Abstract
The rhesus monkey is an important animal model to study human vaginal health to which lactic acid bacteria play a significant role. However, the vaginal lactic acid bacterial species richness and relative abundance in rhesus monkeys is largely unknown. Vaginal swab samples were aseptically obtained from 200 reproductive-aged female rhesus monkeys. Following Rogosa agar plating, single bacterial colonies representing different morphotypes were isolated and analyzed for whole-cell protein profile, species-specific polymerase chain reaction, and 16S rRNA gene sequence. A total of 510 Lactobacillus strains of 17 species and one Pediococcus acidilactici were identified. The most abundant species was Lactobacillus reuteri, which colonized the vaginas of 86% monkeys. Lactobacillus johnsonii was the second most abundant species, which colonized 36% of monkeys. The majority of monkeys were colonized by multiple Lactobacillus species. The vaginas of rhesus monkeys are frequently colonized by multiple Lactobacillus species, dominated by L. reuteri.
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