In Table K sixth or sarenth yaar 1 fish 



seventh year U fish **'**•'- ^ fish 



In '^iblo 5 seventh year ..„ , 2 fish total 2 fish 



in Table 6 sixth year ».,... 1 fish 



sixth or seventh year 4. fish total 29 fish 



seventh year. «.«...« 2A fish 



in Table 7 sixth or seventh year 2 fish 



seventh year 8 fish total 10 fish 



If the above data are combined no get a total of 75 divided as follows: 



sixth year , , . . o . 3 fish 



sixth or seventh year ...,,11 fish 



seventh year, , . . . , , . , . , 59 fish 



seventh or eighth year, , . « . . . , , . 1 fish 

 e' ghth year. , „ 4 1 fish 



According to this the majority of the yellowfin taken on long lines in the 

 waters south of the Marshall s are fish in their seventh year with only a small 

 admixture of fish of older and younger year classes. 



A conparison of the yellowfin tuna inhabiting Palau waters and those vAich 

 occur south of the Waraballs shows that as far as body measurements are concerned 

 they are almost identical, and it is therefore not difficult to deduce that they 

 belong to the same stock of migratory fish. (February 7) 



On the Bfeaauremonts of Albacore and Yellowfin Tuna from Saipan Waters 



by 

 Kenzo Ike be, Technician 



[from South Sea Fishery News £Nanyo Suiaan JBho], Vol,^, No. 5. July 30, 1940 ] 



In May of this year a survey was made aboard the research vessel Zuiho 

 Maru of the albacore fishery around the northern outlying islands of Saipan. 

 The general results of the investigation have been reported elsewhere so I have 

 decided to import in this journal only on those phases having to do with the 

 size and age of albacore and yellowfin tuna, basing my remarks on the data col- 

 lected during the course of the survey. 



This survey was conducted during the period from May 5 to May 28. The 

 iarea covered was the waters around the outlying islands north of Saipan betwi 

 U4 45 • and U6° 25" east longitude and 18*^ 11' and 21° 55' north latitude. 



During the course of these investigations a total of 8 albacore and 58 yel- 

 lowfin were taken (all on long lines). The following table shows the lengths 

 and weights of these fish, the ages deduced from these measurements, and the 

 dates and positions of capture. 



It should be noted that the weights are those of eviscerated fish. 



26 



