THE DEOXYRIBONUCLEIC ACID CONTENT OF THE NUCLEUS 



167 



TABLE VII 

 DNA Content (Picograms per Nucleus) of Fish Erythrocytes 



Species 



DNA (47)« (13, 14) 



Agnatha 

 Elasmobranchii 



Chondrostei 

 Holostei 

 Teleostei 

 Clupeidae 



Cyprinidae 



Percidae 



Esocidae 



Salmonidae 



Anguilidae 



Siluridae 



Scaridae 



Balistidae 

 Carangidae 



Acanthuridae 



Ostraciontidae 



Aulostomatidae 



Holocentridae 



Mugilidae-Sphy- 



raenidae 

 Sparidae 



Haemulidae 



Gerridae 

 Lutianidae 



Belonidae 

 Serranidae 



Lamprey {Petromyzon) 

 Shark (Carcharias ohscurus) 

 Shark {Carcharias longimanus) 

 Sturgeon {Acipenser sturio) 

 Bowfin (amia) 



Pilchard (Harengala Sardinia) 



Shad (Alosa) 



Carp (Cyprinus carpio) 



Barbel (Barbus barbus) 



Roach (Gardonns rutilus) 



Tench {Tinea tinea) 



Perch {Perca fluviatilis) 



Pike {Esox lucivs) 



Rainbow trout {Salmo irideus) 



Eel {Anguilla anguilla) 



Catfish {Ameiuriis nebulosus) 



Rainbow parrot {Psendoscarus guacamaia) 



Red tailed parrot {Sparisoma brachiale) 



Mudbelly {Scarus croicensis) 



Tiggerfish {Babistes capriscus) 



Bonito {Zonichthys faleatus) 



Jack {Caranx lactus) 



Round robin {Decapterus punctatus) 



Doctor fish {Acanihimis hepatus) 



Cow fish {Lactophrys gnadricornis) 



Trumpet fish {Aulostomus maculaius) 



Squirrel fish {Holocentrns ascensionis) 



Mullet {Mugil curema) 



Barracuda {Sphyraena barracuda) 



Sheepshead porgy {Calamus calamus) 



Bream {Diplodus argenteus) 



Blue striped grunt {Haemulon sciurus) 



Yellow grunt {Haemulon flavilineatum) 



Shad {Eucinostomus guba) 



Yellow tail {Ocyurus chrysurus) 



Gray snapper {Lutianus griseus) 



Silk snapper {Lutianus hastingsi) 



Hound fish {Tylosurus acus) 



Red hind {Epinephelus guttatus) 



Butterfish {Cephalopholis fulvus) 



Hamlet {Epinephelus striatus) 



Gay {Mycteraperca tigris) 



Monkej' rockfish {Trisotropis venenosus) 



5 



5.46 



6.67 



3.2 



2.3 



2.04 

 1.97 

 3.49 



1.89 



2.5 



2.45 



2.58 



1.07 



1.35 



1.21 



1.32 



1.38 



1.91 



1.39 



1.31 



1.38 



1.37 



2.24 



1.61 



1.20 



1.33 



0.94 



2.1 



2.1 



2.1 



2.2 



2.09 



1.93 



2.05 



2.2 



1.83 



3.2 

 3.4 

 1.9 

 1.7 

 1.9 

 1.7 

 4.9 

 1.9 

 1.8 



" Numbers in parentheses indicate references. 



ganian,^^ studying the DNA content of nuclei in various tissues of two 

 species of hamsters with a very different chromosome number, suggested 

 that chromosome fragmentation rather than dupHcation and polyploidy 

 was the mechanism which must be evoked to explain the chromosomal 

 evolution of these Cricetidae. 



" M. J. Moses and G. Yerganian, Records Genet. Soc. Amer. 21, 51 (1952). 

 52 P. Metais, S. Cuny, and P. Mandel, Compt. rend. soc. biol. 145, 1235 (1951). 



