Aerobic Metabolism in Nematode Parasites of the Alimentary Tract

Nature ◽  
1949 ◽  
Vol 163 (4153) ◽  
pp. 879-880 ◽  
Author(s):  
W. P. ROGERS
Keyword(s):  
Alimentary Tract ◽  
Aerobic Metabolism ◽  
Nematode Parasites

scholarly journals On the Relative Importance of Aerobic Metabolism in Small Nematode Parasites of the Alimentary Tract I. Oxygen Tensions in the Normal Environment of the Parasites

1949 ◽  
Vol 2 (2) ◽  
pp. 157 ◽  
Author(s):  
WP Rogers
Keyword(s):  
Small Intestine ◽  
Haemonchus Contortus ◽  
Alimentary Canal ◽  
Alimentary Tract ◽  
Aerobic Metabolism ◽  
Relative Importance ◽  
Nematode Parasites ◽  
Normal Environment ◽  
Oxygen Tensions

As a preliminary to the study of the relative importance . of aerobic mechanisms in the metabolism of Nippostrongylus muris, Nematodirus spathiger, Nematodirus filicollis, and Haemonchus contortus at oxygen pressures of the normal environmental fluids of these parasites, the determination of oxygen in the contents of the small intestine of the rat and sheep, and the abomasum of the sheep, has been carried out. The method which was used allowed measurements to be made close to the mucosa of the alimentary canal of anaesthetized animals in which the circulation was left intact, and the procedure ensured that conditions in the normal gut were very little disturbed.

A preliminary survey of the nematode parasites of some imported old-world monkeys

1973 ◽  
Vol 7 (3) ◽  
pp. 265-269 ◽  
Author(s):  
D. Owen ◽  
S. Casillo
Keyword(s):  
Macaca Mulatta ◽  
Alimentary Tract ◽  
Old World Monkeys ◽  
Preliminary Survey ◽  
Old World ◽  
Nematode Parasites ◽  
Faecal Samples

Faecal samples and blood films from 3 species of Old-World monkeys, Macaca mulatta, Macaca irus and Papio dogeura, were examined for the presence of nematode parasites. 8 separate groups, a total of 200 animals, were examined within 24 hours of their arrival at the premises of a primate importer. 8 species of nematode were found to be common inhabitants of the alimentary tract, and small numbers of microfilaria were detected in all groups.

scholarly journals On The Relative Importance of Aerobic Metabolism in Small Nematode Parasites of the Alimentary Tract II. the Utilization of Oxygen at Low Partial Pressures by Small Nematode Parasites of the Alimentary Tract

1949 ◽  
Vol 2 (2) ◽  
pp. 166 ◽  
Author(s):  
WP Rogers
Keyword(s):  
Small Intestine ◽  
Haemonchus Contortus ◽  
Alimentary Tract ◽  
Intestinal Parasites ◽  
Low Oxygen ◽  
Nematode Parasites ◽  
Partial Pressures ◽  
Consumption Rates

Nippostrongylus muris, Haemonchus contortus, Nematodirus spathiger, and N. filicollis are all capable of utilizing oxygen for respiratory purposes even when it is present at very low oxygen tensions. Thus with a partial pressure as low as 5 mm. of mercury the respiration of Nippostrongylus muris may reach 40 per cent. of its maximum rate, whereas Nematodirus spp. and H. contortus may respire at 25 and 12 per cent. of their maximum rates respectively. Further, the results indicate that in vivo the oxygen consumption rates may sometimes reach 80 per cent. of the maximum in vitro rate in the case of Nippostrongylus muris in the small intestine of the rat and 40 per cent. in the case of Nematodirus spp. in the small intestine of the sheep. Haemonchus contortus in the sheep abomasums probably respires at a relatively lower rate than either of the intestinal parasites in vivo.

A new hypothesis concerning attachment of parasitic nematodes (Spirurida: Acuarioidea) to the upper alimentary tract of birds

1991 ◽  
Vol 69 (7) ◽  
pp. 1829-1833 ◽  
Author(s):  
Cheryl M. Bartlett
Keyword(s):  
Cross Section ◽  
Alimentary Tract ◽  
External Surface ◽  
Parasitic Nematodes ◽  
Nematode Parasites ◽  
Recurvirostra Americana ◽  
New Hypothesis ◽  
Host Tissues

A gelatinous caplike structure found in vivo around the anterior end of two species of acuarioid nematode parasites (Skrjabinocerca prima Shikhobalova, 1930 and Skrjabinoclava inornatae Wong and Anderson, 1988) is described, termed a "pileus," and suggested as the means by which the nematodes attach to the oesophageal and proventricular mucosa of their bird hosts (Recurvirostra americana and Catoptrophorus semipalmatus inornatus, respectively). Nematodes were embedded in host tissues to the depth of the posteriormost extent of the pileus, which corresponded to the posteriormost extent of the cuticular cordons on the external surface of the anterior end of the nematode. Each cordon, C-shaped in cross section, may serve as a conduit that allows liquid nutrients in the lumen of the alimentary tract to seep into the nematode's mouth, thus enabling the parasite to feed when tightly sealed by the pileus into host tissues.

Nematode parasites of bark beetles (Scolytidae) in southern Manitoba, with descriptions of three new species of Sulphuretylenchus Rühm (Nematoda: Allantonematidae)

1989 ◽  
Vol 67 (10) ◽  
pp. 2497-2505 ◽  
Author(s):  
M. Tomalak ◽  
H. E. Welch ◽  
T. D. Galloway
Keyword(s):  
New Species ◽  
Host Species ◽  
Bark Beetles ◽  
Alimentary Tract ◽  
Malpighian Tubules ◽  
Nematode Parasites ◽  
Juvenile Stages ◽  
Three New Species ◽  
Ips Perroti ◽  
Provincial Park

Thirty-one species of bark beetles were collected from nine genera of host plants at 29 locations in southern Manitoba during 1980–1983. Of these bark beetle species, 21 were infected by as many as 56 species of nematodes, based on examination of adult and juvenile stages. There were 30 species of allantonematids, all recovered from the hosts' haemocoel. Fourteen rhabditid species were recovered from the alimentary tract of 15 host species. Twelve aphelenchoids were found in both the haemocoel (of 10 host species) and the Malpighian tubules (of 2 host species). Three new species of Sulphuretylenchus are described. Sulphuretylenchus pseudoundulatus sp.nov. parasitized Polygraphus rufipennis (Kirby) collected in the Whiteshell Provincial Forest. Sulphuretylenchus nopimingi sp.nov. parasitized Pityokteines sparsus (LeConte) collected in Nopiming Provincial Park. Sulphuretylenchus posteruteri sp.nov. parasitized Ips perroti Swaine in the Belair Provincial Forest.

Safe grazing for weaned lambs

1987 ◽  
Vol 1987 ◽  
pp. 81-81
Author(s):  
Griffiths S. Margaret ◽  
C. James
Keyword(s):  
Perennial Ryegrass ◽  
Alimentary Tract ◽  
Poor Performance ◽  
Anthelmintic Treatment ◽  
Dairy Heifers ◽  
Nematode Parasites ◽  
Safe Area ◽  
Young Cattle ◽  
Different Levels ◽  
Contaminated Area

'Clean’ grazing is accepted as a successful method of overcoming poor performance in lambs and young cattle caused by nematode parasites of the alimentary tract and would virtually eliminate the need for regular anthelmintic treatment. However,it is impracticable on many grass farms and especially where sheep predominate. ‘Safe’ grazing offers a realistic alternative but has not been fully tested under field conditions. Two 2.8 ha paddocks of a predominantly perennial ryegrass sward were managed during the spring and summer of 1985 to produce two different levels of pasture nematode infestation for weaned lamb grazing during the Autumn of that year. Both areas were grazed by non-lactating mature ewes until 5 February 1985. The safe area(S) was then closed for two silage cuts and grazed for 11 days during early August by replacement dairy heifers. The contaminated area(C) was set stocked with 21 cross-bred ewes and their May born Suffolk x lambs per ha between 29 April and 28 August. Dung samples were collected from lambs grazing C at 8,12 and 16 weeks of age. Herbage and dung samples were collected from S and C at weaning (28 August) and 14 day intervals until lambs were removed from trial on 31 October. 138 lambs were divided into two groups by weight and condition at weaning and set stocked at 25/ha on S and C following an anthelmintic treatment. Lambs were selected for slaughter to produce carcasses of MLC fat class 2 or 3.

Mechanisms and practical use of the bactericidal effects of ozone and ozonated oils

2020 ◽  
pp. 45-52
Author(s):  
S. Schetinin
Keyword(s):  
Inflammatory Diseases ◽  
Aerobic Metabolism ◽  
Active Oxygen ◽  
The Body ◽  
Bactericidal Action ◽  
Ozone Therapy ◽  
Energy Substrates ◽  
Bactericidal Effects ◽  
Viral Nature

The analysis of the clinical and immunological effectiveness of ozone therapy is carried out. The mechanism of the bactericidal action of ozone in the treatment of infectious and inflammatory diseases of a bacterial and viral nature is analyzed. Ozonation of oils leads to the formation of a complex and heterogeneous cascade of components. Ozonides provide the body with some prolonged supply of active oxygen to maintain aerobic metabolism and the required level of energy substrates.

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