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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
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
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.
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
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
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
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
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.
Revised List Of Type Specimens On Deposit In The University Of California Davis Nematode Collection, S. Patricia Stock, Steven A. Nadler
Revised List Of Type Specimens On Deposit In The University Of California Davis Nematode Collection, S. Patricia Stock, Steven A. Nadler
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The list of deposited type specimens is updated for the University of California Davis Nematode Collection, as recommended by the International Code of Zoological Nomenclature. The type collection includes 1,001 species and more than 11,000 individual specimens mounted on microscope slides. This list can be used as a reference to locate specimens but is not meant to clarify ambiguities that may exist concerning the type status of particular specimens.
Metazoan Parasites And Other Symbionts Of Cetaceans In The Caribbean, Antonio A. Mignucci-Giannoni, Eric P. Hoberg, Doug Siegel-Causey, Ernest H. Williams Jr.
Metazoan Parasites And Other Symbionts Of Cetaceans In The Caribbean, Antonio A. Mignucci-Giannoni, Eric P. Hoberg, Doug Siegel-Causey, Ernest H. Williams Jr.
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The parasite fauna in cetaceans from Puerto Rico, the Virgin Islands, and the larger Caribbean region is poorly known. We provide the first records for parasite biodiversity among a diverse assemblage of cetaceans from the Caribbean Sea. Internal and external parasites and commensals were collected from stranded whales and dolphins salvaged in Puerto Rico, the United States and British Virgin Islands, Jamaica, and Venezuela between 1989 and 1997. A total of 47 individuals of 16 species of whales and dolphins (15 odontocetes and one mysticete) were examined. Overall, parasites and commensals were found in 34 (72.3%) animals, representing 13 species …
The Identification And Characteristics Of Echinoparyphium Rubrum (Cort, 1914) Comb. New (Trematoda, Echinostomatidae) Based On Experimental Evidence Of The Life Cycle, Ivan Kanev, Robert Sorensen, Mauritz Strerner, Rebecca Cole, Bernard Fried
The Identification And Characteristics Of Echinoparyphium Rubrum (Cort, 1914) Comb. New (Trematoda, Echinostomatidae) Based On Experimental Evidence Of The Life Cycle, Ivan Kanev, Robert Sorensen, Mauritz Strerner, Rebecca Cole, Bernard Fried
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The life cycle of Echinoparyphium rubrum (Cort, 1914) comb. n. has been completed experimentally. All of the developmental stages - egg, miracidium, sporocyst, mother and daughter rediae, cercaria, metacercaria, and adult - were examined and described. The miracidia infected freshwater snails of the genus Physa, P. gyrina and P. occidentalis. Attempts to infect snails of the genera Lymnaea, L. auricularis, L. peregra. L. truncatula and Bulinus, B. truncatus failed. Cercariae infected various pulmonate and prosobranch freshwater snails, mussels, frogs, water turtles and planarians. The adults developed in the small intestine of birds and mammals. The identity and major characteristics of …
Comparisons Of Two Polymorphic Species Of Ostertagia And Phylogenetic Relationships Within The Ostertagiinae (Nematoda: Trichostrongyloidea) Inferred From Ribosomal Dna Repeat And Mitochondrial Dna Sequences, Dante S. Zarlenga, Eric P. Hoberg, Frank Stringfellow, J. Ralph Lichtenfels
Comparisons Of Two Polymorphic Species Of Ostertagia And Phylogenetic Relationships Within The Ostertagiinae (Nematoda: Trichostrongyloidea) Inferred From Ribosomal Dna Repeat And Mitochondrial Dna Sequences, Dante S. Zarlenga, Eric P. Hoberg, Frank Stringfellow, J. Ralph Lichtenfels
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The first internal transcribed spacer DNA (ITS-1) (rDNA) and the mitochondrial (mt) DNA-derived cytochrome oxidase I gene (COX-1) were enzymatically amplified, cloned and sequenced from 6 nominal species of Ostertagiinae as well as Haemonchus contortus and Haemonchus placei. The portion of the COX-1 gene analyzed was 393 base pairs (bp) in length and contained 33 within species polymorphic base changes at 28 synonymous sites. The ITS-1 rDNA consensus sequences ranged from 392 bp (Ostertagia ostertagi/Ostertagia lyrata, Teladorsagia circumcincta) to 404 bp (H. contortus, H. placei). These data were used both in …
Evolution Of The Schistosomes (Digenea: Schistosomatoidea): The Origin Of Dioecy And Colonization Of The Venous System, Thomas R. Platt, Daniel R. Brooks
Evolution Of The Schistosomes (Digenea: Schistosomatoidea): The Origin Of Dioecy And Colonization Of The Venous System, Thomas R. Platt, Daniel R. Brooks
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Trematodes of the family Schistosomatidae are considered venous system specialists whose sister group is the vascular system generalists (Spirorchidae) of turtles. Colonization of homeotherms by vascular trematodes required precision egg laying near the conduit for egg passage to the external environment and avoidance of pathogenesis that might result in the premature death of the host. Evolution of dioecy from the hermaphroditic condition may have proceeded through androdioecy in which hermaphrodites were specialized for precision egg placement in the vascular system and larger adults became functional males. The evolution of nuclear genes suppressing female function along with cytoplasmic genes suppressing male …
Limited Range Of Genetic Variation In Echinococcus Multilocularis, Heinz Rinder, Robert L. Rausch, Kenichi Takahashi, Hartmuth Kopp, Angelika Thomschke, Thomas Löscher
Limited Range Of Genetic Variation In Echinococcus Multilocularis, Heinz Rinder, Robert L. Rausch, Kenichi Takahashi, Hartmuth Kopp, Angelika Thomschke, Thomas Löscher
Harold W. Manter Laboratory of Parasitology: Faculty Publications
DNA sequencing of 1.3 kb of rDNA containing both internal transcribed spacers (ITS1, ITS2) and adjoining rRNA coding regions in each of 11 Echinococcus multilocularis isolates from Germany, Japan, and Alaska resulted in identical nucleotide sequences except for a single polymorphic locus 54 bp upstream of the 3' end of the 18S coding region, separating Eurasian isolates from an Alaskan isolate. The same base substitution was found in each of two additional isolates from Alaska. The distribution of the resulting genotypes with regard to their origin is highly significant (>99.9%) and corresponds to the traditional subspecies Echinococcus multilocularis multilocularis …
A Revision Of The Calicotylinae Monticelli, 1903 (Monogenea: Monocotylidae), Leslie A. Chisholm, Tom J. Hansknecht, Ian D. Whittington, Robin M. Overstreet
A Revision Of The Calicotylinae Monticelli, 1903 (Monogenea: Monocotylidae), Leslie A. Chisholm, Tom J. Hansknecht, Ian D. Whittington, Robin M. Overstreet
Harold W. Manter Laboratory of Parasitology: Faculty Publications
A total of 153 elasmobranchs (46 species), either freshly collected from the Gulf of Mexico, USA, and Tasmania, Australia, or museum specimens collected from various localities worldwide, were examined for calicotyline (Monocotylidae) monogeneans. Thirty-five elasmobranchs, representing 17 species, were infected with Calicotyle spp. which we identified as the following previously described species: C. asterii (Szidat, 1970) Timofeeva, 1985; C. kroyeri Diesing, 1850; C. macrocotyle Cordero, 1944; C. similis (Szidat, 1972) Timofeeva, 1985; C. splendens (Szidat, 1970) Timofeeva, 1985; C. stossichi Braun, 1899; and C. urolophi Chisholm, Beverley-Burton & Last, 1991. The Calicotylinae, which comprises the genera Calicotyle and Dictyocotyle, …
Two New Species Of Litomosoides (Nemata: Onchocercidae) From Ctenomys Opimus (Rodentia: Ctenomyidae) On The Altiplano Of Bolivia, Sara V. Brant, Scott Lyell Gardner
Two New Species Of Litomosoides (Nemata: Onchocercidae) From Ctenomys Opimus (Rodentia: Ctenomyidae) On The Altiplano Of Bolivia, Sara V. Brant, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Two filarioid nematodes, Litomosoides andersoni n. sp. and Litomosoides ctenomyos n. sp. (Nemata: Onchocercidae), are described from the mesenteries of the subterranean rodent Ctenomys opimus (Rodentia: Hystrichognathi) collected on the altiplano of Bolivia. Specimens collected near Rancho Huancaroma (Oruro Dept.) in 1984 and 1986 can be recognized as undescribed by the structures of the spicules and stoma and the shape of the ovijector. This record represents the first time members of the genus Litomosoides have been recovered from rodents of the family Ctenomyidae; this also represents the first published report of these nematodes from mammals in Bolivia.
Eimeria From Bats Of The World: Two New Species From Myotis Spp. (Chiroptera: Vespertilionidae), Damien T. Scott, Donald W. Duszynski
Eimeria From Bats Of The World: Two New Species From Myotis Spp. (Chiroptera: Vespertilionidae), Damien T. Scott, Donald W. Duszynski
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Between 1986 and 1995, 548 fecal samples were collected from 41 species of bats (Molossidae, Mormoopidae, Phyllostomidae, Thyropteridae, and Vespertilionidae) from New Mexico, California, Baja California Sur (Mexico), and Bolivia. Of these, the feces of 28 (5%) bats, including Antrozous pallidus, Myotis ciliolabrum, Myotis lucifugus, and Myotis yumanensis (Vespertilionidae), contained oocysts representing at least 3 species of Eimeria. A new species of eimerian from M. lucifugus (3/27, 11%) and M. yumanensis (8/70, 11%) is described. Sporulated oocysts are ellipsoidal, 22.3 × 14.8 (18-25 × 13-16) μm with micropyle (~2 μm) and polar granules (1-4), but an …
Eimeria (Protozoa: Eimeriidae) From North American Sciurids, Glaucomys Sabrinus And Tamias Townsendii: With A Description Of A New Species, Claire A. Fuller, Donald W. Duszynski
Eimeria (Protozoa: Eimeriidae) From North American Sciurids, Glaucomys Sabrinus And Tamias Townsendii: With A Description Of A New Species, Claire A. Fuller, Donald W. Duszynski
Harold W. Manter Laboratory of Parasitology: Faculty Publications
From 1990 to 1991, 11 northern flying squirrels, Glaucomys sabrinus, and 30 Townsend's chipmunks, Tamias townsendii, were live-trapped, marked, and released in MacDonald Forest, Benton Co., Oregon and their feces at each capture examined for the presence of coccidian parasites. Two eimerians were found in G. sabrinus: Eimeria doreyi and a second species we describe here as new. One species, Eimeria vilasi, was identified from T. townsendii. Sporulated oocysts of the new eimerian are strongly ellipsoidal, pointed at 1 end, and are 47.2 × 25.0 (41-52 × 22-31) μm with ovoidal sporocysts, 19.0 × 10.5 …
Six Species Of Acanthobothrium (Eucestoda: Tetraphyllidea) In Stingrays (Chondrichthyes: Rajiformes: Myliobatoidei) From Ecuador, Fernando Marques, Daniel R. Brooks, Ramiro Barriga
Six Species Of Acanthobothrium (Eucestoda: Tetraphyllidea) In Stingrays (Chondrichthyes: Rajiformes: Myliobatoidei) From Ecuador, Fernando Marques, Daniel R. Brooks, Ramiro Barriga
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Six species of Acanthobothrium, 4 described as new, are reported in stingrays from southern Ecuador. Acanthobothrium atahualpai n. sp. in Gymnura afuerae most closely resembles Acanthobothrium fogeli and Acanthobothrium parviuncinatum,/i> by having bothridial hooks with recurved prongs and short handles. It differs from A. fogeli by having bothridial hooks 163-195 μm vs. 78-114 μm long and averaging 25 vs. 32 testes per proglottis; it differs from A. parviuncinatum by having bothridial hooks 163-195 μm vs. 87 μm long and averaging 25 vs. 13 testes per proglottis. Acanthobothrium minusculus n. sp. in Urolophus tumbesensis most resembles Acanthobothrium campbelli and Acanthobothrium …
Inmemoriam: Raymond Millard Cable, 1909-1995, Robin M. Overstreet
Inmemoriam: Raymond Millard Cable, 1909-1995, Robin M. Overstreet
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Obituary of Raymond Millard Cable, American parasitologist, 1909-1995.
A Guideline For The Preparation Of Species Descriptions In The Eimeriidae, Donald Duszynski, Patricia G. Wilber
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
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
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
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
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
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.
Parasite Biodiversity And Emerging Pathogens: A Role For Systematics In Limiting Impacts On Genetic Resources, Eric P. Hoberg
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
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
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
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
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
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 …