title: Semen characteristics of captive common marmoset (Callithrix jacchus): a comparison of a German with a Brazilian colony.
abstract: BACKGROUND
  The common marmoset (Callithrix jacchus) is of interest for reproductive studies because of their high and variable fertility in captivity. However, to understand this variability, much basic information still needs to be gathered. This study is the first to characterize marmoset semen comparing a German and a Brazilian colony.
  
  
  METHODS
  All animals were weighted, and semen samples were collected by penile vibratory stimulation and analyzed according to standard criteria.
  
  
  CONCLUSIONS
  The German animals had a higher mean and maximum weight than the Brazilian. Further, sperm concentration tended to be higher with heavier animals in the German population, but not in the Brazilian. Additionally, major defects tended to be more frequent with higher weight but also only in German sample. In spite of these differences, the total range and variability in sperm concentration were similar in both populations, suggesting that this is characteristic for the species.
authors.affiliation: Institute of Health Sciences, Paulista University, São Paulo, Brazil; Applied Research Division, São Paulo Zoological Park Foundation, São Paulo, Brazil; Wildlife Management Consultoria Veterinária, São Paulo, Brazil.
authors.forename: Rodrigo del Rio do
authors.initials: Rdel R
authors.lastname: Valle
authors.forename: Cristiane Macedo del Rio do
authors.initials: CM
authors.lastname: Valle
authors.forename: Marcilio
authors.initials: M
authors.lastname: Nichi
authors.forename: José Augusto Pereira Carneiro
authors.initials: JA
authors.lastname: Muniz
authors.forename: Penelope Lea
authors.initials: PL
authors.lastname: Nayudu
authors.forename: Marcelo Alcindo de Barros Vaz
authors.initials: MA
authors.lastname: Guimarães
mesh_terms: D000818:Animals; D001938:Brazil; D002144:Callithrix; D005858:Germany; D008297:Male; D012661:Semen / Q000737:chemistry / Q000166:cytology*; D013081:Sperm Motility; D013094:Spermatozoa / Q000166:cytology / Q000502:physiology
keywords: PVS; acrosome; plasma membrane; primate; sperm; vibrostimulation