LOUISIANA (Cont. ) 



An Evaluation of Commercial Gear 



The objective is to test the various types of gear available to determine 

 the most effective gear for removal of commercial, forage, and trash species. 



Statewide; began September 1955, to close September 1957; $23,207; 

 James T. Davis, Leader. 



Address inquiries to: James T. Davis, as in No. 2 above. 



MAINE 

 Department of Inland Fisheries and Garne 



1. A Study of Lake Trout in Thonnpson Lake 



This project was designed to parallel corresponding work conducted on 

 Cold Stream Pond, Enfield, Maine, to ascertain whether or not similar results 

 would be obtained. 



Lake trout are trapped and tagged, weighed, and measured on the annual 

 spawning migrations each fall. Creel census data, taken both summer and 

 winter, will provide data sufficient for population estimates and mgration 

 studies. Intensive field work on the lake will provide additional information 

 relative to food studies, age and growth, population density, and seasonal 

 depth variations due to food requirements. 



University of Maine cooperating; Androscoggin and Cumberland Counties; 

 began October 1955, to close September 1959; $1,873; Stuart E. DeRoche, 

 Leader; reports available. 



Address inquiries to: Stuart E. DeRoche, 19 Joy Street, Springvale, Maine. 



2. Socatean Stream Trout Study 



The objectives are: (1) To determine the migration dates and water temp- 

 eratures of spawning trout from Moosehead Lake. (2) To determine the migra- 

 tion dates of young trout returning to the lake. (3) To evaluate the contribu- 

 tion of the stream to the lake fishery. (4) To determine the ratio of stream resi- 

 dent trout to migrating fish. (5) To provide additional data on the success of 

 natural reproduction. A weir has been constructed and operated this year and 

 will be for three years. 



University of Maine cooperating; began July 1956, to close November 1960; 

 $3,000; Roger P. AuClair, Leader. 



Address inquiries to: Roger P. AuClair, Box 146, Rockwood, Maine. 



3. Age and Growth of Smelt in Maine Inland Waters 



The objectives are: (1) To determine if the size difference exhibited by 

 various smelt populations in inland waters are the result of variations in 

 growth rate. (2) To determine the average life span of smelt in inland 

 waters. (3) To determine age at maturity. (4) To determine if there are 

 significant differences in time and extent of spawning migrations of various 

 size and age groups. 



University of Maine cooperating; statewide; began May 1955, to close 

 May 1958; $4,500; Robert S. Rupp, Leader; reports available. 



Address inquiries to: Robert S. Rupp, Fishery Office, University of 

 Maine, Orono, Maine. 



4. Investigation of Philonemiasis in Salmonids 



The project involves a life history study of the dracunculid nematode, 

 Philonema agubernaculum Sinnon and Simon, 1936, and the pathological 

 affects upon its hosts, i.e. , the landlocked salmon (Salmo salar) and the 



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