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Gestation length in Tarsius bancanus.

M Kay Izard1,2, Patricia C Wright3,2, Elwyn L Simons3,2

  • 1Department of, Anatomy, Duke University, Durham, North Carolina.

American Journal of Primatology
|January 26, 2020
PubMed
Summary
This summary is machine-generated.

The gestation period for the Sunda tarsier (Tarsius bancanus) was precisely determined to be 178 days. This finding provides the first accurate measurement, superseding previous estimates for tarsier species.

Keywords:
Tarsius bancanusgestation lengthtarsier

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Area of Science:

  • Primatology
  • Reproductive Biology
  • Zoology

Background:

  • Tarsiers are small, nocturnal primates known for their large eyes and unique adaptations.
  • Accurate data on primate reproductive cycles, including gestation length, is crucial for conservation and evolutionary studies.
  • Previous estimates for tarsier gestation were imprecise, hindering detailed biological understanding.

Purpose of the Study:

  • To accurately determine the gestation length of the Sunda tarsier (Tarsius bancanus).
  • To establish a precise reproductive baseline for Tarsius bancanus, replacing prior estimations.
  • To contribute to the understanding of primate reproductive biology.

Main Methods:

  • Determining gestation length through direct observation and evidence of conception.
  • Utilizing vaginal smears to identify the presence of whole sperm as an indicator of successful mating and the start of gestation.
  • Recording the precise day of conception confirmation to calculate the total gestation period.

Main Results:

  • A precise gestation length of 178 days was established for Tarsius bancanus.
  • This empirical value replaces the previously cited approximate gestation period of 6 months for Tarsius syrichta.
  • The use of vaginal sperm presence provides a reliable method for pinpointing the onset of gestation in tarsiers.

Conclusions:

  • The study provides the first scientifically validated gestation length for Tarsius bancanus.
  • This finding significantly advances knowledge of tarsier reproductive biology.
  • Accurate gestation data is vital for the effective conservation and management of endangered tarsier populations.