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Immunology and Infectious Disease
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
- Keyword
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- <i>Eucinostomus currani</i> (1)
- <i>Gerres cinereus</i> (1)
- <i>Homalometron lesliorum</i> n. sp. (1)
- <i>Homalometron elongatum</i> (1)
- Apocreadiidae (1)
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- Bighorn sheep (1)
- Climate change (1)
- Coevolution (1)
- Costa Rica (1)
- Ecological fitting (1)
- Fishes (1)
- Gerreidae (1)
- Host shift (1)
- Lungworms (1)
- Muellerius capillaris (1)
- Nicaragua (1)
- Ovis canadensis (1)
- Plant-insect interactions (1)
- Protostrongylus (1)
- Puerto Rico (1)
- Sloppy fitness (1)
- Trematoda (1)
Articles 1 - 13 of 13
Full-Text Articles in Life Sciences
In Memoriam: Mark Dmitrievich Sonin, 1932-2010, K. V. Galaktionov, A. J. Russ, O. Pugachev, A. Pelgunov, A. L. Kontrimavichus, Eric P. Hoberg
In Memoriam: Mark Dmitrievich Sonin, 1932-2010, K. V. Galaktionov, A. J. Russ, O. Pugachev, A. Pelgunov, A. L. Kontrimavichus, Eric P. Hoberg
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
In memoriam for Mark Dmitrievich Sonin, parasitologist at the Russian Academy of Sciences, 1932-2010.
Species Of Coccidia (Apicomplexa: Eimeriidae) Infecting Pikas From Alaska, U.S.A. And Northeastern Siberia, Russia, A. J. Lynch, Donald W. Duszynski, Joseph A. Cook
Species Of Coccidia (Apicomplexa: Eimeriidae) Infecting Pikas From Alaska, U.S.A. And Northeastern Siberia, Russia, A. J. Lynch, Donald W. Duszynski, Joseph A. Cook
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Eighty-eight fecal samples from 2 species of pika, Ochotona collaris and Ochotona hyperborea, collected in Alaska (N = 53) and Russia (N = 35), respectively, were examined for the presence of coccidia (Apicomplexa: Eimeriidae). Five oocyst morphotypes were observed. In O. collaris, we found Eimeria calentinei, Eimeria cryptobarretti, and Eimeria klondikensis, whereas in O. hyperborea, we found Eimeria banffensis, E. calentinei, E. cryptobarretti, E. klondikensis, and Isospora marquardti. This study represents new geographic records for all 5 coccidia and new host records for E. cryptobarretti and I. …
Identity Of Diphyllobothrium Spp. (Cestoda: Diphyllobothriidae) From Sea Lions And People Along The Pacific Coast Of South America, Robert L. Rausch, Ann M. Adams, Leo Margolis
Identity Of Diphyllobothrium Spp. (Cestoda: Diphyllobothriidae) From Sea Lions And People Along The Pacific Coast Of South America, Robert L. Rausch, Ann M. Adams, Leo Margolis
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Host specificity evidently is not expressed by various species of Diphyllobothrium that occur typically in marine mammals, and people become infected occasionally when dietary customs favor ingestion of plerocercoids. This report mainly concerns two species, Diphyllobothrium pacificum and Diphyllobothrium arctocephalinum, for which sea lions (Otariidae) are final hosts. The taxonomic status of those cestodes has not been clearly discernible because of misinterpretation of relationships; complex synonymies have resulted from misidentification(s). Stiles and Hassall in 1899 obtained, but did not describe, cestodes from the northern fur seal (Otariidae; Pribilof Islands). That taxon was subsequently studied by several investigators, with diverse …
Synlophe Structure In Pseudomarshallagia Elongata (Nematoda: Trichostrongyloidea) Abomasal Parasites Among Ethiopian Ungulates, With Consideration Of Other Morphological Attributes And Differentiation Within The Ostertagiinae, Eric P. Hoberg, Bersissa Kumsa, Patricia A. Pillit, Arthur Abrams
Synlophe Structure In Pseudomarshallagia Elongata (Nematoda: Trichostrongyloidea) Abomasal Parasites Among Ethiopian Ungulates, With Consideration Of Other Morphological Attributes And Differentiation Within The Ostertagiinae, Eric P. Hoberg, Bersissa Kumsa, Patricia A. Pillit, Arthur Abrams
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The independence of Pseudomarshallagia and its placement among the medium stomach worms of ungulates, Ostertagiinae, is confirmed based on comparative morphological studies of the synlophe and genital attributes among male and female specimens. An emended description of Pseudomarshallagia elongata is presented based on a series of specimens in sheep from northern Ethiopia. Pseudomarshallagia elongata is retained among the 15 genera of the Ostertagiinae based on presence of a prominent esophageal-intestinal valve, paired "0" papillae, a modified accessory bursal membrane containing the paired "7" papillae, and configuration of the copulatory bursa. The structure of the synlophe in males and females is …
A New Species Of Trichostrongyloid In African Buffalo (Syncerus Caffer) (Artiodactyla: Bovinae) From Uganda, Eric P. Hoberg, Arthur Abrams, Patricia A. Pilitt
A New Species Of Trichostrongyloid In African Buffalo (Syncerus Caffer) (Artiodactyla: Bovinae) From Uganda, Eric P. Hoberg, Arthur Abrams, Patricia A. Pilitt
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Africanastrongylus giganticus n. sp. is described based on large ostertagiine nematodes occurring in the abomasum of African buffalo, Syncerus caffer, from Uganda; this represents the second species recognized in the genus. Specimens of A. giganticus are characterized by large size (15-19 mm in total length), a strongly tapering synlophe in the cervical region, and a great number of ridges at all levels of the body (maximum 72 attained in the third quarter); numbers of ridges exceed that reported among any known genera and species of the Ostertagiinae. We refer A. giganticus to this genus based on a strongly tapering …
Examination Of Homalometron Elongatum Manter, 1947 And Description Of A New Congener From Eucinostomus Currani Zahuranec, 1980 In The Pacific Ocean Off Costa Rica, Jessica H. Parker, Stephen S. Curran, Robin M. Overstreet, Vasyl V. Tkach
Examination Of Homalometron Elongatum Manter, 1947 And Description Of A New Congener From Eucinostomus Currani Zahuranec, 1980 In The Pacific Ocean Off Costa Rica, Jessica H. Parker, Stephen S. Curran, Robin M. Overstreet, Vasyl V. Tkach
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Homalometron elongatum is reexamined using heat-killed material that was not subjected to pressure during fixation from Gerres cinereus collected from San Juan Harbor, Puerto Rico, U.S.A. The new material is compared with some paratype specimens and differs by having a much less variable forebody length, and a median rather than submedian genital pore. Tegumental spines reportedly cover the anterior end of the body but we observed tegumental spines covering the entire body surface in both the paratype and new material. Homalometron lesliorum n. sp. is described from Eucinostomus currani from the Pacific coasts of Costa Rica and Nicaragua. The new …
How Specialists Can Be Generalists: Resolving The "Parasite Paradox" And Implications For Emerging Infectious Disease, Salvatore J. Agosta, Niklas Janz, Daniel R. Brooks
How Specialists Can Be Generalists: Resolving The "Parasite Paradox" And Implications For Emerging Infectious Disease, Salvatore J. Agosta, Niklas Janz, Daniel R. Brooks
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The parasite paradox arises from the dual observations that parasites (broadly construed, including phytophagous insects) are resource specialists with restricted host ranges, and yet shifts onto relatively unrelated hosts are common in the phylogenetic diversification of parasite lineages and directly observable in ecological time. We synthesize the emerging solution to this paradox: phenotypic flexibility and phylogenetic conservatism in traits related to resource use, grouped under the term ecological fitting, provide substantial opportunities for rapid host switching in changing environments, in the absence of the evolution of novel host-utilization capabilities. We discuss mechanisms behind ecological fitting, its implications for defining specialists …
Muellerius Capillaris Dominates The Lungworm Community Of Bighorn Sheep At The National Bison Range, Montana, Vanessa O. Ezenwa, Alicia M. Hines, Elizabeth A. Archie, Eric P. Hoberg, Ingrid M. Asmundsson, John T. Hogg
Muellerius Capillaris Dominates The Lungworm Community Of Bighorn Sheep At The National Bison Range, Montana, Vanessa O. Ezenwa, Alicia M. Hines, Elizabeth A. Archie, Eric P. Hoberg, Ingrid M. Asmundsson, John T. Hogg
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Lungworm infections are common among bighorn sheep (Ovis canadensis) in North America, and the predominant species reported are Protostrongylus stilesi and P. rushi. The only records of another lungworm species, Muellerius capillaris, infecting bighorns come from South Dakota, USA. At the National Bison Range (NBR), Montana, USA we found that across six sampling periods, 100% of wild bighorn sheep surveyed were passing first-stage dorsal-spined larvae (DSL) which appeared to be consistent with M. capillaris. By contrast, only 39%or fewer sheep were passing Protostrongylus larvae. Using molecular techniques, we positively identified the DSL from the NBR …
First Report Of Viral Pathogens Wssv And Ihhnv In Argentine Crustaceans [Note], Sergio Roberto Martorelli, Robin M. Overstreet, Jean A. Jovanovich Alvillar
First Report Of Viral Pathogens Wssv And Ihhnv In Argentine Crustaceans [Note], Sergio Roberto Martorelli, Robin M. Overstreet, Jean A. Jovanovich Alvillar
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The pathogenic penaeid shrimp viruses white spot syndrome virus (WSSV) and infectious hypodermal and hematopoietic necrosis virus (IHHNV) are reported for the first time from Argentina. They both occurred in wild crustaceans in Bahia Blanca Estuary, with WSSV detected by polymerase chain reaction (pCR) or real time quantitative pCR (qpCR) methods as infecting samples as high as 56% of the penaeid Artemesia longinaris Bate, 1888, 67% of the grapsoid Cyrtograpsus angulatus dana, 1851, and 40% of the introduced palaemonid Palaemon macrodactylus Rathbun, 1902. The highest detected copy number was 39,600 copies/μg dNA. IHHNV was tested for using pCR in …
Discovery Of New Ohbayashinema Spp. (Nematoda: Heligmosomoidea) In Ochotona Princeps And Ochotona Cansus (Lagomorpha: Ochotonidae) From Western North America And Central Asia, With Considerations Of Historical Biogeography, M.-C. Durrette-Desset, Kurt E. Galbreath, Eric P. Hoberg
Discovery Of New Ohbayashinema Spp. (Nematoda: Heligmosomoidea) In Ochotona Princeps And Ochotona Cansus (Lagomorpha: Ochotonidae) From Western North America And Central Asia, With Considerations Of Historical Biogeography, M.-C. Durrette-Desset, Kurt E. Galbreath, Eric P. Hoberg
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Three new species of Ohbayashinema (Nematoda, Heligmosomoidea) are described from localities in western North America and central Asia. Two of these species, Ohbayashinema nearctica n. sp. and Ohbayashinema aspeira n. sp., are parasitic in American pika, Ochotona princeps. Ohbayashinema nearctica is differentiated from the 5 known species of the genus parasitic in Ochotonidae from the Old World by very long spicules and an oblique axis of orientation for the ridges composing the synlophe. Ohbayashinema aspeira, described only from females, is similar to Oh. nearctica based on the number of cuticular ridges at the midbody. It is mainly differentiated …
Critical Comment: What We Don’T Recognize Can Hurt Us: A Plea For Awareness About Cryptic Species, Gerardo Pérez-Ponce De León, Steven A. Nadler
Critical Comment: What We Don’T Recognize Can Hurt Us: A Plea For Awareness About Cryptic Species, Gerardo Pérez-Ponce De León, Steven A. Nadler
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
We conducted an extensive literature review on studies that have used DNA sequences to detect cryptic species of parasites during the last decade. Each literature citation that included the term ‘‘cryptic’’ or ‘‘sibling’’ species was analyzed to determine the approach used by the author(s). Reports were carefully filtered to retain only those that recognized the existence of cryptic species centered on the use of DNA sequences. Based on analysis of these papers, we comment on the different ways that parasite cryptic species are discovered in studies focusing on different aspects of the host–parasite relationship, or disciplines, within parasitology. We found …
Structural Restoration Of Nematodes And Acanthocephalans Fixed In High Percentage Alcohol Using Dess Solution And Rehydration, Soraya Naem, Christopher Pagan, Steven A. Nadler
Structural Restoration Of Nematodes And Acanthocephalans Fixed In High Percentage Alcohol Using Dess Solution And Rehydration, Soraya Naem, Christopher Pagan, Steven A. Nadler
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Ninety-five percent ethanol is the most widely used field and laboratory preservative for nematodes and other helminth specimens intended for use in molecular systematics. Preservation of nematodes in high-concentration alcohols results in structural dehydration artifacts, including shrinkage and body surface distortions sufficient to obscure features required for morphological identification and analysis, thereby compromising precise morphometrics. However, treating dehydrated nematodes using a solution of DMSO, disodium EDTA, and NaCl, followed by rehydration in water produces marked improvements in specimen shape and surface features, resulting from diffusion of water into the tissues and pseudocoelom as the internal salt concentration is reduced. Following …
Soil-Transmitted Helminthiases: Implications Of Climate Change And Human Behavior, Haylee J. Weaver, John M. Hawdon, Eric P. Hoberg
Soil-Transmitted Helminthiases: Implications Of Climate Change And Human Behavior, Haylee J. Weaver, John M. Hawdon, Eric P. Hoberg
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Soil-transmitted helminthiases (STHs) collectively cause the highest global burden of parasitic disease after malaria and are most prevalent in the poorest communities, especially in sub-Saharan Africa. Climate change is predicted to alter the physical environment through cumulative impacts of warming and extreme fluctuations in temperature and precipitation, with cascading effects on human health and wellbeing, food security and socioeconomic infrastructure. Understanding how the spectrum of climate change effects will influence STHs is therefore of critical importance to the control of the global burden of human parasitic disease. Realistic progress in the global control of STH in a changing climate requires …