tow from the surface to about 100 m, caught fish other than larvae or post larvae, 

 it sampled an estimated fish concentration of 3.4 fish per 1000 cubic meters of 

 water. All were myctophids except for a trichiurid Diplospinus multistriatus ^ 

 while 7 of the 11 myctophids were specimens of Lobianchia dolfleini . 



Four tows, two at station 8 and two at station 9 , were taken during 

 migration periods of the deep scattering layers. Since the migration and 

 environmental conditions for each tow are unique to that tow, the results from 

 each tow must be examined individually. 



Tow 8-Tl sampled the descending scattering layer from 0400 to 0737 

 hours (local) at a depth of about 103 meters (Figure 11). Gate 4 did not function 

 properly resulting in only three samples. Sample 8-Tl-B, taken in the surface 

 scattering layer, had much higher estimated fish concentrations than sample 

 8-Tl-C and D which sampled after the layer had descended (Table IV). 



TABLE IV 



ESTIMATED FISH CONCENTRATIONS IN COLLECTIONS WITH THE 6-FOOT 



IKMT AT STATIONS 8 AND 9 IN THE WESTERN ATLANTIC, 



APRIL 1967, USNS SANDS 



SAMPLE 



DEPTH 



(m) 



SAMPLING 

 TIME (MIN) 



TOTAL FISH 

 CATCH 



FISH/1000 m^ 



8-Tl-A 



100-103 



55 



47 



2.79 



8-Tl-B 



103 



55 



48 



2.85 



8-T1-C&D 



105-0 



107 



21 



0.63 



8-T3-A 



88 



30 



2 



0.22 



8-T3-B 



88-86 



36 



5 



0.46 



8-T3-C&D 



86-0 



67 



88 



4.19 



9-Tl-A 



307-363 



78 



3 



0.14 



9-Tl-B 



307-228 



12 











9-T1-C&D 



228-0 



95 



20 



0.74 



9-T2-A 



112-123 



30 



6 



0.75 



9-T2-B 



118-132 



30 



2 



0.25 



9-T2-C 



122-132 



30 



2 



0.25 



9-T2-D 



132-0 



40 



3 



0.26 



19 



