Dataset Information

Complete mitochondrial genomes of three Neotropical sleeper gobies: Eleotris amblyopsis, E. picta and Hemieleotris latifasciata (Gobiiformes: Eleotridae).

ABSTRACT: We report the first complete mitochondrial genomes of three species of eleotrid fishes from the Pacific and Atlantic watersheds of Panama: Eleotris amblyopsis, E. picta, and Hemieleotris latifasciata. The three species have similar mitochondrial genomes with identical gene order; however, there are differences in the length of control region, 16S rRNA, and in seven of the tRNAs. In addition, ATP8 is one codon shorter in E. picta than in E. amblyopsis or H. latifasciata. We infer a phylogeny for Gobiiformes based on all mitochondrial protein-coding genes, which supports the monophyly of Eleotridae but does not recover Neotropical members of Eleotris as a distinct clade.

SUBMITTER: Alda F

PROVIDER: S-EPMC7800392 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Complete mitochondrial genomes of three Neotropical sleeper gobies: Eleotris amblyopsis, E. picta and Hemieleotris latifasciata (Gobiiformes: Eleotridae).

Alda Fernando F Adams Alexandria J AJ McMillan W Owen WO Chakrabarty Prosanta P

Mitochondrial DNA. Part B, Resources 20171017 2

We report the first complete mitochondrial genomes of three species of eleotrid fishes from the Pacific and Atlantic watersheds of Panama: Eleotris amblyopsis, E. picta, and Hemieleotris latifasciata. The three species have similar mitochondrial genomes with identical gene order; however, there are differences in the length of control region, 16S rRNA, and in seven of the tRNAs. In addition, ATP8 is one codon shorter in E. picta than in E. amblyopsis or H. l ...[more]

PMID: 33490475

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Project description:BackgroundCarp gudgeons (genus Hypseleotris) are a prominent part of the Australian freshwater fish fauna, with species distributed around the western, northern, and eastern reaches of the continent. We infer a calibrated phylogeny of the genus based on nuclear ultraconserved element (UCE) sequences and using Bayesian estimation of divergence times, and use this phylogeny to investigate geographic patterns of diversification with GeoSSE. The southeastern species have hybridized to form hemiclonal lineages, and we also resolve relationships of hemiclones and compare their phylogenetic placement in the UCE phylogeny with a hypothesis based on complete mitochondrial genomes. We then use phased SNPs extracted from the UCE sequences for population structure analysis among the southeastern species and hemiclones.ResultsHypseleotris cyprinoides, a widespread euryhaline species known from throughout the Indo-Pacific, is resolved outside the remainder of the species. Two Australian radiations comprise the bulk of Hypseleotris, one primarily in the northwestern coastal rivers and a second inhabiting the southeastern region including the Murray-Darling, Bulloo-Bancannia and Lake Eyre basins, plus coastal rivers east of the Great Dividing Range. Our phylogenetic results reveal cytonuclear discordance between the UCE and mitochondrial hypotheses, place hemiclone hybrids among their parental taxa, and indicate that the genus Kimberleyeleotris is nested within the northwestern Hypseleotris radiation along with three undescribed species. We infer a crown age for Hypseleotris of 17.3 Ma, date the radiation of Australian species at roughly 10.1 Ma, and recover the crown ages of the northwestern (excluding H. compressa) and southeastern radiations at 5.9 and 7.2 Ma, respectively. Range-dependent diversification analyses using GeoSSE indicate that speciation and extinction rates have been steady between the northwestern and southeastern Australian radiations and between smaller radiations of species in the Kimberley region and the Arnhem Plateau. Analysis of phased SNPs confirms inheritance patterns and reveals high levels of heterozygosity among the hemiclones.ConclusionsThe northwestern species have restricted ranges and likely speciated in allopatry, while the southeastern species are known from much larger areas, consistent with peripatric speciation or allopatric speciation followed by secondary contact. Species in the northwestern Kimberley region differ in shape from those in the southeast, with the Kimberley species notably more elongate and slender than the stocky southeastern species, likely due to the different topographies and flow regimes of the rivers they inhabit.

Dataset Information

Complete mitochondrial genomes of three Neotropical sleeper gobies: Eleotris amblyopsis, E. picta and Hemieleotris latifasciata (Gobiiformes: Eleotridae).

Publications

Complete mitochondrial genomes of three Neotropical sleeper gobies: <i>Eleotris amblyopsis</i>, <i>E. picta</i> and <i>Hemieleotris latifasciata</i> (Gobiiformes: Eleotridae).

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