Table II. — Measurements on Auxis thazard larvae reared in a small 

 (500 liter) aquarium (Harada, Murata. and Miyashita 1973). 



Days 



after 



hatching 



Total 

 length 



Fork 

 length 



Body 

 depth 



(mm) 



» « TOTAL LENGTH 



o o WATER TEMP 



1 1 TOTAL LENGTH 



A A WATER TEMP 



IN LARGE TANKS 

 IN A SMALL TANK 



Body 

 weight 



Shizuoka Prefecture (Ueyanagi et al. 1973). In one ex- 

 periment, the larvae, which were fed rotifers, copepods, 

 larvae of sea bream and goby, choppwd bivalve meat, 

 and chopped fish flesh, survived up to 67 days after fer- 

 tilization. 



In other rearing trials of A. rochei conducted at the 

 Shirahama Fisheries Laboratory of Kinki University, 

 Wakayama Prefecture, in June 1972, about 40,000 eggs 

 were collected from mature females caught in a trap net 

 near Oshima Island by Cape Shionomisaki, fertilized, 

 and transported to the laboratory (Harada, Murata, and 

 Furutani 1973). The buoyant, spherical fertilized eggs, 

 which measured between 0.97 and 0.99 mm in diameter 

 (Fig. 20), hatched 38-52 h later at temperatures ranging 

 from 21.4° to 23.5°C. The newly hatched larvae ranged 

 from 3.3 to 3.6 mm TL. Fed the same diet as that given 

 larvae of A. thazard as previously described and con- 

 fined in one small 0.5-ton aquarium and two large 

 aquaria of 3- and 30-ton (30,000 liter) capacities, the lar- 

 vae of A. rochei, like those of A. thazard, grew faster in 

 the large aquaria than in the small aquarium (Tables 13, 

 14: Fig. 21). 



Table 13. — Measurements on Auxis rochei larvae reared in a small 

 (500 liter) aquarium (Harada, Murata, and Furutani 1973). 



DAYS AFTER HATCHING 



Figure 19. — Growth curves of Auxis thazard larvae reared in two 

 large (3,000 and 70.000 liter) and one small (.500 liter) aquaria. 

 Length measurements are based on a single fish. (Harada, Mura- 

 ta, and Miyashita 1973.) 



Table 12.— Measurements on Auxis thazard larvae reared in two 

 large (3,000 and 70,000 liter) aquaria (Harada, Murata, and Miya- 

 shita 1973). 



3.47 

 3.8 

 64.0 

 120.0 

 89.0 

 120.0 



112.0 

 84.0 

 115.0 



0.66 

 0.78 

 7.5 

 18.0 

 14.0 

 18.0 



10.6 

 5.5 

 10.6 



Table 14.— Measurements on Auxis rochei larvae reared in two large 

 (3,000 and 30,000 liter) aquaria (Harada, Murata, and Furutani 



1973). 



3.49 

 3..58 

 49.00 

 88.00 

 140.00 

 152.00 

 144.00 

 1.52.00 

 145.00 

 1.57.00 

 155.00 

 120.00 

 155.00 



82.0 

 120.0 

 142.0 

 138.0 

 143.0 

 136.0 

 152.0 

 145.0 

 112.0 

 145.0 



0.62 

 0.73 

 7.70 

 18.00 

 30.00 

 32.00 

 24.00 

 28.00 

 26.00 

 28.00 

 26.00 

 18.00 

 30.00 



25.0 

 32.5 

 21.9 

 28.2 

 24.0 



24 



