title: Male reproductive timing in Rhesus macaques is influenced by the 5HTTLPR promoter polymorphism of the serotonin transporter gene.
abstract: The 5HTTLPR polymorphism in the promoter region of the human serotonin transporter (SLC6A4) gene is known to be associated with various stress-related psychological and psychiatric phenomena. We observed that a similar diallelic polymorphism in the orthologous gene of rhesus macaques (Macaca mulatta) was related to the reproductive life history of 580 males residing in the free-ranging colony of Cayo Santiago, Puerto Rico, between 1985 and 1998. At first glance, the polymorphism appeared to be selectively neutral because no difference in total reproductive output was noted between males of different 5HTTLPR genotypes. However, whereas heterozygotes were significantly more reproductive than homozygotes at intermediate age (10-13 yr), the opposite held true before and after this period (n = 682 offspring; randomization P = 0.014). This association, which explains approximately 7% of the observed variation in sire age, most likely reflects different natal dispersal patterns and represents the first reported instance of a genetic influence on reproductive timing in mammals.
authors.affiliation: Institut für Medizinische Informatik und Statistik, Christian-Albrechts-Universität, 24105 Kiel, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Krawczak
authors.forename: Andrea
authors.initials: A
authors.lastname: Trefilov
authors.forename: John
authors.initials: J
authors.lastname: Berard
authors.forename: Fred
authors.initials: F
authors.lastname: Bercovitch
authors.forename: Matthew
authors.initials: M
authors.lastname: Kessler
authors.forename: Ulrike
authors.initials: U
authors.lastname: Sauermann
authors.forename: Peter
authors.initials: P
authors.lastname: Croucher
authors.forename: Peter
authors.initials: P
authors.lastname: Nürnberg
authors.forename: Anja
authors.initials: A
authors.lastname: Widdig
authors.forename: Jörg
authors.initials: J
authors.lastname: Schmidtke
mesh_terms: D000367:Age Factors; D000818:Animals; D005260:Female; D005838:Genotype; D006579:Heterozygote; D006720:Homozygote; D008253:Macaca mulatta / Q000235:genetics* / Q000502:physiology*; D008297:Male; D008562:Membrane Glycoproteins / Q000235:genetics* / Q000502:physiology*; D026901:Membrane Transport Proteins / Q000235:genetics* / Q000502:physiology*; D009419:Nerve Tissue Proteins / Q000235:genetics* / Q000502:physiology*; D011110:Polymorphism, Genetic; D011247:Pregnancy; D012098:Reproduction / Q000235:genetics* / Q000502:physiology*; D012701:Serotonin / Q000502:physiology*; D050486:Serotonin Plasma Membrane Transport Proteins; D012741:Sexual Maturation / Q000235:genetics / Q000502:physiology; D020080:Tandem Repeat Sequences
chemical_list: D008562:Membrane Glycoproteins; D026901:Membrane Transport Proteins; D009419:Nerve Tissue Proteins; D050486:Serotonin Plasma Membrane Transport Proteins; D012701:Serotonin