Effective Population Size - Inbreeding Effective Size

Inbreeding Effective Size

Alternatively, the effective population size may be defined by noting how the average inbreeding coefficient changes from one generation to the next, and then defining Ne as the size of the idealized population that has the same change in average inbreeding coefficient as the population under consideration. The presentation follows Kempthorne (1957).

For the idealized population, the inbreeding coefficients follow the recurrence equation

Using Panmictic Index (1 − F) instead of inbreeding coefficient, we get the approximate recurrence equation

The difference per generation is

The inbreeding effective size can be found by solving

This is

although researchers rarely use this equation directly.

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