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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Studies on the Biology of Parasitic Amoebae of Reptiles.

Meerovitch, Eugene B. January 1957 (has links)
The species of the genus Entamoeba Casagrandi and Barbagallo, 1895, (Sarcodina, Protozoa), are all endoparasitic with one known exception. This latter is Entamoeba moshkovskii Chalaia, 1941, (Chalaia, 1941), which is encountered in sewage. Although attempts to infect various animals with this amoeba have failed, (Azzi Leal and Amaral; 1950: Neal, 1953), its life history is not yet fully known; it may be a parasite during a part of its life cycle when certain conditions prevail.

Studies on the micro-environment of rabbit trichostrongyles.

Nnochiri, Enyinnaya. January 1959 (has links)
In a previous study of the two rabbit Trichostrongyles, Trichostrongylus retortaeformis (Zader, 1800) and Graphidium strigosum (Dujardin, 1845), the writer studied under laboratory conditions, the influence of the main environmental factors on the free-living stages of these nematodes. In the present work, a closer examination of the micro-environments of the infective and adult stages of these worms has been attempted. The term micro-environment is used in this study to denote the immediate surrounding of the worm.

The nematodes of Egyptian birds.

Baer, Harold. G. January 1954 (has links)
This thesis is concerned with a collection of nematode parasites collected from Egyptian birds which was sent to the Institute of Parasitology, Macdonald College, by United States Navy Medical Unit 3, Cairo, Egypt. Recently, this unit was carrying on research in the distribution of schistosomiasis and other parasitic diseases infectious to man in the Middle Eastern countries of Yemen, Egypt and the Sudan. It was decided that it would be of considerable value to Science to make a study of the ecto- and endoparasites of these areas, and ultimately to publish a host-parasite list of the findings.

Studies on the Evolution of the Ophryoscolecidae (Ciliata: Oligotricha).

Lubinsky, George. January 1956 (has links)
The present paper was started as an investigation into the parallel variability of two species of Entodinium related to E. caudatum. It has shown, that all these species produce sets of forms with the "caudatum", "loboso-spinosum" and "dubardi" types of the caudal spination. It became obvious, that in the literature the specific names of E. caudatum, E. loboso-spinosum and E. dubardi were used to designate assemblages of parallel forms belonging to different species of Entodinium.

Perezia fumiferanae Thom., a protozoan parasite of spruce budworm, Choristoneura fumiferanae (Clem.).

Thomson, Hugh. M. January 1957 (has links)
In 1949 Bird and Whalen (5) noted the presence of a microsporidian in field populations of the spruce budworm Choristoneura fumiferana (Clem.). As studies of the mortality factors affecting the spruce budworm were intensified and attempts were made to work out life tables for this insect, it became increasingly important to know more about this protozoan. Although the Microsporidia have been known since the time of Pasteur and wall over 100 species have been described, little attention has been paid to the affects of these parasites on their hosts. This thesis is an attempt to identify this organism, elucidate its biology, and determine its affect upon the host.

The impact of chemicals upon parasite populations

Crowley, James William, January 1976 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 115-119).

Some nematode parasites from Egyptian carnivora.

Gibbs, Harold. C. January 1956 (has links)
Between January 1952 and May 1953 the United States Naval Medical Research Unit No. 3, stationed at Cairo, Egypt, undertook an extensive survey of the local fauna for the presence of schistosomes. As a result, a large number of helminths, other than schistosomes, was collected and some were forwarded to the Institute of Parasitology at Macdonald College for identification. This thesis deals with the classification of those nematodes collected from Carnivora. It is hoped that eventually a complete host list for all the parasites obtained in the area will be published.

The relationships of nutrition and parasitism.

Whitten, Lloyd. K. January 1957 (has links)
It has long been recognised that there is a close relationship between parasitism and nutrition although its true nature has not always been clear. Some of the relationships have been discussed in the reviews published by Lapage, (1937), von Brand, (1952), Hunter, (1953) and Smith, (1955). In the association as seen and described by field workers, there is likely to be some confusion of cause and effect because, in the human field, areas where parasitism is most serious - in the backward tropical and sub-tropical countries where overcrowding, lack of sanitation, poverty and illiteracy are the rule, both under-nutrition and malnutrition are almost universal.

Helminth Parasites in Mice of the Families Cricetidae and Zapodidae in Eastern Canada.

Schad, Gerard A. January 1952 (has links)
Until recently the helminth parasites of North American mice had received little study. Reports of single species from one host animal or small collections of host animals characterized the early work. Later, the surveys of Harkema (21) and Erickson (17), based on a greater number of hosts made available a more concrete basis for the study of helminths occurring in indigenous rodents. [...]

Studies on the effects of the fowl helminths Ascaridia galli (Nematoda) and Raillietina cesticillus (Cestoda) on growing chickens and observations on the development of the cysticercoid of R. cesticillus

Wisseman, Charles Louis January 2011 (has links)
Typescript, etc. / Digitized by Kansas State University Libraries

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