The life history and development of Toxocara cati (Schrank 1788) in the domestic cat.

摘要: 1. An account is given of the history, synonymy and host-range Toxocara cati . 2. Eggs T. were fed to various animals, second-stage larvae found in tissues earthworms, cockroaches, chickens, mice, dogs, lambs cats. 3. Cats successfully infected by feeding eggs mice harbouring tissues. 4. In egg-infected cats liver, lungs, muscles tracheal washings as well digestive tract, indicating that they migrate through 5. lungs muscles, but did not reach alimentary tract. Changes occurred mouth region mouse between 8 11 days after infection, no actual moult was observed. No significant growth observed 6. mouse-infected mostly confined wall contents 7. It appeared second stomach at 3–10 infection; moulting measuring 0·353–0·423 mm. length; a cat (length 0·459–0·765 mm.) 6 infection. 8. both egg- third-stage grew moulted for third time length 0·9–1·2 This about 10 19 9. The smallest fourth-stage whence passed into intestine. Probably are first attached later become free intestinal contents. 10. have lips resembling adult; sexual differentiation occurs during this stage, being evident 1·5 11. fourth intestine approximately 4·5–5·5 12. adult stage lateral alae gradually disappear cervical form 45 female containing vagina measured 55 length. faeces 56 infection eggs. 13. evidence from experimental natural indicated with always takes place birth. 14. tract dogs following either or mice. 15. relationship life history other ascaridid species, habits definitive hosts, relation occurrence human parasite discussed.