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Articles 5731 - 5760 of 5818
Full-Text Articles in Ecology and Evolutionary Biology
Look After The Tail Enders, B R. Beetson
Look After The Tail Enders, B R. Beetson
Journal of the Department of Agriculture, Western Australia, Series 4
IN Department of Agriculture drought feeding trials last summer, shy feeders lost weight and died while the bigger sheep grew fat. When drafted off and fed separately the shy feeders ate their share and survived the summer.
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: Staff Research Publications
Ecological studies on the distribution of fairy shrimps have been made from 246 sites in the sandhills region of Nebraska. New records for Nebraska have been established for Artemia salina, Branchinecta campestris, B. lindahli, B. mackini and Cyzicus mexicanus. Seasonal populations of shrimp have been located in habitats containing permanent fish populations. Water mineralization was the dominant environmental condition related to the distribution of phyllopods with sodium and potassium compounds predominating in the strongly alkaline lakes. Several of the Artemia lakes were classified as hydroxide sites. Many of the alkaline ponds, where B. lindahli and B. campestris flourish, are …
Observation On The Impact Of Certain Insecticides On Spider Populations In A Cotton Field, Peggy Rae Dorris
Observation On The Impact Of Certain Insecticides On Spider Populations In A Cotton Field, Peggy Rae Dorris
Journal of the Arkansas Academy of Science
No abstract provided.
Age And Growth Of The Blue Catfish, Ictalurus Furcatus, In The Arkansas River, D. Leroy Gray
Age And Growth Of The Blue Catfish, Ictalurus Furcatus, In The Arkansas River, D. Leroy Gray
Journal of the Arkansas Academy of Science
No abstract provided.
Effect Of Domestic Effluent On Two Spring Surveys Of Fishes In Lost Creek, Craighead County, Arkansas, John K. Beadles
Effect Of Domestic Effluent On Two Spring Surveys Of Fishes In Lost Creek, Craighead County, Arkansas, John K. Beadles
Journal of the Arkansas Academy of Science
Lost Creek is representative of deltonic streams of the St. Francis Basin possessing characteristics of being turbid. It has a low flow velocity except during the annual spring rains. Lost Creek meanders approximately 18 km. before receiving effluents and empties into Big Creek approximately 4 km. west of Jonesboro, Arkansas. Five collecting stations were studied in 1966 while six stations were sampled in 1970. Some fishes have been found to tolerate moderate amounts of domestic effluents and it is probable that the two species Lepomis cyanellus and Ictalurus melas, collected within the effluents, were more resistant than the other species …
Subalpine Cover Ecology Of Eutamias Amoenus, Eutamias Townsendii And Other Small Mammals In Huckleberry Park, Mount Rainier National Park, Don H. Meredith
Subalpine Cover Ecology Of Eutamias Amoenus, Eutamias Townsendii And Other Small Mammals In Huckleberry Park, Mount Rainier National Park, Don H. Meredith
All Master's Theses
Little work has been done on the ecology of alpine and subalpine small mammals. They are included in faunal surveys, but little is known of their habits. In the summer of 1969 this study was undertaken in subalpine Huckleberry Park, Mount Rainier National Park, to determine the species of small mammals in the area and some of their relationships with the environment and each other. The relationships between E. amoenus and E. townsendii were of special interest.
Chiropteran Systematics, J. Knox Jones Jr., Hugh H. Genoways
Chiropteran Systematics, J. Knox Jones Jr., Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Provides an overview of the field of chiropteran systematics in a way that will introduce the non-chiropterologist to the subject. By way of example, we have alluded to several aspects of taxonomic research at different levels in the hierarchy. Recourse to the publications cited at the appropriate places in the text will amplify our remarks and provide a solid background in the current work of the discipline.
Basically, taxonomic characters are where the taxonomist finds them; some, but not all, will prove useful also in elucidating relationships and evolutionary descent of taxa. Much remains to be done in these areas, …
Survey Of The Helminth Parasites Of Selected Game Fishes Of Lake Fort Smith, Arkansas, David A. Becker, Walter C. Houghton
Survey Of The Helminth Parasites Of Selected Game Fishes Of Lake Fort Smith, Arkansas, David A. Becker, Walter C. Houghton
Journal of the Arkansas Academy of Science
No abstract provided.
Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration
Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration
Publications (WR)
This report fulfills the request of the Colorado River Basin Project, Denver, Colorado, to determine the effects of municipal and industrial wastes on the aquatic life in selected waters of the Colorado River Basin. These studies were conducted with the assistance of personnel from the Colorado River Basin Project.
Three Physical Measurements Of Male White-Tailed Deer In West Virginia Correlated With Soil Fertility And Population Density, Charles C. Coffman
Three Physical Measurements Of Male White-Tailed Deer In West Virginia Correlated With Soil Fertility And Population Density, Charles C. Coffman
Theses, Dissertations and Capstones
Differences in the physical size of male white-tailed deer from varying parts of West Virginia were known to exist a considerable number of years before any sophisticated attempts were made to explain them. Prior to 1940, the state's deer herd had been making a slow, but increasingly steady, comeback from a period of extreme scarcity around the turn of the century. To supplement the original remaining stock, shown in Figure 1, page 2, a deer restocking program was initiated in 1923. In 1937, federal legislation, in the form of the Federal Aid to Wildlife Restoration Act, gave added support to …
The Role Of Adventitious Reinforcement In Operant Discrimination, Alan Kamil, John W. Davenport
The Role Of Adventitious Reinforcement In Operant Discrimination, Alan Kamil, John W. Davenport
Avian Cognition Papers
Rats were trained in 2 SD-SΔ discrimination experiments in which the effects of an SD-postponement contingency during SΔ and temporal regularity of SΔ duration were assessed. Experiment I showed that discrimination is markedly facilitated by the presence of an SD-postponement contingency of either fixed or variable duration. Experiment II showed that variable-duration SΔ periods in a noncontingent schedule can also greatly enhance formation of an operant discrimination. These effects were attributed to differences in the probability of adventitious reinforcement of SΔ behavior by SD events.
The Indian Mynah, John L. Long
The Indian Mynah, John L. Long
Journal of the Department of Agriculture, Western Australia, Series 4
THE Common or Indian Mynah (Acridotheres tristis) inhabits Afghanistan, Baluchistan, southern Russian Turkestan, India, Ceylon and the Andaman Islands.
Some Aspects Of The Age And Growth Of The Longear Sunfish, Lepomis Megalotis, In Arkansas Waters, Edmond J. Bacon Jr., Raj V. Kilambi
Some Aspects Of The Age And Growth Of The Longear Sunfish, Lepomis Megalotis, In Arkansas Waters, Edmond J. Bacon Jr., Raj V. Kilambi
Journal of the Arkansas Academy of Science
No abstract provided.
The Red-Whiskered Bulbul, John L. Long
The Red-Whiskered Bulbul, John L. Long
Journal of the Department of Agriculture, Western Australia, Series 4
Widely distributed in both Africa and Asia, Bulbuls are a largely tropical group of fruit eating birds ranging in size from that of a house sparrow to a blackbird.
Maturity And Spawning Periodicity Of The Gizzard Shad, Dorosoma Cepedianum, (La Sueur), In Beaver Reservoir, Raymond E. Baglin Jr., Raj V. Kilambi
Maturity And Spawning Periodicity Of The Gizzard Shad, Dorosoma Cepedianum, (La Sueur), In Beaver Reservoir, Raymond E. Baglin Jr., Raj V. Kilambi
Journal of the Arkansas Academy of Science
No abstract provided.
Notes On Spotted Skunks (Genus Spilogale) From Western Mexico, Hugh H. Genoways, J. Knox Jones Jr.
Notes On Spotted Skunks (Genus Spilogale) From Western Mexico, Hugh H. Genoways, J. Knox Jones Jr.
University of Nebraska State Museum: Mammalogy Papers
Specimens of spotted skunks acquired from western Mexico by the Museum of Natural History at the University of Kansas in the past two decades add substantially to the knowledge of the species occurring in that region. Two specimens of the rare Spilogale pygmaea (one from Sinaloa and one from Oaxaca) are reported for the first time. Two subspecies of pygmy spotted skunk are recognized - S. p. pygmaea Thomas with type locality at Rosario, Sinaloa, and S. p. australis Hall with type locality at Acapulco, Guerrero.
The large spotted skunk, Spilogalepusorius, varies clinally in size form north (larger) to …
Studies On The Avifauna Of Burgner Acres, An Upland Stream-Side, Ash-Elm Forest And Its Edge, Kerry Lee Bryan
Studies On The Avifauna Of Burgner Acres, An Upland Stream-Side, Ash-Elm Forest And Its Edge, Kerry Lee Bryan
Masters Theses
No abstract provided.
Studies On The Planktonic Protozoa And Other Microbiota Of A Eutrophic Lake, Neil Howard Chance
Studies On The Planktonic Protozoa And Other Microbiota Of A Eutrophic Lake, Neil Howard Chance
Masters Theses
No abstract provided.
A Balanced Salt Culture Medium For Halteria Grandinella, Yee Wan Mark
A Balanced Salt Culture Medium For Halteria Grandinella, Yee Wan Mark
All-Inclusive List of Electronic Theses and Dissertations
The animals that the writer worked with liere the unicellular organisms called liaJ,tez:ia grandil.!iilJ.a• They belong to the Pl~lum Protozoa and are placed in the Class Ciliata and the Order Oligotrichia. llftltez'A gDJ}gini•U, like most protozoa, ll ve in waters but they seem to prefer qUiet pools, lakes, and ponds in which aqua i;;!c plants are growing and in which there is much organic matter.
The Indian Crow, John L. Long
The Indian Crow, John L. Long
Journal of the Department of Agriculture, Western Australia, Series 4
THE Indian crow occasionally reaches the shores of Australia from southern Asia via ships travelling between Indian and Australian ports.
What Are Vermin?, A R. Tomlinson
What Are Vermin?, A R. Tomlinson
Journal of the Department of Agriculture, Western Australia, Series 4
ACCORDING to one dictionary the term 'vermin'includes "mammals and birds injurious to game or crops", "rats and mice", "noxious insects", "parasitic worms" and even "vile persons."
Ninth Random Sample Laying Test, 1965-66, Department Of Agriculture, Western Australia
Ninth Random Sample Laying Test, 1965-66, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
NINTH RANDOM SAMPLE LAYING TEST, 1965-66
POULTRY RESEARCH STATION, WEMBLEY
FINAL REPORT TO 500 DAYS
Tenth Random Sample Laying Test, 1966-67 : Cages, Department Of Agriculture, Western Australia
Tenth Random Sample Laying Test, 1966-67 : Cages, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
TENTH RANDOM SAMPLE LAYING TEST, 1966-67 - CAGES
POULTRY RESEARCH STATION, WEMBLEY
SECOND PROGRESSIVE REPORT TO 26th FEBRUARY, 1967
Average age of birds 215.5 days or 30 weeks and 6 days.
Special Field Days For Merino Breeders, Department Of Agriculture, Western Australia
Special Field Days For Merino Breeders, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
More than 200 Merino stud breeders attended special stud breeding and fertility field days arranged for them by the Department of Agriculture recently.
Breeders attending represented some 40 per cent of the State's Merino studs.
Subspecies And Ecology Of Meadowlarks In Northwest Arkansas, Robert Lowery, Earl L. Hanebrink
Subspecies And Ecology Of Meadowlarks In Northwest Arkansas, Robert Lowery, Earl L. Hanebrink
Journal of the Arkansas Academy of Science
No abstract provided.
Poultry Behaviour As It Affects Management, R H. Morris
Poultry Behaviour As It Affects Management, R H. Morris
Journal of the Department of Agriculture, Western Australia, Series 4
UNDER natural conditions animals have considerable control over their movements and over their proximity to each other.
Today, however, there is a trend in animal husbandry towards greater intensificaton, and this is most evident in the poultry industry.
Tenth Random Sample Laying Test, 1966-67 : Litter, Department Of Agriculture, Western Australia
Tenth Random Sample Laying Test, 1966-67 : Litter, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
TENTH RANDOM SAMPLE LAYING TEST, 1966-67 - LITTER
POULTRY RESEARCH STATION, WEMBLEY
SECOND PROGRESSIVE REPORT TO 26th FEBRUARY,1967
Average age of birds 215.5 days or 30 weeks and 6 days.
Growth Rates At Various Temperatures Of The Orange-Throat Darter Etheostoma Spectabile (Agassiz), Boyce W. West
Growth Rates At Various Temperatures Of The Orange-Throat Darter Etheostoma Spectabile (Agassiz), Boyce W. West
Journal of the Arkansas Academy of Science
No abstract provided.
Individual Sow Feeders, P Mcnamara
Individual Sow Feeders, P Mcnamara
Journal of the Department of Agriculture, Western Australia, Series 4
FOOD is the major cost in any pig enterprise and it is particularly easy for waste to occur in the breeding herd.
Individual feeders enable the pigman to feed each sow according to her need, and enable the sows to eat their feed slowly or quickly as they choose.
Heat Resistance Experiments With The Longear Sunfish, Lepomis Megalotis (Rafinesque), William H. Neill, Kirk Strawn, James E. Dunn
Heat Resistance Experiments With The Longear Sunfish, Lepomis Megalotis (Rafinesque), William H. Neill, Kirk Strawn, James E. Dunn
Journal of the Arkansas Academy of Science
No abstract provided.