Chromosome homology between the domestic pig and the babirusa (family Suidae) elucidated with the use of porcine painting probes

Abstract

Homology among three pairs of domestic pig (Sus scrofa) and five pairs of babirusa (Babyrousa babyrussa) autosomes has been demonstrated with the use of porcine painting probes. With the results of this study, in addition to data obtained earlier through the application of banding techniques, correspondence between all individual chromosomes of these two distantly related pigs has been identified.

Different Fusion Configurations of Evolutionarily Conserved Segments in Karyotypes of <i>Potamochoerus porcus</i> and <i>Phacochoerus africanus</i>

“…The same inversion of SSC1p as in PPO14 can also be seen in the karyotype of B. babyrussa [Bosma et al, 1996;Thomsen et al, 1996]. The centric fusion SSC15/17 has been ascertained in B. babyrussa [Bosma et al, 1996;Thomsen et al, 1996], Phacochoerus aethiopicus [Bosma, 1978] and as polymorphic character in wild pig S. scrofa [Bosma, 1976].…”

“…However, there is a difference in fusion configuration among these chromosomes. While SSC13 and 16 are tandemly fused in acrocentric PPO13, the homologous submetacentric chromosomes in B. babyrussa [Bosma et al, 1996], P. aethiopicus [Bosma, 1978], P. africanus [this article] and S. cebifrons [O'Brien et al, 2006] originated from centric fusion of these chromosomes. In other words, PPO13 differs from homologous chromosomes in other Suidae by a pericentric inversion of the chromosomal segment equivalent to SSC16.…”

“…Cross-species chromosome painting was used only in comparative studies of babirusa chromosomes [Bosma et al, 1996;Thomsen et al, 1996]. The pig whole chromosome painting probes provided evidence that pig chromosomes 3 and 6 each originated from fusions of 2 ancestral chromosomes which are still present in the babirusa karyotype.…”

Localization of the 18S, 5.8S and 28S rRNA genes and the 5S rRNA genes in the babirusa and the white-lipped peccary

“…The pres ence of 18S+28S rRNA genes on babirusa chromosome 6 is unexpected. This chromosome cannot directly be matched to a specific domestic pig chromosome on the basis of banding pat terns, but recently it has been demonstrated that chromosomes 6 and 14 of the babirusa are together equivalent to chromo some 6 of the domestic pig (Thomsen et al, 1996;Bosma et al, 1996). Chromosome 6 of the domestic pig, however, does not contain 18S+28S rDNA.…”

Genetic variability among the wild boars (Sus scrofa scrofa), crossbred animals and pigs using microsatellite markers (STRs)

“…Originating from Northern Africa and Southeast Asia, wild boars are mammals of Artiodactyla order, Suidae family, represented by five genres, including the Sus (Bosma et al, 1996). The need to increase the productivity at wild boar farms has led to crossings between the wild boars and pigs.…”