DNA EXTRACTION
Quantification of DNA extracts indicated wide variation
in the sample concentration ranging from
59 ng lL1 for R. shameli down to 0.4 ng lL1 for
R. imaizumi (Table 1). Similarly, DNA samples ranged
in levels of degradation, with most samples
showing a standardized fragment distribution consisting
almost entirely of very long fragments, resulting
in a high DNA integrity number (DIN > 8). Only
R. bocharicus and R. imaizumi (which were not
sheared) appeared to display a greater distribution
of short fragments (< 14 500 bp). Rhinolophus
bocharicus (the oldest sample) appeared to only
have, almost exclusively, fragments < 1500 bp in
length, with most clustering around the 200–400 bp
length. Rhinolophus imaizumi showed a wider distribution
of lengths, perhaps as a result of the shorter
length of time allowed for DNA to fragment, with a
slope falling off steadily from a peak of fragments
around 200 bp (see Supporting information, Fig. S1).