VVARLEN and CHESTER: LARVAL SPOT OFF NORTH CAROLINA 



Q. 



< 



X 



o 



< 

 2 



20 



10 



30 



20 



10 



I- 

 < 

 o 



UJ 



oc 



^ oc 

 o < 



3 



>- 



$ 20 



3 

 OC 



m 



u. 10 



(21) 



-cm 

 PI 



(21) 



—cm — 



INLET 

 (12) 



HXD 1 



PI 



H h 



(48) 



I — n 



C-11 



30 



20 



10 



30 



OC 



g 20 



g 10 



"30 



S 20 

 CO 



> 



O 10 



(7) 



I — CEM 

 PI 



( 



(225) 

 113- 



(9) 



KXH 

 PI 



(9) 



\-cn — I 

 PI 



C-10 



(84) 



-cm — I 



C-9 



(9) 



i-nzH 

 PI 



U (9) 



I TIH 



PI 



(32) 



-CD— I 



C-8 



(71) 



-a- 



C-7 



10 20 

 I NOVEMBER 



T 



I 



I 



10 20 

 DECEMBER 



"W 



I 



I 



I 



I 



10 20 

 JANUARY 



30. 



10 20 

 FEBRUARY 



J L 



10 

 I MARCH 



SPAWNING DATE 



Figure 2.— Schematic plots of the spawning times of larval spot caught in the ocean (cruises 7-11 of RV John 

 de Wolf 11) and late-larvae/early-juvenile spot caught in the Newport River estuary at Pivers Island, NC. In 

 each distribution, the vertical line is the median value and 50% of the data points fall within the block. Lines 

 beyond the boxes represent the range of data points. 



curves were not significantly different between years 

 [Hotelling's T~ test of A . a, and L- Bernard 



(0)' 



'(0)' 



(1981) as modified by Hoenig and Hanumara (1983)]. 

 Age-specific growth rates for both years decHned 

 from =5%/d at age 10 d to <l%/d at age 90 d. 

 lb determine differences in growth rates for two 



groups of larvae of different ages but from the same 

 cohort, we back-calculated lengths at 5-d intervals 

 up to 25 d for 10 larvae caught at stations 15 and 

 16 on 15-16 January 1980 and for 10 larvae caught 

 at Beaufort Inlet on 19 March 1980 (Ikble 2). 

 Although the estimated mean spawning date for 



591 



