. Commercial fisheries review. Fisheries; Fish trade. LIFE EXPECTANCY" ^ 15 YEARS YEAR S GROWTH CATFISH CAN BE: AGED BY TAKING SECT IONS OF THE FIN SPINES OR BACK- BONE AND MICROSCOPICAL- LY EXAMINING THEM. OUTER EDGE 2nd ANNULUS OR YEAR MARK Isl ANNULUS THESE BLUEGIllS ARE THE SAME AGE THE TOP ONE WAS TAKEN FROM A WELL- MANAGED POPULATION. THE LOWER ONE FROM AN OVER CROWDED FARM POND. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the o
. Commercial fisheries review. Fisheries; Fish trade. LIFE EXPECTANCY" ^ 15 YEARS YEAR S GROWTH CATFISH CAN BE: AGED BY TAKING SECT IONS OF THE FIN SPINES OR BACK- BONE AND MICROSCOPICAL- LY EXAMINING THEM. OUTER EDGE 2nd ANNULUS OR YEAR MARK Isl ANNULUS THESE BLUEGIllS ARE THE SAME AGE THE TOP ONE WAS TAKEN FROM A WELL- MANAGED POPULATION. THE LOWER ONE FROM AN OVER CROWDED FARM POND. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. National Marine Fisheries Service; U. S. Fish and Wildlife Service; United States. Bureau of Commericial Fisheries. [Washington] : National Marine Fisheries Service; [for sale by the Supt. of Docs. , U. S. Govt. Print. Off. ]
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License: Licensed
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Keywords: ., book, bookcentury1900, booksubjectfisheries, booksubjectfishtrade
