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Articles 42031 - 42060 of 42628
Full-Text Articles in Entire DC Network
Antifertility Agents In Vertebrate Pest Control, Donald S. Balser
Antifertility Agents In Vertebrate Pest Control, Donald S. Balser
Vertebrate Pest Conference Proceedings: 2nd (1964)
There is an increasing need for new means of population control from the simplest organisms up to the larger mammalian species (include man if you wish.) A number of interesting and promising leads, such as environmental manipulation, introduction of predators, diseases, parasites, etc., and particularly antifertility agents, have been proposed for some time, but research into the latter approach in mammal control is quite recent and limited. The use of toxic agents has long been the principal method of vertebrate population con¬trol, but the potential for the use of antiferti1ity agents to suppress reproduction may provide an important advancement. I …
The Control Of Vertebrate Problem Animals In The Province Of The Cape Of Good Hope, Republic Of South Africa, Douglas Hey
The Control Of Vertebrate Problem Animals In The Province Of The Cape Of Good Hope, Republic Of South Africa, Douglas Hey
Vertebrate Pest Conference Proceedings: 2nd (1964)
The policy of the Cape Provincial Department of Nature Conservation is based on the concept of "wise management" of wildlife resources. Where crop damage is real, control measures are essential. These, however, must be adapted to the species concerned and applied only where the damage is taking place. Blanket measures which also kill many useful species must be avoided. For this reason, the control of problem animals should be vested in the agency concerned with wildlife conservation.
Pest Control Methods And People, John E. Swift
Pest Control Methods And People, John E. Swift
Vertebrate Pest Conference Proceedings: 2nd (1964)
Frankly I am not sure what "Pest Control Methods and People" really means. When I asked what I should cover, I was told to give a general discussion on pesticides. I am not sure this is appropriate even though the laws and regulations that pertain to other pesticides apply equally to those materials used in vertebrate pest control; the conditions of use, the types of chemicals used, their effect upon various animal species, and the number of chemicals available are so different from the pesticides used in controlling invertebrate pests that generalizations may not cover the topic. There are, however, …
Bats: Their Public Health Importance And Control With Special Reference To Trinidad, Arthur M. Greenhall
Bats: Their Public Health Importance And Control With Special Reference To Trinidad, Arthur M. Greenhall
Vertebrate Pest Conference Proceedings: 2nd (1964)
This brief review of the public health importance and control of bats is oriented to Trinidad, where, during the past ten years I investigated their zoomedical importance (1). Trinidad is noted for Pawan's classic epidemiological studies of bat rabies (2,3) as well as its bat control program with which I have been associated since its inception in 1934 (4). Further, Trinidad has bat problems, in addition to rabies, which occur in other countries of the world. Although various methods of bat control have been developed in Trinidad, the field is virtually unexplored. Increasingly, bat control is a matter of paramount …
Sound In Vertebrate Pest Control, Hubert Frings
Sound In Vertebrate Pest Control, Hubert Frings
Vertebrate Pest Conference Proceedings: 2nd (1964)
The best known vertebrate pests, as the papers presented at this meeting show, are birds and mammals. Other vertebrates, however, may become pests also: sharks, lampreys, toads (they fall into swimming pools), geckos, tortoises and snakes, for example. Without considering them, however, the depredations by birds and mammals alone are so varied that no single method of pest control can ever be all-embracing. Certainly, no one would suggest that acoustical methods would be, but, with further study, acoustical pest control should be much more widely used. I hope to point out here the possibilities and a few realities in bio-acoustics …
Diseases Derived From Wildlife, Harald Norlin Johnson M.D.
Diseases Derived From Wildlife, Harald Norlin Johnson M.D.
Vertebrate Pest Conference Proceedings: 2nd (1964)
The specific diseases of man known to be derived from wildlife in California are: rabies, Western encephalitis, St. Louis encephalitis, Colorado tick fever, Rocky Mountain spotted fever, relapsing fever, 0. fever, plague, tularemia, murine typhus, lymphocytic choriomeningitis, psittacosis, leptospirosis, salmonellosis and toxoplasmosis. A variety of bacterial infections may be contracted from wild animals, notably those caused by Pasteurella pseudotuberculosis, Pasteurella multocida, Bacillus anthracis, Erysipelothrix rhusiopathiae, Clostridium tetani and Listerella monocyto-genes. Certain of the fungus diseases such as coccidioidomycosis and histoplasmosis are derived from exposure to wildlife habitats. California virus has been isolated from arthropods and Rio Bravo virus from bats …
Animal Population Ecology And Control Fundamentals, Kenneth E. F. Watt
Animal Population Ecology And Control Fundamentals, Kenneth E. F. Watt
Vertebrate Pest Conference Proceedings: 2nd (1964)
Expensive, extensive and apparently lethal control measures have been applied against many species of pest vertebrates and invertebrates for decades. In spite of this, few pests have been annihilated, and in many cases the stated goals have become progressively more modest, so that now we speak of saving foliage or a crop, rather than extermination. It is of interest to examine the reasons why animals are so difficult to exterminate, because this matter, of course, has implications for the type of control policy we pursue in the future. Also, it has implications for the problem of evaluating comparatively various resource …
The Role Of Pest Control Operators In Vertebrate Pest Control, Philip J. Spear
The Role Of Pest Control Operators In Vertebrate Pest Control, Philip J. Spear
Vertebrate Pest Conference Proceedings: 2nd (1964)
The National Pest Control Association, which I represent, accepts for membership those persons or firms which are actively engaged in the performance of structural pest control services for hire to the public at large and which are in sympathy with the purposes of the Association. The pest control operator in this context might be called a commercial pest control operator to distinguish him from those doing similar work but who are employed by governmental agencies or within large commercial organizations. Pest control is a growing industry with a gross annual income of 300-350 million dollars. It is estimated to contain …
Opening Remarks, James W. Koehler
Opening Remarks, James W. Koehler
Vertebrate Pest Conference Proceedings: 2nd (1964)
The purpose of this Vertebrate Pest Control Conference are several. They are to: 1. Get acquainted with other persons in the field of vertebrate pest control ; 2. Learn the best and safest methods of vertebrate pest control; 3. Hear what is going on in the various fields of research; 4. Stimulate new research; 5. Improve communications between research workers and between research workers, pest control operators and industry developers of materials used in the field of vertebrate pest control; 6. Inform the public about the true role of vertebrate pest control and why it is sometimes necessary, and 7. …
Starlings In The Pacific Northwest, H. Nelson Elliott
Starlings In The Pacific Northwest, H. Nelson Elliott
Vertebrate Pest Conference Proceedings: 2nd (1964)
As is the case in many sections of the country today, starlings are causing increasing concern in the Pacific Northwest. When these birds were first recognized in Washington, Oregon and Idaho in the early 1940's only small numbers were seen, usually with blackbirds. During the 50's, however, the number of wintering starlings increased from a few birds, to thousands, with estimated flocks of 25,000 to 50,000 in western Oregon and along the Snake River Valley in Idaho and eastern Oregon. During the past five years winter resident populations in these areas have been estimated by the 100,000's, with some observers …
Testing And Registration Of New Control Materials, Donald A. Spencer
Testing And Registration Of New Control Materials, Donald A. Spencer
Vertebrate Pest Conference Proceedings: 2nd (1964)
The Federal Insecticide, Fungicide, and Rodenticide Act broadly encompasses, " any substance or mixture of substances intended for pre¬ venting, destroying, repelling, or mitigating...." a pest. The act includes devices as well as chemicals used in the control of pests. It is the responsibility of the manufacturer to provide authoritative evidence of the efficacy and safety of his pesticide product. Within the scope of these four brief excerpts from the act there is much about which personnel engaged in research and development of vertebrate pest control products should be informed. As stated, the coverage of the act is very complete, …
Second Vertebrate Pest Control Conference: Contents, Schedule, And Participants
Second Vertebrate Pest Control Conference: Contents, Schedule, And Participants
Vertebrate Pest Conference Proceedings: 2nd (1964)
PROCEEDINGS SECOND VERTEBRATE PEST CONTROL CONFERENCE
Charter House Hotel Anaheim, California March 4 and 5, 1964
SPONSOR:California Vertebrate Pest Control Technical Committee
GENERAL CHAIRMAN OF CONFERENCE: James W. Koehler, Chief, Weed and Vertebrate Pest Control, California Department of Agriculture, Sacramento, California
PROGRAM AND PUBLICITY:
Maynard W. Cummings, Chairman Extension Wildlife Management Specialist, University of California, Davis
James W. Koehler, Chief, Weed and Vertebrate Pest Control, California Department of Agriculture, Sacramento, California
Walter E. Howard, Associate Vertebrate Ecologist, Department of Animal Physiology, University of California, Davis, California
Keith F. Murray, Senior Vector Control Specialist, Bureau of Vector Control, California Department of …
The Role Of Industry In Developing New Materials For Vertebrate Pest Control, G. Hermann, W. M. Zeck
The Role Of Industry In Developing New Materials For Vertebrate Pest Control, G. Hermann, W. M. Zeck
Vertebrate Pest Conference Proceedings: 2nd (1964)
In the first paper presented to you today by Dr. Spencer, an expert in the Animal Biology field and an official authority at the same time, you heard about the requirements imposed on a chemical in order to pass the different official hurdles before it ever will be accepted as a proven tool in wildlife management. Many characteristics have to be known and highly sophisticated tests have to be run. In many instances the governmental agency maintains its own screening, testing or analytical programs according to standard procedures. It would be impossible, however, for economic and time reasons to work …
Henry George In England, Milton A. Ochsner
Henry George In England, Milton A. Ochsner
Journal of the Minnesota Academy of Science
The forward rush of the Industrial Revolution had already by the tum of the 19th century silenced the hand looms in England and sent their operators to the city and its factories. Once there, the masses and their government fell prey to all the problems attendant to rapid and disorderly industrialization of which high rent, periodic unemployment, and labor unrest were just a few. The fundamental homogeneous outlook which the British had always somehow maintained in the face of other crises was now threatened anew. This was a new misery that gripped the land. It struck hardest at those who …
Fisheries Report No I (1) - The Shark Bay Fishery On Snapper Chrysophrys Unicolor (Quoy And Gaimard), B. K. Bowen
Fisheries Report No I (1) - The Shark Bay Fishery On Snapper Chrysophrys Unicolor (Quoy And Gaimard), B. K. Bowen
Fisheries Research Reports
As regards both catch and value, the Shark Bay snapper fishery is the second most important scale fishery in Western Australia. Until 195%, the fishing was done solely by means of hard-lines operated from beats drifting over the snapper patches. In 1959 traps were first used with great success and in 196) this method of fishing was again the principal technique.
Prior to the 1960 season there were several suggestions that the use of traps would have a deleterious effect on the fishery. On October 19, 1959, the Western Australian League of the Professional Fishermen's Association wrote to the Fisheries …
Dairy Farming In The Busselton-Margaret River District. Part 1. Stage Of Development, R A. Bettenay
Dairy Farming In The Busselton-Margaret River District. Part 1. Stage Of Development, R A. Bettenay
Journal of the Department of Agriculture, Western Australia, Series 4
This article is the first of four in a series reporting a survey of farming practices in the Busselton-Margaret River area.
Besides the development of farms the series will cover farm stocking rates and milk production on farms in the area.
THE survey of farms in the Busselton-Margaret River district began at the end of the 1962 season.
Information on the stage of development of the properties was obtained from 94 farmers during advisory visits.
Grade Herd Recording, 1963-64, Maurice C. Cullity
Grade Herd Recording, 1963-64, Maurice C. Cullity
Journal of the Department of Agriculture, Western Australia, Series 4
A review of Grade Herd Recording during the 1963-64 season.
THERE was a substantial increase in the number of cows which were recorded in 1963-64 compared with 1962-63 (23,520 and 22,635 respectively).
This season's figure represents 20.4 per cent, of all cows in the dairying districts.
The number of cows which completed lactation and therefore whose yields were included in the averages, rose from 17,258 to 19,011.
Migratory Movements Of Emus And Control Efforts, John L. Long, T. J. Tozer
Migratory Movements Of Emus And Control Efforts, John L. Long, T. J. Tozer
Journal of the Department of Agriculture, Western Australia, Series 4
ALTHOUGH little data has been recorded on movements or migrations of the Emu (Dromaius novea-hollandiae), it is well known throughout the farming community that some such movement occurs in September and October in most years at least.
Sulfur Fertilizers For Alfalfa Production In Nebraska, R. L. Fox, A. D. Flowerday, F. W. Hosterman, H. F. Rhoades, R. A. Olson
Sulfur Fertilizers For Alfalfa Production In Nebraska, R. L. Fox, A. D. Flowerday, F. W. Hosterman, H. F. Rhoades, R. A. Olson
Nebraska Agricultural Experiment Station: Historical Research Bulletins
In order to elaborate all aspects of the sulfur problem in alfalfa production, a series of field, greenhouse and laboratory experiments was initiated to determine: 1. The influence of sulfur fertilization on the yield of alfalfa in Nebraska. 2. The influence of sulfur fertilization on the protein, vitamin A, and sulfur contents of alfalfa. 3. The sulfur supplying capacities of various soils under field and greenhouse conditions. 4. The sulfur content of precipitation at widely scattered points in Nebraska. 5. Soil properties associated with sulfur deficiency. 6. Optimum methods for estimating the sulfur status of soils by soil testing. The …
Salt Land Survey, 1962 : Report Of A Survey Of Soil Salinity In The Agricultural Areas Of Western Australia, L C. Lightfoot, S. T. Smith, C. V. Malcolm
Salt Land Survey, 1962 : Report Of A Survey Of Soil Salinity In The Agricultural Areas Of Western Australia, L C. Lightfoot, S. T. Smith, C. V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
IN Western Australia there are within the agricultural areas about one million acres of salt land, largely within the 14-25 inch rainfall area used for cereal and wool production.
In March, 1962, farmers in 68 shires in the agricultural areas of Western Australia estimated that on their properties 305,270 acres of land previously cropped or sown to pasture had become salt affected. Of this total, 59,203 acres had gone salt in the seven years immediately before the survey.
Agriculture In The Lakes District : Report Of A Survey Of Farm Practices, A W. Hogstrom
Agriculture In The Lakes District : Report Of A Survey Of Farm Practices, A W. Hogstrom
Journal of the Department of Agriculture, Western Australia, Series 4
At the request of the Central South Zone Development Committee a survey which covered 58 farms in the Lakes District was carried out by officers of the Department of Agriculture. Field work for the survey started in 1961.
The Lakes District supports about 70 holdings adjoining a chain of salt lakes to the east of Newdegate and Hyden but west of the No. 1 Rabbit Proof Fence.
The chain of lakes is about 70 miles long running in a N.N.W. to S.S.E. direction. The lakes are O'Connor, Carmody, Hurlstone, Varley, Gulson, Fox, Camm, King, and Pal lamp.
Set Stocking Has A Place In Soil Conservation Farming, J E. Watson
Set Stocking Has A Place In Soil Conservation Farming, J E. Watson
Journal of the Department of Agriculture, Western Australia, Series 4
Set stocking of sheep at increased stocking rates is rapidly becoming popular with farmers in the agricultural areas of Western Australia.
But will set stocking increase soil erosion hazards? It should do just the reverse, according to Soil Conservation Adviser J. E. Watson, B.Sc, who claims that set stocking has a place in soil conservation farming.
Planning New Farm Dams : Excavated Earth Tanks, J E. Watson, J. C. Grasby
Planning New Farm Dams : Excavated Earth Tanks, J E. Watson, J. C. Grasby
Journal of the Department of Agriculture, Western Australia, Series 4
A GOOD farm dam is a valuable asset, and well worth its cost, but there are many aspects to consider when a new dam is required. Careful planning with adequate testing and checking will help to get the best value for money and reduce the chance of costly failures.
This article discusses these aspects in relation to the excavated earth tank type of dam.
The Microvegetation Of A Small Ice-Cave In Hungary, Erzsébet Kol
The Microvegetation Of A Small Ice-Cave In Hungary, Erzsébet Kol
International Journal of Speleology
The algal flora of a small, artificial, ice-cave located in Northern Hungary is described. In this cave 23 species of algae (see in Table 3) were found of which the Cyanophyta and Chlorophyta occurred with approximately equal number. (9 vers. 11) It was found that the primary limiting factor influencing the penetration of the algae into the cave is the low temperature and not the lack of light.
Progress In The Biological Exploration Of Caves And Subterranean Waters In Israel, I. Friedmann
Progress In The Biological Exploration Of Caves And Subterranean Waters In Israel, I. Friedmann
International Journal of Speleology
The article gives an account of the biological works carried out in the caves and other subterranean habitats of Israel. The botanical and zoological investigations are summarized separately and a list of literature dealing with biospeleological research in Israel is supplied.
Écologie De Fonticola Notadena De Beauchamp (Turbellarié, Triclade) Dans La Grotte De La Balme (Isère, France); Survie En Période De Sécheresse, René Ginet, Rodolphe Puglisi
Écologie De Fonticola Notadena De Beauchamp (Turbellarié, Triclade) Dans La Grotte De La Balme (Isère, France); Survie En Période De Sécheresse, René Ginet, Rodolphe Puglisi
International Journal of Speleology
During many months a year the acquatic Planaria (F. notadena) living in a small pool in the La Balme cave are subjected to a drought with the complete drying out of their biotope; they support in situ this lack of water and, living in a latent way inside the clayey matrix. Thanks to the great hygroscopy of the clay, enough humidity stays around the Planarians to enable them to survive. During this period the Planaria may undergo spontaneous divisions resulting in their asexual multiplication.
New Cavernicolous Millipeds Of The Family Cambalidae (Cambalidea: Spirostreptida) From Texas (U.S.A.) And Mexico, Nell B. Causey
New Cavernicolous Millipeds Of The Family Cambalidae (Cambalidea: Spirostreptida) From Texas (U.S.A.) And Mexico, Nell B. Causey
International Journal of Speleology
The cavernicoles include: (1) Cambala speobia (Chamberlin), troglobitic in central and southwest Texas; (2) C. reddelli reddelli n. sp. and subsp., troglophilic in west Texas and epigean in New Mexico; (3) C. reddelli inornatus n. subsp., troglobitic in northwest Texas; and (4) Mexicambala russelli n. gen. and sp., troglobitic in southern San Luis Potosi. They are described and figured, and a key is given.
Remarques Sur Les Japygidae (Insecta, Diplura) Signalés Dans Le Domaine Souterrain, Jean Pagés
Remarques Sur Les Japygidae (Insecta, Diplura) Signalés Dans Le Domaine Souterrain, Jean Pagés
International Journal of Speleology
About 50 japygids, belonging to 29 distinct forms of which 23 are recognizable, have been collected since 1874 in caves all over the world. A list is given, by continent and by countries. Ten species found both in the soil and in caves are called troglophiles to emphasize the sorting which seems to occur among endogenous species. Of the remaining 13 species, all considered troglobites, only 3 show morphological peculiarities which can be ascribed to adaptation to cavernicolous life: (1) Metajapyx moroderi ssp. patrizianus Pagés from Sardinia shows a slightly longer 10th urite and cerci than the f. typ.; (2) …
Survey Of Concepts Held By Bedside Nurses Relative To The Prevention Of Pressure Sores, Joan Winifred Sommer
Survey Of Concepts Held By Bedside Nurses Relative To The Prevention Of Pressure Sores, Joan Winifred Sommer
Loma Linda University Electronic Theses, Dissertations & Projects
This study was concerned with the problem of determining what understandings the bedside nurse has of the principles involved in the prevention of pressure sores. Since pressure sores are still a problem in nursing care, a study such as this was needed to ascertain the knowledge of the bedside nurse relative to their prevention. The immediate purpose of the study was to determine the concepts held by bedside nurses by asking them to state what they did to prevent pressure sores. The long range purpose was to contribute to better in-service education through the use of information gained in the …
An Evaluation Of Two Cleansing Techniques Used On Female Catheterization, Fern Iva Potter
An Evaluation Of Two Cleansing Techniques Used On Female Catheterization, Fern Iva Potter
Loma Linda University Electronic Theses, Dissertations & Projects
The Problem: This study was designed to ascertain which of two pre-catheterization cleansing procedures now in common use for the female patient is more effective in producing an area relatively free of microorganisms.
The Need: Indications of need for the study were: (1) an increasing body of literature linking catheterization with frequent urinary tract infections, many of which are "silent" but have extremely serious sequelae; (2) lack of uniformity in defining adequate pre-catheterization cleansing; and (3) absence of any recorded research to determine an adequate cleansing technique.
Method: The experimental method of research was used to collect data on one …