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human induced mortality
– Hunting, fragmentation, vehicle impacts
declined • Introduction/translocation can have short term benefits
Relatedness now rising! “ The immigrant's fitness so exceeded that of native wolves that – Will a self sustaining population require ongoing
translocations or immigration events? • Let’s think: within 2.5 generations, he was related to every
individual in the population ... In other words, all the male
ancestry (50% of the total ancestry) descended from this immigrant,
plus 6 per cent owing to the success of some of his inbred offspring. ”
29 At first, inbreeding was rapidly increasing -> Then the individual wolf was
i ntroduced and it decreased -> THEN… it began to RISE again within 2.5
-All new individuals were descendants of the new male wolf, therefore
t hey began to mate together resulting in rising inbreeding for a second
t ime (red arrow) – If 1 individual can have such strong reproductive success…
…eventually most of the population descends from him/her…
…won’t inbreeding eventually re occur as his/her descendents
mate with each other?
30 5 13/03/2013 Return to Scandinavian wolves… Genetic rescue as a time buying strategy • Inbreeding has returned as the single immigrant’s
descendents subsequently inter bred
• The more inbred, the lower their fitness...
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- Winter '14
- Annotated Lecture S