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Abstract
The first complete mitochondrial (mt) genome of Ancyrocephalidae is reported herein. The mt genome of Tetrancistrum nebulosi was 13,392 bp in length containing 12 protein-coding genes (lacking atp8), 22 tRNA genes and 2 rRNA genes. The longest non-coding region was located between nad5 and trnG, and the A + T content was 72.4%. All tRNAs had the typical clover-leaf secondary structure except for trnS1(AGN), trnR, trnF and trnQ. The rrnL and rrnS subunits were separated by trnC, as documented in the monopisthocotylean groups (Benedenia and Gyrodactylus species), while they were adjacent to each other in the polyopisthocotylean species (Microcotyle sebastis, Polylabris halichoeres and Pseudochauhanea macrorchis).
Declaration of interest
The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper. This work was financially supported by the Natural Science Foundation of Guangdong Province (grant No. S2012040007679) and the National Science & Technology Pillar Program (grant No. 2012BAD17B00).