in-situ conservation
protect population in natural environment
ex-situ conservation
translocate population to new area (like an island)
preserve breeding populations in captivity
genetic contributers to extinction
inpreeeding, outbreeeding depression, loss of genetic diversity, accumulation of deleterious mutations. adaptation to captivity
when is interbreeding more likely to occur
population is small, sex ratio is skewed
why does inbreeding reduce fitness
could both inherited same allele so rate of homozygosity is much hihgher, most alleles are for diseased are rare, so having a kid increases that risk of disease
outbreeding depression
parent from a different population can be less well adapted to an environment
natural and artificial selection
organism adapts to captive environment, reduces fitness to natural environment
directed artificial selection
intentional selection for traits desirable for handling, breeding
unconscious artificial selection
unintentional selection for desirable trails
incidental artificial selection
caused by preperties of the captive environment like abundant water, lack of predators
how would you prevent adaptation to captivity
keep conditions similar to natural environment, minimise number of generations, minimise selection, fragment populations, immigration