For target sequence capture, DNA was first
sheared to give a standardized fragment size using a
Covaris Sample Preparation System, and then quantified
using a High-Sensitivity Bioanalyzer assay
(Agilent). Two samples (R. bocharicus and
R. imaizumi) (Table 1) were not sheared as a result
of low concentrations. Libraries were prepared from
the whole sheared DNA for bait capture using the
NEB Next Ultra DNA Library Prep kit (New England
Biosciences). Illumina adaptors were attached
to the sheared DNA, followed by amplification of the
libraries prior to bait capture. We performed a polymerase
chain reaction with the universal primers,
P1 and P2 (Agilent), using the thermocycler conditions
in accordance with the manufacturer’s instructions.