FISHEKY BULLETIN: VOL. 73, NO. 1 



2n NORTHERN MID -ATL ANTIC 



I - 



ui 

 o 



< 

 o 

 z 



CD 



< 



X 



UJ 



a 



2 



"—19 10 6 7 3 I 



GEORGES 



5 

 3 



BANK 





7 GULF OF MAINE 



2 -I 



I - 



U 5 



2.19 I 



NOVA SCOTIAN SHELF 



fl4 



10 



15 



20 C 



10 



15 



20 C 



TEMPERATURE 



Figure 22. — Index of abundance (geometric mean) of Raja radiata captured in each subarea during autumn 1969 within 

 temperature intervals of TC. See Figure 3 for explanation of fractions and whole numbers. 



Laboratory, NMFS, NO A A for his cooperation 

 during all phases of this study. John B. Colton, 

 Jr., also of the Northeast Fisheries Center Woods 

 Hole Laboratory, NMFS, NOAA supervised 

 the construction of the isotherm charts. The 

 following VIMS staff members and students 

 contributed greatly to this study: Mark E. Chit- 

 tenden and George C. Grant reviewed the manu- 

 script; Russel L. Bradley and Kay Stubblefield 

 did the drafting; Ken Thornberry did the photo- 

 graphic work; and Charles Wenner, Linda Mercer, 

 Ken Able, Doug Markle, and Jim Weaver assisted 

 with data collection. 



LITERATURE CITED 



Backus, R. H. 



1957. The fishes of Labrador. Bull. Am. Mus. Nat. Hist. 

 113(4):279-337. 



BiGELOW, H. B. 



1927. Physical oceanography of the Gulf of Maine. 



U.S. Bur. Fish., Bull. 40:511-1027. 

 1933. Studies of the waters on the continental shelf, 



Cape Cod to Chesapeake Bay. I. The cycle of temperature. 



Pap. Phys. Oceanogr. Meteorol., Mass. Inst. Technol. 



and Woods Hole Oceanogr. Inst. 2(4), 135 p. 



BlGELOW, H. B., AND W. C. SCHROEDER. 



1953. Fishes of the western North Atlantic. Part 2. 

 Sawfishes, guitarfishes, skates and rays [and] chimae- 

 roids. Mem. Sears Found. Mar. Res., Yale Univ. 1, 588 p. 



134 



