Table 1 Summary and comparison of genome assembles and annotation of channel catfish and blue catfish

Chromosomal scaffolds^a

 Total assembled sequence (bp)

825,459,183

842,926,452

783,193,925

 Bases in chromosomes (bp)

815,116,898

814,096,688

758,102,267

 Scaffold NG50 (bp)

30,432,001

29,208,522

26,699,778

 Bases in unassigned contigs (bp)

10,342,285

28,829,764

25,091,658

 Sequence in chromosomes (%)

98.7

96.6

96.8

 Protein-coding genes

23,546

25,035

23,100^b

 GC content (%)

38.95

39.71

39.70

 Repetitive sequence (%)

45.5

47.6

44.0

 Chromosomal scaffolds

29

29

29

 Number of contigs

168

96

24,110

 Number of gaps

139

67

24,080

Sequence scaffolds^a

 Number of sequence scaffolds

664

454

9974

 Sequence scaffold L50

15

17

31

 Sequence scaffold N50 (bp)

23,836,692

19,747,932

7,726,806

 Sequence scaffold L90

39

48

185

 Sequence scaffold N90 (bp)

6,695,992

5,219,235

498,561

 Number of gaps

406

211

24,109

Sequence contigs

 Number of contigs

1070

645

34,615

 Contig NG50

6,717,455

12,841,013

69,181

 Contig L50

34

22

2,839

 Contig L90

206

102

10,984

 Contig N50 (bp)

6,717,455

12,841,013

77,200

 Contig N90 (bp)

522,535

1,003,721

16,103

 Longest contig (bp)

23,646,617

29,470,913

607,423

Centromeres

 Centromeres identified

29

29

-

 Fully sequence centromeres

7

9

-

 Partial centromere sequenced

22

20

-

Telomeres

 Sequenced from chromosome

29

29

-

 Sequenced from both ends

19

22

-

 Sequenced from 5′ end

2

0

-

 Sequenced from 3′ end

8

7

-