600 



ONTOGENY AND SYSTEMATICS OF FISHES-AHLSTROM SYMPOSIUM 



Table 154. Number of Total First Arch Gillrakers and Number of Vertebrae in the Genera of Scombroidei. 



Family and genus 



Number of 

 species 



Total number of gillrakers 

 on first arch 



Number of vertebrae 



4-5 



1.(6-8)* 



1,(2-4)*** 

 4,(13, 14)*** 



1.(4-9)*** 

 1.(10)*** 



1.(0-5)*** 



1.(0)*** 



1.(5,6)*** 



28 

 Present 



10-16 

 15-18 



10-22 



Absent, small teeth found 

 on epibranchial in one 

 juvenile. 



Rakers modified to nu- 

 merous toothpatches in 

 Istiophoridae. 





 29-51 

 33-66 

 14-24 



1-27 







12-17 



12-15 



11-14 



8-27 

 72-80 

 36-47 

 29-47 

 51-63 

 19-43 



13 



15, 16 



17 



10, 11 



30 



26 



24 

 24 

 24 



43,44 



31 



31 



31 

 41-56 

 62-64 

 37-39 

 47,48 



38 

 43-55 



39 



39 

 37-39 



41 



39 



• From Matsubara and Iwai (1958). 

 •• Vertebral counts mostly from PotihofTs unpublished data, 

 *•• Numbers m parentheses are large spmes emerging from toothpatches. The number one outside parentheses represents a large raker in the epi-ceratobranchial angle. Numerous toothpatches 

 are present. Dunng ontogeny gillrakers transform to toothpatches. 



