GRAHAM, CHENOWETH, and DAVIS: LARVAL HERRING 



12 



10- 



I eh 

 o 



z 



4 

 O 



2 - 



SEP. OCT. NOV. DEC. JAN. FEB. MAR. APR. MAY 



173 



12 



10 



lO 



o 



z 

 < 



1965 -66 

 N=2462 





SEP. OCT. NOV. DEC. JAN. FEB. MAR. APR. MAY 



12 r 



10 



I- 





2 • 



Ot 



A> 218 



B • 



1966 -67 

 N- 1539 





SEP. OCT. NOV. DEC. JAN. FEB. MAR. APR. MAY 



FiGxmE 6. — Seasonal changes in larval abundance in 

 the Boothbay area during 1964-67. Values are plotted 

 for outer (A), lower (B), and upper estuarine (C) 

 stations. 



increase in length in the autumn followed by a 

 more gradual increase in the winter and spring 

 (Figure 7) . During the autumn and spring the 

 increase in length accompanied a comparable 

 increase in weight, but not in the winter when 

 the larvae were very thin (Chenoweth, 1970). 

 In the coastal area the increase in length 



35 p 



30- 



251- 

 20 



15 



10 



2 



X 



z 



< 

 > 



< 



< 

 liJ 



5- 







COASTAL AREA 

 1962 - 67 



_L 



J I I L 



J I 



SER OCT. NOV. DEC. JAN. FEB. MAR. A PR. MAY 

 40r 



35 1- 

 30 

 25 

 20 

 15 

 10 

 5 



1964- 65 v"'-. 

 l965-66-7<:-''V 



^1966-67 



BOOTHBAY AREA 



I  I I L 



I I I 



SER OCT NOV. DEC. JAN. FEB.MAR.APR.MAY 



Figure 7. — Seasonal change of mean larval length in 

 the Boothbay and coastal areas, 1962-67. 



313 



