Percentages of embryonic stages during quiescence of Acartia tonsa.

On the top bright filter–and epifluorescent images can be seen for DAPI stained embryos of A. tonsa. Embryogenesis was divided into following stages: 1 cell (S1), 2 (S2), 4 (S3), 8 (S4), 16 (S5), 32 (S6), (S7) and 128 cells/blastula (S8), gastrulation (G). For each of the developmental times, 19±4 embryos were used for stage estimation. Contrast and brightness were adjusted for publication.