HOUDE: VITAL RATES, AND ENERGETICS OF MARINE FISH LARVAE 



of food to gi'ow at their observed, average rates. 

 Because it depends on the relationship between 

 growth rate and temperature, the Qi,, for inges- 

 tion rate in the 5°-;30°C range is 2. 11, the same as 

 that calculated for growth rate. 



From the estimates of weight-specific inges- 



tion (Table 6), the numbers of food organisms 

 were calculated that would satisfy the growth 

 requirements of first-feeding larvae of the 10 

 species. The number of required prey is directly 

 proportional to growth rate and to Wq, the initial 

 dry weight of a larva, and is inversely propor- 



.60 



.50 



.40 



.30 



^ .20 



>. 

 o 



c 



0) 



o 



)^ 

 «^ 



LU 



% 



o 



(0 

 09 



o 



i.. 



o 



10 



PA 



CH 



DL 



EM 



AL 



SJ 



AR 



MS 



AM 



PD 



2.0 



2.5 



3.3 



5.0 



10.0 



o 



c 



*♦— 

 uj 

 c 

 o 

 'w 



> 

 c 

 o 

 O 



10 15 20 



Temperature (°C) 



25 



30 



Figure 4. — Gro.ss growth efficiency (K,) and conversion efficiency (Ki ') of marine 

 fish larvae in relation to temjjerature (T). A. Ranges and midpoints of K, and T values. 

 Data, letters designating species and references are from Table 5. B. Mean K, and 0.95 

 confidence limits from the attempt to regress midpoint Kj on midpoint T. There was no 

 significant regression of K, on T. 



483 



