THEILACKER and WATANABE: NUTRITIONAL STATUS OF NORTHERN ANCHOVY 



~I 1 1 1 1 1 1 1 1— 



10 15 



,..lll,.l 



FED 



5 



10 - 



5 - 



-1 — I — I — r 



I.I III. II 7; 



10 15 20 



1 I I 1 

 25 



20 

 STARVED Id/FED 



"1 — 1 — r-~j 



25 



STARVED 2d/FED 



cc 10 

 m 



i 5 



10 



15 



P I  , ^ 



1 1 I T I 1 1 1 1 



20 25 



STARVED 3d/FED 



"1 III T P r^~r 

 10 



15 



"T 1 — I r 



10 



T"^ 1 1 1 1 1 1 



20 25 



STARVED 1&2d 



15 



"T 1 1 1 1 1 1 1 1 



20 25 



STARVED 3&4d 



"1 — T r-"-r 



10 



I I I ^ 



1 I — I — I — I — I — I — I — I — I 

 15 20 25 



MIDGUT CELL HEIGHT (pm) 



Figure 5. — Midgut cell height measurements for Engraulis morda.v larvae 

 <4.00 mm raised using various feeding conditions. 



Table 4. — Paired comparison of midgut cell heights for six diets for northern anchovy <,4.00 mm SL: 

 f-test matrix and probabilities (P = < 0.01 , **: P = < 0.05,'; P = > 0.05, value). 



categories for first-feeding larvae: 1) a fed 

 category, 2) a category for 1 d delay in feeding 



(Sl/F), 3) an intermediate category (S2/F + S3/F 

 + S1&2), and 4) a starved category (S3&4). 



Calibrations for Field Studies 



To estimate daily stai'vation rates in the sea 

 using cell height, an approximation of the dura- 



463 



