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Licensed Unlicensed Requires Authentication Published by De Gruyter January 17, 2018

Pathological and molecular studies of the renal trematode Paratanaisia bragai in Indian peafowls (Pavo cristatus)

M. Asok Kumar, Deepak Kumar, Munuswamy Palanivelu, Latchumikanthan Annamalai, Karikalan Mathesh, Rajendra Singh, Anil Kumar Sharma and Kuldeep Dhama
From the journal Acta Parasitologica


Endoparasitic diseases are commonly encountered in free-ranging birds. Although not all endoparasites cause disease, persistent infection with large numbers of parasites almost always affects normal physiological functions, leading to deleterious effects on the host. This paper describes the anatomopathological alterations caused by the renal trematode Paratanaisia bragai in Indian peafowl (n = 3) and examines the phylogeny of these and related parasites. Peafowl from forests in and around the Bareilly region, Uttar Pradesh, India, were necropsied, and microscopic and molecular investigations were performed. The peafowl were confirmed to be infected with P. bragai. Significant gross pathological lesions suggested nephrosis, and microscopic findings indicated a mild-to-moderate degree of nephrosis caused by the parasites in the tissue. The parasites were identified as P. bragai by histomorphological analysis of adult and eggs in the ureters, and the identification was confirmed by PCR and phylogenetic analysis. Nucleotide sequencing of the PCR products from the renal trematodes recovered from Indian peafowl revealed a close association with P. bragai from Columbiformes in the United Kingdom and Spain. The pathology and molecular epidemiology of parasitic diseases affecting peafowl is not well understood in India. This is the first report from India and the second report worldwide to document P. bragai infection in peafowl.

  1. Disclosure statement: The authors declare that they have no competing interests.


We thank the Director, ICAR-Indian Veterinary Research Institute (IVRI) for providing necessary research facilities and support.


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Received: 2017-3-20
Revised: 2017-11-20
Accepted: 2017-11-24
Published Online: 2018-1-17
Published in Print: 2018-3-26

© 2018 W. Stefański Institute of Parasitology, PAS