Fatal strongyloidiasis in gibbons (Hylobates lar).

Area of Science:

• Veterinary Pathology
• Primate Medicine
• Parasitology

Background:

• Strongyloidiasis is a parasitic disease caused by Strongyloides species.
• Gibbons (Hylobatidae) are endangered apes susceptible to various infections.
• Understanding parasitic impact is crucial for primate conservation and welfare.

Purpose of the Study:

• To determine the prevalence and pathological effects of strongyloidiasis in a gibbon colony.
• To identify clinical and necropsy findings associated with gibbon strongyloidiasis.
• To evaluate the significance of strongyloidiasis as a cause of mortality in gibbons.

Main Methods:

• Retrospective analysis of necropsy records from a gibbon colony over six years.
• Examination of gross and microscopic lesions in gastrointestinal tract, lungs, and other tissues.
• Correlation of pathological findings with clinical signs.

Main Results:

• Strongyloidiasis identified as the most frequent cause of death in 24 cases.
• Common clinical signs included diarrhea, weight loss, and dyspnea.
• Pathological findings included enteritis, enterocolitis, and severe pulmonary hemorrhage linked to Strongyloides larvae.

Conclusions:

• Strongyloidiasis is a significant cause of mortality in gibbons, characterized by severe gastrointestinal and pulmonary pathology.
• The study highlights the potential for widespread larval dissemination and hyperinfection in gibbons.
• Findings underscore the importance of parasitic disease surveillance in captive primate populations.