Análisis del ADN mitocondrial de dos especies de Siluriformes en Colombia

Abstract

In the present study we analyzed an ancient sample of pectoral spine of a Siluriform found in archaeological excavations in the south of the Sabana of Bogotá. Two possible species were considered, Eremophilus mutisii and Pimelodus yuma. The sample was analyzed by NGS, a total of approximately 8 million paired reads and approximately 24,000 aligned reads were obtained. Likewise, an endogenous DNA content close to 38% was calculated and by comparison with previously reported complete genomes, it is confirmed that the ancient DNA sequence is closer to the species Pimelodus yuma than to other species of the genus. It is evident that this fish was not captured locally, but it was an important part of the diet of human groups associated with the Magdalena region, therefore, it cannot be excluded that the spine was part of the items traded from that region. In future studies, this information will improve the understanding of the phylogenetic and biogeographic relationships of the species through time. In addition to supporting the analysis of the species that may be associated with the "fish trade" around the sixteenth century between the populations of the Sabana de Bogotá and the Magdalena Valley, this being a task to be advanced and discussed.