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Full-Text Articles in Life Sciences

A Preliminary Study Of The Distribution Of Fleas In Utah Known To Be Capable And Potential Vectors Of Plague, Dorald M. Allred Jun 1951

A Preliminary Study Of The Distribution Of Fleas In Utah Known To Be Capable And Potential Vectors Of Plague, Dorald M. Allred

Theses and Dissertations

Plague outbreaks in the past have been disastrous where domestic rats and their fleas of certain species were common. Plague has been known to occur in most parts of the world (Robertson 1923), and has occurred as human epidemics for many centuries (Dubos 1948).


Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook May 1951

Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook

All Graduate Theses and Dissertations

The study of the Utah sculpin in Logan River was based on 801 specimens collected during 1949 to March 1951. Numbers of fish examined for various catagories of the study wares length-frequency, 495; aging by vertebrae, 407; length-weight relationship, 601; and food habits, 275.

Fish were collected by use of an electric shocking machine generating 600 watts and 220 volts. Numbers of fish occurred as high as 150 per tenth mile of stream. Preferred habitats occurred in areas of coarse gravel and small rocks.

Vertebrae dissected from the fish were used in age determination. Length-frequency proved to be a general ...


The Food Of Pond Fish In Northern Utah, Robert L. Eberhardt May 1951

The Food Of Pond Fish In Northern Utah, Robert L. Eberhardt

All Graduate Theses and Dissertations

A series of ponds in northern Utah supplied mainly by artesian water was poisoned with rotenone during 1949-1950.


An Ecological Survey Of The Muskrat At Locomotive Springs, Box Elder County, Utah, 1950-51, Robert A. Mccullough May 1951

An Ecological Survey Of The Muskrat At Locomotive Springs, Box Elder County, Utah, 1950-51, Robert A. Mccullough

All Graduate Theses and Dissertations

The Locomotive Springs Migratory Waterfowl Refuge, located on the north shore of Great Salt Lake, Utah, is a state-owned area of about 12,000 acres. Six springs arise from the desert floor and flow south and south-east toward Great Salt Lake. The refuge encompasses these springs and their outflows. The area, while predominately vegetated by the Sarcobatus-Atriplex type, has 1,200 acres of open water and about 2,560 acres of marsh and stream-channel edges. The area was purchased by the State of Utah in 1934 with the express purpose of providing waterfowl hunting for the general public who could ...


Age And Growth Of The Brown Trout Salmo Trutta Fario Linnaeus In Logan River, Utah, William Sigler May 1951

Age And Growth Of The Brown Trout Salmo Trutta Fario Linnaeus In Logan River, Utah, William Sigler

All Graduate Theses and Dissertations

The Logan River flowing southwesterly through the mountains of Cache County, Utah is comparatively cold to the mouth of Logan Canyon. The stream is characterized by steep gradient, a high velocity and relatively few pools. A total of 1053 brown trout were examined during the course of this study; 286 were retained for age and growth determinations. The body scale relationship is L : 40.46 mm. + 0.4l85R + 0.01908R^2 where L equals standard length in millimeters and R equals scale radius times 80.