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ACI Avances en Ciencias e Ingenierías

SECTION B: LIFE SCIENCES

Vol. 2 No. 2 (2010)

Preliminary assessment of the genetic diversity of pygmy marmoset <em>Callithrixpygmaea</em> (Primates: Cebidae: Callithrichinae) using microsatellite (SSR: Short Sequence Repeat)

DOI
https://doi.org/10.18272/aci.v2i2.26
Submitted
July 2, 2015
Published
2010-06-01

Abstract

The pygmy marmoset (Callithrix pygmaea) is one of the most specialized Ecuadorian pri­mate species. Its high specialization in habitat and diet, and the increase of human activities in the Amazon region may cause pygmy marmosets to go through population bottle necks, losing genetic diversity. To estimate the magnitude of this threat, since 2008 we carried out a pilot study for evaluating the genetic diversity of four wild groups of this species in a population located on the margins of the Aguarico river. For the genetic analyses we used 50 fecal samples collected from September 2008 to February 2009; 50% of the samples belonged to group P4, groups P1, P2 and P5 provided the remaining 50%. We extracted DNA from the feces using the QLAamp DNA Stool Mini Kit (QIAGEN). With PCR we amplified 9 microsatellite primers reported for a related species of Callitrichinae. DNA bands were visualized in polyacrylamide (6 %) and urea (5M) gels. Statistical analyses we­re carried out with GenAlEx 6 software. Three to eight alleles were found per locus. The Hardy-Weinberg equilibrium test suggested that inbreeding may be occurring in group P4. Expected heterocigocity in groups P1 and P2 is 0.5, while in group P4 ranges from 05. to 0.836. Nei"™s genetic distance between groups P1 and P2 is 1.211, whereas group P4 differs 0.612 and 0.485 from groups P2 and P1, respectively. This is the first study of this type for this species in Ecuador and elsewhere, the results point out the need to evaluate human impact on the genetic diversity of Ecuadorian species.

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References

  1. de laTorre, S. 2000. "Primates de la amazonia ecuatoriana." Proyecto Petramaz/SIMBIOE. Quito.
  2. de laTorre, S., Yépez, P., and Snowdon, C. 2009. "Conservation status of Pygmy Marmosets Callithrix (Ce-buella) pygmaea in Ecuador", The smallest anthropoids: The Marmoset/Callimico radiation.
  3. Yépez, P., de laTorre, S., and Snowdon, C. 2005. "Interpopulation differences in exudate feeding of pygmy marmosets in ecuadorian Amazonia". American Journal ofPrimatology. 145-158.
  4. Nievergelt, C., Mundy, N., and Woodruff, D. 1998. "Microsatellite primers for genotyping common marmoset (Callithrix jacchus) and other callitrichids". Molecular Ecology.
  5. Benbouza, H., Jacquemin, J., and Baudoin, J. 2006. "Optimization of a reliable, fast, cheap and sensitive silver staining method to detect SSR markers in polyacrylamide gels", Vol. 10, No. 2.
  6. Chu, J., Lin, Y., and Wu, H. 2006. "Applicability of noninvasive sampling in population genetic study of taiwanese macaques (Macaca cyclopis)". Taiwania. 51, 258265.
  7. Clisson, M., Lathuilliere, M., and Crouau-Roy, B. 2000. "Conservation and evolution of microsatellite loci in primate taxa". American Journal of Primatology. 50, 205214.
  8. Muniz, L. and Vigilant, L. 2008. "Isolation and characterization of microsatellite markers in the white-faced capuchin monkey (Cebus capucinus) and cross-species amplification in other new world monkeys". Molecular Ecology Resources. 402-405.
  9. Nievergelt, C., Digby, L., Ramakrishnan, U., and Woodruff, D. 2000. "Genetic analysis of group composition and breeding system in a wild common marmoset (Ca-llithrix jacchus) population". International Journal of Primatology. 21, 1-20
  10. Frankham, R., Ballou, J., and Briscoe, D. 2003. Introduction to conservation genetics. Cambridge University Press: United Kingdom.
  11. de laTorre, S., Yépez, P., Snowdon, C., and Payaguaje, A. 2005. "Ecología, comportamiento y conservación del leoncillo Callithrix (cebuella) pygmaea en Tierras Secoya". En: Caminando en el sendero, hacia la conservación del ambiente y la cultura Secoya. S. de la Torre y P. Yépez. Fundación VIHOMA. Quito.

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