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Transcriptome analysis revealed potential mechanisms of channel catfish growth advantage over blue catfish in tank culture environment

ABSTRACT: Transcriptome analysis revealed potential mechanisms of channel catfish growth advantage over blue catfish in tank culture environment

PROVIDER: PRJNA1040907 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26844800_1.fastq.gz	Fastqsanger.gz
	SRR26844800_2.fastq.gz	Fastqsanger.gz
	SRR26844801_1.fastq.gz	Fastqsanger.gz
	SRR26844801_2.fastq.gz	Fastqsanger.gz
	SRR26844802_1.fastq.gz	Fastqsanger.gz

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Transcriptome analysis revealed potential mechanisms of channel catfish growth advantage over blue catfish in tank culture environment

Project description:Channel catfish and blue catfish represent two economically important freshwater aquaculture species in the United States. Our study aims to investigate the gene expression differences between these two catfish species by high-throughput RNA sequencing to understand their associated phenotypic differences in growth and disease resistant. Our transcriptomic analyses provide some insights into gene function differences between the two species and the molecular basis of channel catfish growth advantage in the tank culture environment.

2023-11-20 | GSE247918 | GEO

Environmental dependent heterosis and transgressive gene expression in reciprocal hybrids between the channel catfish Ictalurus punctatus and the blue catfish Ictalurus furcatus

Project description:The hybrid between female channel catfish (Ictalurus punctatus) and male blue catfish (Ictalurus furcatus) is superior in feed conversion, disease resistance, carcass yield, and harvestability compared to both parental species. However, heterosis and heterobeltiosis only occur in pond culture, and channel catfish grow much faster than the other genetic types in small culture units. This environment-dependent heterosis is intriguing, but the underlying genetic mechanisms are not well understood. In this study, phenotypic characterization and transcriptomic analyses were performed in the channel catfish, blue catfish, and their reciprocal F1s reared in tanks. The results showed that the channel catfish is superior in growth-related morphometrics, presumably due to significantly lower innate immune function, as investigated by reduced lysozyme activity and alternative complement activity. RNA-seq analysis revealed that genes involved in fatty acid metabolism/transport are significantly upregulated in channel catfish compared to blue catfish and hybrids, which also contributes to the growth phenotype. Interestingly, hybrids have a 40-80% elevation in blood glucose than the parental species, which can be explained by a phenomenon called transgressive expression (overexpression/underexpression in F1s than the parental species). A total of 1,140 transgressive genes were identified in F1 hybrids, indicating that 8.5% of the transcriptome displayed transgressive expression. Transgressive genes upregulated in F1s are enriched for glycan degradation function, directly related to the increase in blood glucose level. This study is the first to explore molecular mechanisms of environment-dependent hetero-sis/heterobeltiosis in a vertebrate species and sheds light on the regulation and evolution of heterosis vs. hybrid incompatibility.

2022-01-05 | GSE186603 | GEO

Project description:Catfish farming is the largest aquaculture industry in the U.S., where hybrid catfish produced by channel catfish, Ictalurus punctatus ♀ × blue catfish, I. furcatus ♂, represent >50% of the harvest. Typically, older blue catfish (≥5 years) are selected for artificial fertilization. However, observations at our facilities and reports from hatcheries indicate a high degree of variation in reproductive performance among individuals. Thus, it is essential to establish links between paternal age and reproductive success, as it is apparent that advanced paternal age leads to changes in reproductive performance. Since there are no prior studies regarding the changes in testis transcriptome in blue catfish males during aging, we evaluated global gene expression of testis at age 2,4,7 and 9. Significant differential expressed genes and gene ontology of pairwise comparisons between age 2 and each test age are presented and discussed.

2025-03-17 | GSE290987 | GEO

Identification of transcriptome markers in blue catfish cryopreserved sperm to predict male reproductive performance for catfish aquaculture

Project description:Catfish is the most important species in US aquaculture, accounting for 70% of freshwater production. The production of hybrids of female channel catfish (Ictalurus punctatus) and male blue catfish (I. furcatus) constitutes over 50% of the total harvest due to their superior production traits and enhanced disease resistance. However, hybrids cannot be produced naturally, and male must be euthanized for sperm collection. An appropriate storage condition is essential to preserve the sperm’s ability to fertilize eggs during the female spawning season. Cryopreservation is a widely used method for sperm storage. However, it has been shown to affect sperm gene expression in many vertebrate species. A high degree of individual variability among cryopreserved sperm was reported, resulting in huge variations in hatch rate. Since high-quality gametes are the prerequisites for hybrid catfish reproduction, in this study, we investigate the molecular mechanisms underlying male reproductive performance, which is critical for the accurate prediction of hatching rate and offspring performance in hatchery environments.

2025-05-16 | GSE296208 | GEO

Transcriptome analysis reveals key gene expression changes in blue catfish sperm in response to cryopreservation

Project description:Cryopreservation of blue catfish sperm can cause variable embryo hatch rates, which is the limiting factor for hybrid catfish breeding. In this study, we investigated gene expression changes caused by cryopreservation using transcriptome profiles of fresh sperm samples and cryopreserved sperm from the same set of blue catfish.

2022-06-26 | GSE204687 | GEO

Global assessment of the acute phase response in channel catfish after infection with a Gram negative bacterium

Project description:The acute phase response (APR) is a set of metabolic and physiological reactions occurring in the host in response to tissue infection or injury and is a crucial component of the larger innate immune response. The APR is best characterized by dramatic changes in the concentration of a group of plasma proteins known as acute phase proteins (APP) which are synthesized in the liver and which function in a wide range of immunity-related activities. Utilizing a second generation high-density in situ oligonucleotide microarray for catfish, we have surveyed for the first time the APR in channel catfish liver following infection with Edwardsiella ictaluri, a fast-acting bacterial pathogen that causes enteric septicemia of catfish. Our catfish microarray design (28K) builds upon a previous 19K channel catfish array by adding recently sequenced immune transcripts from channel catfish along with 7159 unique sequences from closely-related blue catfish. Analysis of microarray results using a traditional two-fold change in gene expression cutoff and a 10% false discovery rate revealed a well-developed APR in catfish, with particularly high up-regulation (>50-fold) of genes involved in iron homeostasis (i.e. intelectin, hemopexin, haptoglobin, ferritin, and transferrin). Other classical APP upregulated greater than two-fold included coagulation factors, proteinase inhibitors, transport proteins, and complement components. Up-regulation of the majority of the complement cascade including the membrane attack complex components and complement inhibitors was observed. A number of pathogen recognition receptors (PRRs) and chemokines were also differentially expressed in the liver following infection. Validation with real-time PCR confirmed microarray results. Keywords: Disease state analysis

2007-10-23 | GSE6105 | GEO

Deep transcriptomic analysis reveals the dynamic developmental progression during early development of channel catfish (Ictalurus punctatus)

Project description:Seven early developmental stages in channel catfish, Ictalurus punctatus, were selected for transcriptome sequencing and analysis, Differential expression analysis and WGCNA approach was applied. The genes that play vital roles in embryogenesis and regulation of early development in channel catfish were detected. Our work reveals new insights for exploring the underlying mechanisms of channel catfish early development.

2020-08-26 | GSE152002 | GEO

Gene expression profiling at the single nuclei level of channel catfish spleen

Project description:Channel catfish, Ictalurus punctatus, is an important model U.S. aquaculutre species. Given its role in food production, the catfish immune response to industry-relevant pathogens has been extensively studied and has provided crucial information on innate and adaptive immune function during disease progression. To further examine the channel catfish immune system, single-nuclei RNA sequencing on whole spleens from three adult individuals was performed. Spleen cell suspensions were prepared by passing tissues through cell sieves. Single-cell RNAseq libraries were then prepared using the 10X Genomics Chromium X with the Next GEM Single Cell 3’ Reagents and sequenced 2x150bp on an Illumina sequencer. Each demultiplexed library was aligned to the CoCo_2.0 channel catfish reference assembly, filtered, and counted to generate feature-barcode matrices. Cluster analysis allowed for the identification of multiple cell types including erythrocytes, hematopoietic stem cells, B cells, T/NK cells, myeloid lineage derivatives, plasma cells and endothelial cells. The majority of cells detected were erythrocytes, which are nucleated in teleost fish.

2024-10-02 | GSE268023 | GEO

channel catfish (Ictalurus punctatus)

Project description:channel catfish (Ictalurus punctatus) Raw sequence reads

| PRJNA1211191 | ENA

Single-nuclei transcriptome analysis of IgM+ cells isolated from channel catfish spleen

Project description:Channel catfish, Ictalurus punctatus, are the primary cultured species of the catfish industry. Significant losses in production are attributed to bacterial diseases which are challenging to control and new interventions need to be developed. To gain insight into the in situ catfish immune system, we used single-nuclei RNAseq. We produced two single-nuclei atlases from three individual catfish using flow cytometry sorted IgM+ splenic cells. Libraries were prepared using the 10X Genomics system and sequenced on an Illumina sequencer. The reads were aligned to the reference genome (Ip Coco_2.0) using Cell Ranger (v8.0.0).

2025-04-09 | GSE278995 | GEO

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