Complete mitochondrial genome sequence of neotropical fish Astyanax giton Eigenmann 1908 (Ostariophysi; Characidae)

Abstract

Here we report, for the first time, the complete mitochondrial genome of Astyanax giton which, together with other species, are popularly known as tetras. The mitogenome’s length is 16,643 bp, containing 13 protein-encoding genes (CDS), two ribosomal RNAs (rRNA), 22 RNA transfer (tRNA) and one control region (D-loop). As for other vertebrates, all genes are encoded on the heavy strand except for ND6 and eight tRNA genes. In the phylogenetic analyses, this species and other Astyanax were paraphyletic.

Mitochondrial Genome Structures and Phylogenetic Analyses of Two Tropical Characidae Fishes

“…Accurate species identification and understanding of the systematic relationships among species are useful for protecting existing species and discovering new species. However, the classification of Characidae species remains difficult because of the morphological similarities among many species ( Wilkens, 1971 ; Langerhans et al, 2003 ; Oliveira et al, 2011 ; Barreto et al, 2017 ).…”

Ten Complete Mitochondrial Genomes of Gymnocharacini (Stethaprioninae, Characiformes). Insights Into Evolutionary Relationships and a Repetitive Element in the Control Region (D-loop)

“…Hundreds of studies describing mitogenomes have been published in the last few years. Despite being the most sequenced genome nowadays (Smith, 2015), to this date, just the mitogenomes of A. mexicanus (Nakatani et al, 2011), P. paranae (Silva et al, 2016), Deuterodon giton (Barreto et al, 2017), P. fasciatus, and A. altiparanae (Calegari et al, 2019) are published. In an attempt to fill this gap, we focused on the three species complex of the group (A. bimaculatus, P. scabripinnis and P. fasciatus) to present here the complete sequences of the mitochondrial genome of 10 species/cytotypes of Astyanax/Psalidodon.…”

Ten complete mitochondrial genomes of Gymnocharacini (Stethaprioninae, Characiformes): evolutionary relationships and a repetitive element in the Control Region (D-loop)

“…mexicanus [30], P. paranae [31] and D. giton [32]. All PCGs, except the Nd6 gene, are on the heavy chain.…”

“…Our study also reaffirmed the validity of P. rioparanaibano as an evolutionary significant unity (ESU) distinguishable from P. paranae [27], although both are found in the Paranaíba river basin. Besides the great genetic distance observed between P. paranae and P. rioparanaibano (2.3%, Table 4), it was possible to observe that both cytotypes of P. rivularis , inhabitants of the São Francisco River, are closer to P. Figure 2) when describing the mitogenome of the species, Barreto et al [32] preprint (which was not certified by peer review) is the author/funder. [33].…”

“…Hundreds of papers describing mitogenomes have been published in the last few years, and despite being the most sequenced genome nowadays [29], to this date, just the mitogenomes of A. mexicanus [30] , P. paranae [31], and Deuterodon giton [32], P. fasciatus and A. altiparanae [33] are published. In an attempt to fill this gap, we present now the complete sequences of the mitochondrial genome of ten species/cytotypes of Astyanax/Psalidodon genus , discussing the evolutionary relationships among these species and the presence of a repeat in the control region.…”