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Full-Text Articles in Life Sciences
Some Aspects Of Sport-Fishing Yields From Minnesota Lakes, Warren J. Scidmore
Some Aspects Of Sport-Fishing Yields From Minnesota Lakes, Warren J. Scidmore
Journal of the Minnesota Academy of Science
The value of angling as a recreational feature is generally recognized by everyone in Minnesota. About one adult Minnesotan in three fishes, to say nothing of those younger. than 16 who need no fishing license. The impact of this sport fishing on the economy of the state is considerable. The 1.3 million resident and non-resident anglers spend some 100 million dollars annually to catch fish (Scheftel, 1958) and the annual sportfishing catch of fish from some 2 million acres of Minnesota fishing waters has been conservatively estimated at about 25 million pounds (50 million fish) (Moyle, 1958).
New Distributional Records Of Some Minnesota Fishes, Frank Nordlie, James C. Underhill, Samuel Eddy
New Distributional Records Of Some Minnesota Fishes, Frank Nordlie, James C. Underhill, Samuel Eddy
Journal of the Minnesota Academy of Science
Minnesota is almost unique in that its waters drain by three divergent courses: the Red River to the Arctic, the Great Lakes to the Gulf of St. Lawrence and the Mississippi River to the Gulf of Mexico. The close proximity of the headwaters of these several drainages present opportunities for certain species to move from one basin to another. Species restricted to the Arctic basin have their southern limits in northern and western Minnesota. Many eastern and southern species have their northern and western limits within the state. In spite of the fact that intensive collecting has been carried on …
Intra-Specific Variation In The Common Shiner, Notropis Cornutus Frontalis (Agassiz) From Minnesota And South Dakota, James C. Underhill
Intra-Specific Variation In The Common Shiner, Notropis Cornutus Frontalis (Agassiz) From Minnesota And South Dakota, James C. Underhill
Journal of the Minnesota Academy of Science
The voluminous literature relating to intra-specific variations in fishes has been reviewed by Hubbs (1934, 1940), Tanning (1952), Lindsay (1953) and others. A majority of the workers have supported the interpretation that the variation is influenced by various environmental factors, primarily the temperature during the pre-fry stages of development. Certain of the meristic characters which show such variability have been generally used in identifying various races of minnows. If such characters as the number of anal fin rays or scales in the lateral line are easily influenced by the environment, their usefulness in defining races is certainly open to question. …