HOUDE: ABUNDANCE AND POTENTIAL YIELD OF THREAD HERRING 



IS 7308 

 Opisthonema oglinum eggs 



Hay 1973 



IS 7308 



Opisthonema 06linum larvae 



May 1973 



30° - 



28° - 



IS 7311 



Opisthonema oglinum eggs 



June - July 1973 



84° 82° 



IS 7311 



Opisthonema oglinum larvae 



June - July 1973 



80° 



28° 



26' 



24' 



30 



84° 



82° 



84° 



IS 7313 

 Opisthonema oglinum larvae 



82* 



80° 



FIGURE 5. — Distribution and abundance of thread 

 herring eggs and larvae. Catches are standardized to 

 numbers under 10 m 2 of sea surface. A, B. Cruise 

 IS7308, May 1973. C, D. Cruise IS7311, June-July 

 1973. E. Cruise IS7313, August 1973. No eggs were 

 collected on this cruise. 



80* 



499 



