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A Guideline For The Preparation Of Species Descriptions In The Eimeriidae, Donald Duszynski, Patricia G. Wilber Apr 1997

A Guideline For The Preparation Of Species Descriptions In The Eimeriidae, Donald Duszynski, Patricia G. Wilber

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Members of the suborder Eimeriina (phylum Apicomplexa: class Sporozoea: order Eucoccidiorida) have complex 1 or 2 host life cycles that involve endogenous development in the tissues of vertebrates or invertebrates and exogenous development in an oocyst, usually outside the host(s). Because tissue stages are logistically difficult or even impossible to obtain in natural (wild) host-parasite systems, the vast majority (> 98%) of species in this parasite complex are known only from the structure of their sporulated oocyst. Unfortunately, the quality of these species descriptions is uneven because no guidelines are available for workers in the field to follow. Here we …


A New Coccidian From Acomys Cahirinus Desmarest, 1819, From Evolution Canyon, Lower Nahal Oren, Mount Carmel, Israel, Lee Couch, Leon Blaustein, Donald W. Duszynski, Georgy Shenbrot, Eviatar Nevo Apr 1997

A New Coccidian From Acomys Cahirinus Desmarest, 1819, From Evolution Canyon, Lower Nahal Oren, Mount Carmel, Israel, Lee Couch, Leon Blaustein, Donald W. Duszynski, Georgy Shenbrot, Eviatar Nevo

Harold W. Manter Laboratory of Parasitology: Faculty Publications

In 1994, fresh fecal samples were collected and examined for coccidian parasites from 43 spiny mice (Acomys cahirinus) and from 60 wood mice (Apodemus mystacinus). The 2 genera of rodents inhabit an area in Lower Nahal Oren, Mount Carmel, Israel, known as Evolution Canyon, which consists of opposite-facing slopes that are geologically identical, but micro-climatically very different. Acomys cahirinus is found primarily on the warmer and drier south-facing slope (SFS), whereas A. mystacinus primarily inhabits the cooler and wetter north-facing slope (NFS). None of the samples from the A. mystacinus contained coccidia, but 6 of 43 …


Susceptibility To Taura Syndrome Virus Of Some Penaeid Shrimp Species Native To The Gulf Of Mexico And The Southeastern United States, Robin M. Overstreet, Donald V. Lightner, Ken W. Hasson, Stacey Mcilwain, Jeffrey M. Lotz Mar 1997

Susceptibility To Taura Syndrome Virus Of Some Penaeid Shrimp Species Native To The Gulf Of Mexico And The Southeastern United States, Robin M. Overstreet, Donald V. Lightner, Ken W. Hasson, Stacey Mcilwain, Jeffrey M. Lotz

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Experimental studies demonstrated that Penaeus setiferus, but not Penaeus aztecus or Penaeus duorarum, could be killed by Taura syndrome virus (TSV). However, specimens of P. setiferus that survived infection and both P. aztecus and P. duorarum at least 79 days postexposure that did not demonstrate gross signs of infection were shown to harbor virus by bioassay using Penaeus vannamei, a highly susceptible target host. Consequently, all three of those penaeids native to the southeast United States can serve as carriers or reservoir hosts of TSV without necessarily exhibiting disease. Infections in P. setiferus took longer to cause …


Phylogenetic Analysis Of Nematodes Of The Genus Pratylenchus Using Nuclear 26s Rdna, Luma Al-Banna, Valerie M. Williamson, Scott Lyell Gardner Feb 1997

Phylogenetic Analysis Of Nematodes Of The Genus Pratylenchus Using Nuclear 26s Rdna, Luma Al-Banna, Valerie M. Williamson, Scott Lyell Gardner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

We used nucleotide sequences of the large subunit ribosomal genes (26S rDNA) to examine evolutionary relationships among species of the genus Pratylenchus (Order: Tylenchida, Family: Pratylenchidae), commonly known as root-lesion nematodes. Ten species of Pratylenchus were studied including, P. penetrans, P. crenatus, P. minyus, P. vulnus, P. thornei, P. musicale, P. coffeae, P. bexincisus, P. scribneri, and P. brachyurus. The species Hirschmanniella belli, Meloidogyne javanica, Heterorhabditis bacteriophora, Nacobbus eberruns, Radopholus similis, and Xiphinema index were used as outgroups. Based on parsimony analyses of approximately 307 …


Myxobolus Mississippiensis N. Sp. (Myxosporea) From Gills Of Lepomis Macrochirus In Mississippi, David K. Cone, Robin M. Overstreet Feb 1997

Myxobolus Mississippiensis N. Sp. (Myxosporea) From Gills Of Lepomis Macrochirus In Mississippi, David K. Cone, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Myxobolus mississippiensis n. sp. is described from gill lamellae of the bluegill (Lepomis macrochirus) inhabiting the Pascagoula River System, Mississippi. Fresh spores measure 16.4-18.7 μm long, 3.9-6.2 μm wide, and 4.7-6.2 μm thick. Spore width to length ratio is 1:3.2. Polar capsules are 5.5-7.8 μm long and 1.5-2.3 μm wide, with 9-10 filament coils that when extruded measure 42.1 ± 4.2 μm. This parasite is unique among known species of Myxobolus,/i> in having spores that are lenticular in frontal view.


Cucullanus Palmeri N. Sp. (Nematoda: Cucullanidae) From The Batfish Ogcocephalus Nasutus In The Gulf Of Mexico, John L. Crites, Robin M. Overstreet Feb 1997

Cucullanus Palmeri N. Sp. (Nematoda: Cucullanidae) From The Batfish Ogcocephalus Nasutus In The Gulf Of Mexico, John L. Crites, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Cucullanus palmeri n. sp. is described from the shortnose batfish, Ogcocephalus nasutus, in the Gulf of Mexico. This species is anatomically most similar to Cucullanus gendrei but differs from it in having a shorter esophagus and longer tail. Males differ in having a smaller gubernaculum and a different arrangement of a lateral caudal papilla. Cucullanus palmeri is readily distinguished from Cucullanus lophii, also from a lophiform fish host, in that the deirids and excretory pore are not posterior to the posterior end of the esophagus like in C. lophii.


Phosphorylation Within The Amino-Terminal Acidic Domain I Of The Phosphoprotein Of Vesicular Stomatitis Virus Is Required For Transcription But Not For Replication, Asit K. Pattnaik, Leroy Hwang, Tong Le, Nathan Englund, Manjula Mathur, Tapas Das, Amiya Banerjee Jan 1997

Phosphorylation Within The Amino-Terminal Acidic Domain I Of The Phosphoprotein Of Vesicular Stomatitis Virus Is Required For Transcription But Not For Replication, Asit K. Pattnaik, Leroy Hwang, Tong Le, Nathan Englund, Manjula Mathur, Tapas Das, Amiya Banerjee

School of Veterinary and Biomedical Sciences: Faculty Publications

Phosphorylation by casein kinase II at three specific residues (S-60, T-62, and S-64) within the acidic domain I of the P protein of Indiana serotype vesicular stomatitis virus has been shown to be critical for in vitro transcription activity of the viral RNA polymerase (P-L) complex. To examine the role of phosphorylation of P protein in transcription as well as replication in vivo, we used a panel of mutant P proteins in which the phosphate acceptor sites in domain I were substituted with alanines or other amino acids. Analyses of the alanine-substituted mutant P proteins for the ability to support …


Parasite Biodiversity And Emerging Pathogens: A Role For Systematics In Limiting Impacts On Genetic Resources, Eric P. Hoberg Jan 1997

Parasite Biodiversity And Emerging Pathogens: A Role For Systematics In Limiting Impacts On Genetic Resources, Eric P. Hoberg

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Emergence of pathogenic organisms continues as a threat to overall biodiversity and genetic resources. Macroparasites including helminths constitute a potential threat to economically important resources in agriculture and conservation biology. Limitation of this threat can be achieved through survey and inventory for biodiversity and the application of systematics to understand the host range , biogeography and history of faunas. Systematics constitutes the foundation for recognition of endemic and introduced elements of faunas and the basis for predicting the behavior of pathogens introduced to new ecological settings or host groups. The basis for emergence of pathogens has both a deep historical …


Isoelectric Focusing Of Soluble Proteins In The Characterization Of Species And Isolates Of Nematodirus (Nematoda: Trichostrongyloidea), Lora G. Rickard, Eric P. Hoberg, Donna M. Mulrooney, Gary L. Zimmerman Jan 1997

Isoelectric Focusing Of Soluble Proteins In The Characterization Of Species And Isolates Of Nematodirus (Nematoda: Trichostrongyloidea), Lora G. Rickard, Eric P. Hoberg, Donna M. Mulrooney, Gary L. Zimmerman

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Isoelectric focusing was performed on extracts from Nematodirus spathiger, Nematodirus filicollis, Nematodirus helvetianus, and three geographic isolates of Nematodirus battus. Gender-specific differences were noted within species; however, the overall protein profile of each species and isolate was distinct and reproducible and allowed unequivocal differentiation. A coefficient of similarity (Sm) for males of each species and isolate was calculated, and a dendrogram, based on evaluation of Sm by the unweighted pair-group method with arithmetic means, was produced. Although cluster analysis of the three isolates of N. battus indicates the North American and Weybridge isolates are similar, interpretation …


Genetic Susceptibility Of Cultured Shrimp (Penaeus Vannamei) To Infectious Hypodermal And Hematopoietic Necrosis Virus And Baculovirus Penaei: Possible Relationship With Growth Status And Metabolic Gene Expression, Acacia Alcivar-Warren, Robin M. Overstreet, Arun K. Dhar, Keith Astrofsky, William H. Carr, James Sweeney, Jeffrey M. Lotz Jan 1997

Genetic Susceptibility Of Cultured Shrimp (Penaeus Vannamei) To Infectious Hypodermal And Hematopoietic Necrosis Virus And Baculovirus Penaei: Possible Relationship With Growth Status And Metabolic Gene Expression, Acacia Alcivar-Warren, Robin M. Overstreet, Arun K. Dhar, Keith Astrofsky, William H. Carr, James Sweeney, Jeffrey M. Lotz

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Offspring of four crosses (I, II, III, and IV) of Penaeus vannamei from known high- and low-growth families were challenged with infectious hypodermal and hematopoietic necrosis virus (IHHNV) and Baculovirus penaei (BP) to compare their susceptibility to these viral agents and examine the genetic component involved in disease resistance or susceptibility. Family crosses were made using broodstock from five families developed by the U.S. Marine Shrimp Farming Program. The prevalence of IHHNV infection was highest in cross I and lowest in cross III. Cross I was developed using male and female broodstock from the low-growth family 1.6, and cross III …


Paradigm Shifts And Tapeworm Systematics, Eric P. Hoberg, Scott Lyell Gardner, Ronald A. Campbell Jan 1997

Paradigm Shifts And Tapeworm Systematics, Eric P. Hoberg, Scott Lyell Gardner, Ronald A. Campbell

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The phylogeny of tapeworms provided the focus for the 2nd International Workshop for Tapeworm Systematics, which led to the development of novel hypotheses from the ordinal to the species level for taxa of the Eucestoda. Conceptual roots for this meeting ema­nated from discussions initiated during the Ist Workshop chaired by Claude Vaucher and Jean Mariaux at the Museum of Natural History, Geneva in 1993.


Coccidia From Bats (Chiroptera) Of The World: A New Eimeria Species In Pipistrellus Javanicus From Japan, Donald W. Duszynski Jan 1997

Coccidia From Bats (Chiroptera) Of The World: A New Eimeria Species In Pipistrellus Javanicus From Japan, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Fecal samples from 56 Japanese bats representing 6 species in 2 families were examined for coccidian oocysts. Two of the 56 (< 4%) were infected with coccidia; however, only 1 animal was infected with sufficient numbers of sporulated oocysts to allow the description of a new species of Eimeria. Sporulated oocysts (n = 150) of this new species are subspheroidal, 20.3 x 18.1 (16-25 x 14-21) μm, with ellipsoidal sporocysts 10.6 x 6.6 (8-12 x 5-8) μm; this species occurred in 1 of 4 (25%) pipistrelles, Pipistrellus javanicus (Gray, 1838) (Vespertilionidae). Oocysts of another coccidium, also an Eimeria sp., were found in 1 of 3 (33%) horseshoe bats, Rhinolophus ferrumequinum (Schreber, 1774) (Rhinolophidae), but only 2 sporulated oocysts were seen, which is not enough …


Parasitological Data As Monitors Of Environmental Health, Robin M. Overstreet Jan 1997

Parasitological Data As Monitors Of Environmental Health, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

When an appropriate fish host is selected, analysis of its parasites offers a useful, reliable, economical, telescoped indication or monitor of environmental health. The value of that information increases when corroborated by another non-parasitological technique. The analysis of parasites is not necessarily simple because not all hosts serve as good models and because the number of species, presence of specific species, intensity of infections, life histories of species, location of species in hosts, and host response for each parasitic species have to be addressed individually to assure usefulness of the tool. Also, different anthropogenic contaminants act in a distinct manner …


Parasitological Data As Monitors Of Environmental Health, Robin M. Overstreet Jan 1997

Parasitological Data As Monitors Of Environmental Health, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

When an appropriate fish host is selected, analysis of its parasites offers a useful, reliable, economical, telescoped indication or monitor of environmental health. The value of that information increases when corroborated by another non-parasitological technique. The analysis of parasites is not necessarily simple because not all hosts serve as good models and because the number of species, presence of specific species, intensity of infections, life histories of species, location of species in hosts, and host response for each parasitic species have to be addressed individually to assure usefulness of the tool. Also, different anthropogenic contaminants act in a distinct manner …


Transfer Of Immunity Against Hymenolepis Diminuta Parasites In Mice, Jerome F. Atta-Fynn Jan 1997

Transfer Of Immunity Against Hymenolepis Diminuta Parasites In Mice, Jerome F. Atta-Fynn

Masters Theses

The potential transfer of resistance against the rat tapeworm, Hymenolepis diminuta, from adult BALB/c mice to their young, was tested by comparing the worm burdens of 24 experimentally infected pups from previously infected females to 14 experimentally infected pups from uninfected females. The mean number of worms recovered, mean weight of recovered worms and frequency of mice pups with eggs of the parasite in their feces were significantly lower in infected pups from infected mothers than in infected pups from uninfected mothers. The lower worm burden observed in the infected pups from infected mothers suggested that the resistance to …


503 Phase I Radioimmunotherapy (Rit) Study Of 90y-Cc49 Monoclonal Antibody (Mab) Therapy In Patients With Advanced Non-Small Cell Lung Cancer (Nsclc), Francisco Robert, Ruby Meredith, Michael Khazaeli, Charles Russell, William Grizzle, John Newsome, Mansoor Saleh Jan 1997

503 Phase I Radioimmunotherapy (Rit) Study Of 90y-Cc49 Monoclonal Antibody (Mab) Therapy In Patients With Advanced Non-Small Cell Lung Cancer (Nsclc), Francisco Robert, Ruby Meredith, Michael Khazaeli, Charles Russell, William Grizzle, John Newsome, Mansoor Saleh

Haematology and Oncology, East Africa

503 Phase I radioimmunotherapy (RIT) study of 90Y-CC49 monoclonal antibody (MAb) therapy in patients with advanced non-small cell lung cancer (NSCLC) × Close The Infona portal uses cookies, ie strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms …


The Mathematical Modelling Of The Ross River Virus Transmission, Yoon-Hong Choi Jan 1997

The Mathematical Modelling Of The Ross River Virus Transmission, Yoon-Hong Choi

Theses: Doctorates and Masters

Ross River virus is one of the most severe communicable diseases in Australia. During the 1995/96 outbreak of Ross River virus in south-western Australia, over 1 ,300 human cases were reported. Since the symptoms of the disease are sometimes too weak to be diagnosed, it is important to determine the number of humans who actually contracted the virus during outbreaks. To do this, several mathematical models with different hypotheses are constructed and analysed mathematically. The threshold mathematical conditions of these models suggest that as well as the size of the vector mosquito population, the population size and length of viraemia …


Flea News 53 (December 1996), Robert E. Lewis Dec 1996

Flea News 53 (December 1996), Robert E. Lewis

Flea News

Robert E. Lewis to retitre from Iowa State University effective January 1, 1997

Book reviews

Obituaries: Robert S. Traub (October 26, 1916-December 21, 1996); Dorald Mervin Allred (July 11, 1923-June 20, 1996)

Miscellanea

Siphonaptera literature

Report: Use of an orally administered insect development inhibitor (Lufenuron) as a flea control agent in the California ground squirrel, Spermophilus beecheyi by Richard M. Davis


Phylogenetic Analysis Of Opisthadena (Digenea: Hemiuridae), Virginia León-Règagnon, Gerardo Pérez-Ponce De León, Daniel R. Brooks Dec 1996

Phylogenetic Analysis Of Opisthadena (Digenea: Hemiuridae), Virginia León-Règagnon, Gerardo Pérez-Ponce De León, Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Systematic study of the closely related hemiurid genera Mitrostoma, Neopisthadena and Opisthadena revealed that Opisthadena cortesi is a junior synonym of Opisthadena dimidia and Opisthadena fujianensis and Opisthadena marina are species inquirendae. Phylogenetic analysis of the 7 recognized species, based on 21 transformation series derived from comparative morphologic characters, produced a single tree with a consistency index of 0.735. The five species of the genus Opisthadena constitute a monophyletic clade and Neopisthadena habei is their sister group. Mitrostoma nototheniae is the sister group of the other 6 members of the clade. Geographic distribution suggests an ancient circum-Pacific distribution of …


Cellular Basis Of Decreased Immune Responses To Pneumococcal Vaccines In Aged Mice, Manju Garg, Wei Luo, Alan M. Kaplan, Subbarao Bondada Nov 1996

Cellular Basis Of Decreased Immune Responses To Pneumococcal Vaccines In Aged Mice, Manju Garg, Wei Luo, Alan M. Kaplan, Subbarao Bondada

Microbiology, Immunology, and Molecular Genetics Faculty Publications

Previously, model systems were developed in our laboratory to study murine immune responses to the 23-valent pneumococcal polysaccharide vaccine Pnu-Imune, both in vivo and in vitro (M. Garg and B. Subbarao, Infect. Immun. 60:2329-2336, 1992; M. Garg, A. M. Kaplan, and S. Bondada, J. Immunol. 152: 1589-1596, 1994). Using these systems, we found that aged mice did not respond to the vaccine in vivo or in vitro. Cell separation studies showed that the unresponsiveness of the aged spleen cells to the vaccine was not due to an intrinsic B-cell defect or to T-cell-mediated immunosuppression but resulted from an accessory cell …


Hemorrhagic Gastritis In Free-Living Rodents In Idaho, Patricia G. Wilber, Donald W. Duszynski, B. Van Horne Oct 1996

Hemorrhagic Gastritis In Free-Living Rodents In Idaho, Patricia G. Wilber, Donald W. Duszynski, B. Van Horne

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Between February 1992 and March 1994, four species of rodent from the Snake River Birds of Prey Area near Boise, Idaho (USA) were necropsied. Hemorrhagic gastritis was observed in 16 of 131 Townsend’s ground squirrels (Spermophilus townsendii), one of 11 Ord’s kangaroo rats (Dipodomys ordii) and the one Great Basin pocket mouse (Perognathus parvus) evaluated. No lesions were observed in 14 white-footed deer mice (Peromyscus maniculatus). Tissue from one Townsend’s ground squirrel was negative for Helicobacter sp.-like bacteria.


Characterization Of P39, A Borrelia Burgdorferi Specific Protein, Jill M. Troyer Oct 1996

Characterization Of P39, A Borrelia Burgdorferi Specific Protein, Jill M. Troyer

Theses and Dissertations in Biomedical Sciences

Borrelia burgdorferi, the causative agent of Lyme disease, expresses a species specific, 39 kiloDalton protein of unknown function called P39. This protein is highly immunogenic and the presence of anti-P39 antibodies in patient sera is used as an indicator of B. burgdorferi infection. P39 is also a candidate for vaccine developement due to conserved expression of P39 among B. burgdorferi isolates. Since little is presently known about this important molecule, the present study was designed to characterize P39 and was carried out in six separate investigations. First, infectious and noninfectious isolates of B. burgdorferi were established in vitro, and …


Interleukin-10 Inhibits Tumor Metastasis Through An Nk-Cell Dependent Mechanism, Li-Mou Zheng, David M. Ojcius, F. Garaud, C. Roth, E. Maxwell, Z. Li, H. Rong, J. Chen, X. Y. Wang, J. J. Catino, I. King Aug 1996

Interleukin-10 Inhibits Tumor Metastasis Through An Nk-Cell Dependent Mechanism, Li-Mou Zheng, David M. Ojcius, F. Garaud, C. Roth, E. Maxwell, Z. Li, H. Rong, J. Chen, X. Y. Wang, J. J. Catino, I. King

All Dugoni School of Dentistry Faculty Articles

Interleukin-10 (IL-10) is a recently described pleiotropic cytokine secreted mainly by type 2 helper T cells. Previous studies have shown that IL-10 suppresses cytokine expression by natural killer (NK) and type 1 T cells, thus down-regulating cell-mediated immunity and stimulating humoral responses. We here report that injected IL-10 protein is an efficient inhibitor of tumor metastasis in experimental (B16-F10) and spontaneous (M27 and Lox human melanoma) metastasis models in vivo at doses that do not have toxic effects on normal or cancer cells. Histological characterization after IL-10 treatment confirmed the absence of CD8+ and CD4+ T cells and macrophages at …


In Memoriam: John Teague Self (1906-1995), John J. Janovy Jr. Aug 1996

In Memoriam: John Teague Self (1906-1995), John J. Janovy Jr.

John J. Janovy, Jr. Publications

Obituary of John Teague Self, parasitologist, 1906-1995.


Flea News 52 (July 1996), Robert E. Lewis Jul 1996

Flea News 52 (July 1996), Robert E. Lewis

Flea News

Editorial, Robert E. Lewis

Miscellanea

Announcement

Siphonaptera literature

New flea species


Neuronal Toxicity Of Humoral Factors From Patients With Diabetic Neuropathy And Mechanism Of Neuronal Death On Cultured Adrenergic Neurons: Studies Of Autoimmune Pathogenesis In Diabetic Neuropathy, Dong Liu Jul 1996

Neuronal Toxicity Of Humoral Factors From Patients With Diabetic Neuropathy And Mechanism Of Neuronal Death On Cultured Adrenergic Neurons: Studies Of Autoimmune Pathogenesis In Diabetic Neuropathy, Dong Liu

Theses and Dissertations in Biomedical Sciences

Diabetic neuropathy is an extremely common medical problem because of the high frequency of diabetes and its complications. Diabetic neuropathy consists of not one, but many patterns of nerve injury, each potentially with its own discrete pathogenic mechanisms. Evidence is accumulating that indicates autoimmunity plays a role in diabetic peripheral neuropathy. However, the significance of immunopathogenesis of diabetic neuropathy is as yet unclear.

Using the N1E-115 mouse neuroblastoma cell line (NB) as a model of the adrenergic autonomic neuron, we found that sera of IDDM patients with neuropathy inhibit growth and differentiation of adrenergic neurons in culture (Pittenger et al, …


A Survey Of The Coccidian Parasites Of Reptiles From Islands Of The Galápagos Archipelago: 1990-1994, Lee Couch, Paul A. Stone, Donald W. Duszynski, Howard L. Snell, Heidi M. Snell Jun 1996

A Survey Of The Coccidian Parasites Of Reptiles From Islands Of The Galápagos Archipelago: 1990-1994, Lee Couch, Paul A. Stone, Donald W. Duszynski, Howard L. Snell, Heidi M. Snell

Harold W. Manter Laboratory of Parasitology: Faculty Publications

From 1990 through 1994, fecal samples were collected and examined for coccidian parasites from 26 giant land tortoises Geochelone nigra, from 715 lava lizards Tropidurus spp., from 139 land iguanas Conolophus subcristatus, and from 128 marine iguanas Amblyrhynchus cristatus, all of which inhabit various islands in the Galápagos Archipelago. None of the samples from A. cristatus or from C. subcristatus was infected with coccidia. Only 1 of 26 (4%) G. nigra was infected with a single Eimeria species that we describe here as new. A total of 262 of 715 (37%) individuals representing 3 species of Tropidurus …


A New Species Of Acanthobothrium Van Beneden, 1849 (Eucestoda: Tetraphyllidea: Onchobothriidae) In Dasyatis Longus Garman (Chondrichthyes: Myliobatiformes: Dasyatididae) From Chamela Bay, Jalisco, Mexico, Scott Monks, Daniel R. Brooks, Gerardo Pérez-Ponce De León May 1996

A New Species Of Acanthobothrium Van Beneden, 1849 (Eucestoda: Tetraphyllidea: Onchobothriidae) In Dasyatis Longus Garman (Chondrichthyes: Myliobatiformes: Dasyatididae) From Chamela Bay, Jalisco, Mexico, Scott Monks, Daniel R. Brooks, Gerardo Pérez-Ponce De León

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A new species of Acanthobothrium in Dasyatis longus from Chamela Bay, Jalisco, Mexico, is a member of a presumed clade of species diagnosed by being anapolytic or nearly so, having more than 100 testes per proglottis, with immature and mature proglottides wider than long to square, aspinose scolex, muscular bothridia fused to the scolex at their posterior ends, H- to V-shaped ovaries, relatively short symmetrical to asymmetrical ovarian arms that extend anteriorly to, or nearly to, the cirrus sac, and vitellaria arranged in fields rather than a single row of follicles. The new species most closely resembles Acanthobothrium terezae from …


Two New Species Of Tetraphyllidean Cestodes In Himantura Pacifica (Chondrichthyes: Myliobatiformes: Dasyatididae) From The Northwest Coast Of Costa Rica, Fernando Marques, Daniel R. Brooks, Helena Molina Ureña Apr 1996

Two New Species Of Tetraphyllidean Cestodes In Himantura Pacifica (Chondrichthyes: Myliobatiformes: Dasyatididae) From The Northwest Coast Of Costa Rica, Fernando Marques, Daniel R. Brooks, Helena Molina Ureña

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Two new species of tetraphyllidean cestodes inhabiting Himantura pacifica from the northwest coast of Costa Rica are apparently most closely related to species inhabiting Himantura schmardae from the Atlantic coast of Colombia. Acanthobothroides pacificus n. sp. differs from Acanthobothroides horsoni, the only other species in the genus, primarily by having smaller lateral (98-123 μm rather than 168-198 μm long) and medial (handles 92-116 μm rather than 162-168 μm long) hooks, and more testes (up to 125 rather than up to 97) per proglottis. The generic diagnosis of Acanthobothroides is modified to include the presence of a small inner prong …


Behavioral Basis Of Second Intermediate Host Specificity Among Four Species Of Haematoloechus (Digenea: Haematoloechidae), Scott D. Snyder, John J. Janovy Jr. Feb 1996

Behavioral Basis Of Second Intermediate Host Specificity Among Four Species Of Haematoloechus (Digenea: Haematoloechidae), Scott D. Snyder, John J. Janovy Jr.

John J. Janovy, Jr. Publications

Cercarial behavior patterns were examined in four species of frog lung flukes (Haematoloechus spp.). Cercariae of Haematoloechus complexus, Haematoloechus medioplexus, Haematoloechus longiplexus, and Haematoloechus varioplexus were exposed to three species of experimental arthropods and an inanimate control. The number of cercariae attached to an experimental host at 5 min postexposure was recorded. Haematoloechus longiplexus and H. complexus cercariae attached to experimental hosts at higher rates than cercariae of H. medioplexus and H. varioplexus. Cercariae of H. longiplexus attached to experimental hosts in approximately the same numbers as H. complexus, but H. longiplexus penetrated only damselfly naiads, …