April 1951 CCHHEHCIAL FISHERIES REVIEW 37 



scarring of fish stocks. Personnel conducted experiments also in aquaria and tanks 

 on feeding habits of sea lampreys and studies on specific effects of lamprey attacks 

 on prey species. 



Arrangements have been canpleted with the Indiana and Wisconsin Conservation 

 Departments for operation of weirs and traps in those States during the coming 

 spavming-run season. Indiana will operate one sea-lamprey weir and trap and Wis- 

 consin will operate six devices in cooperation with the Fish and Wildlife Service. 



At Marquette, a Service representative periodically inspected the Burkey elec- 

 tric screen and removed the capacitator to the laboratory for winter storage. 



The staff have prepared reparte on the 1950 sea lamprey control operations and 

 tagging experiments, and on the 1950 survey of spawning streams in the Lake Superior 

 basin. Having examined the 1949 and 1950 samples of migrant sea lampreys for dis- 

 ease and parasites f they are preparing a report on their findings . They are ana- 

 lyzing data on two downstream runs (1949-1950 and 1950-1951) of recently transformed 

 sea lampreys taken in the Carp Lake River. 



Gulf Exploratory Fishery Program 



" OREGON " TO CONTINUE CK00VED-3HRIMP EXFLORATKaiS ; In order to continue explo- 

 rations for ccmmercial concentrations of grooved shrimp, the Service's Gulf explor- 

 atory fishing vessel Oregon left Pascagoula February 14 on Cruise No. 7. 



On this cruise the vessel will be concerned with the area between Pascagoula 

 and Tampa Bay. Four trawls at lO-f athom intervals will be made off the Mississippi 

 coast through the area now being fished by the canmercial fleet. However, empiiasis 

 will be placed on the area between Panama City and Tampa in depths between 10 and 

 250 fathoms. 



If suitable bottom can be found, a series of fish-trawl drags will be made in 

 depths over 100 fathoms, and additional work will be carried out on the concentra- 

 tions of deep-water shrimp. Continued testing of the two types of bottomless trawls 

 will be carried out in areas not suitable for conventional trawling. 



The vessel is scheduled to complete this cruise on March 2. 



Gulf States Marine Fisheries Commission Meets 



A regular meeting of the Gulf States Marine Fisheries Commission was held on 

 January 11-12, 1951, at Brownsville, Texas. The meeting was mainly devoted to dis- 

 cussions of the plans of the Defense Fisheries Administration of the Department of 

 the Interior; defense fisheries programs; the application of technology to a further- 

 ance of the defense effort; shrimp regulations and uniform interstate regulations 

 for the Gulf States ; reciprocal fishing agreements ; and shrimp imports . 



Several resolutions were adopted at the meeting. These were the most important 

 ones : 



