Table 1. Summary of sequencing and assembly for the Venus clam, Cyclina sinensis.

Reads	Sample T	Sample M
Mean length (bp)	217+205	216+203
Total number*	5,483,161(87.49%)	6,694,694(86.79%)
Total bases (bp)	2,314,488,797	2,808,369,022
Q20 percentage	97.38%	97.96%
All Transcripts (≥250 bp)
Total number	70,079
Total length (bp)	68,712,488
Unigene number	59,019
N50 length (bp)	1,670
Mean length (bp)	980
ORFs/CDS	35,103

* indicates the proportion of reads that could be mapped to transcripts.