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Articles 1 - 16 of 16
Full-Text Articles in Life Sciences
Scaled Chrysophytes From The Lake Itasca Region. Iii: Additions To The Flora, Huan M. Ngo, Daniel E. Wujek
Scaled Chrysophytes From The Lake Itasca Region. Iii: Additions To The Flora, Huan M. Ngo, Daniel E. Wujek
Journal of the Minnesota Academy of Science
Eighteen localities within Itasca State Park, Minnesota, were sampled in 1987 and examined for silica-scaled chrysophytes. Sixteen species from six genera, including seven new reports for Minnesota, were observed. Brief comments on distribution are given for several species. Recent taxonomic revisions for a number of previously reported species from the Lake Itasca region are also discussed.
Fisheries And Environmental Research By The Minnesota Sea Grant College Program, Donald C. Mcnaught
Fisheries And Environmental Research By The Minnesota Sea Grant College Program, Donald C. Mcnaught
Journal of the Minnesota Academy of Science
ABSTRACT-Minnesota's Sea Grant College Program has funded research and outreach activities since 1977. Research results combined with public education setve the citizens, government, and businesses of the state. Research on commercial and sport fisheries, aquaculture, and environmental contamination is highlighted here. This article shows Sea Grant's contributions to understanding the Lake Superior ecosystem, including its chemical, biological, and human aspects.
Fish Culture In Minnesota Farm Ponds, Meredith O. Murnyak, Dennis F. Murnyak
Fish Culture In Minnesota Farm Ponds, Meredith O. Murnyak, Dennis F. Murnyak
Journal of the Minnesota Academy of Science
This paper presents the results of a three year research and extension project in fish farming in central Minnesota. Fifty-seven farm ponds were stocked with one or more of the following species: channel catfish, largemouth bass, rainbow trout, yellow bullheads, bluegill sunfish, and black crappie. Several stocking densities with and without supplemental feeding were tested. The results indicate that when intensively managed, ponds over 0.05 hectare in size and 1 meter in depth are suitable for the production of food fish. Production of harvestable-size fish is possible during a single season when large fingerlings are stocked in early spring. Trout …
Aquaculture In Cooling Water Recirculated From A Generating Plant, John G. Woiwode, Ira R. Adelman
Aquaculture In Cooling Water Recirculated From A Generating Plant, John G. Woiwode, Ira R. Adelman
Journal of the Minnesota Academy of Science
Recirculating cooling water from an electric generating plant accumulated dissolved and suspended solids up to ten times that of the make-up water from the Mississippi River. Channel catfish (lctalurus punctatus) and tilapia (Tilapia mossambica) were grown In the cooling water, in clear well water, and in a mixture of the two for seven months as part of an investigation of the use of cooling water for commercial aquaculture. Health of both species was generally excellent in test and control waters; growth was commercially acceptable; bioaccumulation of contaminants was negligible. Organoleptic taste quality was not acceptable, although the cause of the …
Aquaculture In Recirculating Cooling Water From An Electric Generating Plant, John G. Woiwode, Ira R. Adelman
Aquaculture In Recirculating Cooling Water From An Electric Generating Plant, John G. Woiwode, Ira R. Adelman
Journal of the Minnesota Academy of Science
Recirculating cooling water from an electric generating plant accumulated dissolved and suspended solids up to ten times that of the make-up water from the Mississippi River. Channel catfish (Ictalurus punctatus) and tilapia (Tilapia mossambica) were grown in the cooling water, in clear well water, and in a mixture of the two for seven months as part of an investigation of the use of cooling water for commercial aquaculture. Health of both species was generally excellent In test and control waters; growth was commercially acceptable; bioaccumulation of contaminants was negligible. Organoleptic quality was not acceptable, although the cause of the off-flavor …
Quantitative Determination Of Trace Metals In Two Species Of Fish In The Cannon River, Robert E. Nesse, Jeff A. Elzinga
Quantitative Determination Of Trace Metals In Two Species Of Fish In The Cannon River, Robert E. Nesse, Jeff A. Elzinga
Journal of the Minnesota Academy of Science
ABSTRACT - Samples of fish were taken from three stations along the Cannon River and comparatively analyzed for concentrations of Copper and Mercury in their muscle tissue by atomic absorption spectrophotometry. Samples from different stations showed a difference in metal concentration.
Some Helminths Of Itasca Park Fishes, Omer R. Larson
Some Helminths Of Itasca Park Fishes, Omer R. Larson
Journal of the Minnesota Academy of Science
A helminth survey was conducted'. on 12 species of fish taken from the waters of Itasca State Park. An abundant and varied helminth fauna was found, with 3 l parasitic forms identified to genus or species. By taxonomic groups these included, 20 trematodes, 5 cestodes, 2 acanthocephalans, and 4 nematodes. Every fish examined was parasitized, but yellow perch and rockbass possessed the greatest variety of helminths. Based on the results of this survey, several aspects of parasite life cycles, geographic distribution, and hast specificity are discussed.
The Fish Fauna Of The Mississippi River Above St. Anthony Falls As Related To The Effectiveness Of This Falls As A Migration Barrier, Samuel Eddy, John B. Moyle, James C. Underhill
The Fish Fauna Of The Mississippi River Above St. Anthony Falls As Related To The Effectiveness Of This Falls As A Migration Barrier, Samuel Eddy, John B. Moyle, James C. Underhill
Journal of the Minnesota Academy of Science
No abstract provided.
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. …
A Preliminary Report On The Social Behavior Of The Northern Largemouth Bass Micropterus Salmoides (Lacepede) Under Experimental Conditions, Alred H. Grewe
A Preliminary Report On The Social Behavior Of The Northern Largemouth Bass Micropterus Salmoides (Lacepede) Under Experimental Conditions, Alred H. Grewe
Journal of the Minnesota Academy of Science
No abstract provided.
A Study Of A Population Of Longnose Dace, Jerome H. Kuehn
A Study Of A Population Of Longnose Dace, Jerome H. Kuehn
Journal of the Minnesota Academy of Science
No abstract provided.
Trout Foods In Gilmore Valley Creek, Winona County, Minnesota, L. George
Trout Foods In Gilmore Valley Creek, Winona County, Minnesota, L. George
Journal of the Minnesota Academy of Science
No abstract provided.
Hybridization Between Northern Pike (Esox Lucius) And Muskellunge (Esox Masquinongy), Samuel Eddy
Hybridization Between Northern Pike (Esox Lucius) And Muskellunge (Esox Masquinongy), Samuel Eddy
Journal of the Minnesota Academy of Science
No abstract provided.
How The U.S. Fish Commission Works, Franklin Benner
How The U.S. Fish Commission Works, Franklin Benner
Journal of the Minnesota Academy of Science
No abstract provided.