Genetic evidence substantiates transmission of Trichinella spiralis from one swine farm to another

Parasites & Vectors

Table 2 Summary of the genetic variability in 15 Trichinella spiralis larval cohorts. F1a-d samples from outbreak 1, F2 from outbreak 2, and WB1-10 from hunted wild boar

Pop	N	N_a	N_e	H_o	H_e	Pl (%)	F_is
F1a
Mean	34.8	1.5	1.1	0.04	0.05	50.00	0.213
SE	0.2	0.2	0.1	0.03	0.04
F1b
Mean	32.8	1.3	1.0	0.03	0.04	33.33	0.186
SE	0.2	0.2	0.0	0.02	0.03
F1c
Mean	34.7	1.2	1.1	0.10	0.07	16.67	− 0.417^a
SE	0.2	0.2	0.1	0.10	0.07
F1d
Mean	9.0	1.0	1.0	0.00	0.00	0.00	NA
SE	0.0	0.0	0.0	0.00	0.00
F2
Mean	11.0	1.0	1.0	0.00	0.00	0.00	NA
SE	0.0	0.0	0.0	0.00	0.00
WB1
Mean	20.7	2.7	1.6	0.31	0.33	100.00	0.093
SE	0.2	0.5	0.2	0.07	0.07
WB2
Mean	9.0	1.7	1.1	0.11	0.10	50.00	− 0.055
SE	0.0	0.3	0.1	0.05	0.04
WB3
Mean	32.5	1.5	1.3	0.17	0.17	50.00	− 0.01
SE	0.3	0.2	0.1	0.09	0.08
WB4
Mean	31.8	1.5	1.3	0.13	0.15	50.00	0.182
SE	0.2	0.2	0.2	0.07	0.09
WB5
Mean	9.8	1.2	1.1	0.04	0.06	16.67	0.407
SE	0.2	0.2	0.1	0.04	0.06
WB6
Mean	12.0	1.5	1.2	0.07	0.10	50.00	0.375
SE	0.0	0.2	0.1	0.04	0.07
WB7
Mean	12.0	1.5	1.4	0.14	0.18	33.33	0.262
SE	0.0	0.3	0.2	0.09	0.11
WB8
Mean	9.8	1.5	1.5	0.22	0.24	50.00	0.114
SE	0.2	0.2	0.2	0.12	0.11
WB9
Mean	8.0	1.3	1.2	0.10	0.11	33.33	0.146
SE	0.0	0.2	0.1	0.07	0.07
WB10
Mean	11.0	1.0	1.0	0.00	0.00	0.00	NA
SE	0.0	0.0	0.0	0.00	0.00
Total
Mean	18.60	1.42	1.18	0.10	0.11	0.36
SE	1.15	0.07	0.04	0.02	0.02	0.07

N, average number of individuals per locus; N_a, average number of alleles per locus; N_e, average effective number of alleles per locus; H_o: average observed heterozygosity per locus, H_e: average expected heterozygosity per locus; Pl: percentage of polymorphic loci; F_is, inbreeding coefficient; SE, standard error; NA, not applicable
^aSignificant deviation from Hardy-Weinberg expectation (nominal P level set to 0.05)

ISSN: 1756-3305