Case # 6: Geese from Texas Purvis et al. 1997 Neil Schock Matt Igleski.

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Presentation transcript:

Case # 6: Geese from Texas Purvis et al Neil Schock Matt Igleski

Study Hosts 22 White-fronted Geese (Anser albifrons) 24 Snow Geese (Chen caeulescens) 10 Canada Geese (Branta canadensis) n= 56

Methods Shot with a rifle December-February: ‘91- ‘92, ‘92- ‘93 Froze esophagus, proventriculus, and gizzard Examined for gross lesions with dissecting scope

Symptoms Virtually every bird had: –Gross mucosal erosion –Pigment deposition No signs of significant tissue damage No gross tissue damage No correlation of host weight and parasite abundance

Diagnosis What is the disease? –Cause of death? –Symptoms indicative of? –Host? Management implications?

Diagnosis: Answer Gizzard worm

Management Possibly density dependent –So limiting densities could slow transmission ?

Exam question What organs were examined for general helminth surveys? esophagus, proventriculus, and gizzard