit was believed that the worm eggs were taken in with the food and developed, directlyin the intestine, into young worms. Swine are infested with similar worms, and ithas been shown by Ransom (1921) that the small immature larval forms after hatching, small intestine. Round Worm Infestation in Four Weeks Old Fox Pup. 276 worms taken from this specimen. pass through the walls of the intestine, gain the Mood stream, and are eventually lodgedin the lungs from whence they gain the wind pipe, are swallowed, and finally settlein the intestine. We are now attempting to find whether this migration of roundworm larva holds good in the case of infested fox pups. If fox worms go through 19 this complicated life history the process must be very rapid as it is not uncommonto find the intestines of young foxes three or four weeks old completely packed withascarids that have reached from one-quarter to one-half their adult length. The symptoms of round worm infestation are more noticeable in the young fox;the animal does riot thrive well, and, in some cases, becomes stunted. The abdomenis distended, a condition usually described as pot belly. There may be evidenceof disordered digestion, such as irregular appetite, colic, diarrhoea or c
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