Blood et al.: Embryonic development of Theragra chalcogramma 



217 



optrc vesicle 



prospective 

 head and body 

 mesoderm 



optic vesicle 



myomeres 



blastopore 



lens 



E 



otic capsule 



H 



hatching 

 gland: 



hatching 

 glands 



J K L 



Figure 7 



Illustrations of preserved Theragra chalcogramma eggs. (A) Stage 11 (germ ring 3/4); (B) Stage 12 (blastopore 

 almost closed); (C) Stage 13 (early middle); (D) Stage 14 (middle middle); (E) Stage 15 (late middle); (F) Stage 16 

 (early late); (G) Stage 17 (tail 5/8 circle); (H) Stage 18 (tail 3/4 circle); (I) Stage 19 (tail 7/8 circle); (J) Stage 20 

 (tail full circle, lateral view); (K) Stage 20 (dorsal view); (L) Stage 21 (tail 1-1/8 circle). 



