Abstract
We investigated the occurrence and genotypic diversity of E. bieneusi in farmed Asiatic brush-tailed porcupines and bamboo rats from Hainan Province, China. Four hundred and sixty-seven fresh feces were collected from 164 Asiatic brush-tailed porcupines and 303 bamboo rats. DNA extraction from the feces and genotyping of E. bieneusi were performed by the amplification of the internal transcribed spacer (ITS) region of rDNA of E. bieneusi using PCR. A neighbor-joining tree was constructed based on the sequences obtained here and other sequences of E. bieneusi genotypes stored in Genbank. The total rate of infection with E. bieneusi was 32.5% (152/467), with 14.6% (24/164) in Asiatic brush-tailed porcupines and 42.2% (128/303) in bamboo rats infected. Seventeen genotypes of E. bieneusi were identified including 12 known genotypes, i.e., D (n = 78), Henan-III (n = 21), SHW7 (n = 19), KIN-1 (n = 11), ETMK5 (n = 7), TypeIV (n = 4), EbpD (n = 2), EbpA (n = 1), EbpC (n = 1), S7 (n = 1), HNPL-III (n = 1), HNR-VII (n = 1), and five novel genotypes named as HNZS-I (n = 1) and HNHZ-I to HNHZ-IV (n = 1 per genotype). Phylogenetic analysis revealed that all the genotypes found here except genotype S7 fell into Group 1. The present study demonstrated a relatively high prevalence of E. bieneusi infection (32.5%) and a large genetic variation of E. bieneusi (seventeen genotypes) in farmed Asiatic brush-tailed porcupines and bamboo rats in Hainan, China. The high proportion (78.3%) of zoonotic genotypes identified in the animals investigated here suggests that there is the potential for zoonotic or cross-species transmission which may pose a serious public health threat in the area. Public education on the management of Asiatic brush-tailed porcupines and bamboo rats should be implemented in the investigated areas.
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