Table 4. Allele and Genotype numbers in Non-selected (N) and Selected (S) populations.

Population	Locus	Number of worms	Number of alleles	Number of genotypes
N	Smbr5	202	19	52
	Smbr6	248	20	65
	Smbr9	211	19	40
	Smb13	213	14	36
	13TAGA	199	26	72
			Total 98	Total 265
S	Smbr5	203	7	28
	Smbr6	247	7	33
	Smbr9	211	7	46
	Smb13	214	7	37
	13TAGA	199	14	33
			Total 42	Total 112

Number of adult worms tested, in the Non-selected (N) and Selected (S) populations after 7 passages. The number of alleles and genotypes was determined by PCR. Scoring of the polymorphic microsatellite was conducted as described in Materials and Methods by using specific primers for each microsatellite locus. PCR reactions were performed in S and N worms obtained as described in the legend of Table 2.