Parasitology Commons^™

A New Species Of Laelapine Mite (Acari: Parasitiformes: Laelapidae) Associated With Proechimys Dimidiatus In The Atlantic Forests Of Brazil, Donald Gettinger, Helena Godoy Bergallo

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Tur megistoproctus, a new species of Laelapinae, is described from the pelage of the echimyid rodent Proechimys dimidiatus from the Atlantic forests of Ilha Grande, south of Rio de Janeiro. Measurements and illustrations are included for females and males. Another laelapine mite species, Tur turki Fonseca, co-occurred with T.megistoproctus in our studies and was recorded from the same host individuals and localities. These 2 laelapine mite species appear to be exclusively associated with a complex of echimyid rodent species (subgenus Trinomys) in the Atlantic forests of southeastern Brazil.

A New Species Of Neotropical Laelapine Mite (Acari: Parasitiformes, Laelapidae) From The Marsupial Monodelphis Americana, Donald Gettinger, Fernanda Martins-Hatano

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Androlaelaps ilhacardosoi, a new species of Laelapinae, is described from the pelage of a 3-lined marsupial, Monodelphis americana, collected on Ilha Cardoso, São Paulo State, Brazil. The description is based on the female, and the systematics of laelapine mites associated with neotropical marsupials is discussed.

Phylogenetic Analysis Of The Metastrongyloidea (Nematoda: Strongylida) Inferred From Ribosomal Rna Gene Sequences, Ramon A. Carreno, Steven A. Nadler

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Phylogenetic relationships among nematodes of the strongylid superfamily Metastrongyloidea were analyzed using partial sequences from the large-subunit ribosomal RNA (LSU rRNA) and small-subunit ribosomal RNA (SSU rRNA) genes. Regions of nuclear ribosomal DNA (rDNA) were amplified by polymerase chain reaction, directly sequenced, aligned, and phylogenies inferred using maximum parsimony. Phylogenetic hypotheses inferred from the SSU rRNA gene supported the monophyly of representative taxa from each of the 7 currently accepted metastrongyloid families. Metastrongyloid taxa formed the sister group to representative trichostrongyloid sequences based on SSU data. Sequences from either the SSU or LSU RNA regions alone provided poor resolution for …

Coccidia In The Mammary Glands Of Shrews (Order: Insectivora), Donald W. Duszynski, William C. Marquardt

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Three of 6 female long-clawed shrews, Sorex unguiculatus Dobson, 1890, collected on the island of Hokkaido, Japan, were found to have unsporulated oocysts and sexual stages (both macro- and microgamonts) in varying stages of development of an unidentified coccidium in both lactating and non lactating mammary glands. Gamonts developed in the alveoli of the mammary glands, and oocysts were found in the lactiferous ducts and in pools of milk. Mature macrogamonts were 11.9 × 15.2 μm (10-14 × 14-20 μm), whereas completely developed microgamonts with many gametes were 14.8 × 16.8 μm (10-18 × 13-20 μm). Oocysts in tissue sections …

Eimeria Species From Cryptotis Shrews (Insectivora: Soricidae) With Description Of A New Species, Donald W. Duszynski, Ralph P. Eckerlin, Timothy J. Mccarthy

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Fresh fecal samples from 12 shrews, 10 Cryptotis goodwini Jackson, 1933, and 2 Cryptotis merriami Thomas, 1898, were collected between December 1994 and May 1998; 11 (92%) were positive for eimeriid coccidia, including 8 of 8 C. goodwini and 2 of 2 C. merriami from Honduras and 1 of 2 C. goodwini from Guatemala. Two Eimeria species were found: 1 is consistent with the description of Eimeria whitakeri Upton and McAllister, 1991, and 1 is described in this study as new. Sporulated oocysts of the new species are subspheroidal, 16.8 × 15.7 (14–20 × 15–19) μm, with a length–width (L/W) …

Eimeria Species From Serows (Capricornis Spp.) In Japan With Descriptions Of Two New Species, Lee Couch, Shigehiko Uni, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Fresh fecal samples from 35 Japanese serows Capricornis crispus (Temminck, 1845), and 5 Formosan serows Capricornis swinhoei Gray, 1862, were collected between October 1998 and March 1999. Eimeriid coccidians were found in 12 (34%) Japanese serows and in 1 (20%) Formosan serow. Three Eimeria species were found, and 2 are described here as new. The third species is consistent with the description of Eimeria kamoshika Inoue, 1989. Sporulated oocysts of 1 new species are broadly ellipsoidal, 20.7 × 16.8 μm (18–23 × 14–19 μm) with a length (L):width (W) ratio of 1.2 (1.1–1.4); these lack a micropyle (M) and oocyst …

Taenia Pencei N. Sp. From The Ringtail, Bassariscus Astutus (Carnivora: Procyonidae), In Texas, U.S.A., Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Taenia pencei n. sp. is described from the ringtail, Bassariscus astutus (Carnivora: Procyonidae), in western Texas, U.S.A., and its metacestode is characterized on the basis of specimens from Peromyscus cf. maniculatus in southern Oregon. Taenia pencei n. sp. apparently occurs exclusively in the ringtail, and it is the first cestode of the genus Taenia known from a member of the family Procyonidae. It is morphologically most similar to species of Taenia from mammals of the family Mustelidae in subclade two of the recently constructed phylogeny of that genus. Taenia pencei is distinguished from the nearctic Taenia taxidiensis in the badger …

Elaphrobates Euzeti Gen. And Sp. N. (Digenea: Sanguinicolidae) From Snappers (Lutjanidae) In The Gulf Of Mexico, Stephen A. Bullard, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Elaphrobates euzeti gen. and sp. n. (Digenea: Sanguinicolidae) infects the heart and branchial vessels of the red snapper (Lutjanus campechanus) and the heart of the gray snapper (Lutjanus griseus) in the Gulf of Mexico. It has ventrolateral tegumental spine rows each consisting of 4-7 spines, an oral sucker with 6-7 concentric spine rows, sinuous posterior ceca extending to the ovary and 2-4 times longer than the anterior ceca, a single mostly intercecal testis not extending beyond the lateral nerve cords, a post-testicular ovary, a dextral ootype at or immediately anterior to level of the female pore, …

Description Of Paranoplocephala Etholeni N. Sp. (Cestoda: Anoplocephalidae) In The Meadow Vole Microtus Pennsylvanicus, With A Synopsis Of Paranoplocehala S. L. In Holarctic Rodents, Voitto Haukisalmi, H. Henttonen, J. Niemimaa, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Paranoplocephala etholeni n. sp, parasitizing the meadow vole Microtus pennsylvanicus in Alaska and Wisconsin, USA. is described Paranaplocephala etholeni is morphologically most closely related to the Nearctic Paranoplocephala ondatrae (Rausch, 1948). Available data suggest that P. etholeni is a host-specific, locally rare species that may have a wide but sporadic geographical distribution in North America. The finding of P. ondatrae-like cestodes in Microtus spp. suggests that this poorly known species may actually be a parasite of voles rather than muskrat (type host). A tabular synopsis of all the known species of Paranoplocephala s. I. in the Holarctic region with …

Calliobothrium Spp. (Eucestoda: Tetraphyllidea: Onchobothriidae) In Mustelus Schmitti (Chondrichthyes: Carcharhiniformes) From Argentina And Uruguay, Verónica A. Ivanov, Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Three species of Calliobothrium inhabit the spiral intestine of Mustelus schmitti in Argentina and Uruguay. Calliobothrium verticillatum australis is redescribed and its taxonomic status modified to species as C. australis. Calliobothrium barbarae n. sp. can be distinguished from all other species of Calliobothrium, which are small bodied, nonlaciniate, and without accessory piece between the bases of axial hook, by worm length, number of segments, cocoon morphology, and hooks shape. Calliobothrium lunae n. sp. is different from other Calliobothrium spp., which are small bodied, nonlaciniate, and have an accessory piece, by the number of segments and testes, hook shape, …

Review Of Parasites And The Behaviour Of Animals By Janice Moore (Oxford University Press, 2002), Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Review of Parasites and the Behaviour of Animals by Janice Moore (Oxford University Press, 2002).

Review Of Parasitism: The Diversity And Ecology Of Animal Parasites By Albert O. Bush, Jacqueline C. Fernández, Gerald W. Esch And J. Richard Seed (Cambridge University, 2002), Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Review of Parasitism: The Diversity and Ecology of Animal Parasites by Albert O. Bush, Jacqueline C. Fernández, Gerald W. Esch and J. Richard Seed (Cambridge University, 2002).

The Birds Of St. Matthew Island, Bering Sea, Kevin Winker, Daniel D. Gibson, Arthur L. Sowls, Brian E. Lawhead, Philip D. Martin, Eric P. Hoberg, Douglas Causey

Harold W. Manter Laboratory of Parasitology: Faculty Publications

St. Matthew Island (608 249 N, 1728 429 W) and its small nearby satellites, Hall Island and Pinnacle Rock, are isolated in the north-central Bering Sea. This infrequently visited location occupies a geographic position with a deep Bering Land Bridge history and is in an area of interdigitation of the Old World, New World, and Beringian avifaunas. It is known for its three Beringian endemics, a bird (McKay’s Bunting, Plectrophenax hyperboreus), a small mammal, and a plant. This level of endemism is striking for a high-latitude island. The only previous summary of the avifauna of St. Matthew Island (Hanna …

Ashworthius Patriciapilittae N. Sp. (Trichostrongyloidea: Haemonchinae), An Abosomal Nematode In Odocoileus Virginianus From Costa Rica, And A New Record For The Species Of The Genus In The Western Hemisphere, Eric P. Hoberg, Arthur Abrams, Ramon A. Carreno, J. Ralph Lichtenfels

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A species of Ashworthius is reported for the first time in the Western Hemisphere, and A. patriciapilittae n. sp. is described on the basis of specimens in white-tailed deer Odocoileus virginianus from Costa Rica. Among 8 known species, A. patriciapilittae is morphologically similar to A. tuyenquangi in red muntjac Muntjacus muntjak from northern Vietnam. The synlophe in A. patriciapilittae is composed of 26 ridges in the cervical zone and is continuous to the caudal extremity in males and females. Males are characterized by a complex dorsal ray and narrow trifurcate spicules (351-356 mm long) lacking an ‘‘eyelet,’’ with dissimilar ventral …

Contributions To The Mammalogy Of Mongolia, With A Checklist Of The Species Of The Country, David S. Tinnin, Jon L. Dunnum, Jorge A. Salazar-Bravo, Nyamsuren Batsaikhan, M. Scott Burt, Scott Lyell Gardner, Terry L. Yates

Harold W. Manter Laboratory of Parasitology: Faculty Publications

We present accounts for 40 species of mammals collected from 15 localities in the Mongolian People's Republic. Accounts include taxonomic, morphometric, reproductive and ecological information, as well as trap effort and success. In addition, we include a brief history of mammalogical work within Mongolia, a taxonomically updated species list for the country, and a list of institutions with holdings of Mongolian mammals.

Redescriptions Of Haemonchus Mitchelli And Haemonchus Okapiae (Nematoda: Trichostrongyloidea) And Description Of A Unique Synlophe For The Haemonchinae, J. Ralph Lichtenfels, Patricia A. Pilitt, Lynda M. Gibbons, Eric P. Hoberg

Harold W. Manter Laboratory of Parasitology: Faculty Publications

In the course of a revision of Haemonchus Cobb, 1898 (Nematoda), commonly referred to as large stomach worms, significant new morphological information was discovered that allows the recognition of two species believed for more than 50 years to be synonymous. Both species, Haemonchus mitchelli Le Roux, 1929, from the eland Taurotragus oryx and other African ruminants and H. okapiae van den Berghe, 1937, from the okapi Okapia johnstoni, have a synlophe of 42 ridges, but the synlophe of H. mitchelli is longer than that of H. okapiae. The distal tip of the left spicule of H. mitchelli bears …

American Society Of Parasitologists Newsletter, V. 24, No. 2, July 2002, Scott Lyell Gardner

American Society of Parasitologists: Newsletter

An issue of the American Society of Parasitologists' quarterly newsletter, also called the Journal of Parasitology Newsletter.

New And Known Species Of Litomosoides (Nematoda: Filarioidea): Important Adult And Larval Characters And Taxonomic Changes, Ricardo Guerrero, Coralie Martin, Scott Lyell Gardner, Odile Bain

Harold W. Manter Laboratory of Parasitology: Faculty Publications

During field surveys in Venezuela, Peru, and French Guiana, species of Litomosoides were recovered from bats and from a didelphid marsupial. Their morphology was studied, giving particular attention to the head and caudal papillae, the spicules (used to distinguish the carinii and sigmodontis groups of Litomosoides), and the microfilariae. Litomosoides wilsoni sp. n. from the short-tailed opossum Monodelphis emiliae is described from Peru; Litomosoides brasiliensis, Litomosoides chandleri, and Litomosoides guiterasi from bats are redescribed, and new hosts are recorded. For the first time, larval stages were recovered from bats (one male and one female fourth-stage larvae of …

Concurrent Infections And The Community Ecology Of Helminth Parasites, John J. Janovy Jr.

John J. Janovy, Jr. Publications

A literature review of the topic of concurrent infections and the community ecology of helminth parasites.

Morphometric Analysis Of Nonadult Characters Of Common Species Of American Gordiids (Nematomorpha: Gordioidea), Ben Hanelt, John J. Janovy Jr.

John J. Janovy, Jr. Publications

The nonadult stages, egg strings, eggs, larvae, and cysts of Gordius robustus, Paragordius varius, and Chordodes morgani are described morphometrically. The goal was to document the differences between species and to evaluate the usefulness of morphometrics in species identification. In concert, multivariate analysis of variance (MANOVA) and univariate analysis of variance (ANOVA, a posteriori contrasts) statistical tests demonstrated that each species is morphometrically distinguishable from all others. Additionally, discriminant function analysis indicated that postseptum length, pseudointestine length, and stylet width were the most important variables in the discrimination of species based on larval characters. Finally, differences in oviposition behaviors …

Bolbophorus Damnificus N. Sp. (Digenea: Bolbophoridae) From The Channel Catfish Ictalurus Punctatus And American White Pelican Pelecanus Erythrorhynchos In The Usa Based On Life-Cycle And Molecular Data, Robin M. Overstreet, Stephen S. Curran, Linda M. Pote, D. Tommy King, Charles K. Blend, Walter D. Grater

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The common pathogenic prodiplostomulum metacercaria in the flesh, mostly near the skin, of pond-produced channel catfish Ictalurus punctatus has been demonstrated to be Bolbophorus damnificus Overstreet & Curran n. sp. The catfish acquires the infection from the snail Planorbella trivolvis, the only known first intermediate host, and the species is perpetuated through the American white pelican Pelecanus erythrorhynchos, as confirmed by experimental infections with nestling and dewormed adult pelican specimens in conjunction with molecular data. It differs from the cryptic species Bolbophorus sp., also found concurrently in the American white pelican, by having eggs 123–129 μm rather …

Phylogenetic Analysis Based On 18s Ribosomal Rna Gene Sequences Supports The Existence Of Class Polyacanthocephala (Acanthocephala), Martin Garcia-Varela, Michael P. Cummings, Gerardo Perez-Ponce De Leon, Scott Lyell Gardner, Juan P. Laclette

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Members of phylum Acanthocephala are parasites of vertebrates and arthropods and are distributed worldwide. The phylum has traditionally been divided into three classes, Archiacanthocephala, Palaeacanthocephala, and Eoacanthocephala; a fourth class, Polyacanthocephala, has been recently proposed. However, erection of this new class, based on morphological characters, has been controversial. We sequenced the near complete 18S rRNA gene of Polyacanthorhynchus caballeroi (Polyacanthocephala) and Rhadinorhynchus sp. (Palaeacanthocephala); these sequences were aligned with another 21 sequences of acanthocephalans representing the three widely recognized classes of the phylum and with 16 sequences from outgroup taxa. Phylogenetic relationships inferred by maximum-likelihood and maximum-parsimony analyses showed Archiacanthocephala …

Taking Evoultionary Transitions Seriously, Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The distinction between reversible and irreversible phenomena in biological information systems provides a basis for distinguishing microevolution from macroevolution. Biological transitions encompass the entire class of irreversible changes in biological systems, including physiological and developmental phenomena. Evolutionary transitions are the subset of biological transitions that have an impact on the quality and quantity of biological information transmitted to future generations. Evolutionary transitions are manifested empirically as macroevolutionary changes, i.e. evolutionary changes that can be detected only through phylogenetic analysis among groups of species sharing a unique common ancestry.

American Society Of Parasitologists Newsletter, V. 24, No. 1, March 2002, Scott Lyell Gardner

American Society of Parasitologists: Newsletter

An issue of the American Society of Parasitologists' quarterly newsletter, also called the Journal of Parasitology Newsletter.

Identical Its-1 And Its-2 Sequences Suggest Spiculopteragia Asymmetrica And Spiculopteragia Quadrispiculata (Nematoda: Trichostrongylidae) Constitute Morphologically Distinct Variants Of A Single Species (Research Notes), Mónica Santín-Durán, Concepción De La Fuente, José M. Alunda, Benjamin M. Rosenthal, Eric P. Hoberg

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Sequences of ITS-1 and ITS-2 rDNA for adult males of Spiculopteragia asymmetrica,/i> and Spiculopteragia quadrispiculata in red deer (Cervus elaphus) were determined. They were found to be identical, suggesting that S. asymmetrica and S. quadrispiculata represent a single species and do not refute the concept of dimorphic species in the Spiculopteragia.

Synopsis Of Freshwater Crayfish Diseases And Commensal Organisms, Brett F. Edgerton, Louis H. Evans, Frances J. Stephens, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Disease agents and pests associated with freshwater crayfish fall into six main categories—viruses, bacteria, rickettsia-like organisms (RLOs), fungi, protists, and metazoans. Data and information on specific disease agents and pests from each of these categories are presented in this synopsis. Each agent or group of agents is considered under the following headings—condition, causative agent(s), life cycle/life history, epizootiology, pathology, pathogen viability. Information for the synopsis was obtained from the published literature and from personal contact with internationally recognized experts in freshwater crayfish aquaculture, biology, and disease. Data of relevance for import risk analysis are summarized.

Import risk analysis is the …

Book Review: Interrelationships Of The Platyhelminthes, Scott Lyell Gardner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A review by Scott L. Gardner of Interrelationships of the Playthelminths by D. T. Littlewood and R. A. Bray (London: Taylor & Francis, 2001; 365 p.; ISBN: 0748409033).

Wallinia Chavarriae N. Sp. (Trematoda: Macroderoididae) In Astyanax Aeneus (Günther, 1860) And Bryconamericus Scleroparius (Regan, 1908) (Osteichthyes: Characidae) From The Área De Conservación Guanacaste, Costa Rica, Anindo Choudhury, Rita Hartvigsen Daverdin, Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Wallinia chavarriae n. sp. is described from the small-bodied characids Astyanax aeneus and Bryconamericus scleroparius in the Área de Conservación Guanacaste, northwestern Costa Rica. The species differs from W. valenciae in possessing an acetabulum that is smaller than the oral sucker and vitelline follicles that are ovoid or rounded rather than elongate and tubular. Detailed comparison between these two species is handicapped by the less than satisfactory condition of the type and only museum specimen of W. valenciae. Wallinia chavarriae and W. valenciae belong to a subfamily of trematodes, Walliniinae, that arguably includes Creptotrematina spp., Magnivitellum simplex, and …

Yungasicola Travassosi Gen. N., Sp. N. (Digenea: Dicrocoeliidae: Eurytrematinae) From Two Species Of Grass Mice Of The Genus Akodon Meyen (Rodentia: Muridae) From The Yungas Of Bolivia, Scott Lyell Gardner, Gerardo Perez-Ponce De Leon

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A new species and genus of digenetic trematode of the family Dicrocoeliidae is described from 2 species of grass mice, Akodon fumeus and Akodon mimus, both collected from an isolated area in the eastern part of the Andes mountains or Yungas of Bolivia. This species differs from all known dicrocoeliids in the unique disposition of the vitelline fields, the much less extensive uterus through the body of the worm (extending posteriad only just past the midline), and cecal branches that are generally conspicuous and lined with a thick layer of glandular epithelial tissue.

Distribution And Prevalence Of Echinococcus Multilocularis In Wild Predators In Nebraska, Kansas, And Wyoming, S. T. Stroandt, D. R. Virchow, M. W. Dryden, Scott E. Hygnstrom, K. R. Kazacos

School of Natural Resources: Faculty Publications

To further determine the distribution and prevalence of Echinococcus multilocularis in the central United States, 245 wild canids (125 red foxes, 120 coyotes) and 33 bobcats were collected from Nebraska, Kansas, and Wyoming and examined for this parasite. Animals examined included 11 red foxes from the western panhandle of Nebraska; 5 red foxes and 30 coyotes from southern Nebraska; 56 red foxes and 1 coyote from northeastern Nebraska; 20 red foxes, 63 coyotes, and 13 bobcats from northern Kansas; 2 red foxes, 26 coyotes, and 20 bobcats from southern Kansas; and 31 red foxes from eastcentral Wyoming. Of these, 27 …