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The Epizootiology of Macracanthorhynchus ingens in Louisiana

Clarence A. Elkins and Brent B. Nickol
The Journal of Parasitology
Vol. 69, No. 5 (Oct., 1983), pp. 951-956
DOI: 10.2307/3281063
Stable URL: http://www.jstor.org/stable/3281063
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Epizootiology of Macracanthorhynchus ingens in Louisiana
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Abstract

Raccoons infected in the laboratory allowed a previously unidentified cystacanth from woodroaches, Parcoblatta pennsylvanica, and various colubrid and viperid snakes in Louisiana to be identified as Macracanthorhynchus ingens. The epizootiology of M. ingens in Louisiana was studied by feeding trials devised to illustrate development and possible pathways of transmission. The woodroach was documented as a naturally-occurring, first intermediate host. Cystacanths of M. ingens from woodroaches were capable of establishing viscerally in snakes or developing to adulthood in raccoon intestines. Those from snakes were capable of subsequently maturing in the gut of raccoons. Possible transmission pathways have been established from woodroach to raccoon and from woodroach to snake to raccoon. Investigation of feeding habits and habitat preference of the animals involved suggests that both pathways function in nature.

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