FISHERY BULLETIN: VOL. 84, NO. 4 



Figure 2.— Degeneration of postovulatory follicles of skipjack tuna spawned in the laboratory. Arrow in left panel indicates the 

 postovulatory follicle that is seen under a higher magnification in right panel, a and b, h after spawning (no deterioration); c and 

 d, 12 h after spawning (pronounced degeneration); and e and f, 24 h after spawning (little remains of the degenerating postovulatory 

 follicle). Bar = 0.1 mm; g = granulosa epithelial cell layer; t = thecal cell layer; b = red blood cell(s); and a = early alpha stage atretic 

 oocytes. 



898 



