DNA Taxonomy, Molecular Phylogeny and Population Genetics of Cartilaginous Fishes and Teleost Fishes

A special issue of Genes (ISSN 2073-4425). This special issue belongs to the section "Animal Genetics and Genomics".

Deadline for manuscript submissions: 15 September 2024 | Viewed by 1409

Special Issue Editors

Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Interests: environmental DNA; coral reef fish; fish mitogenome; fish phylogeny
Chinese Academy of Sciences Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Beijing, China
Interests: molecular phylogeny; population genetics; sharks and rays conservation in Northwest Pacific; fish life history

Special Issue Information

Dear Colleagues,

During the past decade, the remarkable increase in cartilaginous and teleost fishes genome sequencing has revolutionized molecular phylogeny and population genetics, with the outcome of stimulating insights into fish conservation biology. The IUCN Red List states that 30% of chondrichthyans are threatened by extinction, and overfishing is considered the main threat to their existence. Genetic approaches play an essential role in shark conservation; there has been some progress, but a great deal of work still lies ahead. Cartilaginous fish genomic sequences can be compared with other Osteichthyes to trace species’ evolutionary history and origin as well as phylogenetic relationships. Understanding the heritability of conservation biology requires a more comprehensive assessment of fish genetic variation. This Special Issue of Genes on “DNA Taxonomy, Molecular Phylogeny and Population Genetics of Cartilaginous Fishes and Teleost Fishes” aims to provide an overview of recent developments in this field of research, including critical perspectives on current and upcoming challenges.

Dr. Xiao Chen
Dr. Jie Zhang
Guest Editors

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Keywords

  • cartilaginous fish
  • teleost fish
  • molecular evolution
  • phylogeny
  • population genetics
  • genome sequencing
  • DNA taxonomy and DNA barcoding

Published Papers (1 paper)

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Research

14 pages, 2729 KiB  
Article
Evolution of the Critically Endangered Green Sawfish Pristis zijsron (Rhinopristiformes, Pristidae), Inferred from the Whole Mitochondrial Genome
by Chen Wang, Peiyuan Ye, Richard Pillans, Xiao Chen, Junjie Wang and Pierre Feutry
Genes 2023, 14(11), 2052; https://doi.org/10.3390/genes14112052 - 08 Nov 2023
Viewed by 963
Abstract
The green sawfish Pristis zijsron (Bleeker, 1851), a species of sawfish in the family Pristidae (Rhinopristiformes), mainly inhabits the Indo-West Pacific region. In this study, the complete mitochondrial genome of the critically endangered green sawfish is first described. The length of the genome [...] Read more.
The green sawfish Pristis zijsron (Bleeker, 1851), a species of sawfish in the family Pristidae (Rhinopristiformes), mainly inhabits the Indo-West Pacific region. In this study, the complete mitochondrial genome of the critically endangered green sawfish is first described. The length of the genome is 16,804 bp, with a nucleotide composition of 32.0% A, 24.8% C, 13.1% G, and 30.0% T. It contains 37 genes in the typical gene order of fish. Two start (GTG and ATG) and two stop (TAG and TAA/T-) codons are found in the thirteen protein-coding genes. The 22 tRNA genes range from 67 bp (tRNA-Ser) to 75 bp (tRNA-Leu). The ratio of nonsynonymous substitution (Ka) and synonymous substitution (Ks) indicates that the family Pristidae are suffering a purifying selection. The reconstruction of Bayesian inference and the maximum likelihood phylogenetic tree show the same topological structure, and the family Pristidae is a monophyletic group with strong posterior probability. Pristis zijsron and P. pectinata form a sister group in the terminal clade. And the divergence time of Rhinopristiformes show that P. zijsron and P. pectinata diverged as two separate species in about Paleogene 31.53 Mya. Complete mitochondrial genomes of all five sawfishes have been published and phylogenetic relationships have been analyzed. The results of our study will provide base molecular information for subsequent research (e.g., distribution, conservation, phylogenetics, etc.) on this endangered group. Full article
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Genetic signature of river capture imprinted in several Schizopygopsis fishes from the eastern Tibetan Plateau
Authors: -
Affiliation: -

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