SPECIES SUMMARY 



Larvae of northern anchovy (Engraulis mordax) represented 

 48.6% of all fish larvae taken on CalCOFI cruises during 1966 and 

 numbered approximately four times as many as the gonostomatid 

 Vinciguerria lucetia , the next most abundant species with 12.6% 

 of the total larvae (Tables 2, 3). Northern anchovy ranked 

 second in incidence; V. lucetia ranked third. The next most 

 abundant species was Pacific hake, Merluccius productus , with 

 7.8% of total larvae; it ranked 16th in occurrence. The 

 myctophid Triphoturus mexicanus ranked fourth in abundance, but 

 ranked first in occurrence. Rockf ish larvae, Sebastes spp. , a 

 composite of about 70 species, ranked 5th in abundance and 4th in 

 incidence. Another myctophid, Stenobrachius leucopsarus , ranked 

 6th in abundance but 14th in incidence. Larvae of jack mackerel 

 (Trachurus symmetricus) , the deepsea smelt Leuroglossus stilbius , 

 the sardine Sardinops sagax and the sanddabs (Citharichthys spp.) 

 completed the ten most abundant taxa ranking 7th, 8th, 9th, and 

 10th, respectively; however, only T. symmetricus and 

 Citharichthys spp. ranked in the top ten in occurrence, ranking 

 10th and 7th, respectively. The remaining two taxa, L. stilbius 

 and S. sagax, ranked 13th and 36th, respectively, in incidence. 

 These 10 top-ranking taxa contributed 87.4% of all larvae taken 

 during 1966. The remaining 12.6% was represented by 144 taxa 

 plus the unidentified and disintegrated categories. Of the 10 

 taxa, 4 were midwater species, 3 were coastal demersal species or 

 generic groupings, and 3 were coastal pelagic species. 



EXPLANATION OF TABLES 



Table 1 - This table lists by cruise the pertinent station and 

 tow data for 1966, the volume of water filtered and 

 standard haul factor for each tow, the percent of 

 sample sorted, and the total numbers of fish eggs and 

 larvae. CalCOFI cruises are designated by four digits; 

 the first two indicate the year and the second two the 

 month. Within each cruise the data are listed in order 

 of increasing line and station number (southerly and 

 seaward directions) ; the order of station occupancy is 

 shown on the station charts (Figures 2-12) . Stations 

 are designated by two groups of digits; the first set 

 indicates the line and decimal fraction and the second 

 set indicates the station on the line. Time is listed 

 as Pacific Standard Time at the start of each tow in 

 24-hour designation. Methods for determining tow 

 depth, volume of water strained, standard haul factor, 

 and percent sorted were described in the methods 

 section. The values for total fish eggs and larvae 

 represent raw counts (unadjusted for percent sorted or 

 standard haul factor) . Ship codes are as follows: AL, 

 Alaska; AX, Alexander Agassiz; JD, David Starr Jordan. 



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