Au: Polyspecific nature of Thunnus albacares in eastern tropical Pacific 



349 



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rr 



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 o 



co 



CO 



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rr 



LU 



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ICK) 



80 



60 



40 



20 



20 



40 



60 



80 



100 



Association With Yellowfin Tuna 



U Log-fish 

 I I School-fish 

 I I Porpoise-fish 



Off Central America 



(1163 sets) 



J r~i 



Birds Sharks Rays Billlish Bullet Black SJ "Tuna" Turtle Dolphinfish YF+SJ 



r-j-] □=! =— czxzi 



= 



4] 



Off Mexico 



(326 sets) 



Figure 2 



Percent association of 

 different "species" with 

 yellowfin tuna in fleet 

 samples. Bby = boobies, 

 Sw = shearwaters, T = 

 terns, F = frigatebirds, 

 "Tuna" = unspecified 

 tuna species, YF = 

 yellowfin tuna, SJ = 

 skipjack tuna. 



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O 



o 



CO 

 CO 



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LU 

 O 

 0C 

 LU 

 Q. 



< 



o 



o 



CO 

 CO 



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LU 



o 

 rr 



LU 

 D. 



100 

 80 

 60 

 40 

 20 

 



Association With Yellowfin Tuna 



Hi Log-fish 

 I I School-fish 

 r~l Porpoise-fish 



Off Central America 



(201 sets) 



Birds Sharks Rays Billfish Bullet Black SJ "Tuna" Turtle Dolphinfish YF+SJ 



D D 



□ 



Off Mexico 



(70 sets) 



Figure 3 



Percent association of 

 different "species" with 

 yellowfin tuna in T.M. 

 Duffy samples. Bby = 

 boobies, T = terns, Sw 

 = shearwaters, "Tuna" 

 = unspecified tuna 

 species, YF = yellowfin 

 tuna, SJ = skipjack 

 tuna. 



