1971 



1972 



1973 



1974 



1975 



1976 



1977 



1978 



-/- 



-/- 



0.00 /- 



0.00 /- 



-/- 





-/- 



-/- 



-/- 



0.00/0.00 



0.00 /0.00 



0.00 /0.00 



0.00 /- 



0.00 /O.OO 



0.00 



/O.OO 



0.00/0.00 



0.00/- 



0.00/0.00 



0.0664/0.00 



0.0074/0.00 



0.0044/0.00 



0.00 /O.OO 



0.00 



/O.OO 



0.00/0.00 



0.00/0.00 



0.00/0.00 



0.00 /0.00 



0.00 /0.00 



0.00 /O.OO 



0.00 /O.OO 



0.0014/0.00 



0.00/0.00 



0.00/0.00 



0.00/0.00 



0.00 /0.00 



0.00 /0.00 



0.00 /O.OO 



0.00 /O.OO 



0.0873/0.6451 



0.00/0.00 



0.00/0.00 



0.00/0.00 



0.00 /0.00 



0.00 /0.00 



0.00 /O.OO 



0.00 /O.OO 



0.00 



/O.OO 



0.00/0.00 



0.00/0.00 



0.00/0.00 



0.00 /0.00 



O.OO /0.00 



0.00 /O.OO 



0.00 /O.OO 



0.00 



/O.OO 



0.00/0.00 



0.00/0.00 



0.00/0.00 



0.00 /0.00 



0.00 /O.OO 



0.00 /O.OO 



0.00 /O.OO 



0.00 



/O.OO 



0.00/0.00 



0.00/0.00 



0.00/0.00 



0.0109/0.00 



0.00 /O.OO 



0.00 /O.OO 



0.0047/0.00 



0.00 



/O.OO 



0.00/0.00 



0.00/0.00 



0.00/- 



0.00 /0.00 



0.0460/0.00 



0.2364/0.00 



0.00 /O.OO 



0.00 



/O.OO 



0.00/0.00 



0.00/00.0 



0.00/0.00 



0.00 /0.00 



0.00 /O.OO 



0.00 /O.OO 



0.00 /- 



0.00 



/O.OO 



0.00/- 



0.00/- 







0.00 /O.OO 



0.0106/- 



0.00 /- 



0.00 



/O.OO 



0.00/0.00 



0.00/- 







0.00 /O.OO 



0.00 /- 



0.00 /- 



0.00 



/- 



0.00/- 



0.00/- 







0.2847/- 



0.00 /- 



0.00 1- 



0.00 



/O.OO 



0.00/0.00 



0.00/- 







-/- 



0.00 /- 



-/- 





-/- 



-/- 



0.00/- 







0.00 /- 



0.00 /- 



0.00 /- 



0.00 



/O.OO 



0.00/0.00 



0.00/- 



0.00/0.00 



0.0035/0.00 



0.0213/0.00 



0.0470/0.00 



0.0004/0.00 



0.0015/0.0056 



0.00/0.00 



0.00/0.00 



0.0000 



0.0022 



0.0155 



0.0323 



0.0003 



0.0024 



0.00 



0.00 



Bluefin tuna 















A 



0.00 /- 



0.00 /- 



-/- 



-/- 



-/- 



-/- 



B 



0.00 /O.OO 



0.00 /- 



0.00 /O.OO 



0.00 /O.OO 



0.00 /O.OO 



0.00 /O.OO 



C 



0.00 /O.OO 



0.00 /O.OO 



0.00 /O.OO 



0.00 /O.OO 



0.00 /O.OO 



0.00 /O.OO 



D 



0.00 /O.OO 



0.0226/0.00 



0.0386/0.00 



0.00 /O.OO 



0.00 /O.OO 



0.00 /O.OO 



E 



0.00 /O.OO 



0.0257/0.00 



0.3281/0.00 



0.0545/0.00 



0.00 /O.OO 



0.00 /O.OO 



F 



0.00 /O.OO 



0.6127/0.0449 



0.00 /O.OO 



0.0458/0.7258 



0.00 /O.OO 



0.00 /O.OO 



G 



0.00 /O.OO 



0.0797/0.0410 



0.0241/0.00 



0.00 /0.0021 



0.00 /O.OO 



0.00 /O.OO 



H 



0.00 /O.OO 



0.0306/0.00 



0.0279/0.00 



0.0067/0.00 



0.0072/0.00 



0.00 /O.OO 



1 



0.2667/0.00 



0.2603/0.00 



0.1228/0.00 



1 .2857/0.0396 



0.034 /O.OO 



0.00 /O.OO 



J 



0.0408/0.00 



0.7556/0.00 



0.0779/0.00 



0.7330/0.00 



0.00 /O.OO 



0.00 /O.OO 



K 



3.0506/1.2878 



1 .9407/0.00 



0.1034/- 



1 6140/0.2380 



0.14 /- 



4.145/- 



L 



1.1499/0.5319 



1.9779/- 



0.3642/- 



1. 6190/0. 00 



0.00 /O.OO 



0.328/- 



M 



2.9545/0.00 



0.00/- 



0.00 1- 



0.00 /- 



0.00 /- 



0.00 /- 



N 



2.4402/- 



5.3768/- 



0.7735/- 



1.7961/0.00 



4.44 /O.OO 



9.482/- 







-/- 



0.00/- 



-/- 



-/- 



-/- 



-/- 



P 



16.3561/ 



14.3181/- 



0.00 /O.OO 



0.2495/0.00 



0.037/0.00 



2.142/- 



Q 









-/- 



-/- 



-/- 



R 









24.7204/0.00 



-/- 



-/- 



Average 















all 















zones 



0.9462/0.0276 



0.7972/0.0202 



0.1324/0.00 



0.8766/0.0091 



0.424/- 



0.7183/0.00 



Average 















D+N 



0.6940 



0.5547 



0.0938 



0.7026 



0.2139 



0.4361 



Tunas 



Bluefin tuna.— Sightings of bluefin tuna for all years 1962 

 through 1978, are given for the areas north of the United States- 

 Mexico border (Figs. 47, 48), and for the area from San Diego 

 south into Mexico (Fig. 49). Flight log charts for areas south of the 

 border (see dotted line on Fig. 49) were not used by the program 

 until 1974. 



Figure 47 shows that the major sighting area for bluefin tuna in 

 the Santa Barbara Channel and Channel Islands area was along the 

 south side of Santa Cruz and Santa Rosa Islands, with a few sight- 

 ings made near San Nicolas Island and along the Santa Barbara 

 coast. Figure 48 shows that sightings were widely scattered west 

 and southwest of San Diego. Bluefin tuna were frequently sighted 



about San Clemente Island, and along the coasts off Oceanside and 

 Redondo Beach. In the southern area of fishing off Mexico (Fig. 

 49), sightings were more concentrated west and northwest of 

 Ensenada. Aerial spotter operations were seldom conducted south 

 of Pta. Baja, Mexico. 



Index Trends.— For the period 1973-78 day index (Table 2), the 

 index trend shows 1975 to have been the lowest in relative apparent 

 abundance (0. 13). The highest level was recorded in 1973 (0.95). 



Albacore tuna. — For albacore tuna sightings. Figure 50 gives 

 locations for all years 1962 through 1978. Figure 51, from the Cor- 

 onado Islands, Mexico, southward to Pta. Baja. indicates sightings 

 for the years 1974-78. 



11 



