accurately identify the source of fertility problems that occur within commercial hatcheries. In this
study, female broodstock were artificially inseminated with spermatophores from two different males as a
novel method of discriminating the embryo development influence between paired males. Fertilized embryos
and newly hatched nauplii from 15 spawnings were collected and the proportion from each of the paired
males was estimated using genotyping of the individual embryos and nauplii