Parasitology Commons^™

The Effect Of Haloxon And Thiabendazole On The Free-Living Stages Of Haemonchus Contortus, Gary Mccallister

Theses and Dissertations

This study was undertaken to determine the effect of thiabendazole and haloxon on the free-living stages of Haemonchus contortus and to determine the suitability of the free-living stages for their use in primary drug evaluation for chemotherapy or for chemical control of free-living stages. Cleaned unembryonated ova, embryonated ova, first-, second-, third-, and exsheathed third-stage larvae were exposed to suspensions of 5.0%, 1.0%, 0.5%, 0.25%, 0.12%, 0.05%, and water soluble concentrations of each drug for exposure times of 0.25, 0.50, 1.0, 2.0, 4.0, 8.0, and 16.0 hours at pH 7.0 and 25° C. Survival was assessed by observing any subsequent …

Location Of Grapevine Fanleaf And Yellow Mosaic Virus Particles In Xiphinema Index, D. J. Raski, Armand R. Maggenti, N. O. Jones

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Particles of fanleaf and yellow mosaic viruses are reported in the lumen of the esophagus of Xiphinerna index. Differences in cuticular morphology suggest differences in charged receptor sites which may offer an explanation for virus location and orderly arrangement.

Cathetocephalus Thatcheri Gen. Et Sp. N. (Tetraphyllidea: Cathetocephalidae) Fam. N. From The Bull Shark, Murray D. Dailey, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Cathetocephalus thatcheri gen. et sp. n. is described from the spiral valve of the bull shark, Carcharhinus leucas (Valenciennes), taken in the Gulf of Mexico and the Atlantic coast of Florida. A new family is erected for the new genus. The species most closely resembles Pillersium owenium Southwell, 1927, in that both possess a scolex which is perpendicular to the long axis of the strobila. It differs, however, in having a single neck and holdfast organ rather than a bifurcate neck with two bothridia. Also, the surfaces of the scolex differ from those of P. owenium by possessing fleshy papilliform …

Some Species Of Lecithaster Lühe, 1901 (Digenea: Hemiuridae) And Related Genera From Fishes In The Northern Gulf Of Mexico, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Lecithaster helodes n. sp. is described from Mugil curema and M. cephalus. It differs from the closely related L. mugilis Yamaguti, 1970 by having four rather than three ovarian lobes and other minor differences. Discussions and measurements are presented for L. confusus Odhner, 1905, L. leiostomi Overstreet, 1970, Hysterolecitha elongata Manter, 1931, Aponurus pyriformis (Linton, 1910) n. comb., and A. elongatus Siddiqi & Cable, 1960. Branchadena Linton, 1910 is considered a synonym of Aponurus Looss, 1907. New host records are listed for some of the above hemiurid trematodes. Leurodera ocyri Travassos, Frietas & Bihrnheim, 1965 and L. inaequalis Travassos, …

Seasonal Carbon Dioxide And Oxygen Concentrations In The Dens Of Hibernating Mammals (Sciuridae), D. D. Williams, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

This paper reports seasonal changes in respiratory gases in artificial dens of two species of hibernators indigenous to central and northern Alaska: Citellus parryi ablusus(Osgood) and Marmota broweri Hall and Gilmore (Sciuridae).

Structure Of The Oocysts And Excystation Processes Of Four Eimeria Spp. (Protozoa: Eimeriidae) From The Colorado Pika, Ochotona Princeps, Donald W. Duszynski, John T. Brunson

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Oocysts of Eimeria banffensis Lepp, Todd, and Samuel, 1972, Eimeria cryptobarretti sp. n., Eimeria princepsis sp. n., and Eimeria calentinei sp. n. are described from the Colorado pika, Ochotona princeps, collected from 3 mountain sites in Colorado. Subspherical oocysts of E. banffensis measure 23 to 34 by 18 to 25 μ (mean 27.6 by 23.0 μ) with ovoid sporocysts 10 to 16 by 7 to 10 μ (mean 12.5 by 8.5 μ). A micropyle, oocyst residuum, and polar granule are absent, but a sporocyst residuum, Stieda body, and substiedal body are present. The ellipsoidal oocysts of E. cryptobarretti measure …

A Proposed Mechanism Of Action For In Vitro Excystation Of Two Species Of Coccidia, William Ronald Jolley

Theses and Dissertations

Excystation of coccidian oocysts is accomplished in vitro by altering wall permeability with CO2 and a reducing agent, then activating the enclosed sporozoites with a solution of trypsin and bile. Elucidation of the mechanism of action of the CO2-reducing agent treatment was the basic intent of this study. Oocysts of Eimeria stiedae (rabbit) and E. tenella (chicken) were tested for the presence of an excystation-associated enzyme by incubating sporulated oocysts in fluids extracted from variously treated oocysts, and by carbon-14 labelling; the effect of CO2 -reducing agent treatment on oocyst walls was investigated by titration with acid or base for …

Ec73-1907 Internal Parasites Of Cattle, D. L. Ferguson

University of Nebraska-Lincoln Extension: Historical Materials

Extension Circular 73-1907 is about internal parasites in cows and how they affect cattle production.

Internal parasites continue to be one of the major problems confronting cattle producers. In 1965, the United States Department of Agriculture estimated that internal parasites in cattle caused an average annual loss of $161,678,000. The internal parasites responsible for the annual loss are listed below.

Anaplasmosis. .$ 36,001,000

Coccidiosis . . . .14,569,000

Worm Parasites .100,046,000

Liver Flukes . . . 3,022,000

Trichomoniasis .. 8,040,000

In cattle the effects of internal parasites will be well camouflaged. However, additional feed will be required to reach market …

Natural Control Of Insect Pests On The Ord?, P J. Michael

Journal of the Department of Agriculture, Western Australia, Series 4

Current trials conducted by the Department of Agriculture at Kununurra are indicating that there may be an important place for biological control of insect pests of the Ord River Irrigation Area.

A Survey Of Ectoparasites From Microtus Ochrogaster Ochrogaster (Wagner), Peromyscus Leucopus Noveboracensis (Fisher), And Cryptotis Parva Harlani (Say), Fred Basolo Jr.

Masters Theses

Ectoparasites were taken from 50 white footed deer mice, Peromyscus leucopus noveboracensis (Fisher), 50 prairie voles, Microtus ochrogaster ochrogaster (Wagner), and 11 least shrews, Cryptotis parva harlani (Say), within a five mile radius of Charleston, Illinois from 23 January 1973 through 25 June 1973. A total number of 4,242 ectoparasites were recovered; 2,395 from Microtus ochrogaster, 542 from Peromyscus leucopus, and 1,305 from Cryptotis parva. The major groups of ectoparasites and their percent recovery were: Acari (excl. of Metastigmata) 81.50%, Metastigmata 2.95%, Anoplura 15.50% and Siphonaptera 0.50%. A study of the ectoparasites recovered revealed representatives of 18 …

Gastro-Intestinal And Abdominal Helminths Of White-Tailed Deer (Odocoileus Virginianus) From Carroll And Jo Daviess Counties In Northern Illinois, Jeffrey Joseph Hodge

Masters Theses

Forty-four white-tailed deer shot by hunters in November and December, 1971, in Carroll and Jo Daviess counties in northwestern Illinois were necropsied for gastro-intestinal and abdominal helminths. Five species of gastro-intestinal nematodes were found: Gongylonema pulchrum, Ostertagia odocoilei, Haemonchus contortus, Trichuris ovis and Nematodirus sp. Setaria yehi, a filiariad nematode, was found in the abdominal cavity. Moniezia benedeni was the only cestode found. No trematodes were recovered. Differences in numbers and kinds of parasites found in northern Illinois and southern Illinois are discussed. Prevalence increased with host age for certain species of parasites and decreased or …

Lice Of Public Health Importance And Their Control, Harry D. Pratt, Kent S. Littig

Harold W. Manter Laboratory of Parasitology: Library Materials

Lice have been intimately associated with man for centuries. Infestations with lice occur today in the United States and many other countries despite great efforts to maintain high standards of public health. Public health agencies are often called upon if infestations include or expose large groups of people, particularly those in public institutions such as schools, jails, hospitals, or homes for the aged.

The three sucking lice that infest humans are: the body louse (Pedlculus humanus humanus), the head louse (Pediculus humanus capitis), and the crab louse (Pthirus pubis). The body louse is the …

Anthelmintics For Nematode Parasites Of Fish: I. Control Of Sterliadochona Pedispicula In Salmo Gairdnerii By Diethyl 2-Chlorovinyl Phosphate And 2,2 Dichlorovinyl Dimethyl Phosphate Pellets, A. R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Tests indicate that the oral administration of diethyl 2-chlorovinyl phosphate (SD1836) and 2,2 dichlorovinyl dimethyl phosphate (DDVP) plastic-incorporated pellets significantly reduces the intestinal nematode parasite Sterliadochona pedispicula in wild rainbow trout. No evidence of fish toxicity was noted with the treatments and dosages tested.

Anthelmintics For Nematode Parasites Of Fish: Ii. Aqueous Anthelmintic Bath Treatments Using Diethyl 2-Chlorovinyl Phosphate And 2,2 Dichlorovinyl Dimethyl Phosphate For Control Of Sterliadochona Pedispicula In Salmo Gairdnerii, A. R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The toxicity of diethyl 2-chlorovinyl phosphate (SD1836) and 2,2 dichlorovinyl dimethyl phosphate (DDVP) was tested as an "in-water" treatment of rainbow trout and in vitro against the internal nematode parasite of fish, Sterliadochona peclispicula. As an "in-water" anthelmintic treatment SD1836 was 100% effective at concentrations of 25 fL liters/liter for 24 hr and 5 μ liters/liter for 72 hr; no toxic effects to rainbow trout were noted with these treatments.

Acanthobothrium Urolophi Sp. N., A Tetraphyllidean Cestode (Oncobothriidae) From An Australian Stingaree, Gerald D. Schmidt

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Acanthobothrium urolophi sp. n. is described from a common stingaree, Urolophus testaceus, from South Australia. It differs from all other species in being apolytic and acraspedote, in having hooks 105-115 μ- long, one accessory sucker 80-90 wide on each bothridinm, and 40-72 testes in two longitudinal rows.

Parasites Of Some Penaeid Shrimps With Emphasis On Reared Hosts, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Information is presented about parasites and commensals of penaeid shrimps, allowing those who rear shrimps and those who are interested in associated organisms of shrimp to have a better knowledge of the organisms that are or may be associated with brown, white, and pink shrimps. It covers common and rare organisms and diseases, primarily in the northern Gulf of Mexico, listing several previously unreported species including an undescribed gregarine, a larval nematode (Spirocarnallanus pereirai), a commensal nematode (Leptolaimus sp.), a leech (Myzobdella lugubris), a blue-green alga (Schizothrix calcicola), a hydroid (Obelia bicuspidata …

Plagioporus Hypentelii Sp. N. (Trematoda: Opecoelidae) From The Hogsucker, Hypentelium Nigricans (Lesueur) (Osteichthys: Catostomidae), Sherman S. Hendrix

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Plagioporus hypentelii sp. n. (Trematoda: Opecoelidae) is described from the intestine of the hogsucker, Hypentelium nigricans (LeSueur), in streams of Adams County, Pennsylvania. It most closely resembles P. serotinus Stafford, 1904, but differs from it chiefly in its less elongate shape, smaller size, smaller testes, ovary, and eggs, straight cirrus sac, in hosts and geographic location of the hosts.

Morphometric Variation In Aphelenchus Avenae Bastian, 1865 With Varied Nutrition And Time, John P. Kline

Masters Theses

The effect of varied time, nutritional media, and species of fungus on taxonomic characters (L, a, b₁, c, and V) of Aphelenchus avenae was investigated. The effect of these ecological conditions on morphometrics was variable; however, these characters varied significantly with increased time, decreased nutritional media, and species of fungus. The greatest number of morphometric changes occurred with increased time, and the fewest with species of fungus. With changing environmental conditions, “V” values were the most stable character.

Parasites From Gizzard Shad, Dorosoma Cepedianum, In Lake Charleston, Illinois, Francis M. Yabai Kaikumba

Masters Theses

Eighty gizzard shad (Dorosoma cepedianum) from Lake Charleston, Charleston, Illinois were examined for parasites. Eight fish were parasitized. Three fish contained the acanthocephalan Tanaorhamphus longirostris, three fish harbored cestodes of the genus Glaridacris and two fish had the nematode Camallanus oxycephalus. The latter is here reported for the first time from gizzard shad. Twenty fish were infected with the fungus Saprolegnia sp. The numbers of helminth parasites harbored by shad are less than reported for other forage fish. However, the incident of parasitism reported in this study is greater than that reported by previous workers.

Digenetic Trematodes Of The Chesapeake Bay, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

It is safe to say that the taxonomy of Digenea from fishes and invertebrates from Chesapeake Bay is in need of considerable attention. First, the knowledge of what flukes are present is lacking, with the exception of a few scattered papers dealing with a limited number of species. A few such papers about adult Digenea from fishes are by Hopkins (1) and Anderson (2) and about larval forms from second intermediate hosts are by Stunkard and Uzmann (3), Dillon (4), and Perkins (5). A list of the Digenea from Chesapeake Bay compiled by D. E. Zwerner and A. R. Lawler …

Observations On Chromosomes Of Dicrostonyx Torquatus Stevensoni Nelson And Chromosomal Diversity In Varying Lemmings = Untersuchungen An Den Chromosomen Von Dicrostonyx Torquatus Stevensoni Nelson Und Chromosomale Unterschiede Bei Halsbandlemmingen, Virginia R. Rausch, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

English abstract: The cytogenetic characteristics of the varying lemming, Dicrostonyx torquatus stevensoni, (2n = 34), were investigated, and diploid chromosomal numbers were reported for four other nominal subspecies (exsul, nelsoni, richardsoni, and rubricatus) of the torquatus-group in North America. The diploid complements ranged from 30 to 44 chromosomes, and the fundamental number from 50 to 55. Chromosomal polymorphism was observed in all forms. In cross-breeding experiments, the mating of F₁ progeny was not productive. The findings support the zoogeographic concept that populations of Dicrostonyx became fragmented or displaced southward during Würm time, with …

Herpetomonas Megaseliae Sp. N. (Protozoa: Trypanosomatidae) From Megaselia Scalaris (Loew, 1866) Schmitz, 1929 (Diptera: Phoridae), Pierre M. Daggett, John J. Janovy Jr., Norman R. Dollahon

John J. Janovy, Jr. Publications

A new intestinal trypanosomatid was found parasitizing Megaselia scalaris. Forms with posterior kinetoplasts occurred in both natural infections and cloned cultures, but not in experimental infections. Average size and morphological variation were reduced in experimental infections with cloned stocks, compared to natural infections. A growth comparison was made between Herpetomonas muscarum and H. megaseliae. Differences in day of peak population, maximum numbers, and total time of survival were observed in culture. Attempts to infect Drosophila melanogaster with H. megaseliae were unsuccessful.

Observations On Some Natural-Focal Zoonoses In Alaska, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

In Alaska, as in arctic and subarctic Eurasia, important natural-focal zoonoses are rabies, brucellosis, tularemia, trichinosis, alveolar hydatid disease, cystic hydatid disease, and diphyllobothriasis. Most frequently affected are aboriginal peoples in villages within biocenoses that include the natural parasite-host assemblages. Pathogens are transmitted to man from wild animals and from dogs, which are important as synanthropic hosts. The prevalence and rate of transmission of certain pathogens in natural foci are related to the numerical density of small mammals, especially rodents, which may themselves be involved as hosts, and on which the numbers of their predators ultimately depend, such as is …

Contribution À L'Étude Des Microphallidae Travassos, 1920 (Trematoda). Xxvi. -De Quelques Espèces D'Alaska, Stéphane Deblock, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

French abstract: La faune des Trématodes Microphallidés d'Alaska étudiée comporte neuf espèces différentes, distribuées en quatre genres: 1° Microphallus oblonga Ching, 1965, M. pygmaeum (Levinsen, 1881) et M. similis (Jaegerskioeld, 1900). 2° Levinseniella (Lev.) propinqua Jaegerskioeld, 1907. 3° Maritrema acadiae (Swales, 1933). M. afanassjewi Belopolskaia, 1952. M. gratiosum Nicoll, 1907. M. megametrios Deblock et Rausch, 1968 et enfin, 4° Pseudospelotrema sp. n° 1.

Les caractéristiques morphologiques essentielles de ces Trématodes sont décrites, sauf celles de la dernière espèce citée qui a déjà fait l'objet d'une étude antérieure.

English abstract: Microphallid trematodes of nine species, representing four genera, have …

The Effects Of Different Gases On Excystation Of Coccidian Oocysts, James B. Jensen

Theses and Dissertations

Excystation of coccidian oocysts is a diphasic process where CO2 and suitable reducing agents cause changes in oocyst wall permeability (phase I) allowing the entrance of trypsin and bile which activate the sporozoites (phase II). This project was an indirect study of the mechanism of CO2 action by the substitution of NO, NO2, N2O, H2S, SO2 , CH4, NH3 and 8M urea in place of CO2. Changes in oocyst wall permeability of Eimeria stiedae, E. bovis and E. tenella were determined by incubation with the reagents and cysteine HCl followed by treatment with trypsin and bile to initiate activation of …

Two Species Of Acanthocephala From Australian Fishes With Description Of Arhythmacanthus Paraplagusiarum Sp. N., Brent B. Nickol

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Two South Australian garfish, Hemirhamphus melanochir, collected near Adelaide, South Australia, harbored 14 and 15 specimens of Micracanthorhynchina hemirhamphi. Arhythmacanthus paraplagusiarum sp. n. is described from 10 specimens collected from Paraplagusia guttata taken from Moreton Bay, Brisbane, Queensland. A. paraplagusiarum differs from other species of the genus in length of the enlarged subapical proboscis hooks. These hooks are 120 to 132 μm long in females and 113 to 120 μm long in males of A. paraplagusiarum, 188 to 210 μm long in A. fusiformis, and 60 μm long in A. septacanthus. Males of A. paraplagusiarum …

The Effects Of Temperatures And Chemicals On The Oocysts Of Eimeria Stiedae, Charles Larry Keehner

Theses and Dissertations

A study was made of the effects of temperatures and chemicals on the unsporulated and sporulated oocysts of Eimeria stiedae. In general, oocysts were affected by temperatures lower than -10 C and above +39 C, while normal development occurred between these temperatures. Unsporulated oocysts were more tolerant to temperature extremes, as they survived up to 8 days at 39 C and 12 days at -28 C. Sporulated oocysts were killed after 24 hours storage at 39 C and 4 days at -28 C. Oocyst resistance to low temperatures was not improved if unsporulated and sporulated oocysts were conditioned before and …

A New Microphallid Trematode From The Blue Crab In The Northern Gulf Of Mexico, Robin M. Overstreet, Harriet M. Perry

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Levinseniella (Monarrhenos) capitanea n. sp. is described from metacercariae on the hepatopancreas and gonads of Callinectes sapidus Rathbun from Louisiana and Mississippi. It can be distinguished from all other members of the genus by possessing 11–21 atrial pockets and an acetabulum larger than the oral sucker, not possessing a pharynx nor well-developed ceca, and being 1.9–3.6 mm in length. Heardlevinseniella Yamaguti, 1971 is considered a synonym of Levinseniella Stiles & Hassal, 1901.

Review Of: Infectious Diseases Of Wild Mammals; Parasitic Diseases Of Wild Mammals; And Infectious And Parasitic Diseases Of Wild Birds, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Review of: Infectious Diseases of Wild Mammals, edited by John W. Davis, Lars H. Karstad and Daniel O. Trainer; Iowa State University Press, 1970. 421 p. Parasitic Diseases of Wild Mammals, edited by John W. Davis and Roy C. Anderson; Iowa State University Press, 1971. 364 p. Infectious and Parasitic Diseases of Wild Birds, edited by John W. Davis, Roy C. Anderson. Lars Karstad and Daniel O. Trainer; Iowa State University Press, 1971. 344 p.

The Comparative Histochemistry Of The Infective Oncospheres Of Oochoristica Osheroffi Meggitt, 1934, And Oochoristica Scelopori Voge And Fox, 1950, (Cyclophyllidea: Linstowiidae) With Notes On The Origins Of The Egg Membranes, Gary R. Coulter

Loma Linda University Electronic Theses, Dissertations & Projects

Infective oncospheres of Oochorlstica osheroffi and Oochoristica scelopori were compared using fifteen histochemical tests. Vital stains were also used.

Carnoy’s-fixed gravid proglottids were vacuum-embedded in a paraffin-piccolyte mixture and cut transversely at 6 microns. Sections were tested for the presence of phosphatases, proteins, sclerotin precursors, nucleic acids, carbohydrates and acid mucopolysaccharides.

Oncospheres were histochemlcally very similar. Heavy concentrations of mucoproteins and glycoproteins were detected in the oncospheral coat of O. scelopori. Acid phosphatase was found in the embryophore of O. osheroffi, but could not be demonstrated in O. scelopori. No evidence of a sclerotized egg capsule was …