Table 1

Location- and population-specific survival rates
Lab control Location Population
N females/males fertilized survived °C day degree survived hatched lost survived hatched lost egg diameter
Kiese 10/10 97.5% 100% 6.1 517 4.0% 61.9% 2.8% 53.1% 24.0% 2.8% 4.5 ± 0.2
Dorfbach 10/10 94.2% 100% 6.5 522 65.0% 0.0% 1.6% 52.5% 20.3% 2.8% 4.7 ± 0.3
Biberenbach 5/10 92.5% 100% 5.2 494 40.5% 6.0% 0.8% 58.0% 28.4% 2.8% 4.9 ± 0.2
Giesse 8/10 95.4% 97.3% 6.8 472 76.9% 47.4% 4.6% 54.4% 23.7% 1.8% 5.0 ± 0.3
Worble 6/10 94.2% 100% 5.8 463 88.5% 31.5% 1% 58.1% 28.3% 2.6% 5.1 ± 0.2

Number of females and males used to generate embryos, fertilization and survival rates until hatching in the lab-reared control groups, average temperature (°C) and day degrees at each location between time of burial and retrieval, location-specific and population-specific survival rates, rates of hatching among the survivors, and rates of missing eggs at retrieval from streams (‘lost’). The last column shows mean population egg diameter in mm (±SD).

Stelkens et al.

Stelkens et al. BMC Evolutionary Biology 2012 12:247   doi:10.1186/1471-2148-12-247

Open Data