Routine DNA analysis based on 12S rRNA gene sequencing as a tool in the management of captive primates

Area of Science:

• Genetics
• Zoology
• Molecular Biology

Background:

• Accurate species identification is crucial in zoology and conservation.
• Classical taxonomy can be challenging for closely related species or individuals with ambiguous morphology.
• Mitochondrial DNA sequencing offers a molecular approach for species determination.

Purpose of the Study:

• To evaluate the efficacy of automated DNA sequencing of the mitochondrial 12S rRNA gene for primate species identification.
• To compare the accuracy of this molecular method against classical taxonomic identification.
• To assess the utility of phylogenetic analysis for species estimation in ambiguous cases, particularly within Cercopithecus species.

Main Methods:

• DNA extraction from blood samples of 53 Old World monkeys.
• Amplification of a ~390 nucleotide fragment of the mitochondrial 12S rRNA gene using polymerase chain reaction (PCR).
• Direct sequencing of PCR products and comparison with a reference database of primate 12S sequences.
• Application of phylogenetic methods for species estimation when direct matches were not found.

Main Results:

• Automated DNA sequencing successfully identified many individuals by matching their 12S rRNA gene sequences to reference data.
• Phylogenetic analyses provided valuable species estimations, proving especially informative for distinguishing within the Cercopithecus genus.
• The molecular method demonstrated potential as a complementary tool to classical taxonomy.

Conclusions:

• Automated DNA sequencing of the mitochondrial 12S rRNA gene is a viable method for primate species identification.
• This genetic approach can complement or refine species determination, particularly in challenging groups like Cercopithecus.
• The study highlights the utility of molecular data in zoological classification and conservation efforts.