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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.
11

Studies on Entamoeba Invadens.

Lesser, Elliott. January 1951 (has links)
The genus Entamoeba Casagrandi et Barbagollo, 1895, from the standpoint of pathogenicity and number of different hosts affected is the most important of all the genera of parasitic amoebae. [...]
12

Acanthocephala of seals at the Magdalen Islands.

Montreuil, Paul L. Jacques. January 1955 (has links)
Seals and fish of some parts of the Gulf of St. Lawrence are frequently, and sometimes heavily infected with Acanthocephala of the genus Corynosoma. The present knowledge of this genus in north-eastern American mammals is incomplete and in some cases inaccurate. [...]
13

Nematode Parasites of Egyptian Reptiles.

Belle, Edward A. January 1954 (has links)
The material forming the basis of this work was obtained from reptiles, mainly lizards and snakes, from Egypt and nearby places. The collection was made time to time from January 1952 to May 1953 by members of the Department of Helminthology of the U.S. Naval Medical Research Unit No. 3, Cairo Egypt.
14

A revision of the subfamily Anisakinae with special reference to Porrocaecum decipiens and its affinities.

Myers, Betty-June. January 1959 (has links)
An ascaroid worm is common in the stomach of various seals in the eastern North Atlantic Ocean. Its infective larva occurs in a variety of ground fish in the Gulf of St. Lawrence and the seals become infected by eating the infected fish. As the incomplete knowledge of this nematode has caused considerable confusion over its nomenclature and relationships, it is proposed to make it the type species of the new genus Phocanema.
15

Observations and Comments on the Reaction of Trichinella Spiralis.

Chambers, Harriet A. January 1954 (has links)
The original purpose of this investigation was to trace the migration of the immature Trichinella spiralis larvae from the intestinal tract to the skeletal musculature of the host, in this instance, the golden hamster, Cricetus auratus Waterhouse. The migratory route of the intestinal larvae has been a subject of international zoological debate since 1895, when Askanazy and Cerfontaine independently published refutations of Leuckart's "active migration theory" (1860). [...]
16

The metazoan parasites of the Heterosomata of the Gulf of the St. Lawrence.

Ronald, Keith. January 1956 (has links)
Note: Missing pages i-iii, 135-182. / There has been little investigation of the parasitic fauna of the North Atlantic Ocean bordering Canada. The literature reveals that no one group of fish has ever been covered by workers in this area, a situation not found in European waters of the Atlantic. Attempts have been made at classification and distribution studies, some of which introduced new species to taxonomy, but always concerning mixed groups of fish. The first of these was by Stafford (1904) whose work unfortunately, was signally incomplete.
17

Studies on Dochmoides stenocephala (Railliet, 1884), the northern carnivore hookworm.

Gibbs, Harold. C. January 1958 (has links)
This work was prompted as the result of a survey done on the parasites of sled dogs in the vicinity of Fort Simpson, N.W.T., during the summer of 1956. The incidence of hookworm infection was found to be 95 per cent in 70 dogs examined. This parasite has been found in dogs from points; all across northern Canada and as far north as Ellesmere Island (Cameron et al. 1940). It has also been reported by Law (1933) from arctic fox taken in the region of Hudson Bay who also mentioned that Hadwen had found it in Alaskan dogs. This suggests that the parasite is particularly well adapted for life in a northern environment.
18

Haematozoa from some common amphibians of Quebec.

Shah, Jessie. A. January 1959 (has links)
Little work has been done on the blood parasites of amphibians in Canada - surprisingly little, when it is considered how much has been written on haematozoa from these animals in the neighbouring U.S.A. as well as in more distant countries, and that frogs, well known as a source of trypanosomes and haemogregarines, are among the commonest laboratory animals. Nevertheless, two earlier surveys in Quebec resulted in the discovery of two cosmopolitan trypanosomes and a widely distributed species of Lankesterella, and a number of new species of Microfilaria, Trypanosoma, Haemogregarina, Haemoproteus, Dactylosoma and Plasmodium.
19

In vitro studies of studies of Histomonas meleagridis, a parasitic protozoan of turkeys.

McGregor, John. K. January 1955 (has links)
Theobold Smith (23) in 1895 described an amoeboid protozoan parasite of turkeys which he identified as the aetiological agent of the disease enterohepatitis (blackhead). Smith tentatively described it as a species of enteric amoeba. Tyzzer (26) later suggested a definite classification for this organism in a new genus. The species name he proposed was Histomonas (gen. nov.) meleagridis (Smith 1895) Tyzzer, 1919. Incidence of the fatal condition referred to as enterohepatitis results in heavy annual losses to commercial turkey and poultry producers.
20

Studies on Entamoeba invadens.

Meerovitch, Eugene. B. January 1955 (has links)
The earliest mention of an amoeba, causing disease in reptiles, was by Ratcliffe and Geiman (1933), when they discovered that acute intestinal disease in certain lizards and snakes was associated with an amoeba, which they designated Endamoeba sp. Ratcliffe and Geiman isolated the organism in cultures and later they reported experimental infection of water snakes of the genus Natrix with cysts of the amoeba obtained from their cultures (Ratcliffe and Geiman 1934a).

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