What's New?

The draft genome of the grass carp (Ctenopharyngodon idellus) (15 July 2015)

The draft genome of the grass carp (Ctenopharyngodon idellus) provides insights into its evolution and vegetarian adaptation

Transcriptome analysis of grass carp (Ctenopharyngodon idella) fed with animal and plant diets (15 December 2015)

Transcriptome analysis of grass carp (Ctenopharyngodon idella) fed with animal and plant diets.

Transcriptome analysis of head kidney in grass carp (12 July 2013)

Transcriptome analysis of head kidney in grass carp and discovery of immune-related genes

Construction and Characterization of Two Bacterial Artificial Chromosome Libraries of Grass Carp (June 2010)

Construction and Characterization of Two Bacterial Artificial Chromosome Libraries of Grass Carp

A consensus linkage map of the grass carp (Ctenopharyngodon idella) fed with animal and plant diets (24 February 2010)

A consensus linkage map of the grass carp (Ctenopharyngodon idella) based on microsatellites and SNPs

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What's Coming?

Hight-desity Genetic Linkage Map Constructing (2016)

Whole Genome Resequencing (2016)

RNA-seq Datasets (2016)

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2015 news

The draft genome of the grass carp (Ctenopharyngodon idellus) (15 July 2015)

The draft genome of the grass carp (Ctenopharyngodon idellus) provides insights into its evolution and vegetarian adaptation
The grass carp is an important farmed fish, accounting for ~16% of global freshwater aquaculture, and has a vegetarian diet. Here we report a 0.9-Gb draft genome of a gynogenetic female adult and a 1.07-Gb genome of a wild male adult. Genome annotation identified 27,263 protein-coding gene models in the female genome. A total of 114 scaffolds consisting of 573 Mb are anchored on 24 linkage groups. Divergence between grass carp and zebrafish is estimated to have occurred 4954 million years ago. We identify a chromosome fusion in grass carp relative to zebrafish and report frequent crossovers between the grass carp X and Y chromosomes. We find that transcriptional activation of the mevalonate pathway and steroid biosynthesis in liver is associated with the grass carp's adaptation from a carnivorous to an herbivorous diet. We believe that the grass carp genome could serve as an initial platform for breeding better-quality fish using a genomic approach.

Transcriptome analysis of grass carp (Ctenopharyngodon idella) fed with animal and plant diets (15 December 2015)

Transcriptome analysis of grass carp (Ctenopharyngodon idella) fed with animal and plant diets.
Numerous studies have been focused on the replacement of fish meal by other alternative protein sources. However, little is currently known about the molecular mechanism of utilization of diets with different protein sources in fish. Grass carp is a typical herbivorous fish. To elucidate the relationship between gene expression and utilization of animal and plant diets, transcriptome sequencing was performed in grass carp fed with chironomid larvae and duckweed. Grass carp fed with duckweed had significantly higher relative length of gut than those fed with chironomid larvae. 4435 differentially expressed genes were identified between grass carp fed with chironomid larvae and duckweed in brain, liver and gut, involved in cell proliferation and differentiation, appetite control, circadian rhythm, digestion and metabolism pathways. These pathways might play important roles in utilization of diets with different protein sources in grass carp. And the findings could provide a new insight into the replacement of fish meal in artificial diets.