82 DEPARTMENT OP FISH AND GAME 



Yellowfm 



The work of the M. V. Yellowpin was devoted chiefly to the sardine 

 investigations. She took part in some of the routine oceanographic cruises 

 of the California Cooperative Sardine Research Program when detailed 

 physical, chemical, and biological oceanographic data were collected. 

 The remainder of her time was used in assessing the abundance of fish 

 populations, chiefly sardine, off the coast of California and Baja Cali- 

 fornia and in measuring environmental conditions where fish are found. 

 Cruises made during the biennium were : 



Date Locality Investigation 



50-Y-7 



July 18-Aug. 4, 1950 Central Baja California Assess sardine abundance 



50-Y-8 



Aug. 14-24, 1950— ..Northern Baja California.. Same as 50-Y-7 



50-Y-9 



Sept. 5-22, 1950- ..Southern California-- —Same as 50-Y-7 



50-Y-10 



Oct. 2-9, 1950- —Central California.. ..Same as 50-Y-7 



50-Y-ll 



Nov. 8-22, 1950— —Southern California- ..Measure environmental condi- 

 tions where sardines were 

 found ; food studies of jack 

 mackerel and tag kelp and sand 

 bass 



50-Y-12 



Dec. 1-15, 1950— —Central California- ..Measure abundance of sardine 



population and environmental 

 conditions and food studies of 

 sardine and jack mackerel 



51-Y-l 



Jan. 9-19, 1951_. —Southern California _. Same as 50-Y-12 



51-Y-2 



Jan. 29-Feb. 10, 1951— Southern California- -Same as 50-Y-12 



51-Y-3 



Fob. 26-Mar. 9, 1951— Southern California.. Same as 50-Y-12 



51-Y-4 



Mar. 26-Apr. 13, 1951_Baja California.. _ Same as 50-Y-12 



51-Y-5 



Apr. 29-May 13, 1951 Baja California.- Sardine fecundity studies and 



collect oceanographic data on 

 inshore waters not covered by 

 routine cruises 

 51-Y-6 



May 25-June 11, 1951 Southern California and 



northern Baja California Occupy stations in routine ocean- 

 ographic cruise 

 51-Y-7 



Aug. 7-13, 1951 Southern California.- Measure environmental condi- 

 tions and sardine and jack 

 mackerel food studies 

 51-Y-8 



Aug. 20-Sept. 12, 1951_Central Baja California — Assess sardine abundance 



51-Y-9 



Sept. 23-Oct. 12, 1951 Northern Baja California 



and Southern California Same as 51-Y-8 



51-Y-10 



Oct. 19-Nov. 8, 1951__.Southern and Central 



California Same as 51-Y-S 



