Table 5.

Summary of EST-SSRs identified in the Pomacea canaliculata transcriptome

Searching item	Numbers
Total number of Unigene examined	135,121
Total size of examined Unigene (bp)	117,356,620
Total number of identified SSRs	16,717
Number of Unigene containing SSR	14,722
Number of Unigene containing more than 1 SSR	1,748
Number of SSRs present in compound formation	753
Di-nucleotide	10,554 (63.1%)
Tri-nucleotide	4,480 (26.8%)
Tetra-nucleotide	1,021 (6.10%)
Penta-nucleotide	321 (1.9%)
Hexa-nucleotide	341 (2.0%)