Table 1 Duration and size range (µm) of different developmental stages of Asterias rubens of the three laboratory salinity treatments (12, 15 and 18) and size range of larvae sampled from Kiel Fjord during the field study in 2009
Stage | Experimental salinity treatment | Kiel Fjord | |||||
|---|---|---|---|---|---|---|---|
12 | 15 | 18 | |||||
Stage duration | Length (μm) | Stage duration | Length (μm) | Stage duration | Length (μm) | Length (μm) | |
Early bipinnaria | ~20 days | 250–370 | 5 days | 410 | 5 days | 410 | |
Bipinnaria | 3 weeks | 410–490 | 1 week | 450–470 | 680–900 | ||
Early brachiolaria | 2 weeks | 440–690 | 3 weeks | 470–600 | 950–1,360 | ||
Brachiolaria | 3 weeks | 900–1,240 | 4 weeks | 750–900 | 950–1,360 | ||