Characterization of the complete mitochondrial genome of Parabreviscolex niepini Xi et al., 2018 (Cestoda, Caryophyllidea)

By

Xi, Bing-Wen
Zhang, Dong
Li, Wen-Xiang
Yang, Bao-Juan
Xie, Jun

Type

Article

Date of Publication

2018

Original Publication

ZooKeys

Volume

783

Pages

97-112

Subjects

eucestode , Mitogenome , schizothoracine fish , tapeworm , unsegmented cestode

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.783.24674

 

Abstract

Parabreviscolexniepini is a recently described caryophyllidean monozoic tapeworm from schizothoracine fish on the Tibetan Plateau. In the present study, the complete mitochondrial genome of P.niepini is determined for the first time. The mitogenome is 15,034 bp in length with an A+T content of 59.6%, and consists of 12 protein-encoding genes, 22 tRNA genes, two rRNA genes, and two non-coding regions. The secondary structure of tRNAs exhibit the conventional cloverleaf structure, except for trnS1(AGN) and trnR, which lack DHU arms. The anti-codon of trnS1(AGN) in the mitogenome of P.niepini is TCT. The two major non-coding regions, 567 bp and 1428 bp in size, are located between trnL2 and cox2, trnG and cox3, respectively. The gene order of P.niepini shows a consistent pattern with other caryophyllideans. Phylogenetic analysis based on mitogenomic data indicates that P.niepini has a close evolutionary relationship with tapeworms Breviscolexorientalis and Atractolytocestushuronensis.