spring race, in which, after fattening-up, a rapid gonad development begins. I 



Herring near to spawning, in V and V-Vl stages, were observed by us from the end of June 

 to the middle of September. 



In 1948, males and females with nmnlng sexual products were observed in the second half 

 of July and first half of August to the north of the island. 



Summer -spawning herring, near to spawning, comprised 4% of the commercial catches. 



In 1949, a sexually mature male was found to the north-east of Grimsey Island. 



In 1950, individual specimens of herring with running sexual products, males and females, 

 were found In catches from the 12th July to 30th August to the north of the island. One must note 

 especially that, at the end of June and beginning of July, herring in maturity stage V were cau^t 

 fairly frequently, and there were relatively few spawning individuals in the following period. In 

 1951, individuals with running sexual products were noted from 27th July to 1st September. The 

 largest quantity was discovered in the region of Langanes and on 16th August to the south of 

 Reykjanes Island. 



Spawned 

 spring herring 



Spawned 

 summer herring 



June 



July 



Aug. 



Figure 1. Specific weight of herrings after spawning (VII-II stage) in Iceland waters, by 

 years and percentages . J_/ 



1/ Editor's note: The translator has used the term "specific weight" here and on the following 

 page. "Relative numbers" would be a more appropriate translation. 



168 



