Abstract
Analysis of the frequencies of chromosomes carrying various classes of porcine endogenous retroviruses (PERVs) and combinations of these classes was performed in the swine species Sus scrofa L. by using maps constructed in two principal component coordinates. Four population clusters can be recognized in the maps. Cluster 1 is formed by wild boars,cluster 2 by domestic meat breeds, cluster 3 by meat-and-lard (universal) breeds, and cluster 4 by miniature pigs. The maps indicate that modern domesticated swine meat breeds are the closest to the wild type. Meat-and-lard domestic swine breeds are more distant from wild boars, and miniature pigs are diverged the most. The maps showed that microevolution processes associated with PERV carriership frequency had two basic dimensions, or vectors: the vector of fat deposition variation and the “minus” selection vector (determination of commercial traits). Thus, PERVs may cause variation in pig physiology.
Highlights
Porcine endogenous retroviruses (PERVs) became an integral part of swine genomes, including Sus scrofa L. 1758 (Suidae, Mammalia), before the formation of theSus genus
Maps in two principal component coordinates constructed on the base of models M-1 and M-2 demonstrate features of the phylogenetic relationship between populations determined by microevolutionary processes (Figure 1)
It should be emphasized that model M-1, which considers the frequencies of chromosomes carrying certain PERV classes, and model M-2 that deals with the frequencies of chromosomes carrying combinations of these classes, yield different results (Figure 1)
Summary
Porcine endogenous retroviruses (PERVs) became an integral part of swine genomes, including Sus scrofa L. 1758 (Suidae, Mammalia), before the formation of theSus genus. Viral genomes were analyzed in the following breeds: Westran [8,9], Duroc, Landrace, Yorkshire, Berkshire, and their hybrids [10,11]; Chinese breeds Banna miniature pig, Wu-ZhiShan, Nei Jiang [12], and Meishan [11]; and west European wild boars [9]. In these breeds, as in Large White pigs, PERV sequences are dispersed throughout the genome.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
