SMITH ET AL: DIEL MOVEMENTS OF LARVAL FLOUNDER 

 Table 2.— Continued. 



morning, noon, evening, and midnight, off Fire 

 Island to investigate the vertical distribution of 

 eggs and larvae. Royce et al. (1959) included a 

 cursory presentation of data on yellowtail flounder 

 larvae from Sette's series of discrete depth tows. 

 Although Sette's nets were towed slower (1 kn vs. 

 5 kn) and the flounder larvae were smaller ix = 3.9 

 mm vs. X = 6.7 mm) than ours, the results of the 

 two studies are similar in several aspects. For 



example, Royce et al. (1959) reported larvae at the 

 surface at night, but not during daylight; the night 

 catch was double the daytime catch; and the catch 

 dropped off sharply in their deep net at night. 

 Their larvae were most concentrated at a depth of 

 10 m on all four tows. Although this appears to 

 differ from our results, we have shown that larvae 

 <4 mm do not participate in the diel migrations 

 but remain within a limited depth stratum. Thus 



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