FISHERY BULLETIN: VOL. 85, NO. 3 



KODIAK 

 ISLAND 



- 57 OON 



- 56 OON 



SAMPLING ACTIVITIES 



(Station numbers to right 



of activity symbols) 

 -f- 60 cm bongo, neuston. XBT 

 ^ 60 cm bongo, neuston, CTD 

 ^ 60 cm bongo, neuston, XBT 



otolith analysis 

 B Vertical/diel stations 



60 cm bongo, neuston, XBT, 



series of 20 cm bongos. Tucker trawls 



LARVAL POLLOCK ABUNDANCE 

 Number/10 m' 



0-100 

 100-1000 

 1000 



55 OON 



159 OOW 



158 OOW 



157 OOW 



156 OOW 



155 OOW 



154 OOW 



Figure 2. — Distribution, abundance (numbers per 10 m2) and lengths of walleye pollock larvae from 60 cm MARMAP bongo tows 

 superimposed on sampling pattern used in the northern Gulf of Alaska, May 1983. Hydrographic sections are labelled A, B, C (see 

 Figure 4). 



Laboratory Procedures 



Fish eggs and larvae were identified to the low- 

 est taxon possible at the Polish Plankton Sorting 

 Center in Szczecin, Poland. Fish larvae were 

 measured to the nearst 0.1 mm standard length 

 (SL); when more than 50 larvae of a taxon C':- 

 curred in a sample, a random subsample of 50 was 

 selected for measurement. Identifications were 

 verified at the Northwest and Alaska Fisheries 



Center. For distributional analysis of fish eggs 

 and larvae from the survey, numbers per tow for 

 each taxon were converted to numbers under 10 

 m^ of water surface using volumes of water fil- 

 tered and maximum tow depth (see Smith and 

 Richardson 1977). To compare relative abun- 

 dances of various taxa, an estimate of the total 

 number of eggs or larvae of each taxon present in 

 the entire survey area was derived by summing 

 the catches at each station and multiplying by the 



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