Concepts in Animal Parasitology, Chapter 48: Introduction to Endoparasitic Nematodes (Phylum Nemata)

Chapter 48 in Concepts in Animal Parasitology, an introduction to endoparasitic nematodes (phylum Nemata) by Scott L. Gardner. 2024. S. L. Gardner and S. A. Gardner, editors. Zea Books, Lincoln, Nebraska, United States. doi: 10.32873/unl.dc.ciap04

American Society of Parasitologists Newsletter, Volume 39, Number 2, Fall/ Winter, 2017

Fall/Winter 2017 issue of the ASP newsletter

\u3ci\u3eHeligmosomoides thomomyos\u3c/i\u3e sp. n. (Nematoda: Heligmosomidae) from Pocket Gophers, \u3c/i\u3eThomomys\u3c/i\u3e spp. (Rodentia: Geomyidae), in Oregon and California

The nematode Heligmosomoides thomomyos sp. n. is described from the small intestine of Thomomys bulbivorus and T. bottae. This is the first report of Heligmosomoides from rodents of the family Geomyidae. Nematodes of the genus Heligmosomoides Hall, 1916 occur most commonly in arvicolid rodents. Of the 26 known species of the genus, 11 have been recorded from Nearctic rodents (Rausch and Rausch, 1973). In North America, Heligmosomoides spp. have been recorded not only from voles, but also from cricetids and murids. Heligmosomoides spp. characteristically inhabit the small intestine or cecum of their host, where they usually are found tightly coiled around the intestinal or cecal villi (Durette-Desset, 1971). Nematodes representing an undescribed species of Heligmosomoides were found by us in the small intestine of pocket gophers (Geomyidae) of two species, Thomomys bulbivorus (Richardson), from Benton County, Oregon, and T. bottae (Eydoux and Gervais), from Humboldt County, California (collected respectively by S.L.G. and D.P.J.). Rodents of the genus Thomomys have an extensive geographic range in central and western North America. Thomomys bulbivorus is endemic to the Willamette Valley of Oregon, and T. bottae occurs from southwestern Oregon southward to Arizona and northern Mexico (Hall and Kelson, 1959; Ingles, 1965). It is the purpose of the present paper to describe this nematode, which is the first species of Heligmosomoides to be recorded from rodents of the family Geomyidae

Concepts in Animal Parasitology, Chapter 18: \u3ci\u3eTaenia\u3c/i\u3e (Genus)

Chapter 18 in Concepts in Animal Parasitology on the genus Taenia by Sumiya Ganzorig and Scott L. Gardner. 2024. S. L. Gardner and S. A. Gardner, editors. Zea Books, Lincoln, Nebraska, United States. doi: 10.32873/unl.dc.ciap01

A New Species of Molinema (Nematoda: Onchocercidae) in Bolivian Rodents and Emended Description of Litomosoides esslingeri Bain, Petit, and Diagne, 1989

Fil: Notarnicola, Juliana. Centro de Estudios en Parasitología y Vectores (CEPAVE). Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Jiménez, Agustín. Department of Zoology. Southern Illinois University. Carbondale. Illinois; USFil: Gardner, Scott L.. The Harold W. Manter Laboratory of Parasitology. University of Nebraska. Lincoln. Nebraska; U

Host relationships and geographic distribution of species of Blanchard, 1848 (Onchoproteocephalidea, Onchobothriidae) in elasmobranchs: a metadata analysis

Species of Acanthobothrium have been documented as parasites of the spiral intestine of elasmobranchs. Results of a metadata analysis indicate that 114 species of elasmobranchs have been reported as hosts of 200 species of Acanthobothrium. The metadata analysis revealed that 3.7% of species of sharks and 14.9% of species of rays that have been reported as hosts to date; some species are parasitized by more than one species of Acanthobothrium. This work provides a Category designation, as proposed by Ghoshroy and Caira (2001), for each species of Acanthobothrium. These Category designations are a tool to facilitate comparisons among members of Acanthobothrium for descriptions of new species in the future

A Content Based Pattern Analysis System for a Biological Specimen Collection

Over the years many research collections of biological specimen have been developed for research in biological sciences. Number of specimens in some of these collections can be as high as several millions. There is a move to convert these physical specimens into digital images. This research is motivated by the need to develop techniques to mine useful information from these large collections of specimen images. Specific focus of this research is on the collection of parasites in the Harold W. Manter Laboratory (HWML) Parasite Collection, one of the top four parasite collections in the world. These parasites closely resemble in shape and have flexible bodies with rigid extremities. They have only a few specific structural differences. In this paper we present a technique to retrieve specimens based on shape of a given sample. This form of mining based on the shape of the specimen has the potential to discover linkages between specimens not otherwise known

Gregarine Parasites in Zygoptera of Keith County, NE

Prevalence of Gregarine Protozoa Infection in Zygoptera Sourced from Varying Collection Sites in Keith County, Nebraska B.G Kircher II, A. Kadubandi, and S.L. Gardner S. H.W. Manter Laboratory of Parasitology, University of Nebraska-Lincoln and Cedar Point Biological Station, University of Nebraska-Lincoln Damselflies are ubiquitous flying insects of the order Odonata with thousands of species found around the world. The parasites associated with damselfly species are equally as ubiquitous, with the most common being gregarine protozoa and water mites, though other parasitic organisms such as trematodes are also found in these animals. Gaining an understanding of the relationships among hosts and their parasites within an environment can grant greater insight into the overall health and levels of biodiversity present in local environments. In this study, several species of damselfly, largely consisting of the species Hetaerina americana, Enallagma civile, and Nehallenia irene were surveyed from four collecting sites to answer several questions surrounding the relationship among parasites and damselfly species. Samples were accumulated from several sites and their gregarine parasites measured to explore the diversity in the area. Prevalence counts were taken for other parasites affecting damselflies, specifically water mites and trematodes. Additionally, of the four collection localities, two were chosen that featured flowing water, and two sporting stagnant water, to determine if moving water environments differ significantly from non-flowing environments in parasite prevalence or intensity of infection. Ultimately the results of this study fail to reject the hypothesis that larger damselfly hosts tend to have larger gregarine parasites, and that more severe gregarine infections (higher parasite burden) tend to feature gregarines that have larger body sizes. Additionally, the results of this study raise interesting questions requiring further investigation, such as the complete lack of parasites in H. americana from a site that showed high levels of parasitism in other damselfly species

France and SDI

Those critics who argue that the Strategic Defense Initiative (SDI) will divide the Atlantic alliance, frequently cite the French Government\u27s opposition as evidence. The French view of SDI, however, is neither simple nor monolithic