AHLSTROM: KIND AND ABUNDANCE OF FISH LARVAE 



Figure 6. — Distribution of larvae of three kinds of gonostomatids. Records of occurrence of larvae of Gonostoma 

 spp. shown as open square with dot, of Ichthyococcns irregularis as open circle with dot, and of Yarrella argenteola 

 as open triangle with dot. Small solid circles represent other stations occupied on ETP II, 



two EASTROPAC multivessel cruises. Larvae 

 were obtained in 57 collections from both ETP 

 II and equivalent ETP I; on both surveys the 

 majority of larvae were taken to the north of 

 lat 10°N, particularly on the coastward-oriented 

 portion of the station line terminating off Aca- 

 pulco, Mexico, and that terminating off Man- 

 zanillo, Mexico (Figure 5, and Ahlstrom, 1971, 

 Figure 4). Larvae of this species were taken 

 in moderate numbers, seldom more than 5 per 

 haul; the average number per haul on ETP II 

 was 0.38 larva versus 0.44 larva on equivalent 

 ETP I. 



Gonostoma sp. 



(11 occurrences, 22 larvae) 



At least two kinds of gonostomatid larvae have 

 been referred to Gonostoma, the more common 

 being larvae of G. elongatum Gunther. The dis- 

 tribution of Gonosto7na larvae on ETP II is 

 shown in Figure 6; 8 of 11 occurrences were 

 in a compact group in the southern, inshore por- 

 tion of the ETP pattern (between lat 13° and 

 15°S, offshore to long 88°W) . 



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