Sampling Northern Pike Populations
Sampling Northern Pike Populations
This chapter describes the sampling tools used by researchers to study the northern pike populations of Minnesota. Experimental gill netting and trap netting have been the two principal techniques for sampling fish populations. The experimental gill nets and trap nets are designed to catch different sizes of fish in order to compare pike populations and to study population trends. However, both these methods have the unfortunate effect of killing fish. The chapter then examines modern methods of sampling such as tagging and radio and ultrasonic telemetry. Researchers mark fish with unique identifiers to examine northern pike migrations between water bodies and for mark-recapture experiments designed to estimate population numbers and exploitation rates. Researchers use radio and ultrasonic telemetry to monitor movements, activity patterns, and habitat use of northern pikes.
Keywords: sampling tools, northern pike, Minnesota, gill netting, trap netting, population trends, tagging, radio telemetry, ultrasonic telemetry
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