Cheetah bottleneck

Louis van de Zande L.P.W.G.M.van.de.Zande at biol.RUG.NL
Fri Mar 15 03:33:41 EST 1996


So the cheetah has roused some heavy discussion again. And why? Just 
because people assume that bottlenecks and resulting low genetic 
variation makes populations vulnerable and leads to extinction. This 
may be right but where, and I mean natural populations, is the 
evidence for such a assumption? 
Anyway, Menotti-Raymond and O'Brien (PNAS 90,3172-3176, 1993) assumed 
that variation at ALL minisatellite loci (=fingerprints) was lost due 
to bottleneck(s). This would imply almost complete homozygosity. 
By the way, some beavers in sweden are doing very well, despite of 
very low levels of genetic variation (Ellegren et al. PNAS 90, 8150-
8153, 1993). 

L. van de Zande
Dept Genetics
Univ. Groningen
Netherlands
 






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