Conservation and genetic improvement activities require measures of effective size in order to maintain and control the evolutive potential of the populations under manipulation. Natural populations are sometimes structured and thus levels of endogamy and relatedness can exist. The aim of this work is to describe an estimator for the inbreeding effective population size of monoecious species populations with any level of endogamy and relatedness. The estimator was derived assuming that endogamy is the same in all individuals of the population. This can be used in populations with known pedigree or the average of the relatedness between pairwise individuals of target populations can be estimated by codominant genetic markers. An example is given in which the estimator is applied to a natural population of a monoecious tree species, Euterpe edulis.
Tree species; coancestry; relatedness; population genetic
