  We point out that the fragmentation of a strange quark into nucleons versus
antinucleons is not necessarily identical $D_{p/s}(z,Q^2) \neq D_{\bar
p/s}(z,Q^2)$, even though the perturbative contributions from gluon splitting
and evolution are $p \leftrightarrow \bar p$ symmetric. The observation of such
asymmetries in the hadronization of strange and other heavy quarks can provide
insight into the nonperturbative mechanisms underlying jet fragmentation in
QCD.
