Abstract
A study was undertaken at Edinburgh Zoo to investigate gastrointestinal nematodiasis in blackbuck (Antilope cervicapra) involving Camelostrongylus mentulatus and to a lesser extent Nematodirus spathiger. Camelostrongylus mentulatus was associated with chronic emaciation and the death of a subdominant adult male animal following fighting. It was found to overwinter as infective larvae on pasture, and circumstantial evidence suggests that it may also do so as adults and arrested larvae within the blackbuck. Control was not achieved until anthelmintics were given monthly from June onward. This regime successfully reduced fecal egg counts and pasture larvae of C. mentulatus, but numbers of N. spathiger larvae on pasture were unaffected and reached a peak in mid-August. The possible factors involved in this infection and their impact on neonatal viability are briefly discussed.
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