Characterization and phylogenetic position of two sympatric sister species of toxic flatworms Planocera multitentaculata and Planocera reticulata (Platyhelminthes: Acotylea)

Abstract

The complete mitochondrial genomes of two toxic flatworm species of the genus Planocera were determined. The total length of mitochondrial DNA (mtDNA) was 15,657 bp in Planocera multitentaculata and 15,486 bp in Planocera reticulata and included 12 protein-coding genes, 2 ribosomal RNA (rRNA) genes, 22 transfer RNA (tRNA) genes, and 4 non-coding regions. The mitochondrial gene arrangement of these planocerid species was identical to that of previously described acotylean species, Hoploplana elisabelloi, and also to those of other polyclads. Maximum likelihood analysis against 14 Platyhelminthes showed that a tree was robustly constructed using 12 protein-coding genes than COI gene.

Keywords:

• Invertebrate
• toxic flatworm
• Polycladida
• Planocerid

Disclosure statement

No potential conflict of interest was reported by the author(s).

Notes

1 Table S1 is available on at FigShare: DOI 10.6084/m9.figshare.11709648.

Additional information

Funding

This study was supported in part by Grant-in-Aid for Challenging Research (Exploratory) from Japan Society for the Promotion of Science (JSPS) [18K19238, S.I.] and Grant-in-Aid for Scientific Research (A) from JSPS [19H00954, S.I.; S.A.].