Observations on the migration and development of Toxocara vitulorum in natural and experimental hosts |
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| Authors: | E G Warren |
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| Affiliation: | 1. University of Missouri, Division of Plant Sciences, 110 Waters, Columbia, MO 65211, United States;2. University of Wyoming, Department of Animal Science, 1000 E. University Ave, Laramie, WY 82071, United States;3. Texas A&M AgriLife Research, 7887 U.S. Hwy 87 N, San Angelo, 76901, United States;1. Division of Animal and Nutritional Sciences, West Virginia University, Morgantown WV 26505, USA;2. Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg VA 24061, USA;1. RMO, 111 Rocket Regiment, C/o 56 APO, India;2. Officer Commanding, Station Health Organisation, Kirkee, India;1. Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA;2. Infectious Bacterial Diseases Research Unit, National Animal Disease Center, Ames, IA;1. School of Physics & Information Technology, Shaanxi Normal University, Xi’an 710119, China;2. School of Science, Xi’an University of Posts and Telecommunications, Xi’an 710119, China;3. The Key Laboratory for Surface Engineering and Remanufacturing of Shaanxi Province, Xi’an University, Xi’an 710065, China;4. State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China;2. Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista, s/n, Valonguinho 24020-141, Niterói, RJ, Brazil |
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| Abstract: | Experimental infection of pregnant cows with eggs of T. vitulorum resulted in mature infections. Larvae possessing an oesophageal ventriculus were found in the milk of infected cows; these were considered to the 3rd-stage larvae of T. vitulorum. Some foster calves drinking milk from experimentally infected cows acquired T. vitulorum infections. All calves withdrawn from infected cows within 24 h of birth failed to develop T. vitulorum infections. the migration and fate of T vitolorum in an experimetnal host (the mouse) were studied. Measurements and figures are given of 1st-stage and 2nd-stage larvae from the egg, 2nd-stage larvae from the mouse, 3rd-stage larvae from bovine milk and 3rd-, 4th- and adult stages from the small intestine contents of calves. The writer concludes that T. vitulorum larvae undertake a transmammary migration in cattle and that calves acquire infection from their mothers after birth. The writter also concludes that T. vitulorum larvae undertake a somatic migration in mice. |
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