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A Statistical Approach To The Objective Differenciation Of Hirschmanniella Oryzae From H. Belli (Nemata : Pratylenchidae), Renaud Fortuner, Armand R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Alternate English title: A Statistical Approach to the Objective Differentiation of Hirschmanniella oryzae from H. belli (Nemata : Pratylenchidae)

English language abstract: California populations attributed to Hirschmanniella belli were compared i) to paratypes of this species, ii) to topotypes of H. oryzae, and iii) to other populations of the same genus from other parts of the world. Comparisons were made using discriminant function analyses. Some small differences between California populations and paratypes of H. belli were attributed to artifacts caused by the long storage of these paratypes. Several characters were selected that were not affected by these artifacts, but …

Long-Term Adult Population Fluctuations And Distribution Of The Spot, Leiostomus Xanthurus, In Mississippi, Brian D. Leblanc, Deborah L. Murphy, Robin M. Overstreet, Michael J. Maceina

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Adult specimens of the spot. Leiostomus xanthurus, were collected from bayou, Mississippi Sound, and barrier island locations along the Gulf Coast of Mississippi from November 1982 to July 1989. 7he mean total length of all spot sampled in comparable gill net sets was 219 mm (± 14 standard deviation, n=4,338). Ninety-five percent of the spot were collected in the island and sound areas, where the salinity was higher than in the bayous. Catch per unit effort was high at island and sound stations in spring and autumn, with relatively few fish caught during the winter spawning season and …

Polymorphism Of Eimerian Oocysts Can Be A Problem In Naturally Infected Hosts: An Example From Subterranean Rodents In Bolivia, Scott Lyell Gardner, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Since 1986, 364 tuco-tucos (Ctenomys spp.) representing 7 species were collected from 16 major collecting areas representing at least 4 distinct ecological habitats in Bolivia, South America. All were examined for coccidia, and 125 (34%) had oocysts in their feces including 84 of 236 (36%) Ctenomys boliviensis from tropical palm/savanna habitats; 1 of 3 (33%) C. conoveri from a chaco thorn forest; 3 of 7 (33%) C. frater from medium altitude grass habitats; and 6 of 8 (75%) C. lewisi and 31 of 35 (88%) C. opimus from high altitude/puna habitats. None of 3 C. …

Cytokeratin And Desmoplakin Analogues Within An Intracellular Parasite, Earl Weidner, Robin M. Overstreet, Bruce Tedeschi, John Fuseler

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A significant amount of the total protein in the spore sacs of the microsporidian Thelohania sp. consisted of the cytoskeletal elements, cytokeratin intermediate filaments, and the desmosomal analogues. The cytokeratin and desmosomal analogues were organized as cage envelopes surrounding the spores within the spore sac stage. Thelohania sp. parasitizes the skeletal muscle of Callinectes sapidus, a crustacean that does not appear to have cytokeratins or desmosomes. Immunoprobe data indicate Thelohania sp. has a 240 kDa desmoplakin protein and 48, 51, 54 and 56 kDa cytokeratin polypeptides responsive to antibodies developed against bovine cytoskeletal counterparts. The cytoskeletal envelopes within the …

Introduction Of Robert B. Grieve As The Henry Baldwin Ward Medalist For 1990

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Transcript of the introduction of Robert B. Grieve as the American Society of Parasitologists Henry Baldwin Ward Medalist for 1990, given by Daniel R. Brooks.

New Species Of Andrya And Paranoplocephala (Cestoidea: Anoplocephalidae) From Voles And Mole-Rats In Israel And Syria, Jeanne M. Fair, Gerald D. Schmidt, Guta Wertheim

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Andrya rauschi n. sp. from Microtus guentheri differs from all other species in testes number (22-40) and distribution. Andryar auschi is superficially similar to Paranoplocephala omphalodes but differs in the development of the uterus. Paranoplocephala nevoi n. sp. from Spalax ehrenbergi, is most similar to Paranoplocephala gundii,/i> and Paranoplocephalaja nickii but differs in the number of testes (26-44). Paranoplocephala nevoi differs from the remaining species in the distribution of testes and in having unilateral genital pores.

Cladistic analysis of the generic-level relationships within the family Tetrabothriidae was conducted. A single cladogram resulted from evaluation of 28 homologous transformation series representing 41 character states. The genus Tetrabothrius was recognized as plesiomorphic followed by Chaetophallus and Trigonocotyle. The latter was considered as the sister group for the remaining tetrabothriid genera of marine mammals. Anophryocephalus, Strobilocephalus, and Priapocephalus are among the most highly derived genera and are postulated as having close evolutionary affinities. Comparisons to previous explicit hypotheses for relationships among the genera indicated the present analysis was the most efficient phylogenetic statement (consistency index = …

Coccidian Parasites (Apicomplexa: Eimeriidae) From Two Species Of Caimans, Caiman Yacare Daudin And Caiman Latirostris Daudin (Alligatoridae), From Paraguay, Aida Luz Aquino-Shuster, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

From October 1986 to January 1987, feces from 119 Caiman yacare and 12 Caiman latirostris were collected in Paraguay and later examined for coccidian oocysts; 69 of 119 (58%) samples from C. yacare and 3 of 12 (25%) samples from C. latirostris contained coccidian oocysts. Two eimerians infected C. yacare and both are described as new species. Sporulated oocysts of Eimeria paraguayensis n. sp., are ellipsoid, 34.0 x 23.6 (26-38 x 20-29) μm with sporocysts ovoid, 14.0 x 7.1 (10-19 x 6-10) μm. Sporulated oocysts of Eimeria caimani n. sp, are spheroid, 22.4 (19-29) μm with sporocysts ovoidal, 12.9 x …

Helminth Parasites Of Northern Spotted Owls (Strix Occidentalis Caurina) From Oregon, Eric P. Hoberg, G. S. Miller, E. Wallner-Pendleton, O. R. Hedstrom

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Helminth parasites are reported for the first time from northern spotted owls. Seventyone percent of a sample of Strix occidentalis caurina from western Oregon was infected. Nematodes (Porrocaecum depressum, Capillaria falconis, Microtetrameres sp. and Synhimantus hamatus) were the most prevalent parasites although cestodes (Paruterina rauschi) and acanthocephalans (Centrorhynchus conspectus) were also represented. There was an association between components of this helminth fauna and the diet of spotted owls which is dominated by small rodents. The occurrence of P. rauschi rather than P. candelabraria in this geographic region and host-species may provide additional …

An Alternative Approach For Evaluating The Efficacy Of Potential Biocontrol Agents Of Weeds. 1. Inverse Linear Mode, Dan J. Pantone, William A. Williams, Armand R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Methods for evaluating the efflicacy of potential classical biocontrol agents were outlined for a model biocontrol agent-weed-crop system. A proposed biocontrol agent (the fiddleneck flower gall nematode), its weed host (coast fiddleneck), and wheat were used as representative organisms. An additive experimental design (inverse linear model) was used. Regression of the reciprocal of the average plant biomass of each species onto the density of itself and the other plant species yielded competitive indices that measure the competitive ability of the plants. The results of 2 yr of field experiments revealed a dramatic change in the competitive interaction between fiddleneck and …

An Alternative Approach For Evaluating The Efficacy Of Potential Biocontrol Agents Of Weeds. 2. Path Analysis, Dan J. Pantone, William A. Williams, Armand R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Path analysis was used to assess the efficacy of the fiddleneck flower gall nematode as a weed biocontrol agent of coast fiddleneck in competition with wheat during 2 yr of field experiments. The path analysis revealed that the number of inflorescences/plant for fiddleneck and the number of heads/plant for wheat were the most important yield components that determine fecundity and seed yield. The density of fiddleneck had a much greater impact on the yield components of fiddleneck than did the density of wheat or the nematode rate of inoculation. The nematode had its greatest negative impact on the number of …

Vector Capability Of Xiphinema Americanum Sensu Lato In California, John A. Griesbach, Armand R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Seven field populations of Xiphineraa americanum sensu lato from California's major agronomic areas were tested for their ability to transmit two nepoviruses, including the prune brownline, peach yellow bud, and grapevine yellow vein strains of tomato ringspot virus and the bud blight strain of tobacco ringspot virus. Two field populations transmitted all isolates, one population transmitted all tomato ringspot virus isolates but failed to transmit bud blight strain of tobacco ringspot virus, and the remaining four populations failed to transmit any virus. Only one population, which transmitted all isolates, had been associated with field spread of a nepovirus. As two …

Tribune: Genus And Family: Concepts And Natural Groupings, Armand R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A little over two hundred and fifty years ago Linnaeus (= Linne) began to maneuver his concepts of animal arrangement into Aristotle’s logic of classes. Twenty-three years elapsed between the publication of his first and tenth editions of Systema naturae. The tenth edition (1758) is the acknowledged starting point of zoological nomenclature. Often forgotten but highly significant is the fact that he spent those intervening twenty years orchestrating the then known animals into the world of philosophy.

Coccidian Parasites (Apicomplexa: Eimeriidae) From Insectivores. Viii. Four New Species From The Star-Nosed Mole, Condylura Cristata, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Twenty-four star-nosed moles, Condylura cristata, collected from the northeastern United States (Maine, Massachusetts, Ohio, Vermont) were examined for coccidian oocysts. All of the moles were infected with from 1 to 4 species of coccidia representing 2 eimerian and 3 isosporan spp., but oocysts of only 4 of these species were present in sufficient numbers for detailed study; these are described as new. Sporulated oocysts of ,i>Eimeria condylurae n. sp. were subspheroid, 17.7 x 15.7 (17-23 x 14-21) μm, with sporocysts ellipsoid, 11.7 x 5.6 (11-14 x 5-6) μm; E. condylurae was found in 3 of 24 (12.5%) moles. …

Coccidia (Apicomplexa: Eimeriidae) From The Subterranean Rodent Ctenomys Opimus Wagner (Ctenomyidae) From Bolivia, South America, Christine R. Lambert, Scott Lyell Gardner, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Of 35 tuco-tucos (Ctenomys opimus) collected in Bolivia, South America, 31 (88%) had eimerian oocysts in their feces at the time they were examined. Eighteen (58%) of the 31 infected animals were concurrently infected with 2 or 3 eimerian species. Four species of Eimeria were recovered and are described as new species based on the characteristics of sporulated oocysts. Oocysts of E. granifera n. sp. were ellipsoidal, 21.1 x 17.2 (15-26 x 11-20), μm with sporocysts ovoidal, 11.3 x 7.1 (8-14 x 5-9), μm. Oocysts of Eimeria montuosi n. sp. were spheroidal, 24.2 x 22.0 (21-28 x …

Cestodes Of The Genus Hymenolepis Weinland, 1858 Sensu Stricto From Pocket Gophers Geomys And Thomomys Spp. (Rodentia: Geomyidae) In Colorado And Oregon, With A Discriminant Analysis Of Four Species Of Hymenolepis, Scott Lyell Gardner, Gerald D. Schmidt

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Cestodes found to represent previously undescribed members of the genus Hymenolepis s. str. (Yamaguti, 1959) were recovered from pocket gophers, Geomys bursarius (Shaw), in northeastern Colorado. Hymenolepis weldensis n. sp. and H. geomydis n. sp., not occurring together in any individual host, were found in 3 and 8%, respectively, of pocket gophers examined for helminths. The life cycle of H. weldensis was completed in the laboratory using beetles, Tenebrio molitor (L.), as intermediate hosts, and pocket gophers of three genera (Geomys, Thomomys, and Pappogeomys) as definitive hosts. Development of H. weldensis did not …