Leading particle production in light flavour jets                              
  
The energy distribution and type of particle with the highest momentum in      
quark jets are determined for each of the five quark flavours, with            
minimal model assumptions.  The analysis is based on hadronic Z0 decays        
in the OPAL detector at LEP. We use our results                                
to study the hadronisation mechanism in light flavour jets and compare         
the data                                                                       
to the QCD models JETSET and HERWIG.  Within the JETSET model we also          
directly                                                                       
determine the suppression of strange quarks to be 0.422 +- 0.049 +-            
0.059                                                                          
by comparing the production of charged and neutral kaons in strange and        
non-strange light quark events.  Finally we study the features of baryon       
production.                                                                    
  
 Parallel session :3                   
 Plenary  session :11