ArticleBMC genomics2023
A chromosome-level genome assembly of Hong Kong catfish (Clarias fuscus) uncovers a sex-determining region.
Article in BMC genomics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 17 citations in OpenAlex.
- Genome resequencing reveals an XX/XY sex determination system and male-specific markers iniScience · 2026Article
- Gill Adaptation of the Hong Kong Catfish (Ecology and evolution · 2026Article
- Chromosome-scale, haplotype-resolved genome of Bighead catfish for conservation and aquaculture.Scientific data · 2025Article
- Integrative QTL Mapping and Transcriptomic Profiling to Identify Growth-Associated QTL and Candidate Genes in Hong Kong Catfish (Animals : an open access journal from MDPI · 2025Article
- Heat Acclimation Enhances Brain Resilience to Acute Thermal Stress inAnimals : an open access journal from MDPI · 2025Article
- An improved chromosome-level genome assembly and annotation of Hong Kong catfish (Clarias fuscus).Scientific data · 2025Article
- Genome sequencing and assembly of near threatened Clarias dussumieri (Valenciennes, 1840), an endemic catfish of peninsular India.Scientific data · 2024Article
- Decoding the fish genome opens a new era in important trait research and molecular breeding in China.Science China. Life sciences · 2024Review
- Effects of Chronic Heat Stress on Growth, Apoptosis, Antioxidant Enzymes, Transcriptomic Profiles, and Immune-Related Genes of Hong Kong Catfish (Animals : an open access journal from MDPI · 2024Article
Corrections and comments
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Authors and funding
12 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundHong Kong catfish (Clarias fuscus) is an ecologically and economically important species that is widely distributed in freshwater regions of southern China. Hong Kong catfish has significant sexual growth dimorphism. The genome assembly of the Hong Kong catfish would facilitate study of the sex determination and evolution mechanism of the species.
resultsThe first high-quality chromosome-level genome of the Hong Kong catfish was constructed. The total genome was 933.4 Mb, with 416 contigs and a contig N50 length of 8.52 Mb. Using high-throughput chromosome conformation capture (Hi-C) data, the genome assembly was divided into 28 chromosomes with a scaffold N50 length of 36.68 Mb. A total of 23,345 protein-coding genes were predicted in the genome, and 94.28% of the genes were functionally annotated in public databases. Phylogenetic analysis indicated that C. fuscus and Clarias magur diverged approximately 63.7 million years ago. The comparative genome results showed that a total of 60 unique, 353 expanded and 851 contracted gene families were identified in Hong Kong catfish. A sex-linked quantitative trait locus identified in a previous study was located in a sex-determining region of 30.26 Mb (0.02 to 30.28 Mb) on chromosome 13 (Chr13), the predicted Y chromosome. This QTL region contained 785 genes, of which 18 were identified as sex-related genes.
conclusionsThis study is the first to report the chromosome-level genome assembly of Hong Kong catfish. The study provides an excellent genetic resource that will facilitate future studies of sex determination mechanisms and evolution in fish.
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