Figure 3

Morphogenetic mechanism involved in the transition from a floating oil droplet (OD) to its entrapping by the oil covering layer (OCL). (3.1) Developmental stage E (48 hpf); (3.2) Transition between stage E and stage F (54 hpf); (3.3) Developmental stage F; (3.4) Developmental stage G (76 hpf). H embryo head, Y yolk sac, T embryo tail.