Gene flow from rhesus (Macaca mulatta) to cynomolgus macaques (M. fascicularis) and effects of introgressive hybridization on reproduction in two biomedically relevant non-human primate species

Prangmas Kumpai, Yuzuru Hamada, Sree Kanthaswamy, Suchinda Malaivijitnond

Research output: Contribution to journalArticlepeer-review

Abstract

Background: We compared the reproductive patterns of wild Indochinese and Sundaic cynomolgus macaques (Mf) exhibiting different levels of genetic admixture with rhesus macaques (Mm). Methods: Ten adult females from each Indochinese (WHM) and Sundaic (KN/KTK) Mf populations, which exhibited 50% and 15% of Mm autosomal SNPs, were selected as focal animals. Animals were observed for 12 months, and the frequencies of sexual proceptivity, attractivity and receptivity, number of newborns, and changes in sex skin were recorded. Results: Both populations showed all three sexual behaviors throughout the year, but they were classified as moderately seasonal breeders because their 3-month birth counts were as high as ~50%. The fecundity of WHM was lower than the KN/KTK. Changes in sex skin of WHM were more prone to Mm's pattern than the KN/KTK. Conclusion: The introgressive gene flow from Mm to Mf does not affect Mf's sexual behaviors; however, it can impact fecundity and physiological (sex skin) changes.

Original languageEnglish (US)
Pages (from-to)108-118
Number of pages11
JournalJournal of Medical Primatology
Volume51
Issue number2
DOIs
StatePublished - Apr 2022

Keywords

  • fecundity
  • reproductive patterns
  • seasonal breeder
  • sex skin
  • sexual behaviors

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

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