Mitochondrial markers ( and ) as supporting biomarkers for wild bird identification.

BACKGROUND AND AIM

Illegal wildlife trafficking is a critical threat to biodiversity, particularly in megadiverse countries such as Colombia. Birds, notably psittacines, are among the most targeted taxa. Morphological identification is often insufficient, especially when dealing with cryptic species or degraded samples. This study aimed to assess the utility of mitochondrial markers () and () as molecular tools for species-level identification of psittacines housed at the Conservation Park of Medellín.

MATERIALS AND METHODS

Six adult psittacines from the genera and were selected based on availability. Blood samples were collected and genomic DNA was extracted using a commercial kit. Polymerase chain reaction amplification of partial and gene fragments was performed, followed by Sanger sequencing. Sequence identity was confirmed using BLASTn and the Barcode of Life Data System (BOLD). Phylogenetic relationships were analyzed using Neighbor-Joining, Maximum Likelihood, and Bayesian Inference approaches.

RESULTS

Molecular results showed 100% concordance with prior morphological identification for all six individuals. and sequences allowed clear species-level identification with similarity values >98%. Phylogenetic analyses for both markers yielded congruent tree topologies, with high branch support (>90%), further validating species identification. Maximum interspecific divergence for was observed between and (0.15980), while showed lower divergence values. All generated sequences were submitted to GenBank and BOLD in accordance with findable, accessible, interoperable, reusable principles.

CONCLUSION

This study confirms the robustness of and mitochondrial markers in accurately identifying psittacine species. The integration of molecular and morphological approaches enhances forensic investigations, facilitates biodiversity conservation, and contributes to efforts against wildlife trafficking. Expanding genetic databases for Neotropical avifauna, especially for commonly trafficked species, is imperative. Future research should adopt integrative genomic approaches involving nuclear markers to overcome the maternal inheritance limitation of mitochondrial DNA.