Schizopygopsis younghusbandi cytb seqs

Geological
environment changes in Yigong Zangbo River Basin seriously threatened to Schizopygopsis younghusbandi habitat. In this study, mitochondrial DNA cytochrome
b (cytb) gene sequences were used to
evaluate the genetic diversity and population structure of S. younghusbandi from
three sites in the Yigong Zangbo River Basin, which showed slightly higher Hd values (0.723) and low π values (0.00083) among these
populations. A total of 27 polymorphic sites were detected, revealing11
haplotypes. Analysis of molecular variance (AMOVA) revealed that most genetic
divergence occurred within populations (65.38%), and significant geographically
structure for the S. younghusbandi populations. The pairwise
fixation index (FST) value
showed a certain degree difference of differentiation between groups and the
phylogenetic tree analysis showed that the S.
younghusbandi from different
populations were mixed, which suggested that this species might have undergone
a population expansion between among populations. This research has provided
detailed information for S. younghusbandi
germplasm resource conservation and utilization after habitat distributions.