Unformatted text preview: low Ne should be seen New Male Wolf Arrives
His offspring 100 12
1983 1991 Number of breeding packs Estimated population size •A single immigrant wolf arrives in 1991...
•What are the consequences? Population a single breeding pack Split into > 1 breeding pack 2001
25 Vila et al. 2003 Proc Roy Soc B 270: 91 97 26
Vila et al. 2003,Proc Roy Soc B 270: 91 97 Before: Heterozygosity was
decreasing because related
i ndividuals were mating,
p romoting homozygosity Introducing the male STOPS
t he decline of
h eterozygosity! A single individual can eliminate inbreeding
“We show here that the genetic diversity of
the severely bottlenecked and geographically
isolated Scandinavian population of grey wolves
(Canis lupus), founded by only two individuals … was recovered by the arrival of a single
immigrant.” Immigrated to Isle Royale
in Lake Superior, on his own 27
Vila et al. 2003,Proc Roy Soc B 270: 91 97 Adams J R et al. Proc. R. Soc. B 2011. 278:3336-3344 28 -ONE introduced individual has the power to allow the
p opulation to recover from the extreme bottleneck Adams J R et al. Proc. R. Soc. B 2011;278:3336-3344 Are these effects sustainable?
• Wolves, chickens, adders, panthers all face substan...
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- Winter '14
- Population Genetics, Annotated Lecture S, population size