Table 3.
Mating system parameters for Posidonia australis meadows and by ‘families’ within meadows. Values are based on genotypes for seven microsatellite loci. *See Fig. 2.
| Parameter | Shark Bay meadows | Perth metropolitan waters | |||
|---|---|---|---|---|---|
| GU (±SD) | HP (±SD) | RST (±SD) | RPP (±SD) | CI (±SD) | |
| No. mature embryos genotyped/infructescence | 2–8 | 2–10 | 2–8 | 3–8 | 3–14 |
| Mean family size | 4.4 (±1.6) | 6.3 (±2.4) | 3.8 (±1.3) | 4.8 (±1.4) | 8.6 (±2.5) |
| Total number of aborted embryos | 9 | 15 (+21 mutant*) | 1 | 2 | 5 |
| Percentage of aborted embryos | 0.40 % | 13.60 % | 0.08 % | 1.30 % | 1.70 % |
| Number of families genotyped | 28 | 15 | 28 | 30 | 32 |
| Number of embryos genotyped | 123 | 94 | 106 | 144 | 274 |
| Mating system parameters by meadow: | |||||
| Parental inbreeding f | 0.19 (±0.15) | −0.20 (±0.01) | −0.09 (±0.02) | −0.11 (±0.06) | −0.20 (±0.05) |
| Multilocus outcrossing rate tm | 0.50 (± 0.09) | 0.57 (± 0.26) | 1.03 (±0.02) | 1.20 (±0.03) | 1.06 (±0.04) |
| Single-locus outcrossing rate ts | 0.54 (±0.10) | 0.59 (±0.27) | 1.13 (±0.03) | 1.20 (±0.00) | 1.04 (±0.04) |
| Biparental inbreeding tm–ts | −0.04 (±0.03) | −0.02 (±0.04) | −0.10 (±0.04) | 0.00 (±0.04) | 0.02 (±0.04) |
| Multilocus correlation of P within genets rp(w) | 0.90 (±0.19) | −0.93 (±0.33) | 0.11 (±0.13) | 0.21 (±0.06) | 0.68 (±0.02) |
| Effective number of pollen donors Nep(w) | 1.1 | 1.0 | 8.8 | 4.8 | 1.5 |
| Mating system parameters within family: | |||||
| Percentage (%) outcrossed families | 43.3 | 33.3 | 96.4 | 100.0 | 90.6 |
| Single-locus outcrossing rate—range ts (±SE) | −0.41–1.99 (±0.25) | −0.72–2.40 (±0.40) | 0.10–1.73 (±0.16) | 1.04–1.93 (±0.16) | 0.38–1.32 (±0.11) |
| Multilocus outcrossing rate—range tm (±SE) | −0.41–1.49 (±0.16) | −0.75–2.16 (±0.48) | 0.27–1.06 (±0.00) | 1.00–1.10 (±0.00) | 0.46–1.38 (±0.04) |