hake, jack mackerel, and Pacific mackerel; total number of fish 

 eggs; and total number of fish larvae. 



Discrepancies in ichthyoplankton data in these two files 

 were corrected by inspecting original records from the sorting 

 laboratory, the original ichthyoplankton identification sheets, 

 and the samples themselves. Station and tow data discrepancies 

 between the two files were corrected by reviewing ships' logs and 

 deck tow sheets, original records from the sorting laboratory, 

 cruise announcements, publications, header information on the 

 ichthyoplankton identification sheets, and station plots 

 generated for each cruise. Eventually all station and tow data 

 were checked by comparing these sources. 



The corrected ichthyoplankton data base was then examined 

 statistically and outliers were found and checked as above. 

 Distributional plots were then prepared for each taxon and these 

 were checked by reviewing the data sources mentioned above and by 

 examining archived specimens. A listing of each taxon by station 

 (Table 4) was produced, which became the primary document for 

 subsequent checks. Misidentif ications found in geographic 

 outlier checks and other misidentif ications and data problems 

 discovered in the course of examining archived samples resulted 

 in several iterations of Table 4. Finally, totals in Table 4 

 were checked against annual summaries of incidence and abundance 

 (Tables 2 and 3). Ecological analyses of the data (Moser et al., 

 1987) were conducted concurrently with editing procedures and 

 provided cross-checks that allowed correction of errors. 



SPECIES SUMMARY 



Larvae of northern anchovy (Engraulis mordax) represented 

 44% of all fish larvae taken on CalCOFI cruises during 1959 and 

 ranked third in number of occurrences (Tables 2, 3). The second 

 most numerous species was the gonostomatid Vinciguerria lucetia , 

 with 2 5% and the third was the myctophid Triphoturus mexicanus , 

 with 7.2%; these species ranked first and second in occurrences. 

 The first three species in both rankings accounted for more than 

 76% of all fish larvae collected in 1959. Pacific hake ranked 

 4th in numbers (3.8%) and 11th in occurrences; rockfish, Sebastes 

 spp. , ranked 5th in both number (2.4%) and occurrences. A 

 deepsea smelt, Leuroglossus stilbius , ranked 6th in number and 

 13th in occurrences and three lanternf ishes, Stenobrachius 

 leucopsarus, Diogenichthys laternatus , and Ceratoscopelus 

 townsendi ranked 7th, 8th, and 10th in numbers. The sardine, 

 Sardinops sagax , ranked 9th (1.1% of larvae) but was 23rd in 

 occurrences. Jack mackerel, Trachurus symmetricus , ranked 11th 

 in numbers and 14th in occurrence. The 10 top-ranking taxa 

 contributed 90% of all larvae taken during 1959; the remaining 

 10% was represented by 143 taxa plus the unidentified and 

 disintegrated categories. Of the 10 most abundant taxa in 1959, 

 2 were coastal demersal species or genera, 6 were midwater 

 species, and 2 were coastal pelagic species. 



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