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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

From: Salinity dependence of recruitment success of the sea star Asterias rubens in the brackish western Baltic Sea

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