Comparative analysis of the mitogenomes of two Corydoras (Siluriformes, Loricarioidei) with nine known Corydoras, and a phylogenetic analysis of Loricarioidei

Abstract

Corydoras is a speciose catfish genus from South America with widely investigated phylogenetic and evolutionary relationships. The complete mitogenomes of C. aeneus and C. paleatus were sequenced, assembled, and annotated using next-generation sequencing. The genome arrangements, gene contents, genome structures, base compositions, evolutionary features, codon usage, and tRNA structures of the two mitogenomes were compared and analyzed with nine published mitogenomes of Corydoras. Phylogenetic analysis was performed using concatenated nucleotide sequences with 13 protein-coding genes and two rRNAs with 44 mitogenomes of Siluriformes. These results provide information on the mitogenomes of eleven Corydoras species and evolutionary relationships within the suborder Loricarioidei, which may be applicable for further phylogenetic and taxonomic studies on Siluriformes and Loricarioidei.

The complete mitochondrial genome of Pethia padamya (Actinopteri, Cyprinidae)

“…The caudal fin was collected, and total DNA was extracted using a columnar animal DNA extraction kit (Sun et al. 2022 ). Sequencing was performed using the Illumina Novaseq 6000 platform (San Diego, CA).…”

“…To analyze the relative phylogenetic position of P. padamya in the subfamily Smiliogastrinae, relevant gene sequences (17 species of Smiliogastrinae and one outgroup Corydoras aeneus MZ571336) (Sun et al. 2022 ) were downloaded from GenBank. Using the tandem sequence set of 13 PCGs and two rRNAs, MrBayes v3.2.6 (Ronquist et al.…”

First complete mitochondrial genome of the Corydoras pygmaeus (Actinopteri: Callichthyidae) and its phylogenetic implications

“…2021 ; Sun et al. 2022 ). For instance, most mouse fish gather in the middle and lower reaches, where the water flow is relatively gentle, and a few strong swift warriors live in the upper reaches of the river.…”