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Re-evaluation of endogenous development of Eimeria bareillyi Gill, Chhabra and Lall, 1963 in water buffalo (Bubalus bubalis)

Published online by Cambridge University Press:  25 April 2018

J. P. Dubey
J. P. Dubey*
Affiliation:
United States Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Beltsville, Maryland 20705-2350, USA
*
Author for correspondence: J. P. Dubey, E-mail: [email protected]
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Abstract

Water buffalo (Bubalus bubalis) is important for the economy of Asia, South America and parts of Europe. Coccidiosis is an important cause of neonatal mortality in livestock, including buffalo. Of more than 12 species of Eimeria in buffalo, Eimeria bareillyi is the most pathogenic. There are uncertainties concerning its asexual and sexual development. During a previously reported outbreak of fatal enteritis associated with E. bareillyi in buffaloes in the Netherlands, sections of small intestine were re-evaluated histologically and by transmission electron microscopy (TEM) to seek details of endogenous development. Profuse asexual multiplication occurred in the jejunum and ileum. Light microscopic examination revealed that parasites divided in two (probably endodyogeny) or more organisms. There were two or more generations of morphologically different merozoites; some of these observations were confirmed by TEM. Details of gametogonic development, including oocyst wall formation are provided. Schizogonic and gametogonic development described in the present study can serve as a guide for differential diagnosis of Eimeria species in histological sections of intestines of buffaloes.

Keywords

Bubalus bubalisEimeria bareillyimacrogamontsmicrogamontsoocysts
Type
Research Article
Information
Parasitology , Volume 145 , Issue 14 , December 2018 , pp. 1845 - 1852
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Creative Commons
This is a work of the U.S. Government and is not subject to copyright protection in the United States
Copyright
Copyright © Cambridge University Press 2018

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