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Publicación Acceso abierto Comparación y utilidad de las regiones mitocondriales de los genes 16S y COX1 para los análisis genéticos en garrapatas (Acari: Ixodidae).(Bogotá, Colombia : Revista biomédica, 2016., 2019-10-01) Paternina, Luis Enrique; Verbel Vergara, Daniel; Bejarano, Eduar ElíasIn recent decades the analysis of mitochondrial genes has been used for population and phylogenetic studies of ticks allowing many advances in their systematics. Mitochondrial ribosomal 16S (16S) subunit is one of the most frequently used among those genes available for tick analysis, whereas cytochrome oxidase gene 1 (COX1) has recently been used and proposed as an alternative to the traditional 16S gene marker. The main objective of the present investigation is To evaluate the usefulness of 16S and COX1 in genetic studies of ticks by analyzing sequences of three species commonly found in the Caribbean region of Colombia.Publicación Acceso abierto Descripción del ARN de transferencia mitocondrial para Serina (UCN) de Lutzomyia columbiana (Diptera, Psychodidae).(Curitiba , Brasil: Revista Brasileira de Entomología, 2008., 2019-10-16) Pérez Doria, Alveiro; Bejarano, Eduar Elías; Vélez, Iván Darío; Sociedade Brasileira de Entomología.Description of the mitochondrial serine transfer RNA (UCN) of Lutzomyia columbiana (Diptera, Psychodidae). The sand fly Lutzomyia columbiana is considered a suspected vector of Leishmania mexicana and Leishmania braziliensis in Colombia. Lu. columbiana belongs to the Lutzomyia verrucarum species group, which included some sibling species. This has motivated the search for molecular markers to distinguish these taxa. In this paper, we described for the first time the putative secondary structure of the mitochondrial serine transfer RNA that recognizes the codon UCN of Lu. columbiana (tRNASer). DNA was extracted, amplified and sequenced from six individuals collected in human biting activity. The secondary structure of the tRNASer was inferred using the program tRNAscan-SE 1.21. The tRNASer gene length was 67 pair of bases (pb), and a single haplotype was detected among the six specimens sequenced. In the inferred secondary structure of the tRNASer of Lu. columbiana, the acceptor arm consisted of 7 bp, the dihydrouridine (DHU) arm of 3 pb, the anticodon arm of 5 pb, and the ribothymidine-pseudouridine-cytosine (TøC) arm of 5 pb. Similarity, the estimated size of the loops was 5 nucleotides in the DHU, 7 in the anticodon, 4 in the variable, and 7 in the TøC. Lu. columbiana differs from other Lutzomyia and Phlebotomus species sequenced to date by the presence of guanine in the nucleotide position 64, which induce a non-canonical base pair conformation type uracil-guanine in the acceptor arm. More studies are necessary to confirm the usefulness of the tRNASer as a suitable molecular tool for sand fly species identification.