On the spawning-beds, It Is essential to organize the catching of stickleback, cod, Gadus 

 navaga, smelt, and sculpin, which eat the eggs and young of the White Sea herring, and also to 

 forbid the dredging of seaweeds and Zostera . 



TTie present state of the White Sea herring fishery has led some fishery workers to doubt 

 the possibility of the reconstruction of the White Sea herring Industry. 



In this connection, there have appeared In print suggestions for the raising of the product- 

 ivity of the White Sea by the Introduction into its fauna of fish from other areas /Kuznetsov (12)7 

 We consider, however, that it is possible to increase this productivity by means of the herring 

 xlso . 



As well as the Introduction of new Inhabitants into the White Sea, it is essential to concern 

 ourselves with the restoration of the herring stock. The example of the small Kandalaksha herr- 

 ing seems sufficiently conclusive. It shows that by regulating the fishery we can change the com- 

 position of the spawning population in the desired direction. 



TTils example also shows that one of the causes of the diminution of the stock of small 

 Kandalaksha herring is undoubtedly the faulty organization of the fishery . The Introduction of the 

 inderdiction of spring fishing has lessened the effect of the fishing industry and as a result the 

 reproductive ability of the small Kandalaksha herring has been able to Increase. 



Thus we see that the condition of the White Sea herring stocks is to a great extent deter- 

 mined by the organization of the fishing industry, and depends therefore to a great extent on the 

 man's activity. 



In addition to all this, the number of White Sea herring is greatly influenced by factors con- 

 nected with the development of the spawn and the survival of the young in the early stages of their 

 development . 



Therefore, the task of further research is to establish what these feictors are and to work 

 out additional measures for the re -constitution of the stocks of White Sea herring. 



Conclusions 



1) The small small-boned herring which constitute the foundation of the herring fishing in- 

 dustry In the White Sea are distinguished by several biological peculiarities, the principal of which 

 are a limited habitat, a comparatively short life-span, and low fecundity. 



2) These peculiarities show that the stocks of White Sea herring are in need of serious 

 conservation. 



The introduction of the prohibition of the fishing of the small Kandalaksha herring during 

 its spawning period protected the 1948 year class from premature catching and spread its yield 

 over a period of time. 



As a result of this prohibition, the herring spawning population increased, and the individual 

 reproduction and the reproduction of the species also Increased. 



3) The example of the small Kandalaksha herring shows that it is possible, by regulating 

 fishery, to change the composition of the spawning population in the direction we need. Therefore, 

 the prohibition of herring fishing in the spawning period should be extended to other schools of 



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