TABLE 23.— Catch per unit of G\J.f shrimp trawl effort by depth for 

 Pandalopsis dispar taken In the Shumagln Islands - 

 Alaska Peninsula area, 1957 



INTERAREA DISTRIBUTION AND 

 RELATIVE ABUNDANCE 



P. jordani was taken from off the Coquille 

 River, Oreg., to Glacier Bay in Southeastern 

 Alaska at depths ranging from 20 to 247 

 fathoms. Highest catch rates occurred off 

 the Oregon and Washington coasts where the 

 species was commonly taken in depths 60 

 to 100 fathoms. Highest availability of Panda- 

 lus jordani was found to occur in somewhat 

 deeper water off Oregon than off Washington 

 (fig. 6). P. jordani also comprises the bulk of 

 the catch taken in the California offshore 

 shrimp fisheries. Apparently this species is 

 abundant in waters from about central Cali- 

 fornia to at least Cape Beale, Vancouver 

 Island, but it was not taken in significant 

 concentrations in the waters of Southeastern 

 or central Alaska. Throughout the region, 

 concentrations of P. jordani generally occur 

 where green (glauconite mud) mud is the 

 dominant bottom type. 



P. borealis was captured from Southeastern 

 Alaska west to the Alaskan Peninsula at depths 

 from 1 1 to 233 fathoms. It was by far the 

 most abundant species throughout these waters. 

 Highest catch rates occurred in the central 

 Alaskan and Alaska Peninsula areas (fig. 7). In 



^M AVERAGE CATCH 

 Q UNITS OF EFFORT 



OREGON 



WASHINGTON 



SO 

 40 



20 a: 

 o 



o 

 to 



UJ 



m 



-ISO z 



< so 90-S9 60-«9 70-79 aO-»9 90-99KXH09 > 109 



DEPTH (FATHOMS) 



Figure 6.- -Average catch in pounds per 30 minutes 

 fished, by depth, for Pandalus jordani. 



22 



