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  • Title: Mitochondrial genomes of Heterakis gallinae and Heterakis beramporia support that they belong to the infraorder Ascaridomorpha.
    Author: Wang BJ, Gu XB, Yang GY, Wang T, Lai WM, Zhong ZJ, Liu GH.
    Journal: Infect Genet Evol; 2016 Jun; 40():228-235. PubMed ID: 26980606.
    Abstract:
    Heterakis gallinae and Heterakis beramporia are the most prevalent nematode infecting native chicken breed, causing major economic losses. In the present study, the complete mitochondrial genomes (mt) of H. gallinae and H. beramporia were amplified by long-PCR and then sequenced. The complete mt genomes of H. gallinae and H. beramporia were 13,973bp and 14,012bp in size, respectively. Both mt genomes contain 12 protein-coding genes, 22 transfer RNA genes and 2 ribosomal RNA genes. All genes are transcribed in the same direction and the gene arrangement is identical to Ascaridia spp. Phylogenetic analysis based on the 12 protein-coding genes revealed that the family Heterakidae (represented by H. gallinae and H. beramporia) was more closely related to the infraorder Ascaridomorpha than it was to the infraorder Oxyuridomorpha. The present study determined the complete mt genome sequences for two Heterakis species, providing useful markers for studying the systematics, population genetics, and molecular epidemiology of these Heterakis parasites.
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