| Abstract: | Two species of lemur, Lemur macaco and Lemur coronatus, which do not hybridize in the wild, have produced a first, “definite” female hybrid in captivity. Its karyotype contains one haploid set from each parent. The analogy with the parental chromosomes is such that the pairing of the corresponding chromosomal arms leads to the formation of an open chain and a ring. The difficulty in obtaining hybrids between these two species could reflect the existence of a prezygotic barrier. The presence of multivalents, with probably a negative action on the gametogenesis, would introduce a postzygotic barrier. |
