[No authors listed]
The grass carp is an important farmed fish, accounting for â¼16% 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 49-54 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.
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cds1, pmvk, sox8a, sox32, sox10, sox19a, clocka, sox3, sox21a, sox17, sox11a, sox11b, acat2, sox4a, arntl1b, sox8b, sox4b, hmgcs1, sox7, sox21b, msmo1, cyp51, sox1a, sc5d, mvk, mvda, tm7sf2, dhcr24, naa20, nsdhl, fdps, idi1, pld1a, sox14, hmgcra, rorca, sox12, sox1b, bhlhe41, cel.2, sox6, sox5, pla2g1b, fdft1, sox9a, sox9b, sox19b, hsd17b7, lss, sox18, sqlea
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