FIGURES 



39. Relation between relative size of the parent stock, as measured by 

 Middle Atlantic catch per unit of effort, and the natural logarithm (In) 

 of R/P where R=year-class abundance and P=spawning stock (Num- 

 bers indicate year classes) 22 



40. Relation between relative size of the parent stock, as measured by 

 Middle Atlantic catch per unit of effort and year-class abundance 

 (Numbers indicate year classes) 22 



Al. Weight frequencies of menhaden in July, expressed as percentage 



deviation from average weight, Chesapeake Bay, 1955-68 25 



A2. Weight frequencies of menhaden in July, expressed as percentage 

 deviation from average weight. Middle Atlantic Area, 1955-68 (NS = 

 No sample) 26 



A3. Weight frequencies of menhaden in July, expressed as percentage 

 deviation from average weight. North Atlantic Area, 1955-68 (NS = 

 No sample) 26 



A4. Weight frequencies of menhaden in July, expressed as percentage 

 deviation from average weight, South Atlantic Area, 1955-68 (NS = 

 No sample) 26 



A5. Weight frequencies of menhaden in December, expressed as percentage 

 deviation from average weight, North Carolina fall fishery, 1955-68 

 (NS = No sample) 26 



TABLES 



1. Estimated millions of menhaden of different year classes caught as 

 ages 0, 1, 2, and 3 in the Chesapeake Bay and Middle Atlantic Areas 



and percentage of the catch taken in each area, 1954-66 13 



2. Number of Atlantic menhaden caught in the purse seine fishery by 



year class, 1955-68 15 



3. Estimated apparent mortalities of Atlantic menhaden , based on catch 



effort and age data, by area 19 



Al. Calculated numbers of Atlantic menhaden caught by the purse seine 



fishery, by age and area, 1955-68 28 



A2. Average weight of Atlantic menhaden caught by the purse seine 



fishery, by age and area, 1955-68. (Numbers in parentheses are 



samples of less than 10 fish.) 30 



