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ABSTRACT Angling catch data was gathered by a postal questionnaire system from angling clubs holding competitions in three sections of the River Severn over a period of 3 years (1975–78). Angling success was measured as the percentage of anglers taking part that caught fish and as the overall...
ABSTRACT The methods adopted for a tag‐recapture study on the carp population in a South Lancashire lake are described. Fifty‐three percent of carp tagged were recaptured on at least one occasion. Catch frequency data from angling were not observed to deviate significantly from Poisson...
ABSTRACT Freeze‐branding of young trout with metal stamps dipped in liquid nitrogen was investigated for use in experimental work. Good results were obtained when the procedure was standardized as follows: stamp cooled for 30 sec, applied for 4 sec with a pressure of 20–30g. Certain letters were...
ABSTRACT The design and use of large buoyant seine‐type nets for sampling coarse fish fry are described. These nets have been used over 2 years to take a total of ninety 100 m3 and 200 m3 quantitative samples from the shallow littoral region of an artificial storage reservoir. The performance of...
Book reviews in this article: Tilapia ‐ a guide to their biology and culture in Africa. JOHN DOMINIC BALARIN assisted by JOHN P. HATTON. A key to the nymphs of the British species of Ephemeroptera with notes on their ecology. T. T. MACAN. Aquaculture. P.J. REAY.
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