, Volume 42, Issue 1, pp 1–14 | Cite as

A ten-year summary of reproductive parameters for ring-tailed lemurs at berenty, madagascar

  • Naoki Koyama
  • Masayuki Nakamichi
  • Ryo Oda
  • Naomi Miyamoto
  • Shinichiro Ichino
  • Yukio Takahata


From 1989 to 1998, 204 live births were recorded for ring-tailed lemurs (Lemur catta) at Berenty, Madagascar. Excluding unknown birth dates, the peak month of birth was September, with 82.0% (146/178) occurring during this period. The offspring sex ratio (1∶1.19) was not significantly different from 1∶1, and there was no association with the mother's age. The first births occurred at the ages of 2 to 4 yr. The annual birth rate was very low at the age of 2 yr (11.1%), but increased thereafter: to 50.0% at the age of 3 yr, and to 75–85% at the age of 4 or more years. Multiple births were very rare, since only three sets of twins and one set of triplets were recorded. As for the interbirth interval, a one-year interval was the most common (92.2%). Infant mortality within the first year was 37.7% (77/204). Neonatal mortality within the first month accounted for 31.2% of all infant dealths.

Key Words

Ring-tailed lemurs Season of births Age-specific fecundity Interbirth intervals Infant mortality 


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Copyright information

© Japan Monkey Centre 2001

Authors and Affiliations

  • Naoki Koyama
    • 1
  • Masayuki Nakamichi
    • 2
  • Ryo Oda
    • 3
  • Naomi Miyamoto
    • 1
  • Shinichiro Ichino
    • 1
  • Yukio Takahata
    • 4
  1. 1.The Center for African Area StudiesKyoto UniversityKyotoJapan
  2. 2.Laboratory of Ethological Studies, Faculty of Human SciencesOsaka UniversityOsakaJapan
  3. 3.Nagoya Institute of TechnologyNagoyaJapan
  4. 4.Kwansei-Gakuin UniversitySanda, HyogoJapan

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