The South China landmass has been characterized by a complex geological history, including mountain lifting, climate changes, and river capture/reversal events. To determine how this complexity influenced the landmass's phylogeography, our study examined phylogeography of Garra orientalis, cyprinid widely distributed in China, using sequences from mitochondrial DNA control region cytochrome b gene (1887 bp) polymorphisms thirteen microsatellite loci. In total, 157 specimens were collected...

Phylogeographical analyses on Squalidus argentatus samples from thirteen localities within mainland China and Taiwan were conducted for biogeographic studies, as their dispersal strictly depends geological evolution of the landmasses. A total 95 haplotypes genotyped mtDNA cyt b gene in 160 specimens nine river systems. Relatively high levels haplotype diversity (h = 0.984) low nucleotide (π 0.020) detected S. argentatus. Two major phylogenetic groups, B, revealed via analysis. The degree...

Coilia nasus is found in the Yangtze River and coastal waters of China, Korea, Japan. Two ecotypes (anadromous freshwater-resident populations) are distributed throughout basin based on their ecology behavior, but relatively little known about population structure this species. Analysis short interspersed element (SINE) insertions, which vary among individuals, has been acknowledged to provide a unique way study divergence. SINEs isolated from C. were characterized, enabled analysis SINE...

Geological events and landscape features, as well changes in the climate during Pliocene period, have shaped distribution of genetic diversity demographic history freshwater fish mainland China. In this study, we investigated phylogeny population structure Acrossocheilus species (A. fasciatus, A. kreyenbergii wenchowensis) Zhejiang region by mitochondrial cytochrome b (cyt-b) control (D-loop) s. Mitochondrial phylogenetic analysis revealed three major lineages (lineages A, B C), which may...

In this study, we sequenced the complete mitochondrial genome of Scaphiodonichthys acanthopterus (Cypriniformes, Cyprinidae). This genome, consisting 16,612 base pairs (bp), encoded genes for 13 protein-coding genes, two ribosomal RNAs, 22 transfer and one non-coding control region as those found in other vertebrates, with gene order identical to that typical vertebrates. The region, 941 bp length, is located between tRNA Pro Phe . overall composition heavy strand shows T 25.23%, C 26.85%, A...

Background Coilia nasus (Japanese grenadier anchovy) undergoes spawning migration from the ocean to fresh water inland. Previous studies have suggested that anadromous fish use olfactory cues perform successful spawn. However, limited genomic information is available for C. nasus. To understand molecular mechanisms of migration, it essential identify genes and pathways involved in migratory behavior Results Using de novo transcriptome sequencing assembly, we constructed two transcriptomes...

The non-native vermiculated sailfin catfish Pterygoplichthys disjunctivus (Weber, 1991) is recorded for the first time in eastern Nepal's aquatic systems.Native to South America, reports of P. Asia were India, with subsequent from Bangladesh, Hongkong, Indonesia, Malaysia, Singapore, Thailand and Vietnam.Our findings mark known occurrence a species Nepal.The public, policy makers, researchers, merchants ornamental fish all need be informed critically about release into natural water systems...

The cyprinid genus Onychostoma Günther, 1896 consists of 24 valid species distributed in Southeast Asia, including Taiwan, Hainan, mainland China and the Indochina region. In present study, we determined complete mitochondrial genome O. lepturum , which is 16,598 bp length, containing 13 protein-coding genes, two rRNA 22 tRNA genes a typical control region (D-loop). To verify molecular phylogeny subfamily Acrossocheilinae, provide new insights to better understand taxonomic status...

The objective of this study was to investigate 4 aquaculture populations Shanghai (SH), Hangzhou (HZ), Kaihua (KH) and Xianju (XJ) one wild population Yingshan (YS) spotted barbell (Hemibarbus maculates) assess their genetic diversity level the structure populations. dendrogram STRUCTURE revealed that XJ, KH, HZ jointly formed cluster, which SH YS were sequentially adhered. cultured maintained better, possible due favourable hatchery conditions decreased effect environmental selection...

Coilia nasus is widely distributed in the Yangtze River, coastal waters of China, Korea and Ariake Sound Japan. Several ecotypes exist this provides a useful model for study comparative diversity between molecular markers. Here we analyze compare nucleotide sequences single-copy ribosomal protein S7 gene intron 1 (rpS7) multiple-copy internal transcribed spacer (ITS1) species to phylogenetic signal two nuclear genes. Nucleotide substitutions among partial sequence mitochondrial cytochrome c...

Mitochondrial DNA cytochrome b sequences (1141 bp) in 229 specimens of Acrossocheilus paradoxus from 26 populations were identified as four lineages. The pairwise genetic distances among these lineages ranged 1.57 to 2.37% (mean= 2.00%). Statistical dispersal-vicariance analysis suggests that the ancestral distributed over mainland China and Northern Western Taiwan. Approximate Bayesian computation approaches show three Taiwan originated lineage through colonization routes during two...

Population genetic structure of Onychostoma lepturum on Hainan Island was investigated based mitochondrial CR + cyt b region in 63 specimens collected from four populations. analyses indicated significant (FST = 0.749) and displayed a relationship between phylogeny geography (NST 0.750 GST 0.140). Thirty-one mtDNA haplotypes were classified into lineages, these lineages had an almost allopatric distribution. The results statistical dispersal-vicariance analysis suggest that the ancestral...

SINEs are a type of nonautonomous retrotransposon that can transpose from one site to be integrated elsewhere in an organism genome. SINE insertion give rise genetic variants and regulate gene expression, allowing organisms acquire new adaptive capacity. Studies on this subject have focused the impacts genes. However, ecological disparities fish not yet been explained by SINEs. New were isolated Coilia nasus, which has two ecotypes-migratory resident-that differ their spawning migration...

is described from the Qiantang and Oujiang rivers in Zhejiang Province a tributary of Yangtze River adjacent to River. It distinguished congeners by following combination morphological features: no obvious anterior notch on tip upper lip; 45-52 lateral-line scales; 18-21 pre-dorsal two rows pharyngeal teeth; maxillary extending or slightly beyond vertical margin orbit adult males; pectoral fin pelvic nuptial tubercles cheeks lower jaw males, which are usually united basally form plate;...

We determined the complete mitochondrial genome (mitogenome) sequence of Sarcocheilichthys nigripinnis by using long polymerase chain reaction method. The total length S. mitogenome is 16,680 bp, including 13 protein-coding genes, 22 transfer RNAs, 2 ribosomal and a noncoding control region. overall base composition 26.36% for T, 26.67% C, 30.07% A, 16.90% G, with slight AT bias 56.43%.

Although the East Asian monsoon is believed to be an important driver for origin and evolution of biotas in this region, association has rarely been rigorously tested. Here, using phylogenetic comparative methods analyses key innovations adaptive traits, we investigated evolutionary patterns cyprinid opsariichthyin-xenocyprinin-cultrin clade; dominant species lakes rivers, which are typical productions climate. Our molecular revealed relationships as (Opsariichthys-tribe + (((Oxygaster-tribe...

Abstract The Pseudogastromyzon genus, consisting of species predominantly distributed throughout southeastern China, has garnered increasing market attention in recent years due to its ornamental appeal. However, the overlapping diagnostic attributes render commonly accepted criteria for interspecific identification unreliable, leaving phylogenetic relationships among unexplored. In present study, we undertake molecular and morphological examinations genus. Our analysis mitochondrial genes...

Squalidus argentatus (Sauvage and Dabry de Thiersant 1874) is a small-sized freshwater fish which distributed in Mainland China, Hainan Island Taiwan. The populations of S. have dropped sharply probably due to overharvesting water pollution recently. Eleven polymorphic microsatellite markers were developed for the cyprinid argentatus. These new tested on 43 individuals collected from Yangtze River Qiantang River. number alleles, observed expected heterozygosity per locus, two ranged 3 14,...

The oriental sucking barb, Garra orientalis, is a small to moderate-sized freshwater fish. In this study, the complete mitochondrial genome of G. was successfully sequenced for first time with total length 17,288 bp. structure consists 13 protein-coding genes, 2 ribosomal RNA 22 transfer (tRNA) genes and control region. Moreover, tandem repeat unit ranged from 259 260 bp (repeated 3–4 times) identified in region among orientalis individuals.

The Coilia nasus is an important fish species, which of commercial values in China. In order to manage the fisheries resources and development sustainable fishing strategies protect this 11 microsatellite loci polymorphisms mtDNA COI sequences were used examine genetic diversity C. Japan total, 40 haplotypes 93 alleles detected. phylogeny did not support population grouping, but distribution patterns results STRUCTURE analysis based on indicated a degree isolation species. Our study...