MISSOURI (Cont. ) 



27. Investigation of the Natural Reproduction of Channel Catfish With Special 

 Reference to Small Impoundments 



This study was designed to determine the conditions necessary for ef- 

 fective natural reproduction of channel catfish and to devise methods for 

 creating these conditions in small impoundments. Factors influencing the 

 survival of fry are being investigated. Dates and success of spawning season 

 and the effects of water turbidity, predators, competitors and suitable escape 

 cover on survival of fry are among the factors receiving attention. A plastic 

 sheeting curtain which serves as a chemical barrier and a plastic screening 

 curtain which serves as a physical barrier are being used to divide ponds and 

 allow controlled experiments. 



August A. Busch Wildlife Area, Columbia and vicinity, and Hunnewell 

 Public fish lake; began 1952, continuing; Robert W. McVey, Leader; reports 

 available. 



Address inquiries to: Robert W. McVey, Fisheries Section, Conservation 

 Commission, 903a Elm Street, Columbia, Missouri. 



28. A Fish Tagging Program for the Large Impoundments of Missouri 



This project was designed to obtain an estimate of the annual harvest of 

 game fish in relation to the available population. Fish are netted and tagged 

 during March-June and the tags are recovered by creel census clerks, dock 

 operators, and conservation agents. 



Statewide; began 1951, continuing; Willis D. Hanson, Leader. 



Address inquiries to: Willis D. Hanson, Fisheries Section, Conservation 

 Con-innission, 903a Elm Street, Columbia, Missouri. 



29. The Use of Inorganic Fertilizers for Fish Production in Small Lakes and Ponds 



This project is designed to measure the availability of several plant 

 nutrients when added to water, and to determine the most economical and 

 efficient method of fertilization in Missouri farm ponds. The experimental ponds 

 are stocked with largemouth bass in combination with bluegills, redear or pump- 

 kinseed sunfish as a forage species. 



Statewide; began 1954, continuing; Charles R. Walker, Leader. 



Address inquiries to: Charles R. Walker, Fisheries Section, Conservation 

 Commission, 903a Elm Street, Columbia, Missouri. 



30. An Intensive Creel Census of White River and Little North Fork Arms ofBuU 

 Shoals Lake, Clearwater, Wappapello, Norfork Lakes, Lake Taneycomo, and 

 the Niangua and Glaize Arms of the Lake of the Ozarks 



The objective of these projects is to determine fishing yield, pressure, and 

 quality by seasons as an aid to fish management in these impoundments. 



Statewide; began 1949, continuing; Ralph M. Burress, Leader; reports 

 available. 



Address inquiries to: Ralph M. Burress, Fisheries Section, Conservation 

 Commssion, 903a Elm Street, Columbia, Missouri. 



31. Censusing Fish Populations in Small Sample Areas of the Large Impounded 

 Waters With Emulsifiable Rotenone 



This project is designed to obtain quantitative population data for certain 

 species and sizes of fish. These data are used in conjunction with the other 

 impoundment surveys to evaluate the status of the fish populations in Missouri's 

 big reservoirs. 



Statewide; began August 1950, continuing; Ralph M. Burres, Leader. 



Address inquiries to: Ralph M. Burress, as in 30 above. 



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