CONTENTS 



FIGURES - Continued 



Page 



9 Female gonad in the partly spent stage 30 



10 Female gonad in the spent stage 30 



11 Percent of females in early active stage 32 



12 Percent of females in late active stage 33 



13 Percent of females in ripe stage 34 



14 Percent of females in partly spent stage 36 



15 Percent of females in spent stage 37 



16 Percent of Pismo clams in inactive stage 38 



17 Size of female, male, and immature Pismo clams 39 



18 Hermaphrodite gonad 40 



19 Regression lines for growth rates of marked populations 



of Pismo clams 48 



20 Mean daily arithmetic growth rate (Kg) of Pismo clams .... 50 



21 Age structure of Pismo clams at Monterey Bay Academy, 



October 1973 52 



