Rickey: Maturity, spawning, and seasonal movement of Atheresthes stomias 



129 



Yamamoto (1956) and stage definitions used by 

 Yamamoto (1956), Wallace and Selman (1981), 

 Hunter and Macewicz (1985), and West (1990). The 



presence of a and ft atretic oocytes was noted, al- 

 though no attempt was made to differentiate a atretic 

 oocytes by developmental stage. Postovulatory fol- 



