Summary
The infective stage of the oesophageal tumour worm of dog: Spirocerca lupi (Rudolphi, 1809, Spirurinae: Spiruridae) was encountered during examination of four of the fourteen species of the dung-beetles. The larval form has been described and its experimental infection studied in two rabbits in which there was not only reencystment in the gastric wall but some of the juveniles, entering the aorta, had caused the development of typical lesion of aortic “spirocercosis”. The aortic specimens included pre-adults and an adult female. This finding of the fourth and the fifth stage juveniles including a mature female is of particular interest as it has confirmed the earlier observations, from this Department, on the recovery of the juveniles of S. lupi from the bulbous aorta of the equine, the caprine and bubaline hosts. These specimens were, however, much smaller in size than those found in the normal definitive host and those known from the abnormal hosts reported. The histopathology of the various lesions has also been described.
Zusammenfassung
Das infektiöse Larvenstadium des zum Oesophagus-Tumor führenden Hunde-Nematoden Spirocerca lupi (Rudolphi, 1809, Spirurinae: Spiruridae) wurde im Verlauf der Untersuchung bei 4 Arten (von 14) aus der Familie der Scara baeciden gefunden. Das Larvenstadium wird beschrieben und die experimentelle Infektion bei 2 Kaninchen studiert, bei denen es nicht nur zu einer Wiederencystierung in der Magenwand kam, sondern auch einige junge Tiere in die Aorta einwanderten und dort zu dem typischen Bild der „Aortenspirocercose“ führten. Diese in der Aorta befindlichen Stadien schließen präadulte und adulte Weibchen ein. Die Auffindung von 4. und 5. jugendlichen Stadien einschließlich eines reifen Weibchens ist von besonderem Interesse, da sie frühere Beobachtungen aus dem Institut, nach denen junge Stadien von S. lupi aus dem Bulbus der Aorta des Pferdes, des Schafes und des asiatischen Büffels gefunden wurden, bestätigt. Diese Exemplare waren jedoch viel kleiner als diese, die man im normalen definitiven Wirt fand, und solchen, die aus einem abnormen Wirt beschrieben waren. — Außerdem wurde die Histopathologie der verschiedenen Schädigungen beschrieben.
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Chowdhury, N., Pande, B.P. The development of the infective larva of the canine oesophageal tumour worm Spirocerca lupi in rabbits and its histopathology. Z. F. Parasitenkunde 32, 1–10 (1969). https://doi.org/10.1007/BF00259958
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DOI: https://doi.org/10.1007/BF00259958