Spirurids, specifically the Rictularia, Chitwoodspirura, Streptopharagus, and Protospirura genera, have been reported to parasitize all nonhuman primate taxa. Spirurid pathogenesis in nonhuman primates has not been reported frequently; however, Protospirura muricola has been associated with serious gastric pathologies, including gastric perforation. This study was a retrospective study of 38 vervet monkey (Chlorocebus pygerythrus) necropsies performed in a primate sanctuary that houses captive orphaned or injured wild-born vervet monkeys. Individuals were categorized according to their age, sex, and body condition score to investigate the relationships between these factors and parasite presence. This study identified P. muricola in 47.37% of the necropsied carcasses. Regarding individual factors associated with P. muricola infection, no significant differences between males and females were observed; however, relationships between parasite presence and poor body condition and advanced host age were observed. Furthermore, one monkey death was potentially directly related to spirurid pathogenic action, because the individual showed gastric perforation.
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