SCURA and JKRDE: PHYTOI'LANKTON AS FOOD FOR LARVAL ANCHOVY 



TABLE 2. — Laboratory feeding experiments showing the percentage of anchovy larvae that fed on: 1 ) diatoms — Ditylum brightwellii, 

 Chaetoceros affinis, Thalassiosira decipiens, and Leptocylindrus danicus; 2) dinoflagellates — Gymnodinium splendens, Gonyaulax 

 polyedra, Prorocentrum micans, and Peridimum trochoideum; and 3) flagellates — Chlamydomonas sp. and Dunaliella sp. 



was provided for 14 h/day by 40- W fluorescent 

 lamps as described earlier. 



Eight rearing containers were inoculated with 

 G. splendens and eight with Gonyaulax polyedra 

 at a concentration of 100 organisms/ml. As a sup- 

 plement to these food organisms, some containers 

 were also stocked with a combination culture of 

 the rotifer, Brachionus plicatilis, and the harpac- 

 ticoid copepod, Tisbe holothuriae, with final 



concentrations of 0.0, 0.1, 1.0, and 5.0 organisms/ 

 ml (Table 3). Duplicate experiments were run 

 simultaneously for all treatments including two 

 containers without dinoflagellates but stocked 

 with B. plicatilis and T. holothuriae, at a concen- 

 tration of 5 organisms/ml. 



The relative proportions of B. plicatilis and 

 T. holothuriae (hereafter also referred to as micro- 

 zooplankton) in the larval rearing containers 



TABLE 3. — Survival and growth of anchovy larvae reared for 10 days on different diet regimes. 



'Sample too small to weigh 



579 



