Auth et al.: Diel variation in vertical distribution of an offshore ichthyoplankton community 



317 



(10-20 and 20-50 m, respectively) in the same haul 

 (HH-05A). 



Fish egg concentrations varied across depth-strati- 

 fied and diel scales (Table 2). However, depth stratum 

 was the only significant factor explaining variation in 

 C. macouni, I. lockingtoni, and total egg densities in 

 the type-II ANOVA model (P<0.05). Almost 91% of the 



total egg abundance was found in the upper 100 m of 

 the water column. Egg densities were generally highest 

 near the surface and decreased with depth. There were 

 no S. sagax, C. macouni, or /. lockingtoni eggs found at 

 depths >100 m. 



Mean total water-column concentrations were greater 

 during the day than at night for S. sagax (5.99/1000 m-^ 



