Suspected Laminosioptes cysticola (fowl cyst mite) lesions in backyard chickens in southern England

Andrew Grist, David G Parsons, Carlo Bianco, Alessandra Cafiso, Aiden P Foster*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)
64 Downloads (Pure)

Abstract

Postmortem examination of poultry from several backyard flocks in the south of England revealed five chickens (Gallus gallus) from one backyard flock with lesions compatible with the fowl cyst mite (Laminosioptes cysticola). All affected birds were mature hens and had subcutaneous and fascial, randomly scattered, 1–5 mm, calcareous nodules. Histological findings included a thin fibrous capsule, embedding glassy, pale basophilic acellular material that stained positive with von Kossa histochemistry consistent with mineralization. There were also some granulomatous lesions, detected in two of five birds, that were biconvex and made of an accumulation of amorphous eosinophilic material, collagen-like fibrillary material and fibroblasts, embedding some yellow to brown, refractile flakes and fragments of foreign bodies (suspected acarid exoskeletal remnants). Fresh and formalin-fixed tissues were examined by PCR for mite DNA with no positive results. Laminosioptes mites may be present in British backyard poultry
Original languageEnglish
Article numbere460
JournalVeterinary Record Case Reports
Volume10
Issue number4
Early online date28 Jul 2022
DOIs
Publication statusPublished - 28 Jul 2022

Bibliographical note

Funding Information:
Tissues from one of the cases were originally examined after histological processing by Jan Bradshaw. The authors thank Nick Hunt of the University of Bristol and colleagues at APHA Lasswade, Scotland, for providing the histology slides (including Alex Schock and David Welchman retired head of the APHA Avian Expert Group).

Publisher Copyright:
© 2022 The Authors. Veterinary Record Case Reports published by John Wiley & Sons Ltd on behalf of British Veterinary Association.

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