Transactions of the Kansas Academy of Science Volume 29

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ...chicks pursuing flies while the old birds were preening their feathers. In the shade of the poultry house flies were crawling over the floor and feeding upon feces, which contained tapeworm embryos. From fowls in the United States six different species of cestodes have been collected. Of these, Davainea proglottina, (Davaine), rare in this country, may be transmitted by a slug (Limax cinereus). Another, Choanotsenia infundibuliformis (Goeze), may be transmitted by the house fly, Musca domestica. The means of transmitting any of the remaining four species was not known until the past summer, when an experiment demonstrated that the housefly may transmit to fowls another of these cestodes, which appears to be Davainea cesticillus (Molin, 1858), Blanchard, 1891. The fowls used in the experiment were hatched in an incubator and placed at once in a fly-proof field cage, where they were given food free from animal tissues, with the exception of an occasional feeding of care 102.-... .";-.-..-Kaygas. Academy of Science. fully selected beef scraps. Flies taken from nature were placed in small, lantern globe, cages, where they were given living embryos from fowl cestodes and kept alive as long as possible, in order to afford time for the development of larval tapeworms (cysticercoids) in the bodies of the flies. By giving to the caged flies small amounts of whole sweet milk daily, fairly large numbers of them were kept alive for two or three weeks after they were fed the tapeworm onchospheres. Upon the death of these flies, they were either preserved for sectioning, or given to young chickens reared in the fly-proof field cage. In this way several hundred house flies were fed, a few at a time, to twelve chickens. In the fowls examined to...