Number 



of 



rakers 



19.. 

 20.. 

 21.. 

 22.. 

 23.. 

 24-. 

 2S. 

 2f).. 

 27.. 

 2J!.. 

 29. 

 30. 

 31- 



Numberof flsh- 



Average. 

 Sources 



25.. 

 26.. 

 27.. 

 28.. 

 29.. 

 30.. 

 31.. 

 32.. 

 33.. 

 34.. 

 35- 



Numbcr of fish. 



Average... 



Sources 



31.. 

 32.. 

 33.. 

 34.. 

 35.. 

 36.. 

 37.. 

 38.. 

 39.. 

 40.. 

 41.. 

 42.. 

 43.. 



Number of flsti. 



Average.. 



Sources 



Table 2. — Total ininiliiT of siU rakers on the fir.'it arch in the species of Thunmts 



T. longgot 



West Indian- 

 Red Sea 



Number 



25.1 

 fi, 15, 17 



SE Asia 



Number 



21.7 

 6 



Australia 



Number 



225 



22. n 



fi, 13, 25 



T. ttllantkus 



West 

 Atlantic 



Number 



120 



21.9 



2, fi, 12, 17 



T. obesus 



West 

 .\tl3ntic 



Number 



27.3 

 6, 12 



East 

 Atlantic 



Number 



Central-West 

 Pacific 



Number 



1 



5 



27 



159 



147 



70 



23 



14 



2 



448 



2fi. ft 



3, 5, .30 



East 

 Pacific 



Number 



1 



3 

 26 

 28 

 17 

 12 



87 



27.1 

 6, 6, 8, 30 



T. alalunga 



West 

 -Atlantic 



55 

 28.3 

 fi, 12 



East 

 Atlantic 



1.58 



28.6 



fi, 10. 11 



Indian 

 Ocean 



42 



28.8 



14, 28, 29 



Central-West 

 Pacific 



fi 



45 



142 



17fi 



06 



15 



1 



481 



28.8 



5. 8, 29, 30 



East 

 Pacific 



fi4 



28.6 



5, 8, 30 



T. albaeares 



West 

 Atlantic 



127 



29.8 



fi. 12, 17 



East 

 Atlantic 



2 

 3 

 11 



51 



88 



12fi 



80 



23 



7 



1 



392 



30.8 



fi, 11, 23 



West Indian 

 Ocean 



171 



29.5 



fi, 19, 28 



Central- West 

 Pacific 



1 

 3 

 24 



■3 



194 



242 



202 



93 



21 



2 



855 



30.0 



5, 8, 21, 22,30 



East 

 Piwific 



2 

 8 

 20 

 50 

 61 

 24 



161 



30.5 



.5, 8, 20, .30 



T. maecoyii 



South Africa 



13 



33.5 



26 



Australia 



331 



33.7 



1, 5, fi, 9, 24 



T. t. orienlalis 



Central-West 

 Pacific 



13 

 3fi. 4 

 5, 



Ea.st 

 Pacific 



45 



35.8 



fi, 9, 12 



T. t. Ihynnus 



West 

 Atlantic 



38.8 

 6. 7, 9, 12 



East Atlantic- 

 South Africa 



4 



8 



40 



88 



105 



74 



3« 



7 



4 



3fi6 



38.9 



, 18, 26, 27 



— Gibba and Collette. original data; 



Source : 



1_ Abe 19.5.'-): 2— Beebe and Tee-Van. 1936; 3— Brock. 1949; 4— Crane, 1936; 5— Dung and Royc_e 1953; ., , r.^,.. ,„ M„,i,prinR4- 

 7-C,f„8burK 19.^3; 8-Oodsil and Hyers. 1944; 9-Godsil and Holmberg 19.50; ip---I,etaconn„ux, 19ol; >1-Marrhal, 19.^9 '2^^a h^J. \f^: 

 l-t_Miinrn l9-)7- 14— Postel et al I960; 15— Ranade, 1961 ; 16— Rivas. l«o4b; 17— Rivas, 1961 . 18- Kobins. lya; . i.) no.vti, i.'".) 

 lt.sJhaefer 948- 21-Schaefer 19.52° 22-.'<chaefer. 19.55; 23-Schaefer and Walford, 19.W; 24-.Serventy. 19n6a; aS-Serventy, 19..6b; 

 26^Taibot! i964; 27-Tiews, 1963; 28— WUliams, 1964; 29-Yosllida and Otau, 1963; :J0-Japan luihery Agency, 1904. 



tudc among population.s in both the means (Atlantic 

 38.9, Pacific 35.9, T. maccmjii 33.7) and the motlos 

 (39, 35, 34). These differences and others can he 



92 



used to separate the two subspecies, T. thijnnus 

 Ihi/nnus in the Atlantic and T. thijnnus orienlalis in 

 tiic Pacific, and T. mncvoyii in the southern Pacific 



U.S. FISH AND wn,l)LIFK SKRVICE 



