Identification of mitogenomes using bait sequences
The PCR-based baits comprised 261 sequences (109 cox1, 8 cox2, 54 cytB and 90 rrnL).
The complete dataset of assembled contigs from each library was used as a query in a BLAST search against each bait gene reference library. The total number of
matching baits to the query was 131 of which 107 assemblies showed a match with a single bait and 24 with multiple baits.
All matches were to the species in the expected library. One contig matched two baits (cytB and rrnL) of two different species.
Inspection of the sequences showed that the chromatogram of the cytB region was of poor quality. The contig was removed because we could not exclude a chimeric contig with certainty.
Only one other contig matched two different species for regions cytB and cox1, due
to a curious match of the cox1 bait to a secondary genome region indicating a gene rearrangement in the assembly.
This complete contig was also removed. In total, 74% of all bait sequences of
cox1 regions resulted in a match to a contig, 62% of cox2, 65% of cytB, while rrnL produced an unequivocal match in only 39% of cases, as incomplete contigs were missing these genes predominantly.