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United States Department of Agriculture

Agricultural Research Service

Title: The Synlophe and Other Structural Characteristics of Sarwaria Bubalis (Nematoda: Trichostrongyloidea) from Cattle in Guyana

item Lichtenfels, James
item Hoberg, Eric
item Pilitt, Patricia
item Craig, Thomas - TEXAS A&M UNIV, TX

Submitted to: Journal of Parasitology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: August 29, 1995
Publication Date: N/A

Interpretive Summary: The Ostertagiinae are medium stomach worms that are parasitic in domestic and wild ruminants. They are the most pathogenic nematode parasites in cattle, sheep and goats in the United States and worldwide. Sarwaria bubalis was imported into South America with the water buffalo, Bubalus bubalis, where it now infects domestic cattle. As part of a systematic study of the subfamily Ostertagiinae, S. bubalis is described. The new information will be useful to veterinarians in identifying the nematode. The systematic study of the subfamily is essential to the development of control methods for the nematodes.

Technical Abstract: The synlophe (longitudinal, surface cuticular ridges) of Sarwaria bubalis is described for the first time. It is a tapering lateral synlophe of about 40 ridges. The synlophe of S. bubalis is similar to that of Ostertagia ostertagi, but markedly different from that of species of Spiculopteragia and Mazamastrongylus. New information is provided on the structure of the esophagus, spicule tips and perivulval pores. The esophageal valve is more than twice as long as wide. The new information will be useful in a study of the generic level systematics of the Ostertagiinae. Sarwaria bubalis appears to be well established in tropical South America where it infects its normal host, the Asian water buffalo, Bubalus bubalis, as well as domestic cattle.

Last Modified: 4/18/2015
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