Twenty-one of 24 adult male and female cattle egrets (Bubulcus ibis ibis) collected in Geneva County, Alabama had numerous white cyst-like structures (1,466 μm × 354 μm) found within the loose connective tissues of the skeletal muscles of the inguinal region, beneath the serosa of the proventriculus and in the heart beneath the epicardium (one adult male bird). These were identified as hypopi of Hypodectes (Hypodectoides) propus bulbuci. Histologic sections were prepared from the subcutis, proventriculus and heart. The histopathologic changes consisted of cross sections of mites surrounded by macrophages often containing basophilic or clear intracytoplasmic vacuoles and by plasma cells. A minimal fibrous encapsulation was rarely seen surrounding the mites.
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1 October 1987
Visceral and Subcutaneous Acariasis Caused by Hypopi of Hypodectes propus bulbuci in the Cattle Egret
Charles M. Hendrix,
Robert P. Kwapien,
John R. Porch
Journal of Wildlife Diseases
Vol. 23 • No. 4
October 1987
Vol. 23 • No. 4
October 1987
Acari
Bubulcus ibis ibis
case report
Cattle Egret
histopathology
Hypodectes (Hypodectoides) propus bulbuci
Hypoderatidae