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Articles 1 - 28 of 28
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Phylogenetic Relationships Among Species Of Stilestrongylus Freitas, Lent And Almeida, 1937 (Trichostrongyloidea: Heligmonellidae: Nippostrongylinae), Parasites Of Myomorph Rodents (Rodentia: Muridae) In The Neotropics, Gerardo Perez-Ponce De Leon, Scott Lyell Gardner, Jorge Falcon-Ordaz
Phylogenetic Relationships Among Species Of Stilestrongylus Freitas, Lent And Almeida, 1937 (Trichostrongyloidea: Heligmonellidae: Nippostrongylinae), Parasites Of Myomorph Rodents (Rodentia: Muridae) In The Neotropics, Gerardo Perez-Ponce De Leon, Scott Lyell Gardner, Jorge Falcon-Ordaz
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The phylogenetic relationships of 14 species of Stilestrongylus were analyzed using the comparative morphology of 21 characters. We obtained 2 shortest trees of 50 steps, with a consistency index of 0.540 and 25 apomorphic character states. Ingroup monophyly was supported on these trees by 2 and 3 synapomorphies, respectively, and the ingroup was defined by the following characters: greater number of ventral ridges relative to the number of ridges dorsally, asymmetric bursa, and externodorsal rays differing in size. Sister-group relationships among Stilestrongylus and the other genera designated as outgroups are relatively consistent with those postulated by Durette-Desset’s in a classification …
A New Species Of Eimeria (Apicomplexa, Eimeriidae) From The Weedy Sea Dragon Phyllopteryx Taeniolatus (Osteichthyes: Syngnathidae), Steve J. Upton, M. Andrew Stamper, Andrea L. Osborn, Sonia L. Mumford, Laura Zwick, Michael J. Kinsel, Robin M. Overstreet
A New Species Of Eimeria (Apicomplexa, Eimeriidae) From The Weedy Sea Dragon Phyllopteryx Taeniolatus (Osteichthyes: Syngnathidae), Steve J. Upton, M. Andrew Stamper, Andrea L. Osborn, Sonia L. Mumford, Laura Zwick, Michael J. Kinsel, Robin M. Overstreet
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
A new species of intestinal coccidian is described from the weedy or common sea dragon Phyllopteryx taeniolatus housed at the New England Aquarium in Boston and at the Shedd Aquarium in Chicago, USA. Live oocysts of Eimeria phyllopterycis sp. n. are spherical, 30.9 (28.0-34.4) μm, with a thin, single-layered wall. Both a micropyle and oocyst residuum are absent and a large polar granule is sometimes present. Sporocysts are ellipsoidal and elongate, 24.3 × 10.4 (23.4-25.6 × 9.2-11.2) μm, with Stieda and substieda bodies; shape index (length/width) 2.33 (2.14-2.70). A sporocyst residuum is present, consisting of numerous granules of various sizes. …
Halipegus Eschi N. Sp. (Digenea: Hemiuridae) In Rana Vaillanti From Guanacaste Province, Costa Rica, Derek A. Zelmer, Daniel R. Brooks
Halipegus Eschi N. Sp. (Digenea: Hemiuridae) In Rana Vaillanti From Guanacaste Province, Costa Rica, Derek A. Zelmer, Daniel R. Brooks
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Halipegus eschi n. sp. is described from the esophagus of Rana vaillanti from Guanacaste Province, Costa Rica. The new species differs from other known species of Halipegus on the basis of relative testis size, lateral extent of the uterus, vitelline follicle arrangement, egg size, and polar filament length.
Emergence Of Third-Stage Larvae Of Umingmakstrongylus Pallikuukensis From Three Gastropod Intermediate Host Species, Susan K. Kutz, Eric P. Hoberg, Lydden Polley
Emergence Of Third-Stage Larvae Of Umingmakstrongylus Pallikuukensis From Three Gastropod Intermediate Host Species, Susan K. Kutz, Eric P. Hoberg, Lydden Polley
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
We investigated the emergence of third-stage larvae (L3) of Umingmakstrongylus pallikuukensis from the slugs Deroceras laeve, Deroceras reticulatum, and the snail Catinella sp. in the laboratory and from D. laeve on the tundra. Third-stage larvae emerged from 8 of 8 D. laeve and 8 of 8 D. reticulatum housed at 20°C in darkness and from 9 of 10 D. laeve and 5 of 5 Catinella sp. housed at 21°C with 10-12 hours of light/day. Larvae emerged from D. laeve and D. reticulatum over a wide range of infection intensities (2-179 and 20-65, respectively), and the patterns of emergence …
Reassignment Of Lamanema From Nematodirinae To Molineinae (Nematoda: Trichostrongyloidea) (Research Notes), Lora G. Rickard, Eric P. Hoberg
Reassignment Of Lamanema From Nematodirinae To Molineinae (Nematoda: Trichostrongyloidea) (Research Notes), Lora G. Rickard, Eric P. Hoberg
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The monospecific Lamanema historically has been assigned to the Nematodirinae within the Molineidae. Inconsistencies in morphological characters, within a phylogenetic context for Nematodirinae, led to a re-evaluation of the putative relationships and taxonomic placement of Lamanema. Among 7 putative synapomorphies for Nematodirinae, Lamanema possesses only one, large eggs. Large eggs, sporadically present in phylogenetically disparate taxa of trichostrongyles, are equivocal with respect to placement of Lamanema; it is considered that possession of this single homoplasious character alone is insufficient justification to retain the genus in Nematodirinae. Affinities with the Trichostrongylidae (Cooperiinae or Haemonchinae) have also been proposed; however, …
Relationships Of Nematodirus Species And Nematodirus Battus Isolates (Nematoda: Trichostrongyloidea) Based On Nuclear Ribosomal Dna Sequences, Steven A. Nadler, Eric P. Hoberg, Deborah S.S. Hudspeth, Lora G. Rickard
Relationships Of Nematodirus Species And Nematodirus Battus Isolates (Nematoda: Trichostrongyloidea) Based On Nuclear Ribosomal Dna Sequences, Steven A. Nadler, Eric P. Hoberg, Deborah S.S. Hudspeth, Lora G. Rickard
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Nuclear ribosomal sequence data from the internal transcribed spacers (ITS-1 and ITS-2), 5.8S subunit, and regions of the 18S and 28S genes were used to investigate sequence diversity among geographic samples of Nematodirus battus, and to infer phylogenetic relationships among Nematodirus species. Phylogenetic analysis of these data yielded strong support for relationships among species, depicting Nematodirus helvetianus and Nematodirus spathiger as sister-taxa and a clade of these two species and Nematodirus filicollis. This tree is consistent with caprine bovids as ancestral hosts, with a subsequent host shift to Bovinae in N. helvetianus. Eleven of 14 N. battus …
Phylogeny Of The Species Of The Genus Litomosoides (Nematatoda: Onchocercidae): Evidence Of Rampant Host Switching, Sara V. Brant, Scott Lyell Gardner
Phylogeny Of The Species Of The Genus Litomosoides (Nematatoda: Onchocercidae): Evidence Of Rampant Host Switching, Sara V. Brant, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Filarioid nematodes of the genus Litomosoides occur in the abdominal and (or) thoracic cavities of marsupials, rodents, and bats of the Nearctic and Neotropical regions. In this study, the phylogenetic relationships among these nematodes were estimated with a parsimony analysis of morphological characters derived from species descriptions. This nonweighted analysis produced 20 shortest trees. The monophyly of the genus was not supported in that Litomosoides thomomydis and Litomosoides westi failed to group with the other members of the genus. When these 2 taxa (parasites of pocket gophers) were excluded, monophyly of Litomosoides was supported by 2 synapomorphies (structure of the …
Natural Transfer Of Helminths Of Marine Origin To Freshwater Fishes, With Observations On The Development Of Diphyllobothrium Alascence, Robert L. Rausch, Ann M. Adams
Natural Transfer Of Helminths Of Marine Origin To Freshwater Fishes, With Observations On The Development Of Diphyllobothrium Alascence, Robert L. Rausch, Ann M. Adams
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Infective stages of helminths of 5 species that occur as adults in marine mammals were found in burbot, Lota lota (L.) (Gadidae), from the lower Kuskokwim River (southwestern Alaska): Diphyllobothrium alascense Rausch et Williamson, 1958; Pyramicocephalus phocarum (Fabricius, 1780); Corynosoma strumosum (Rudolphi, 1801); Corynosoma semerme (Forsell, 1904); and Pseudoterranova decipiens (Krabbe, 1878). Some larval stages were obtained also from smelt, Osmerus mordax dentex Steindachner, an anadromous fish important as prey of burbot. Burbot, which are freshwater fish, could become paratenic hosts of those helminths by means of at least three interactions: by consuming marine fishes in brackish waters at river …
A Phylogenetic Hypothesis For Species Of The Genus Taenia (Eucestoda: Taeniidae), Eric P. Hoberg, Arlene Jones, Robert L. Rausch, Keeseon S. Eom, Scott Lyell Gardner
A Phylogenetic Hypothesis For Species Of The Genus Taenia (Eucestoda: Taeniidae), Eric P. Hoberg, Arlene Jones, Robert L. Rausch, Keeseon S. Eom, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Cladistic analysis of a numerical data matrix describing 27 characters for species of Taenia resulted in four most parsimonious phylogenetic trees (174 steps; consistency index = 0.28; homoplasy index = 0.72; retention index = 0.48). Monophyly for Taenia is diagnosed by the metacestode that is either a cysticercus or a form derived from a bladder-like larva; no other unequivocal synapomorphies are evident. Tree structure provides no support for recognition of a diversity of tribes or genera within the Taeniinae: Fimbriotaeniini and Taeniini have no phylogenetic basis. Hydatigera, Fimbriotaenia, Fossor, Monordotaenia, Multiceps, Taeniarhynchus, Tetratirotaenia must …
Helminthoxys Abrocomae N. Sp. (Nematoda: Oxyurida) From Abrocoma Cinerea In Bolivia, Jean-Pierre Hugot, Scott Lyell Gardner
Helminthoxys Abrocomae N. Sp. (Nematoda: Oxyurida) From Abrocoma Cinerea In Bolivia, Jean-Pierre Hugot, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
A new pinworm parasite is described from Abrocoma cinerea, a caviomorph rodent of the superfamily Octodontoidea from the Andes of Bolivia. The new species, Helminthoxys abrocomae n. sp., possesses special secretory mamelons which we consider a synapomorphy of the genus Helminthoxys. Within Helminthoxys, the closest relatives are found in octodontoid rodents: H. gigantea occurs in Octodon degus in Chile and O. bridgesi in Argentina, and H. freitasi is a parasite of Thrichomys aperoides in Brazil. H. abrocomae n. sp. differs from both other species morphometrically in relation to different parts of the body in both sexes, particularly …
Arthropod And Helminth Parasites From The Plains Pocket Gopher, Geomys Bursarius Bursarius From The Hosts' Northern Boundary Range In Minnesota, Monroe H. Bartel, Scott Lyell Gardner
Arthropod And Helminth Parasites From The Plains Pocket Gopher, Geomys Bursarius Bursarius From The Hosts' Northern Boundary Range In Minnesota, Monroe H. Bartel, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
As part of a continuing and more general study of the diversity of parasites from subterranean mammals in central North America, individuals of the Plains pocket gopher, Geomys bursarius bursarius, were collected from 7 localities in northwestern Minnesota from September 1991 through October 1996. Arthropods collected included the fleas, Opisocrostis bruneri (4 of 124, 3.20/0), Foxella ignota ignota (85 of 124, 68.50/0); the chewing louse, Geomydoecus geomydis geomydis from 98 of 124 (790/0), and larvae of the tick, Dermacentor variabilis (1 of 124, 0.8%). Nematodes found included Physaloptera limbata (2 of 118 gophers, 1.7%), Capillaria americana (4 of 118, …
Bibliography Of Parasites And Vertebrate Hosts In Arizona, New Mexico And Texas (1893–1984), Lillian F. Mayberry, Albert G. Canaris, John R. Bristol, Scott Lyell Gardner
Bibliography Of Parasites And Vertebrate Hosts In Arizona, New Mexico And Texas (1893–1984), Lillian F. Mayberry, Albert G. Canaris, John R. Bristol, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
TABLE OF CONTENTS:
Introduction • Tables
Parasite-Host Bibliography: Protozoa • Cestoda • Trematoda • Nemata • Aanthocephala • Arthropoda • Acarina-Mite • Acarina-Tick • Copepoda-Crustacea • Insecta-Diptera • Insecta-Hemiptera • Insecta-Mallophaga and Anoplura • Insecta-Siphonaptera • Pentastomida • Class Unknown
Host-Parasite Bibliography: Scientific Name • Common Name
Literature Cited
Theses and Dissertations not Referenced
Acknowledgments
This bibliographic listing of parasites and hosts reported from Arizona, New Mexico and Texas has been prepared to facilitate literature searches by parasitologists and others needing such information. In the Parasite-Host Bibliography, parasites have been categorized into major taxonomic groups, assigned a number (left column) …
A New Eimeria Sp. From The Plumbeous Central American Caecilian, Dermophis Mexicanus (Amphibia: Gymnophiona) From Volcán, Tajumulco, Department Of San Marcos, Guatemala, Ingrid M. Asmundsson, Jonathan A. Campbell, Donald W. Duszynski
A New Eimeria Sp. From The Plumbeous Central American Caecilian, Dermophis Mexicanus (Amphibia: Gymnophiona) From Volcán, Tajumulco, Department Of San Marcos, Guatemala, Ingrid M. Asmundsson, Jonathan A. Campbell, Donald W. Duszynski
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Fresh fecal samples from 5 caecilians (Dermophis mexicanus) were collected and examined for coccidia in the summer of 1998. The caecilians were collected in the Department of San Marcos, Guatemala. Two of the 5 (40%) specimens of caecilians contained an Eimeria species that is described here as new. This represents the first coccidia described from a gymnophionian host. Sporulated oocysts are spheroidal to subspheroidal, 19.5 × 17.7 (16–23 × 15–21) μm, micropyle and oocyst residuum are absent, and 3 (or more) polar granules are always present. Sporocysts are ovoidal, 11.0 × 7.2 (10–12 × 6–9); a Stieda body …
Elaeophorosis In Red Deer From Spain, Mónica Santín-Durán, J. M. Alunda, J. M. San Miguel, Eric P. Hoberg, C. De La Fuente
Elaeophorosis In Red Deer From Spain, Mónica Santín-Durán, J. M. Alunda, J. M. San Miguel, Eric P. Hoberg, C. De La Fuente
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Elaeophorosis, caused by Elaeophora elaphi, was observed in red deer (Cervus elaphus) from Toledo Province (Spain) for the first time. Adult specimens of Elaeophora elaphi were found in the hepatic vessels of nine of 151 red deer between October 1994 and September 1995; intensity of infection was two to 18 nematodes per host. Adult nematodes were only found during the period from fall through early spring. No differences were present between sex or age groups. Parasites were not found in a limited sample from fallow deer (Dama dama). Blood samples were negative for the presence of …
Coccidia (Apicomplexa: Eimeriidae) Of The Mammalian Order Insectivora, Donald W. Duszynski, Steve J. Upton
Coccidia (Apicomplexa: Eimeriidae) Of The Mammalian Order Insectivora, Donald W. Duszynski, Steve J. Upton
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The coccidia (protistan phylum Apicomplexa Levine, 1970) comprise a large group of obligate intracellular parasites commonly found in all classes of vertebrate hosts and in some invertebrates. This review focuses on those species within the Eimeriidae because they are among the most prevalent and speciose of all parasite groups, and there is no taxonomic summation currently available for those species that infect insectivores. All published species descriptions in the genera Cyclospora, Eimeria and Isospora that infect insectivores are reviewed and evaluated. Some of the named species are invalid, either because rules concerning the naming of new species (International …
Reproductive Biology Of Cobia, Rachycentron Canadum, From Coastal Waters Of The Southern United States, Nancy J. Brown-Peterson, Robin M. Overstreet, Jeffrey M. Lotz, James S. Franks, Karen M. Burns
Reproductive Biology Of Cobia, Rachycentron Canadum, From Coastal Waters Of The Southern United States, Nancy J. Brown-Peterson, Robin M. Overstreet, Jeffrey M. Lotz, James S. Franks, Karen M. Burns
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Reproductive biology of the cobia, Rachycentron canadum, is described from four coastal areas in the southern United States. Samples were obtained from recreational fishermen between December 1995 and November 1997 from the southeastern United States (Morehead City, NC, to Cape Canaveral, FL), the eastern Gulf of Mexico (Ft. Myers to Crystal River, FL), the north-central Gulf of Mexico (Destin, FL, to Chandeleur Islands, LA) and the western Gulf of Mexico (Port Aransas, TX). Histological evidence of spawning occurred from April through September in all areas. Some female cobia (17-32%) throughout the Gulf of Mexico had spent or regressed ovaries …
Phylogeny Of The Ascaridoidea (Nematoda: Ascaridida) Based On Three Genes And Morphology: Hypotheses Of Structural And Sequence Evolution, Steven A. Nadler, Deborah S. S. Hudspeth
Phylogeny Of The Ascaridoidea (Nematoda: Ascaridida) Based On Three Genes And Morphology: Hypotheses Of Structural And Sequence Evolution, Steven A. Nadler, Deborah S. S. Hudspeth
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Ascaridoid nematodes parasitize the gastrointestinal tract of vertebrate definitive hosts and are represented by more than 50 described genera. We used 582 nucleotides (83% of the coding sequence) of the mitochondrial gene cytochrome oxidase subunit 2, in combination with published small- and large-subunit nuclear rDNA sequences (2,557 characters) and morphological data (20 characters), to produce a phylogenetic hypothesis for representatives of this superfamily. This combined evidence phylogeny strongly supported clades that, with 1 exception, were consistent with Fagerholm’s 1991 classification. Parsimony mapping of character states on the combined evidence tree was used to develop hypotheses for the evolution of morphological, …
Phylogenetic Relationships Among Species Of Contracaecum Railliet & Henry, 1912 And Phocascaris Høst, 1932 (Nematoda: Ascaridoidea) Based On Nuclear Rdna Sequence Data, Steven A. Nadler, S. D'Amelio, H. P. Fagerholm, B. Berland, L. Paggi
Phylogenetic Relationships Among Species Of Contracaecum Railliet & Henry, 1912 And Phocascaris Høst, 1932 (Nematoda: Ascaridoidea) Based On Nuclear Rdna Sequence Data, Steven A. Nadler, S. D'Amelio, H. P. Fagerholm, B. Berland, L. Paggi
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Nuclear-encoded large-subunit ribosomal DNA sequences were used to infer a phylogenetic hypothesis for 17 taxa (16 nominal species) of the genera Contracaecum and Phocascaris. Phylogenetic trees based on these data have been used to assess the validity of the taxonomic distinction between these genera, which was based on the presence or absence of certain structural features, rather than on explicit hypotheses of evolutionary history. Phylogenetic hypotheses based on parsimony, likelihood, and neighbor-joining analyses of these sequence data strongly support the hypothesis that species of Phocascaris are nested within the clade of Contracaecum species hosted by phocid seals, and are …
Life Cycle Of Calyptospora Funduli (Apicomplexa: Calyptosporidae), John W. Fournie, Wolfgang K. Vogelbein, Robin M. Overstreet, William E. Hawkins
Life Cycle Of Calyptospora Funduli (Apicomplexa: Calyptosporidae), John W. Fournie, Wolfgang K. Vogelbein, Robin M. Overstreet, William E. Hawkins
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The taxonomic status of the extraintestinal piscine coccidium Calyptospora funduli is based in part on its requirement of an intermediate host (the daggerblade grass shrimp Palaemonetes pugio). In the present study, grass shrimp fed livers of Gulf killifish (Fundulus grandis) infected with sporulated oocysts of C. funduli exhibited numerous sporozoites suspended in the intestinal contents when fresh squash preparations were examined by light microscopy. Using this method, sporozoites were not seen in intestinal epithelial cells of the grass shrimp or in any other cell types. Ultrastructural examination, however, revealed sporozoites in the cytoplasm of the gut basal …
Six New Host Records And An Updated List Of Wild Hosts For Neobenedenia Melleni (Maccallum) (Monogenea: Capsalidae), Stephen A. Bullard, George W. Benz, Robin M. Overstreet, Ernest H. Williams Jr., Jay Hemdal
Six New Host Records And An Updated List Of Wild Hosts For Neobenedenia Melleni (Maccallum) (Monogenea: Capsalidae), Stephen A. Bullard, George W. Benz, Robin M. Overstreet, Ernest H. Williams Jr., Jay Hemdal
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Six new host records and an updated list of wild hosts for Neobenedenia melleni (MacCallum) (Monogenea: Capsalidae) are provided. We report specimens of N. melleni from the skin of a whitefin sharksucker (Echeneis neucratoides Zuieuw [Echeneidae]) caught off Mayagüez, Puerto Rico; from the skin of a mosquitofish (Gambusia xanthosoma Greenfield [Poeciliidae)) caught in Little Salt Creek, Grand Cayman Island, British West Indies; from a freshwater immersion bath of red grouper (Epinephelus morio (Valenciennes) [Serranidae] caught in the Gulf of Mexico off Sarasota, Florida, U.S.A.; from the skin of a garden eel (Heteroconger hassi (Klausewitz and Eibl-Eibesfeldt) …
Syncoelium Vermilionensis Sp. N., (Hemiuroidea: Syncoeliidae) And New Records For Members Of Azygiidae, Ptychogonimidae, And Syncoeliidae Parasitizing Elasmobranchs In The Gulf Of California, Stephen S. Curran, Robin M. Overstreet
Syncoelium Vermilionensis Sp. N., (Hemiuroidea: Syncoeliidae) And New Records For Members Of Azygiidae, Ptychogonimidae, And Syncoeliidae Parasitizing Elasmobranchs In The Gulf Of California, Stephen S. Curran, Robin M. Overstreet
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
During July-September 1993 and May 1996, a survey of the metazoan parasites of 817 elasmobranchs from the Gulf of California, representing 42 species, was conducted at 14 sites along the western portion of the Gulf of California. Elasmobranchs were obtained from local commercial fishers. In this paper, we report all digeneans collected during the survey, excluding the gorgoderids, which will be presented in a subsequent paper. Four species from three hemiuroid families were collected, none of which was known previously from the Gulf of California. Syncoelium vermilionensis sp. n. (Syncoeliidae), a species that differs most notably from its congeners by …
The Systematics Of The Genus Trichinella With A Key To Species, K. D. Murrell, J. Ralph Lichtenfels, Dante S. Zarlenga, E. Pozio
The Systematics Of The Genus Trichinella With A Key To Species, K. D. Murrell, J. Ralph Lichtenfels, Dante S. Zarlenga, E. Pozio
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The authors review the major biological, biochemical, and molecular characters that are used to distinguish the seven Trichinella species (T. spiralis, T. nativa, T. britovi, T. pseudospiralis, T. murrelli, T. nelsoni, T. papuae) and three genotypes whose taxonomic status is yet uncertain (T-6, T-8, T-9). A comparison of host specificity, morphology, reproductive abilities, nurse cell development and freeze resistance is presented, along with useful biochemical and molecular markers. Finally, this information is used to construct a diagnostic key for the species. A phylogenetic classification of the species is needed.
Meningeal Worm In Deer From Western Nebraska, David W. Oates, Mauritz C. Sterner, Ed Boyd
Meningeal Worm In Deer From Western Nebraska, David W. Oates, Mauritz C. Sterner, Ed Boyd
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
One hundred seventy-eight whitetailed deer (Odocoileus virginianus) and 275 mule deer (Odocoileus hemionus) collected from locker plants in the western 2/3 of Nebraska (USA) in November 1997 were examined for the meningeal worm (Parelaphostrongylus tenuis). Parelaphostrongylus tenuis was identified in 17 (10%) of 168 white-tailed deer and in one (<1%) of 273 mule deer. This is the first naturally occurring infection of P. tenuis recorded in a mule deer.
Molecular And Morphometric Evidence For Separate Species Of Uncinaria (Nematoda: Ancylostomatidae) In California Sea Lions And Northern Fur Seals: Hypothesis Testing Supplants Verification, Steven A. Nadler, Byron J. Adams, Eugene T. Lyons, Robert L. Delong, Sharon R. Melin
Molecular And Morphometric Evidence For Separate Species Of Uncinaria (Nematoda: Ancylostomatidae) In California Sea Lions And Northern Fur Seals: Hypothesis Testing Supplants Verification, Steven A. Nadler, Byron J. Adams, Eugene T. Lyons, Robert L. Delong, Sharon R. Melin
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
California sea lions (Zalophus californianus) and northern fur seals (Callorhinus ursinus) are each believed to host distinct hookworm species (Uncinaria spp.). However, a recent morphometric analysis suggested that a single species parasitizes multiple pinniped hosts, and that the observed differences are host-induced. To explore the systematics of these hookworms and test these competing hypotheses, we obtained nucleotide sequences of nuclear ribosomal DNA (D2/D3 28S, D18/D19 28S, and internal transcribed spacer [ITS] regions) from 20 individual hookworms parasitizing California sea lion and northern fur seal pups where their breeding grounds are sympatric. Five individuals from an …
Molecular Systematics Of Mesocestoides Spp. (Cestoda: Mesocestoididae) From Domestic Dogs (Canis Familiaris) And Coyotes (Canis Latrans), Paul R. Crosbie, Steven A. Nadler, Edward G. Platzer, Cynthia Kerner, J. Mariaux, Walter M. Boyce
Molecular Systematics Of Mesocestoides Spp. (Cestoda: Mesocestoididae) From Domestic Dogs (Canis Familiaris) And Coyotes (Canis Latrans), Paul R. Crosbie, Steven A. Nadler, Edward G. Platzer, Cynthia Kerner, J. Mariaux, Walter M. Boyce
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The genus Mesocestoides Vaillant, 1863 includes tapeworms of uncertain phylogenetic affinities and with poorly defined life histories. We previously documented 11 cases of peritoneal cestodiasis in dogs (Canis familiaris L.) in western North America caused by metacestodes of Mesocestoides spp. In the current study, DNA sequences were obtained from metacestodes collected from these dogs (n = 10), as well as proglottids from dogs (n = 3) and coyotes (Canis latrans Say, 1823 [n = 2]), and tetrathyridia representing laboratory isolates of M. corti (n = 3), and these data were analyzed phylogenetically. Two nuclear genetic markers, 18S ribosomal …
Molecular Phylogeny Of Clade Iii Nematodes Reveals Multiple Origins Of Tissue Parasitism, Steven A. Nadler, R. A. Carreno, H. Mejía-Madrid, J. Ullberg, C. Pagan, R. Houston, Jean-Pierre Hugot
Molecular Phylogeny Of Clade Iii Nematodes Reveals Multiple Origins Of Tissue Parasitism, Steven A. Nadler, R. A. Carreno, H. Mejía-Madrid, J. Ullberg, C. Pagan, R. Houston, Jean-Pierre Hugot
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Molecular phylogenetic analyses of 113 taxa representing Ascaridida, Rhigonematida, Spirurida and Oxyurida were used to infer a more comprehensive phylogenetic hypothesis for representatives of ‘clade III’. The posterior probability of multiple alignment sites was used to exclude or weight characters, yielding datasets that were analysed using maximum parsimony, likelihood, and Bayesian inference methods. Phylogenetic results were robust to differences among inference methods for most high-level taxonomic groups, but some clades were sensitive to treatments of characters reflecting differences in alignment ambiguity. Taxa representing Camallanoidea, Oxyurida, Physalopteroidea, Raphidascarididae, and Skrjabillanidae were monophyletic in all 9 analyses whereas Ascaridida, Ascarididae, Anisakidae, Cosmocercoidea, …
A Cox2 Molecular Phylogeny Of The Peronosporomycetes, Deborah S.S. Hudspeth, Steven A. Nadler, Michael E.S. Hudspeth
A Cox2 Molecular Phylogeny Of The Peronosporomycetes, Deborah S.S. Hudspeth, Steven A. Nadler, Michael E.S. Hudspeth
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The evolutionary history of the mitochondrial COX2 locus has been used to infer the phylogenetic relationships among 15 peronosporomycete and a hyphochytriomycete species. This molecular phylogenetic analysis at both the ordinal and generic levels provides strong evidence for the recognition of the Saprolegniomycetidae and the Peronosporomycetidae as natural groups, and for the monophyly of the Saprolegniales, Leptomitales and Pythiales. A three amino acid insertion/deletion event (indel) has been identified as a putative synapomorphy for the Saprolegniales. Parsimony mapping of 12 morphological and biochemical characters on the COX2 molecular phylogeny yields an hypothesis for peronosporomycete ancestral states and shared-derived features.
Relationships Of Nematodirus Species And Nematodirus Battus Isolates (Nematoda: Trichostrongyloidea) Based On Nuclear Ribosomal Dna Sequences, Steven A. Nadler, Eric P. Hoberg, Deborah S.S. Hudspeth, Lora G. Rickard
Relationships Of Nematodirus Species And Nematodirus Battus Isolates (Nematoda: Trichostrongyloidea) Based On Nuclear Ribosomal Dna Sequences, Steven A. Nadler, Eric P. Hoberg, Deborah S.S. Hudspeth, Lora G. Rickard
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Nuclear ribosomal sequence data from the internal transcribed spacers (ITS-1 and ITS-2), 5.8S subunit, and regions of the 18S and 28S genes were used to investigate sequence diversity among geographic samples of Nematodirus battus, and to infer phylogenetic relationships among Nematodirus species. Phylogenetic analysis of these data yielded strong support for relationships among species, depicting Nematodirus helvetianus and Nematodirus spathiger as sister-taxa and a clade of these two species and Nematodirus filicollis. This tree is consistent with caprine bovids as ancestral hosts, with a subsequent host shift to Bovinae in N. helvetianus. Eleven of fourteen N. battus sequences …