Parasitology Commons^™

Histogenesis In The Metacestode Of Echinococcus Vogeli And Mechanism Of Pathogenesis In Polycystic Hydatid Disease, Robert L. Rausch, Antonio D'Alessandro

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Histogenesis of the metacestode of Echinococcus vogeli was traced mainly in rodents inoculated intraperitoneally with finely minced infective vesicles. The fragments aggregated in the peritoneal cavity and coalesced, forming structures (plaques) from which primary vesicles arose. From primordia in their germinal tissue, exogenous vesicles developed, enlarged, and migrated outward to the surface of the laminated membrane, where they remained attached and proliferated. Each unit of vesicles so formed retained discrete identity and, within 6-8 months, acquired an adventitia; thereafter, exogenous multiplication ceased and endogenous proliferation supervened. Large numbers of daughter cysts arose in the germinal tissue lining chambers within the …

Recommendations From A Satellite Meeting (International Symposium To Commemorate The 90th Anniversary Of The Discovery Of Chagas Disease, April 11-16 1999, Rio De Janeiro, Brazil), Alejandro O. Luquetti, Aluízio Rosa Prata, Alvaro Moncayo, Alvaro Romanha, Ana Maria Jansen, Bianca Zingales, Carlos Morel, Carlos Ponce, Egler Chiari, Elisa Cupolillo, Elisa Ponce, Felipe Guhl, Hooman Momen, José Rodrigues Coura, Mario Steindel, Michael Miles, Michel Tibayrenc, Octavio Fernandes, Riva Oliveira, Rodrigo Zeledón, Sonia Gumes Andrade, Toby Vincent Barrett, Vanize Macêdo, Zigman Brener

Harold W. Manter Laboratory of Parasitology: Library Materials

During this symposium the standardization of the nomenclature of Trypanosoma cruzi strains was discussed, in a parallel session, with a view to facilitating the use and understanding of a common nomenclature that would serve not only taxonomists but the general community of researchers working with T. cruzi.

The diversity in the behavior and morphology of T. cruzi isolates was soon recognized after the discovery of Chagas disease. Since then a variety of biochemical and molecular techniques have revealed the great genetic diversity present in strains of this parasite. Different investigators have described this diversity by using various …

Margolisianum Bulbosum N. Gen., N. Sp. (Nematoda: Philometridae) From The Southern Flounder, Paralichthys Lethostigma (Pisces: Bothidae), In Mississippi Sound, Usa, Reginald B. Blaylock, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A new species of a philometrid nematode, Margolisianum bulbosum, is described from the subcutaneous tissue in the mouth (larvigerous females), head (males, ovigerous, and larvigerous females), and eye (preovigerous females) of the southern flounder, Paralichthys lethostigma, from Mississippi Sound. It is placed in a new genus diagnosed by the combination of 8 large, paired but separate cephalic papillae; no inner cephalic papillae; an esophagus with a separate, muscular anterior bulb; a prominent mononuclear esophageal gland; and variable, irregularly distributed cuticular bosses in the females, as well as a vestigial rectum, particularly in larvigerous females. Some female specimens exhibit …

The Life Cycle Of A Horsehair Worm, Gordius Robustus (Nematomorpha: Gordioidea), Ben Hanelt, John J. Janovy Jr.

John J. Janovy, Jr. Publications

Aspects of the life cycle of the nematomorph Gordius robustus were investigated. Gordius robustus larvae fed to Tenebrio molitor (Coleoptera: Tenebrionidae) readily penetrated and subsequently encysted in the posterior portion of the midgut wall. Parasite development was then arrested in each infected beetle. Upon feeding these cysts to laboratory-reared Gryllus firmus. worm larvae developed to adults in the cricket hemocoel. In an additional experiment, G. robustus larvae fed to G. firmus did not develop to adults. These findings are in contrast to other studies that found direct infection to be an alternative mode of infection. This experiment is the …

Flea News 57 (January 1999), Robert E. Lewis

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Miscellanea: The following article concerning plague in prairie dogs in Texas is taken from the July-August issue of the Technical Information Bulletin of the Armed Forces Pest Management Board.

Siphonaptera literature

American Society Of Parasitologists Newsletter, V. 21, No. 4, December 31, 1999, Scott Lyell Gardner

American Society of Parasitologists: Newsletter

An issue of the American Society of Parasitologists' quarterly newsletter, also called the Journal of Parasitology Newsletter.

Absence Of Tuberculosis In Free-Ranging Deer In Nebraska, David J. Steffen, David W. Oates, Mauritz C. Sterner, Vickie L. Cooper

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Lymph nodes from 271 white-tailed deer (Odocoileus virginianus) and mule deer (Odocoileus hemionus) in Nebraska (USA) were examined microscopically for tuberculoid lesions. Lymph nodes lesions in at least one node were found in 12 deer. Lesions were examined with Zeihl-Neelson acid fast stains and by polymerase chain reactions using M. bovis specific probes. No evidence of tuberculosis was found. The small granulomatous lesions were likely caused by other bacteria.

Meningeal Worm In Free-Ranging Deer In Nebraska, David W, Oates, Mauritz C. Sterner, David J. Steffen

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The meningeal worm (Parelaphostrongylus tenuis) was found in 22 (7%) of 300 white-tailed deer (Odocoileus virginianus) (257 adults, 43 fawns) examined from Nebraska (USA) during November 1996. None of 53 mule deer (Odocoileus hemionus) (47 adults and 6 fawns) examined were infected. Twenty-two white-tailed deer from 18 counties in eastern Nebraska were infected with Parelaphostrongylus tenuis. This is the first record of P. tenuis in white-tailed deer from this state.

Evolutionary Relationships Among The Protostrongylidae (Nematoda: Metastrongyloidea) As Inferred From Morphological Characters, With Consideration Of Parasite-Host Coevolution, Ramon A. Carreno, Eric P. Hoberg

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The phylogeny of nematodes in the family Protostrongylidae (Nematoda: Metastrongyloidea) was reconstructed by cladistic analysis of 28 binary and multistate characters derived from comparative morphology. Analyses were hierarchical, and examined (1) relationships among genera, including 13 ingroup taxa and Metastrongylidae as an outgroup (single tree, 78 steps, consistency index [CI]=0.705); and (2) relationships among genera and species groups including 21 ingroup taxa and Metastrongylus apri as an outgroup (single tree, 76 steps, CI=0.582). In the species-level tree, Protostrongylidae was divided into 2 major clades, one containing the subfamilies Muelleriinae (including the recently described Umingmakstrongylus pallikuukensis) Elaphostrongylinae, and the Varestrongylinae …

Three New Species Of Nothacrobeles (Nemata: Cephalobidae) From The Mojave Desert, California, I. T. De Ley, P. De Ley, J. G. Baldwin, M. Mundo-Ocampo, Steven A. Nadler

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Three new species of Nothacrobeles are described from localities in the Mojave Desert, southern California. Nothacrobeles triniglarus n. sp. is characterized by the presence of a long post-vulval sac and three tubular adoral projections. Both N. spatulatus n. sp. and N. nanocorpus n. sp. are smaller than any other known species within the genus. Nothacrobeles spatulatus n. sp. has labial probolae that are short and spatulate without a basal ridge, whereas those of N. nanocorpus n. sp. are flattened and plate-like. Furthermore, N. nanocorpus n. sp. is unique by its extremely short esophageal corpus (less than 25 μm long in …

Experimental Infections Of Muskoxen (Ovibos Moschatus) And Domestic Sheep With Umingmakstrongylus Pallikuukensis (Nematoda: Protostrongylidae): Parasite Development, Population Structure, And Pathology, Susan J. Kutz, Eric P. Hoberg, Lydden Polley

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Three captive muskoxen (Ovibos moschatus) were successfully infected with third-stage larvae of Umingmakstrongylus pallikuukensis digested or emerged from the slugs Deroceras reticulatum and D. laeve, for the first time completing the life cycle of this parasite under experimental conditions. The course of parasite development and patency was followed for 26 months post infection (p.i.) using fecal examinations and radiography. The prepatent periods in two of the muskoxen were 91 and 95 days and the patent period in one extended for 23 months. Larval production peaked 13–14 months p.i. On postmortem of two of the muskoxen at months …

Acanthocephala Of Cichlids (Pisces) In Lake Malawi, Africa, With A Description Of Acanthogyrus (Acanthosentis} Malawiensis Sp. N. (Quadrigyridae) From Labeo Cylindricus Peters, 1852 (Cyprinidae), Omar M. Amin, Sherman S. Hendrix

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Two species of acanthocephalans are reported from fishes collected during the summer of 1996 in the southeast arm of Lake Malawi (Lake Nyasa), East Africa. The common Acanthogyrus (Acanthosentis) tilapiae (Baylis, 1948) had infected 18 cichlid and 1 bagrid host species (all new host records) netted by divers wearing scuba gear around Harbor Island or caught by hook and line in deep water. The specimens of this parasite were some of the smallest ever reported for that species. Two males of a new species, Acanthogyrus (Acanthosentis) malawiensis, are described from 2 male Labeo cylindricus (Cyprinidae). This is the fifth …

Three New Species Of Eimeria From Bolivian Marsupials, S. Kimberly Heckscher, Brian A. Wickesberg, Donald Duszynski, Scott Lyell Gardner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Faecal samples collected from 300 Bolivian marsupials (Didelphimorphia: Didelphidae) between 1984 and 1993 were examined for coccidian parasites. Sporulated oocysts were present in the faeces of 50 (17%) marsupials representing 11 genera and 22 species. Three new species of Eimeria are described and named from six host species. One species occurred in Marmosops dorothea, Monodelphis domestica and Thylamys venustus, another in Micoureus constantiae constantiae and Micoureus constantiae budini and a third in Marmosops dorothea. A discriminant analysis performed on five quantitative oocyst measurements revealed similarities between the first and third Eimeria species because of similar sizes and …

Revisiting The Code: Clarifying Name-Bearing Types For Photomicrographs Of Protozoa, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

In 1988, Bandoni and Duszynski argued that individuals involved in the taxonomy and systematics of the coccidia should become familiar with the 3rd edition of the Code of Zoological Nomenclature (Ride et aI., 1985) and tried to reiterate the importance and utility of designating some form of type specimens and archiving them in appropriate museums. Their intent was to create an awareness among biologists working with coccidia (or other protists) of the value of designating type specimens. In the decade since their admonition, bench scholars working with coccidia, and journal editors to whom they submit their work, have begun …

Six New Eimeria Species From Vespertilionid Bats From North America, Donald W. Duszynski, Damien T. Scott, Jacqee Aragon, Ashley Leach, Travis Perry

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Twenty species of bats (Molossidae, Vespertilionidae) were collected from California, New Mexico, Oregon, South Carolina, Utah, and Baja California Norte (Mexico), and 29 of 404 (7%) animals, including Antrozous pallidus, Eptesicusfuscus, Myotis auriculus, Myotis californicus, Myotis ciliolabrum, Myotis evotis, Myotis lucifugus, Myotis thysanodes, Myotis vivesi, Myotis volans, Myotis yumanensis, and Nycticeius humeralis were infected with Eimeria spp., which represent 6 new species. Sporulated oocysts of a new species from A. pallidus are subspheroidal, 24.8 × 21.6 (22-27 × 19-24) μm with a polar granule and a large globular residuum. …

Eimeria From Bats Of Bolivia: Two New Species From Vespertilionid Bats, Donald W. Duszynski, Damien T. Scott, Xiaomin Zhao

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Between 1985 and 1987, fecal samples were collected from 71 bats representing 14 species (Desmodontidae, Molossidae, Noctilionidae, Phyllostomidae, Vespertilionidae) from 8 localities in 3 states (Beni, Pando, Santa Cruz) in Bolivia, South America. Of these, 2 black myotid bats (Vespertilionidae), Myotis nigricans, and 1 tent-making bat (Phyllostomidae), Uroderma magnirostrum, had oocysts in their feces that represent undescribed species of Eimeria. The new species from M. nigricans (2/4, 50%) has sporulated oocysts that are subspheroidal, 18.9 × 16.9 (17-23 × 14-20) μm, without a micropyle; oocyst residuum of 6-8 spheroidal globules and 1 highly refractile polar granule are …

Calicotyle Californiensis N. Sp. And Calicotyle Urobati N. Sp. (Monogenea: Calicotylinae) From Elasmobranchs In The Gulf Of California, Stephen A. Bullard, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Two new species of Calicotyle (Monocotylidae: Calicotylinae) are described from elasmobranchs in the western Gulf of California. Calicotyle californiensis n. sp. is described from a single specimen collected from a gray smoothhound shark (Mustelus californicus, Carcharhiniformes: Triakidae). It is distinguished from its congeners by the combination of having vaginal pores opening within the intercecal space, distal regions of the vaginae twisting, proximal regions of the vaginae fusing medially to form a kidney bean-shaped structure, and a relatively long male copulatory organ recurving three times and passing between the distal penis bulb and the seminal vesicle. Calicotyle urobati n. …

Structure, Biodiversity, And Historical Biogeography Of Nematode Faunas In Holarctic Ruminants: Morphological And Molecular Diagnoses For Teladorsagia Boreoarticus N. Sp. (Nemadota: Ostertagiinae), Dimorphic Cryptic Species In Muskoxen (Ovibos Moschatus), Eric P. Hoberg, Kirsten J. Monsen, Susan Kutz, Michael S. Blouin

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Discovery of the ostertagiine nematode Teladorsagia boreoarcticus n. sp. in muskoxen, Ovibos moschatus, from the central Canadian Arctic highlights the paucity of knowledge about the genealogical and numerical diversity of nematode faunas characteristic of artiodactyls at high latitudes across the Holarctic. Teladorsagia boreoarcticus is a dimorphic cryptic species distinguished from Teladorsagia circumcincta/Teladorsagia trifurcata in domestic sheep by a 13% divergence in the ND4 region of mitochondrial DNA, constant differences in the synlophe, and significantly longer esophageal valve, spicules, gubernaculum, and bursa. Teladorsagia boreoarcticus represents an archaic component of the North American fauna and may have a Holarctic …

A New Eimeria Species (Apicomplexa: Eimeriidae) Infecting Onychomys Species (Rodentia: Muridae) In New Mexico And Arizona, John A. Hnida, Wade D. Wilson, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Fecal samples from 3 species of Onychomys (Rodentia: Muridae) captured in New Mexico and Arizona were examined for coccidia. Six of the 59 (10%) were infected with a new species of Eimeria. Sporulated oocysts (n = 105) of this new species are subspheroidal, 17.4 × 16.1 (14-21 × 13-19) μm, with ellipsoidal sporocysts 10.4 × 5.7 (9-12 × 5-8) μm. This species occurred in 3 of 24 (13%) Onychomys arenicola, 2 of 31 (6%) Onychomys leucogaster from New Mexico, and 1 of 4 (25%) Onychomys torridus from Arizona. Isolates recovered from O. leucogaster and O. torridus were …

Review Of Catálogo De La Coleccíon Nacional De Helmintos By Rafael Lamothe-Argumedo, Luis Garcia-Prieto, David Osorio-Sarabia, Gerardo Pérez-Ponce De León (Unam, 1996), Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Review of Catálogo de la Coleccíon Nacional de Helmintos by Rafael Lamothe-Argumedo, Luis Garcia-Prieto, David Osorio-Sarabia and Gerardo Pérez-Ponce de León (UNAM, 1996).

Flea News 56 (July 1998), Robert E. Lewis

Flea News

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Siphonaptera literature

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Infectivity And Pathogenicity Of Baculovirus Penaei (Bp) In Cultured Larval And Postlarval Pacific White Shrimp, Penaeus Vannamei, Related To The Stage Of Viral Development, Hugh S. Hammer, Kenneth C. Stuck, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The infectivity and pathogenicity of the penaeid shrimp virus, Baculovirus penaei (BP), is influenced by the stage of viral development. This study consisted of a preliminary experiment which showed that nonoccluded virus administered per os is infective, followed by two infectivity experiments. In the first phase of each infectivity experiment, mysis stage larvae of Penaeus vannamei were inoculated with BP and samples of infected tissue were collected at various times postinoculation (p.i.). These samples were then used to inoculate either mysis or postlarval stage P. vannamei in the second phase of each experiment. Viral inocula prepared from patently infected tissues …

Echinocephalus Janzeni N. Sp. (Nematoda: Gnathostomatidae) In Himantura Pacifica (Chondrichthyes: Myliobatiformes) From The Pacific Coast Of Costa Rica And Mexico, With Historical Biogeographic Analysis Of The Genus, Eric P. Hoberg, Daniel R. Brooks, Helena Molina Ureña, Eric Erbe

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Echinocephalus janzeni n. sp. in the stingray, Himantura pacifica, is described from the eastern Pacific Ocean off the coasts of Costa Rica and southern Mexico. On the basis of the presence of 6 postanal caudal papillae, and modified annules anterior to the caudal alae in males, E. janzeni is most similar to Echinocephalus daileyi and Echinocephalus diazi. Specimens of E. janzeni are distinguished from those of E. daileyi by bilobed caudal alae and long cervical sacs that extend up to 65% of the length of the esophagus; E. janzeni is differentiated from E. diazi by the number of …

Review Of Meyer, Olsen And Schmidt's Essentials Of Parasitology, 6th Ed., By Murray D. Dailey; Brown, 1996, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Review of Meyer, Olsen and Schmidt's Essentials of Parasitology, 6th ed., by Murray D. Dailey; Brown, 1996. 289 p., ill., index. ISBN: 0-697-15983-3.

Major Histocompatibility Complex Class I- And Ii-Deficient Knock-Out Mice Are Resistant To Primary But Susceptible To Secondary Eimeria Papillata Infections, Marco L. Schito, Bill Chobotar, John R. Barta

Faculty Publications

Two distinct mechanisms seem to function in reducing oocyst output during Eimeria papillata infections in mice. For naive mice, immunity was afforded by a T-cell-independent gamma-interferon (IFN-γ) response mediated by natural killer (NK) cells. On reinfection, resistance was associated with T-cells and, to a lesser extent, perforin. To determine if antigen presentation with major histocompatibility complex (MHC) molecules was required to control oocyst production by NK cells during primary infection or by T-cells during secondary infection, mutant mice that lacked H2-IAβb (Aβb(-/-)) or β2-microglobulin (β2m(-/-)) were used. Since MHC molecules are required for the maturation of αβ T-cells, Aβb(-/-) and …

Preliminary Phylogenetic Analysis Of Subfamilies Of The Proteocephalidea (Eucestoda), Amilcar Arandas Rego, Alain De Chambrier, Vladimira Hanzelová, Eric P. Hoberg, Tomás Scholz, Peter Weekes, Marc Zehnder

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Cladistic analysis based on comparative morphology was used to examine the subfamily-level relationships within the cestode order Proteocephalidea. A single most parsimonious tree (70 steps, CI = 0.571; RC = 0.295; HI = 0.471) is consistent with monophyly for the Proteocephalidea and showed a relatively high consistency at the family level with the diagnosis of two major subclades. Unambiguous support for a Proteocephalidae subclade, including the Corallobothriinae, Proteocephalinae, Gangesiinae and Sandonellinae, and a Monticelliidae subclade, including the Marsypocephalinae, Zygobothriinae, Monticelliinae, Rudolphiellinae, Ephedrocephalinae and Othinoscolecinae was evident. Two subfamilies, the Acanthotaeniinae (historically in the Proteocephalidae) and Nupeliinae (historically in the Monticelliidae), …

Species Of Myxobolus (Myxozoa) From The Bulbus Arteriosus Of Centrarchid Fishes In North America, With A Description Of Two New Species, David K. Cone, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Three species of Myxobolus (Myxozoa, Myxosporea) occur in heart tissue of centrarchids. Myxobolus paralintoni Li and Desser, 1985 from Lepomis gibbosus in Algonquin Park and in Lake Erie, Ontario, has subcircular spores (in plane of spore length) in frontal view (11-13 μm long, 9-10 μm wide, and 5 μm thick) with a width-to-length ratio of 1:1.2. Myxobolus jollimorei n. sp. from Lepomis macrochirus in Lake Erie and in the Pascagoula River System, Mississippi, has subcircular spores (in plane of spore width) in frontal view (10.0-11.5 μm long, 12.0-14.5 μm wide, and 6.5-8.0 μm thick) with a width-to-length ratio of 1:0.8. …

Occurrence And Morphological Comparisons Of Campula Oblonga (Digenea: Campulidae), Including A Report From An Atypical Host, The Thresher Shark, Alopias Vulpinus [Research Notes], Ann M. Adams, Eric P. Hoberg, D. F. Mcalpine, S. L. Clayden

Harold W. Manter Laboratory of Parasitology: Faculty Publications

New host records for Campula oblonga Cobbold, 1858 from the common dolphin, Delphinus delphis L., and from the thresher shark, Alopias vulpinus (Bonnaterre), are reported herein. Campulids have not been reported previously from a host that was not a marine mammal. The excellent condition and small size of the gravid specimen and the diet and natural history of the thresher shark lead us to conclude that the digene was acquired from the consumption of infected fish. Specimens of C. oblonga from these two hosts and from harbor porpoises, Phocoena phocoena (L.), and from Dall's porpoises, Phocoenoides dalli (True), are compared, …

In Memoriam: Tang Chung Chang (C. C. Tang), 1905-1993, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Obituary of Tang Chung Chang (C. C. Tang), 1905-1993.

The Evolution Of Primate Malaria Parasites Based On The Gene Encoding Cytochrome B From The Linear Mitochondrial Genome, Ananias A. Escalante, Denise E. Freeland, William E. Collins, Altaf A. Lal

Harold W. Manter Laboratory of Parasitology: Library Materials

We report a phylogenetic analysis of primate malaria parasites based on the gene encoding the cytochrome b protein from the mitochondrial genome. We have studied 17 species of Plasmodium, including 14 parasitic in primates. In our analysis, four species were used for rooting the Plasmodium phylogenetic tree: two from closely related genera (Hepatocystis sp. and Haemoproteus columbae) and two other Apicomplexa (Toxoplasma gondii and Theileria parva). We found that primate malaria parasites form a monophyletic group, with the only exception being the Plasmodium falciparum–Plasmodium reichenowi lineage. Phylogenetic analyses that include two species …