

Figure 13. Blood from Murmansk herring, a- a lymphocyte in the center, b- a monocyte 

 right, B- a polymorpho -nuclear lymphocyte. 



In this period, the remains from the spawning, empty follicles and eggs which were not 

 spawned, are resorbed in the ovary. The increasing quantity of monocytes and polymorpho -nuclear 

 leucocytes in the blood during this period is evidently caused by their acting as phagocytes during 

 the process of regeneration of the gonads. 



TABLE 12. MEAN QUANTITY OF HEMOGLOBIN AND BLOOD CELLS OF 

 MURMANSK HERRING (IN %) . 



244 



