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Articles 20101 - 20130 of 21395
Full-Text Articles in Entire DC Network
Front Matter, Vol. 20 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 20 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Whole Issue Nebraska Bird Review (June 1976) 44(2)
Whole Issue Nebraska Bird Review (June 1976) 44(2)
Nebraska Bird Review
Table of Contents
The Seventy-fifth Annual Meeting ..................................... 18
1975 (Eighteenth) Fall Occurrence Report ........................... 19
Brown Towhee Reported ................................. 30
Book Reviews........................................ 31
Notes ................................................ 33
The Streblid Batflies Of Venezuela (Diptera: Streblidae), Rupert L. Wenzel
The Streblid Batflies Of Venezuela (Diptera: Streblidae), Rupert L. Wenzel
Brigham Young University Science Bulletin, Biological Series
This study was based on more than 36,000 Venezuelan Streblidae representing ca. 115 species and species complexes in 22 genera, taken from more than 6,800 hats of 95 species. Two new genera are proposed and 45 new species are described. The morphology is briefly discussed and terminology is revised. Collection data are given for each species, together with discussions on variability and host relationships when pertinent. Keys to genera and species arc included, as well as illustrations of most species. Noctiliostrebla dubia (Rudow) and the male of Parastrebla handleyi Wenzel are characterized, and relationships of Speiseria are discussed. New Taxa– …
Parasites Of California Marine And Estuarine Fish, Milton S. Love, Mike Moser
Parasites Of California Marine And Estuarine Fish, Milton S. Love, Mike Moser
Harold W. Manter Laboratory of Parasitology: Faculty Publications
While working on the parasites of several California marine fish, it was difficult to find out which parasites had been reported from our fish. Pertinent sources were scattered over a number of journals, covering many years. We compiled this list because we felt there was a need for a single source which would give all the parasites infecting California marine fish. As "marine fish" was a somewhat vague term, we decided to use it in a broad sense and included estuarine and anadromous fish in the survey. In addition, we have included records from landlocked populations of anadromous fish, such …
The Chromosome Constitutions Of A Hybrid Salmonid And Its Parental Types: Salmo Gairdneri And Salmo Clarki, Peter Bruce Valentine Jacky
The Chromosome Constitutions Of A Hybrid Salmonid And Its Parental Types: Salmo Gairdneri And Salmo Clarki, Peter Bruce Valentine Jacky
Dissertations and Theses
A study was undertaken to investigate the application of tissue culture and histochemical banding techniques normally used in mammalian studies to fish cells and to examine the mechanisms of chromosome evolution and speciation in salmonids by comparing the chromosomes of the hybrid to those of the parental types. The application of banding techniques was generally unsuccessful in revealing bands, though quinacrine staining did reveal the presence of two fluorescent spots in the vicinity of the centromere. These were thought to be heterochromatic blocks, possibly related to the high incidence of centric fusion or fission in salmonids. Results of chromosome analysis …
Kentucky Warbler (Vol. 52, No. 2), Kentucky Library Research Collections
Kentucky Warbler (Vol. 52, No. 2), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Forage Selection And Nutrition Of Sheep And Goats Grazing In The Tunisian Pre-Sahara, Rudolfo Ricardo Griego
Forage Selection And Nutrition Of Sheep And Goats Grazing In The Tunisian Pre-Sahara, Rudolfo Ricardo Griego
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Nomadic pastoralism has been the traditional method of utilizing grazing resources in arid and semi-arid regions of Africa. However, increased sedentarization accompanied by growing human and animal populations during the past two decades is thought to be accelerating the desertification process, or desert expansion. The specific interactions of the grazing animal with this process has been speculated upon but not studied in detail. A comparative study was initiated during the spring grazing season of 1974 to determine sheep and goat nutritional and production responses, as well as patterns of vegetative selection and utilization under the pastoral system currently employed in …
Breeding Biology And Pesticide-Pcb Contamination Of Western Grebe At Bear River Migratory Bird Refuge, Mark L. Lindvall
Breeding Biology And Pesticide-Pcb Contamination Of Western Grebe At Bear River Migratory Bird Refuge, Mark L. Lindvall
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The breeding biology of western grebe was studied at Bear River Migratory Bird Refuge, Utah in 1973 and 1974. More than 300 nests were located and data gathered on nesting habitat and success. Western grebe at Bear River selected nest sites for nearness to open water of approximately 30 em in depth. At least one young was hatching in 21 percent of the nests. Avian predation and abandonment of nests following drops in water levels caused the greatest loss of nests. Chlorinated hydrocarbons monitored in western grebes showed DDE, DDD, PCB, 1260, and PCB 1254 levels in 24 breast muscle …
Food Interactions Between Utah Prairie Dogs And Cattle, Dennis Crocker-Bedford
Food Interactions Between Utah Prairie Dogs And Cattle, Dennis Crocker-Bedford
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study examined the food interactions between Utah prairie dogs (Cynomys parvidens, Allen) and cattle (Bos taurus). During 1974 and 1975, three prairie dog colonies near Panguitch, Utah, were studied intensely: "Oldfield" was chosen to represent colonies near fields of alfalfa (Medicago sativa); "Lowercrested" was chosen to represent colonies below 2,200 meters above sea level (a.s.l.) which were not near alfalfa, and "Uppercrested" was chosen to represent colonies above 2,200 meters a.s.l. which have been planted with crested wheatgrass.
Visual observations were made of Utah prairie dogs to determine their diets. Livetrapping of prairie …
Feeding Behavior Of Pen Reared Mule Deer Under Winter Range Conditions, Michael A. Smith
Feeding Behavior Of Pen Reared Mule Deer Under Winter Range Conditions, Michael A. Smith
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study examined the feeding responses of mule deer to a system of spring livestock grazing. The specific purposes were 1) to determine botanical composition of diets selected by mule deer on a winter range subjected to previous spring grazing by sheep compared to one with no sheep grazing and 2) to develop a basis for predicting selection of individual plants by deer, based on physical characteristics of the plants and the species and physical proximity of associated plants.
The study was conducted within the framework of a completely randomized experimental design with two treatments. Variables controlled for each unit …
A New Species Of Chiroderma From Guadeloupe, West Indies (Chiroptera: Phyllostomidae), Robert J. Baker, Hugh H. Genoways
A New Species Of Chiroderma From Guadeloupe, West Indies (Chiroptera: Phyllostomidae), Robert J. Baker, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
During the course of a study of the bat faunas of the Caribbean islands we obtained a specimen of Chiroderma from the island of Guadeloupe in the Lesser Antilles. The nearest known populations of this genus occur on Tobago and Trinidad (C. villosum and C. trinitatum). approximately 550 kilometers to the south. This specimen represents a distinct new species that appears to be most closely related to C. doriae and C. villosum. This new species is named and described.
The Legal And Institutional Status And Potential Of Aquaculture In Rhode Island, F. B. Montague
The Legal And Institutional Status And Potential Of Aquaculture In Rhode Island, F. B. Montague
Marine Affairs Theses and Major Papers
The types of aquaculture practiced in Rhode Island are divided into extensive and intensive forms. Current efforts are discussed with accompanying photographs, and depuration is presented as a means for expanding the waters available for aquaculture. To gain insight into the institutional nature for Rhode Island aquaculture, the relevant state agencies and possible required permits are outlined, along with the impact of existing state laws affecting aquaculture.
Bulletin No 3863 - Plants Which Cause Kimberley Horse Disease, A. L. Payne
Bulletin No 3863 - Plants Which Cause Kimberley Horse Disease, A. L. Payne
Bulletins - 3000 - 3999
Crotalaria crispata and Crotalaria retusa (Rattlepod), two plants responsible for Kimberley horse disease*, are, unfortunately, fairly widespread throughout the Kimberleys. Both species are apparently toxic in all stages of growth.
This bulletin is to assist pastoralists to:-
• Identify the two plants;
• Recognise the type of country and conditions under which they grow; and
• Locate horse paddocks on country where the plants are least likely to occur.
Improved Techniques For Marking, Night-Viewing, And Aging White-Tailed Deer, Odocoileus Virginianus, Barnard Hodge Powell
Improved Techniques For Marking, Night-Viewing, And Aging White-Tailed Deer, Odocoileus Virginianus, Barnard Hodge Powell
Biological Sciences Theses & Dissertations
These studies were concerned with the development of methods to assist investigators of wildlife population research. Specifically they involve the description of (1) A device which enables an investigator to mark deer at medium range using specially modified darts fired by conventional tranquilizer rifles, (2) Construction of infrared viewers and light sources using surplus equipment and (3) Studies to develop a method of making permanent deer dental impressions under field conditions.
Modeling Studies Of Small Mammal Trapping Phenology, And Plant Succession In The Kaiparowits Region, Kane County, Utah, James A. Raines
Modeling Studies Of Small Mammal Trapping Phenology, And Plant Succession In The Kaiparowits Region, Kane County, Utah, James A. Raines
Theses and Dissertations
This study makes use of simple statistical models which may be manipulated for projection of changes in the Kaiparowits Region of Southern Utah. A method of determining habitat preferences of small rodents from capture-recapture trapping data is proposed. It is suggested that some aspects of animal behavior regarding trapping may also be explained. Timing of flowering of Oryzopsis hymenoides and Hilaria jamesii as related to enviromental conditions was investigated, and models of the requisite conditions proposed. It is suggested that similar models may be used to describe the timing of other phenological events. Succession on disturbed sites is considered to …
Effect Of Supplemental Food On Population Estimates And Mortality Rates Of Desert Rodents In Utah, J. Steven Thiriot
Effect Of Supplemental Food On Population Estimates And Mortality Rates Of Desert Rodents In Utah, J. Steven Thiriot
Theses and Dissertations
The objective of this research is to assess the effects of various quantities of supplemental food (seed) on population estimates and mortality rates of desert rodents . The supplemental food is meant to stimulate natural vegetational productivity. If food availability significantly affects the population parameters methods of population estimators previously used may be in error. Hopefully this study will aid small mannnal research by designating whether, in part, population estimates and mortality rates are in error because of high vegetational productivity. The hypothesis of this study is that supplemental food in the natural environment decreases population estimates and mortality rates …
Influence Of A Dry Wash Habitat On Distribution And Movement Of Heteromyid Rodents, Jeffrey S. Green
Influence Of A Dry Wash Habitat On Distribution And Movement Of Heteromyid Rodents, Jeffrey S. Green
Theses and Dissertations
Three heteromyid rodent species were studied in relation to a large dry wash in Millard County, Utah, during the summer, 1974. Data were gathered with three trapping grids and analyzed to determine if the dry wash influenced rodent movement and distribution patterns. Dipodomys ordii and Dipodomys microps were distributed non-randomly in the dry wash and adjacent habitat, but Perognathus Zongimembris seemed to be randomly distributed. Dipodomys ordii was significantly correlated with wash habitat, but D. microps was found most frequently in upland areas. Soil and vegetative differences and competition were possible causes for the observed distribution. The wash was observed …
1976 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University
1976 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University
Little International "Little I" Agricultural Exposition Catalogs
No abstract provided.
Phytoseiid Predators Of Mite Pests In Utah Apple Orchards, Vichitra Mongkolprasith
Phytoseiid Predators Of Mite Pests In Utah Apple Orchards, Vichitra Mongkolprasith
Theses and Dissertations
Recent efforts to integrate certain Phytoseiid predators in pest (mite) management programs for apples have been somewhat successful and economical in many fruit growing areas. Convenient descriptions and reviews of the literature for species which have been collected from the state are provided to stimulate further work with Utah Phytoseiids. Seven species of Amblyseius and five Typhlodromus are described and notes provided concerning their respective geographic distributions and biologies.
Kentucky Warbler (Vol. 52, No. 1), Kentucky Library Research Collections
Kentucky Warbler (Vol. 52, No. 1), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Cost Of Treating Wastewater From Poultry Processing Plants, The, W. Davis Folson, Robert L. Leonard
Cost Of Treating Wastewater From Poultry Processing Plants, The, W. Davis Folson, Robert L. Leonard
Storrs Agricultural Experiment Station
No abstract provided.
Birds A Special Interest Of New Acting Law Dean
Birds A Special Interest Of New Acting Law Dean
Val Nolan Jr. (1976 Acting; 1980 Acting)
No abstract provided.
Fisheries Report No 26 - Report On Lake Chandala With Recommendations Of Its Importance As A Fauna Reserve, Alan Tingay, Susan R. Tingay
Fisheries Report No 26 - Report On Lake Chandala With Recommendations Of Its Importance As A Fauna Reserve, Alan Tingay, Susan R. Tingay
Fisheries Research Reports
The hydrology, vegetation, fauna and land use of Lake Chandala (31°30 'S, 115°57'E) is described on the basis of field and literature surveys. The significance of the Lake as a Straw-necked Ibis (Thresktornts spinicollis) nesting rookery is emphasised and recommendations are made for its acquisition and future management.
Fisheries Report No 23 - The Management Of Nature Reserves In Western Australia, Andrew A. Burbidge, Trevor Evans
Fisheries Report No 23 - The Management Of Nature Reserves In Western Australia, Andrew A. Burbidge, Trevor Evans
Fisheries Research Reports
The number and area of Nature Reserves in Western Australia has grown rapidly in recent times. At 80 June 1975 there were 491 reserves with an area of 5 103 037 hectares. By 31 December 1975, with the inclusion of reserves for the Conservation of Flora in the definition of a Nature Reserve, there were 900 reserves totalling 5 317 965 ha. With the implementation of the Environmental Protection Authority's recommendations based on the Conservation Through Reserves Committee's Report on Systems 4, 8, 9, 10, 11 and 12 the Nature Reserve System will jump to 985 reserves with an area …
Fisheries Report No 22 - The Western Rock Lobster Fishery 1971 - 1972, G. R. Morgan, E H. Barker
Fisheries Report No 22 - The Western Rock Lobster Fishery 1971 - 1972, G. R. Morgan, E H. Barker
Fisheries Research Reports
The fishery for the western rock lobster* is one of the most important single fisheries in Australia and an important export earner for the State. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and which are designed to limit the total effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to ensure that the effort is remaining within the accepted limits and that the regulations are adequately performing their function of maintaining reasonably stable catches. Inherent …
Report No 21 - A Resource Survey Of Woody Island, Archipelago Of The Recherche, J. Goodsell, A. Tingay, S. R. Tingay
Report No 21 - A Resource Survey Of Woody Island, Archipelago Of The Recherche, J. Goodsell, A. Tingay, S. R. Tingay
Fisheries Research Reports
A resource survey of Woody Island was undertaken by the three authors from 26 October, 1975 to 8 November, 1975.
The island has some unusual faunal and floral features not yet recorded for the Archipelago. These are discussed.
Some problems in relation to the island's management are identified.
Fisheries Report No 25 - The Western Australian Amateur Fishery For Australian Herring (Arripis Georgianus) - Results Of The 1973 Creel Census, R C.J. Lenanton, N. G. Hall
Fisheries Report No 25 - The Western Australian Amateur Fishery For Australian Herring (Arripis Georgianus) - Results Of The 1973 Creel Census, R C.J. Lenanton, N. G. Hall
Fisheries Research Reports
Historically, the Western Australian production of Australian herring (Arrtpts georgtanus) has fluctuated from year to year in response to changing market demand. Prior to 1968, the annual catch taken by professional fishermen was relatively stable, ranging from 200 000 kg (approx. 500 000 pounds) to 450 000 kg (approx. 1 000 000 pounds). From 1968, commercial production has risen to a peak of 1 187 440 kg (2 617 857 pounds) recorded in 1972/73 (Table I). An increase in demand for herring as bait for the rock lobster fishery is considered to be the major factor involved in this observed …
Investigations Of The Ichthyofauna Of Nicaraguan Lakes: Frontmatter
Investigations Of The Ichthyofauna Of Nicaraguan Lakes: Frontmatter
Investigations of the Ichthyofauna of Nicaraguan Lakes
Dedication
Commentary on this Compendium
Preface
Acknowledgments
Contributors
Contents
Chemical Analyses Of Some Crater Lakes In Relation To Adjacent Lake Nicaragua, George W. Barlow, Jeffrey R. Baylis, Dale Roberts
Chemical Analyses Of Some Crater Lakes In Relation To Adjacent Lake Nicaragua, George W. Barlow, Jeffrey R. Baylis, Dale Roberts
Investigations of the Ichthyofauna of Nicaraguan Lakes
In spite of the wide interest by naturalists in the Great Lakes of Nicaragua their limnology has received little study. Cole (1976) has reviewed the literature and contributed new data and interpretations. Our paper adds to his larger work by presenting chemical analyses of Lake Nicaragua and some of the small crater lakes near it. These smaller lakes have been neglected. The only information published about them is a fragmentary table in Riedel (1964), giving some comparative data on surface area, circumference, and depth.