Table 1. Temporal sample sizes, genetic diversity estimates and inbreeding coefficients.
Spring ID/Year Sampled | No. Snails | No of Loci | Mean Allelic Richness | Mean Heterozygosity | FIS | |
Observed | Expected | |||||
Bopeechee 004 | ||||||
1988 | 25 | 5 | 2.6 | 0.279 | 0.255 | −0.118 |
1989 | 25 | 5 | 2.5 | 0.218 | 0.195 | −0.124 |
1990 | 25 | 5 | 2.2 | 0.235 | 0.182 | −0.305 |
2002 | 25 | 5 | 3.3 | 0.232 | 0.216 | −0.077 |
2003 | 25 | 5 | 3.1 | 0.231 | 0.211 | −0.098 |
2004 | 25 | 5 | 3.0 | 0.192 | 0.210 | 0.089 |
2005 | 20 | 5 | 3.1 | 0.235 | 0.236 | 0.002 |
2006 | 25 | 5 | 3.0 | 0.180 | 0.200 | 0.100 |
Dead Boy 005 | ||||||
1988 | 25 | 5 | 2.5 | 0.222 | 0.231 | 0.043 |
1989 | 26 | 5 | 2.7 | 0.202 | 0.201 | −0.004 |
1990 | 25 | 5 | 2.3 | 0.336 | 0.254 | −0.332 |
1995 | 11 | 5 | 2.3 | 0.253 | 0.213 | −0.197 |
2002 | 25 | 5 | 2.4 | 0.164 | 0.185 | 0.118 |
2003 | 25 | 5 | 2.7 | 0.200 | 0.200 | 0.002 |
2004 | 25 | 5 | 2.3 | 0.176 | 0.185 | 0.047 |
2005 | 25 | 5 | 2.5 | 0.216 | 0.199 | −0.089 |
2006 | 25 | 5 | 2.5 | 0.208 | 0.221 | 0.062 |
Sulphuric 012 | ||||||
1988/1989* | 15 | 5 | 2.4 | 0.284 | 0.219 | −0.311 |
1995 | 13 | 5 | 3.5 | 0.274 | 0.272 | −0.008 |
2002 | 25 | 5 | 3.5 | 0.252 | 0.271 | 0.072 |
2003 | 25 | 5 | 3.7 | 0.342 | 0.296 | −0.161 |
2004 | 25 | 5 | 3.3 | 0.293 | 0.271 | −0.080 |
2005 | 25 | 5 | 3.3 | 0.264 | 0.261 | −0.010 |
2006 | 25 | 5 | 3.5 | 0.260 | 0.289 | 0.102 |
Sulphuric 024 | ||||||
1988 | 18 | 5 | 2.5 | 0.244 | 0.216 | −0.134 |
1989 | 20 | 5 | 2.7 | 0.310 | 0.244 | −0.281 |
1990 | 20 | 5 | 2.4 | 0.305 | 0.214 | −0.446 |
2002 | 25 | 5 | 3.0 | 0.220 | 0.234 | 0.063 |
2003 | 25 | 5 | 3.1 | 0.272 | 0.240 | −0.136 |
2004 | 25 | 5 | 3.2 | 0.244 | 0.220 | −0.112 |
2005 | 25 | 5 | 3.1 | 0.204 | 0.209 | 0.023 |
2006 | 25 | 5 | 2.9 | 0.220 | 0.204 | −0.078 |
West Finniss 026 | ||||||
1988 | 25 | 5 | 2.9 | 0.207 | 0.207 | 0.010 |
1989 | 22 | 5 | 2.5 | 0.307 | 0.258 | −0.281 |
1990 | 9 | 5 | 1.8 | 0.306 | 0.245 | −0.612 |
2002 | 33 | 5 | 3.3 | 0.222 | 0.236 | 0.063 |
2003 | 25 | 5 | 3.3 | 0.232 | 0.241 | 0.039 |
2005 | 25 | 5 | 3.2 | 0.252 | 0.227 | −0.111 |
2006 | 20 | 5 | 2.9 | 0.190 | 0.206 | 0.077 |
*There were <5 individual snails available for SS012 from 1989 and were therefore combined with the 1988 samples.
FIS values in bold are significant at the p<0.05 level.