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Figure 7 | Frontiers in Zoology

Figure 7

From: The early development of the onychopod cladoceran Bythotrephes longimanus (Crustacea, Branchiopoda)

Figure 7

Schematic overview of the early division pattern of B. longimanus until the 32-cell stage. Lines represent the cleavage furrows as they appear at the surface and do not penetrate the complete egg until the 4th cleavage. Short lines mark the sister cell relationship according to the previous division. The four colors represent the quadrants of the 4-nuclei stage, with A - yellow, B - red, C - green, D - blue. The gray area in D indicates the region that is covered by yolk droplets on the surface of the cell. Left column (A-D): View of the vegetal pole (except in A in which the view of the animal pole is added). Middle column (A’-D’): View of the D derivatives, vegetal pole faces down. Right column (A”-D”): View of the vegetal pole during the division cycle.

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