ABSTRACT
The differentiation between Neolissochilus and Acrossocheilus species based only on morphology is ambiguous; however, phylogenetic analysis using their mitogenome sequences provides conclusive results. Here, the phylogenetic position of Neolissochilus hendersoni (Herre, 1940) was determined using its mitogenome data. Total DNA from N. hendersoni was sequenced using the Illumina NovaSeq6000 platform, and annotation of mitochondrial genes was performed using MITOS2. Phylogenetic trees were constructed using the complete mitogenomes of 16 fish species. The mitogenome of N. hendersoni was found to be 16584 bp long, containing two ribosomal RNA genes, 13 protein-coding genes, 22 transfer RNA genes, and three non-coding control regions. The genome showed a slight A + T bias (A + T = 56.46%). Most PCGs were found to be located on the L-strand. Results of the phylogenetic analysis showed that N. stracheyi is closely related to N. hendersoni. Our results will help to clarify the phylogenetic relationship between Neolissochilus and Acrossocheilus species.
ABSTRACT
In this paper, we first report the complete mitochondrial genome of Neolissochilus soroides. The main purpose of this study was to determine the mitochondrial genome and phylogenetic status of N. soroides. The length mitogenome was 16584 bp, containing 2 ribosomal RNA genes, 13 protein-coding genes, 22 transfer RNA genes, and 3 non-coding control regions. The genome showed a slight A + T bias (A + T = 56.47%). 12 genes (ND1, COX2, ATP6, ND4L, ND5, ND6, ND2, ATP8, ND3, ND4, Cytb, COX3) start with ATG codon, besides one gene (COX1) start with GTG codon. Six genes (ND1, COX1, ATP6, ND4L, ND5, ND6) end with a TAA codon, 3 genes (ND2, ATP8, ND3) end with a TAG codon, and four genes (COX2, ND4, Cytb, COX3) end with the TA or T codon. The phylogenetic analysis showed that N. soroides was closely related to N. hendersoni. The mitogenome could have important implications for phylogeny, population genetics, and conservation of the N. soroides.
ABSTRACT
In this study, we determined the complete mitochondrial genome of Neolissochilus heterostomus. The genome is 16,585 bp in length, including 2 ribosomal RNA genes, 13 proteins-coding genes, 22 transfer RNA genes, and two non-coding control regions. Sequence analysis showed that the overall base composition of N. heterostomus is T 24.8%, C 27.7%, A 31.7%, and G 15.8%. The sequence is a slight A + T bias of 56.5%, which is similar to other fishes. We describe a phylogenetic analysis of 16 species of Cypriniformes based on the complete mitochondrial genome, and the result showed that N. stracheyi is most closely related to N. heterostomus. This mitogenome sequence data would play an important role in the investigation of phylogenetic relationship of the Cyprinidae.
