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Histopathology of lesions caused by Pseudocorynosoma constrictum (Acanthocephala: Polymorphidae) in the ileum of blue-winged teal

Published online by Cambridge University Press:  23 June 2020

C. Caballero-Viñas Open the ORCID record for C. Caballero-Viñas [Opens in a new window]  and
P. Sánchez-Nava Open the ORCID record for P. Sánchez-Nava [Opens in a new window]
C. Caballero-Viñas
Affiliation:
Laboratorio de Sistemas Biosustentables, Facultad de Ciencias, Universidad Autónoma del Estado de México, Campus Universitario ‘El Cerrillo’ El Cerrillo Piedras Blancas, Carretera Toluca-Ixtlahuaca Km 15.5, CP 50200, Toluca, Estado de México, Mexico
P. Sánchez-Nava*
Affiliation:
Laboratorio de Sistemas Biosustentables, Facultad de Ciencias, Universidad Autónoma del Estado de México, Campus Universitario ‘El Cerrillo’ El Cerrillo Piedras Blancas, Carretera Toluca-Ixtlahuaca Km 15.5, CP 50200, Toluca, Estado de México, Mexico
*
Author for correspondence: P. Sánchez-Nava, E-mail: psn@uaemex.mx
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Abstract

Pseudocorynosoma constrictum (Van Cleave, 1918) is a polymorphid acanthocephalan that attaches to the digestive tract of waterfowl to complete its life cycle, causing severe histological damage to its definitive avian hosts. In the present study, we present a histopathological analysis of the lesions that P. constrictum induced in the layers of the ileum of the blue-winged teal Anas discors. The results revealed that worms insert the attachment structures into the inner gut muscular layer, which causes substantial swelling, haemorrhaging and necrosis in the tissue near the parasite's proboscis. We also observed that the number of parasites attached to the tissue can obstruct the intestinal lumen; in the most serious case, we observed more than 30 parasites penetrating completely the walls of the bird intestine.

Keywords

AcanthocephalaPseudocorynosoma constrictumAnas discorsAnatidaeState of Mexico
Type
Short Communication
Information
Journal of Helminthology , Volume 94 , 2020 , e166
Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press

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