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Implication Of An Environmentally Induced Hamartoma In Commercial Shrimps, Robin M. Overstreet, Thomas Van Devender Mar 1978

Implication Of An Environmentally Induced Hamartoma In Commercial Shrimps, Robin M. Overstreet, Thomas Van Devender

Harold W. Manter Laboratory of Parasitology: Faculty Publications

An overgrowth of muscle protruded through the ventral portion of the sixth abdominal segment of Penaeus aztecus and P. setiferus. This hamartoma was observed in 33 postlarval shrimp and is the first reported from a crustacean. Even though afflicted individuals represented a small proportion of the shrimp examined, nearly all such individuals were collected from the presumed most heavily polluted site. We suggest an unidentified pollutant as the cause of the abnormality.

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Permanent Light Microscopy Slides Of Eimeria Nieschulzi Oocysts, Alan A. Marchiondo, Donald W. Duszynski Feb 1978

Permanent Light Microscopy Slides Of Eimeria Nieschulzi Oocysts, Alan A. Marchiondo, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The methods described here allow for the preparation of light microscopy slides of coccidian oocysts and thus, provide a durable sample and record for research and teaching. These methods used only one species, Eimeria nieschulzi; however, it is likely that use of other coccidian oocysts would produce similar results.

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G78-417 Leptospirosis Of Domestic Animals, Donald B. Hudson Jan 1978

G78-417 Leptospirosis Of Domestic Animals, Donald B. Hudson

University of Nebraska-Lincoln Extension: Historical Materials

Leptospirosis of domestic animals is a very complex disease. This NebGuide examines its diagnosis, treatment, and prevention.

Introduction

Leptospirosis is an infectious disease of animals and man caused by a spiral-shaped organism (spirochete) of the genus Leptospira. The important serotypes recognized in livestock in the United States include Leptospira pomona, L. canicola, L. icterohaemorrhagiae, L. grippotyphosa and L. hardjo. These organisms have a wide host range, including man. Among domestic animals, swine, cattle, dogs, and horses are most frequently affected. Known wildlife hosts include many of the small rodents, raccoons, foxes, opossums, skunks, deer, and moose.

Because of the …

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Prehistoric Cremations From Nogales, Arizona *, Karl J. Reinhard, Jeff H. Shipman Jan 1978

Prehistoric Cremations From Nogales, Arizona *, Karl J. Reinhard, Jeff H. Shipman

Karl Reinhard Publications

In October, 1969, the Highway Salvage Section of the Arizona State Museum conducted emergency salvage excavations in conjunction with the construction of the Tucson-Nogales Highway. Ten cremations were recovered from a backhoe trench which had been placed within the city limits of Nogales, Arizona. Analysis of the cremations indicated cultural contact between the Trincheras culture of Sonora, Mexico, and the Hohokam culture of the Santa Cruz River Valley in southern Arizona.

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Food Of The Atlantic Croaker, Micropogonias Undulatus, From Mississippi Sound And The Gulf Of Mexico, Robin M. Overstreet, Richard W. Heard Jan 1978

Food Of The Atlantic Croaker, Micropogonias Undulatus, From Mississippi Sound And The Gulf Of Mexico, Robin M. Overstreet, Richard W. Heard

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The diet of the Atlantic croaker from Mississippi Sound has been examined for the first time. Over 83 taxa were encountered, or more than were reported from croaker in any other region. We also found 60 taxa, 36 of which overlapped with the above, in croaker from various offshore stations in the Gulf of Mexico. In Mississippi Sound the frequency of occurrcnce of items revealed primarily crustaceans followed by polychaetes, molluscs, fishes, and less common items, and, in the open Gulf, molluscs appeared slightly more often than in inshore croaker and than polychaetes in offshore fish. The diets were assessed …

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Food Of The Red Drum, Sciaenops Ocellata, From Mississippi Sound, Robin M. Overstreet, Richard W. Heard Jan 1978

Food Of The Red Drum, Sciaenops Ocellata, From Mississippi Sound, Robin M. Overstreet, Richard W. Heard

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Examined digestive tracts of the red drum in Mississippi Sound contained mostly decapod crustaceans. Crustaceans accounted for 34 of 59 encountered taxa, more than reported from any other region. Nevertheless, the general diet for 104 fish with food contents out of the 107 examined is similar to that reported for red drum in several other studies from other areas. In addition to crustaceans, fishes followed by polychaetes occurred as the most important items (in 99, 43, and 15% of the drum with food, respectively). Blue crabs occurred in even more drum than the frequently encountered penaeid shrimps. Other commercial species …

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Suppressed Rejection Of Trichinella Spiralis In Immunized Rats Concurrently Infected With Eimeria Nieschulzi, Donald W. Duszynski, Deborah Russell, Shirley A. Roy, Gilbert A. Castro Jan 1978

Suppressed Rejection Of Trichinella Spiralis In Immunized Rats Concurrently Infected With Eimeria Nieschulzi, Donald W. Duszynski, Deborah Russell, Shirley A. Roy, Gilbert A. Castro

Harold W. Manter Laboratory of Parasitology: Faculty Publications

This study deals with the effect of Eimeria nieschulzi infection on the host immune response to Trichinella spiralis. Six male Sprague-Dawley rats were inoculated with 104 and six with 106; sporulated E. nieschulzi oocysts. On days 2, 8, and 16 post-inoculation (PI), two rats from each infected group, and their paired uninfected controls, were killed and mucosal scrapings from their small intestines were assayed for peroxidase activity. Peroxidase levels were higher than corresponding control values on days 2 and 16 PI and significantly lower than the controls on day 8 PI. These data led us to …

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Poecilancistrium Caryophyllum And Other Trypanorhynch Cestode Plerocercoids From The Musculature Of Cynoscion Nebulosus And Other Sciaenid Fishes In The Gulf Of Mexico, Robin M. Overstreet Oct 1977

Poecilancistrium Caryophyllum And Other Trypanorhynch Cestode Plerocercoids From The Musculature Of Cynoscion Nebulosus And Other Sciaenid Fishes In The Gulf Of Mexico, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Examination of over 3,000 fish, all sciaenids, has shown that plerocercoids of Poecilancistrium caryophyllum infect Cynoscion nebulosus, Bairdiella chrysura, Sciaenops ocellata, C. arenarius, Micropogonias undulatus, and Pogonias cromis in Mississippi Sound. In addition to P. caryophyllum, a pseudophyllidean-like trypanorhynch also infected C. nebulosus and M. undulatus. Pseudogrillotia pleistacantha selectively infected large P. cromis, Pterobothrium heteracanthum infected M. undulatus, and Pterobothrium lintoni infected Menticirrhus americanus. Prevalence and intensity of infections of P. caryophyllum in C. nebulosus from Mississippi, roughly 40% of the fish each possessing an average of about two worms, …

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Herpetomonas Megaseliae And Crithidia Harmosa: Growth On Blood-Agar Plates, Amy Doran Kepel, John J. Janovy Jr. Oct 1977

Herpetomonas Megaseliae And Crithidia Harmosa: Growth On Blood-Agar Plates, Amy Doran Kepel, John J. Janovy Jr.

John J. Janovy, Jr. Publications

A technique for culturing two species of trypanosomatid flagellates on blood-agar plates is described. Herpetomonas megaseliae and Crithidia harmosa were grown as discrete clone colonies on plates prepared in sterile petri dishes with a medium derived from that of Tobie et al. (1950, J. Parasitol. 36: 48-54). Plates were inoculated with 0.01 ml flagellate suspension and the inoculum was spread evenly over the surface of the agar with a sterile glass spreader. Plates were incubated in a high humidity chamber at 25 C and colonies of both species, easily visible to the unaided eye, appeared within 1 week. There was …

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Myxosoma Funduli Kudo 1918 (Protozoa: Myxosporida) In Fundulus Kansae: Summer Epizootiology, Stephen A. Knight, John J. Janovy Jr., William L. Current Oct 1977

Myxosoma Funduli Kudo 1918 (Protozoa: Myxosporida) In Fundulus Kansae: Summer Epizootiology, Stephen A. Knight, John J. Janovy Jr., William L. Current

John J. Janovy, Jr. Publications

The occurrence and distribution of the myxosporidan Myxosoma funduli on the gills of the plains killifish (Fundulus kansae) were investigated; Fundulus kansae is reported as a new host. Host samples from various sites on the South Platte River, Nebraska, were collected during the summer months of 1975 and 1976. The protozoan parasite population was shown to be overdispersed within the host population, and this distribution was similar to that described by the negative binomial equation. Demographic characteristics of the infected fish subpopulation were virtually identical to those of the whole fish population. Infection intensity was independent of gill …

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Two New Zoogonid Digenea From Deep Sea Fishes In The Gulf Of Panama, Robin M. Overstreet, Mary Lou Hanson Pritchard Oct 1977

Two New Zoogonid Digenea From Deep Sea Fishes In The Gulf Of Panama, Robin M. Overstreet, Mary Lou Hanson Pritchard

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Panopula cavernossa gen. et sp. n. from the intestine of the brotulid Enchelybrotula (?) paucidens,/i> differs from other members of the Steganodermatinae by having testes near the anterior of the acetabulum, a posttesticular ovary, and a postequatorial acetabulum. Two related species are transferred to the genus Brachyenteron as B. pycnorganum comb. n. and B. spinosum comb. n. Neosteganoderma gillissi sp. n. from the synaphobranchid eel Synaphobranchus bathybius differs from N. glandulosum and N. polymixiae, the most similar species, because conspicuous glandular cells envelop the esophagus and pharynx, others about the genital atrium occur in elongated sacs, epithelium is lacking …

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Marine Aspidogastrids (Trematoda) From Fishes In The Northern Gulf Of Mexico, Sherman S. Hendrix, Robin M. Overstreet Oct 1977

Marine Aspidogastrids (Trematoda) From Fishes In The Northern Gulf Of Mexico, Sherman S. Hendrix, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Of the aspidogastrids Multicalyx cristata, Lobatostoma ringens, Cotylogaster basiri, and C. dinosoides sp. n., the last two had not been previously known from the Gulf of Mexico. The latter differs from other members of its genus by having relatively large equatorial marginal alveoli in comparison to those at the anterior and posterior ends of the holdfast. It also possesses extensive transverse musculature connecting opposed lateral alveoli. New host records are included for all four species, and we report preadults of what appear to be the first two species.

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Nematicidal Injection: Targeted Control Of Plant-Parasitic Nematodes Of Trees And Vines, D. R. Viglierchio, Armand R. Maggenti, R. V. Schmitt, G. A. Paxman Oct 1977

Nematicidal Injection: Targeted Control Of Plant-Parasitic Nematodes Of Trees And Vines, D. R. Viglierchio, Armand R. Maggenti, R. V. Schmitt, G. A. Paxman

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Pressurized injection of nematicidal solutions was effective for control of nematodes within trees and vines. Significant (P = 0.01) control of Pratylenchus vulnus on grape was attained with four nonfumigants (carbofuran, oxamyl, phenamiphos, and sulfocarb) and one fumigant nematicide (DBCP). Pratylenchus penetrans was controlled (P = 0.05 and 0.1) in apples and walnuts with sulfocarb and oxamyl. This species also was controlled in apples with carbofuran and phenamiphos. The advantages of pressure injection over traditional methods of nematicide applications are discussed.

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Monoecocestus Thomasi Sp. N. (Cestoda: Anoplocephalidae) From The Northern Flying Squirrel, Glaucomys Sabrinus (Shaw), In Oregon, Robert L. Rausch, C. Maser Oct 1977

Monoecocestus Thomasi Sp. N. (Cestoda: Anoplocephalidae) From The Northern Flying Squirrel, Glaucomys Sabrinus (Shaw), In Oregon, Robert L. Rausch, C. Maser

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Monoecocestus thomasi sp. n. (Cestoda: Anoplocephalidae), from the northern flying squirrel, Glaucomys sabrinus (Shaw), in Oregon, is described and distinguished from its congeners. Monoecocestus thomasi is the sixth species of Monoecocestus to be described from nearctic rodents, and the first from a member of the family Sciuridae. Our comparisons of taxonomic characters of the nominal species of Monoecocestus in North American rodents have shown that M. giganticus Buhler 1970 is a synonym of M. americanus (Stiles 1895), both from the porcupine, Erethizon dorsatum (Linnaeus). Insemination in Monoecocestus spp. is discussed, with the conclusion that it takes place only by way …

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The Immunizing Potential Of Sporulated Oocysts Of Eimeria Nieschulzi Exposed To Heat And Co-60 Gamma-Radiation, George A. Conder, Donald W. Duszynski Apr 1977

The Immunizing Potential Of Sporulated Oocysts Of Eimeria Nieschulzi Exposed To Heat And Co-60 Gamma-Radiation, George A. Conder, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Sporulated oocysts of Eimeria nieschulzi Dieben 1924, a rat coccidium, were exposed to radiation, heat, or both in an effort to attenuate the parasite. Moderate levels of each treatment or combination thereof attenuated the parasite, reduced pathogenesis (as judged by oocyst discharge during primary infection), and produced immunity to challenge when the oocysts were subsequently inoculated into rats. Thus, heat- and/or radiation-treated E. nieschulzi oocysts fed to rats could reduce pathogenesis during a primary infection and yet give good homologous protection.

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Life History And Host Specificity Of Mediorhynchus Centurorum Nickol 1969 (Acanthocephala: Gigantorhynchidae), Brent B. Nickol Feb 1977

Life History And Host Specificity Of Mediorhynchus Centurorum Nickol 1969 (Acanthocephala: Gigantorhynchidae), Brent B. Nickol

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Examination of 1905 arthropods from a swamp and surrounding pasture in southern Louisiana revealed larval specimens of Mediorhynchus centurorum in 8 of 228 woodroaches, Parcoblatta pensylvanica, but in no other species. The life cycle was confirmed by feeding eggs of M. centurorum to laboratory-reared woodroaches. Cystacanths later recovered from the woodroaches developed into mature worms when pipetted into esophaguses of red-bellied woodpeckers, Centurus carolinus; redheaded woodpeckers, Melanerpes erythrocephalus; yellow-shafted flickers, Colaptes auratus; and a hairy woodpecker, Dendrocopos villosus. Infection was achieved in all woodpeckers fed cystacanths at least 47 days old and the mean prepatent …

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Aploparaksis Borealis Sp. N. (Cestoda: Hymenolepididae) From Passeriform And Charadriiform Birds In Chukotka And Alaska, S. K. Bondarenko, Robert L. Rausch Feb 1977

Aploparaksis Borealis Sp. N. (Cestoda: Hymenolepididae) From Passeriform And Charadriiform Birds In Chukotka And Alaska, S. K. Bondarenko, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Aploparaksis borealis sp. n. (Cestoda: Hymenolepididae), from the long-tailed jaeger, Stercorarius longicaudus Vieillot, on the Seward Peninsula, Alaska, and from the red-throated pipit, Anthus cervinus (Pallas), and the Lapland longspur, Calcarius lapponicus (Linnaeus), in Chukotka, northeastern Siberia, is described. This cestode is distinguished by the structure of the cirrus and other morphologic characters from other species of Aploparaksis Clerc 1903 in which there are 10 rostellar hooks and the vitelline gland is aporal to the ovary. A. borealis is the first species of Aploparaksis to be reported from birds representing two orders (Passeriformes and Charadriiformes).

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Vibriosis In Fish, G. L. Bullock Jan 1977

Vibriosis In Fish, G. L. Bullock

United States Fish and Wildlife Service: Publications

Fish vibriosis is a systemic disease of marine, estuarine, and some freshwater fishes, caused by bacteria of the genus Vibrio (Ross et al. 1968, Ghittino et al. 1972). The disease has been known for centuries; outbreaks along the Italian coast were recorded as early as the 1500's. Terms such as "red pest," "red boil," "red plague," or "saltwater furunculosis" have been applied to vibrio infections, but vibriosis is a more specific term and is now used by most fishery workers. With the rapid development of mariculture, vibriosis has become a major cause of fish loss--sometimes to the extent of being …

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Spring Viremia Of Carp, Winfried Ahne, Ken Wolf Jan 1977

Spring Viremia Of Carp, Winfried Ahne, Ken Wolf

United States Fish and Wildlife Service: Publications

Dating back nearly SO years and possibly even to the Middle Ages, European pond culture of carp (Cyprinus carpio) and perhaps other cyprinid fishes has been plagued with a contagious disease of great importance. Variously known as infectious dropsy, infectious ascites, hemorrhagic septicemia, or rubella, the disease is probably the most serious cause of losses among these fishes; nearly sao reports have been published on the subject.

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Enucleation And Reconstruction Of Interferon-Producing Cells, D. C. Burke, G. Veomett Jan 1977

Enucleation And Reconstruction Of Interferon-Producing Cells, D. C. Burke, G. Veomett

School of Biological Sciences: Faculty Publications

Enucleation of L cells leads to loss of the capacity to produce interferon, showing that the cell nucleus is essential for interferon formation. However, when the cells were enucleated while interferon formation was proceeding, the cytoplasts were capable of continuing to synthesize interferon by a process shown to be protein synthesis, showing that the interferon messenger RNA leaves the nucleus after synthesis. Reconstructed cells were obtained by Sendai virus fusion of karyoplasts and cytoplasts. Such reconstructed cells were capable of producing at least as much interferon (43 interferon units/104 nucleated cells) as control cells (31 interferon units/104 nucleated …

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Absence Of Spermine In Filamentous Fungi, Kenneth W. Nickerson, Larry D. Dunkle, James L. Van Etten Jan 1977

Absence Of Spermine In Filamentous Fungi, Kenneth W. Nickerson, Larry D. Dunkle, James L. Van Etten

Papers in Microbiology

Polyamines were examined in several yeasts and filamentous fungi. Whereas putrescine, spermidine, and spennine were present in the yeasts, spernine was not detected in any of the filamentous fungi.

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Ultrastructure Of Interlamellar Henneguya Exilis In The Channel Catfish, William L. Current, John J. Janovy Jr. Dec 1976

Ultrastructure Of Interlamellar Henneguya Exilis In The Channel Catfish, William L. Current, John J. Janovy Jr.

John J. Janovy, Jr. Publications

Ultrastructural aspects of interlamellar Henneguya exilis infections in channel catfish are reported. The plasmodium wall of this form differs from that of other species in that it is composed of two outer unit membranes which give rise to a zone of numerous pinocytic canals. Single-membraned canals appeared to be a stable feature of the wall while double-membraned canals are interpreted as those actively carrying out pinocytosis. Evidence suggests that host cellular cytoplasm as well as interstitial material is taken in by plasmodia. Plasmodium wall integrity, aggregation of parasite ectoplasmic components, numbers of pinocytic canals, and number of mitochondria proximal to …

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Ultrastructure Of The Sporocyst Wall During Excystation Of Isospora Endocallimici, Clarence A. Speer, Alan A. Marchiondo, Donald W. Duszynski, Sharon K. File Dec 1976

Ultrastructure Of The Sporocyst Wall During Excystation Of Isospora Endocallimici, Clarence A. Speer, Alan A. Marchiondo, Donald W. Duszynski, Sharon K. File

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Sporocysts of Isospora endocallimici, a parasite of marmosets, were exposed to minimal essentials medium (MEM) or a trypsin-bile salt solution (TBS) and then fixed and prepared for trans- mission electron microscopy. Excystation occurred in TBS but not MEM. The sporocyst wall has 2 layers, a thin outer layer (15 to 110 nm thick) and a thick inner layer (65 to 180 nm thick), which is composed of 4 separate curved plates. The outer layer consists of 1 to 3 membranes interspersed with lipid droplets. In the inner layer, a thin layer of material connects the peripheral margins of 2 …

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Telorchis Gutturosi Sp. N. (Trematoda: Telorchiidae) From Graptemys Pseudogeographica Gray In Nebraska, With Reports Of Additional Species Of Trematodes From Nebraska Turtles, Daniel R. Brooks, Monte A. Mayes Dec 1976

Telorchis Gutturosi Sp. N. (Trematoda: Telorchiidae) From Graptemys Pseudogeographica Gray In Nebraska, With Reports Of Additional Species Of Trematodes From Nebraska Turtles, Daniel R. Brooks, Monte A. Mayes

Harold W. Manter Laboratory of Parasitology: Faculty Publications

One species of digenean is described and 8 others reported from turtles in Nebraska. Telorchis gutturosi, described from Graptemys pseudogeographica, resembles T. stossichi, T. pseudoaculeatus, and T. pleroticus in having an acetabulum significantly smaller than the oral sucker, but differs by possessing a pharynx which is as large as the acetabulum and having the ovary only 1/10 the body length from the acetabulum. Telorchis necturi is considered the senior synonym of T. cryptobranchi; Graptemys pseudogeographica is a new host. Hapalorhynchus stunkardi is reported for the first time since its description. Based on new morphological evidence, …

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Some Platyhelminth Parasites Of Sirens (Amphibia: Sirenidae) From North America, Daniel R. Brooks, Richard L. Buckner Dec 1976

Some Platyhelminth Parasites Of Sirens (Amphibia: Sirenidae) From North America, Daniel R. Brooks, Richard L. Buckner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A new genus and species of digenean and a new species of cestode are described and a previously described species of digenean reported for the first time from Siren intermedia from Illinois. A new genus is proposed for a previously described digenean, and another known species of digenean reported from Siren lacertina in Florida. Progorgodera foliata from S. intermedia has a foliate hind- body characteristic of members of Phyllodistomum and multiple testes arranged in 2 longitudinal rows characteristic of members of Gorgodera. Ophiotaenia sireni from the same host resembles O. filaroides in number of testes, O. amphiumae and O. …

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Two Tetraphyllidean Cestodes From The Freshwater Stingray Potamotrygon Magdalenae Dumeril 1852 (Chondrichthyes: Potamotrygonidae) From Colombia, Daniel R. Brooks, Thomas B. Thorson Dec 1976

Two Tetraphyllidean Cestodes From The Freshwater Stingray Potamotrygon Magdalenae Dumeril 1852 (Chondrichthyes: Potamotrygonidae) From Colombia, Daniel R. Brooks, Thomas B. Thorson

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Two new tetraphyllidean cestodes are described from the freshwater stingray Potamotrygon magdalenae from Colombia. The new genus Potamotrygonocestus is proposed for P. magdalenensis, which differs from Pedibothrium by having a bilobed rather than X-shaped ovary, and simple rather than bifid hooks. It further differs from Pachybothrium hutsoni by having bothridial hooks inserted immediately posterior to an accessory sucker rather than inserted in the middle of a thick muscular pad. Potamotrygonocestus magdalenensis is unique among known tetraphyllideans by possessing vitellaria which are compact, cylindrical bands in the lateral portions of the middle of the proglottid. The second new species, Rhinebothrium …

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Fabespora Vermicola Sp. N., The First Myxosporidan From A Platyhelminth, Robin M. Overstreet Oct 1976

Fabespora Vermicola Sp. N., The First Myxosporidan From A Platyhelminth, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The myxosporidan Fabespora vermicola sp. n., tentatively placed in the family Myxidiidae, is described from the digenean Crassicutis archosargi in an estuarine fish. The myxosporidan becomes the first known from a platyhelminth and the third from an invertebrate. It differs from the only other member of the genus primarily by having polar filaments 32 to 44 μm long rather than about 8 μm, and an infection with it can stop reproduction in the digenean host either by physical means or by necrosis of gametes.

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A Redescription Of Crassicutis Archosargi, A Digenean Exhibiting An Unusual Tegumental Attachment, Robin M. Overstreet Oct 1976

A Redescription Of Crassicutis Archosargi, A Digenean Exhibiting An Unusual Tegumental Attachment, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The homalometrine Crassicutis archosargi from the northern Gulf of Mexico is redescribed, and some related digeneans are discussed. Numerous unidentified refractile bodies occurred in the tegument and other tissues of a few specimens of C. archosargi, and an intimate relationship between the parasite and its piscine host resulting from a modified tegument is reported for others. Binding by the described adhesive tegument increases the number of known ways digeneans attach to their hosts. Several specimens also harbored a histozoic myxosporidan in several tissues and a flagellate, Hexamita sp., in their ceca.

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Anesthetization Of Morphologically Similar Species With Carbon Dioxide For Separation And Culture, Gregory R. Noel, Armand R. Maggenti Jul 1976

Anesthetization Of Morphologically Similar Species With Carbon Dioxide For Separation And Culture, Gregory R. Noel, Armand R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Nematologists frequently encounter congeneric species in sampling for nematodes. No convenient method for the separation of morphologically similar species has been described. For Meloidogyne spp., inoculum consisting of hundreds of eggs can be easily obtained from a single egg mass and a pure population reared on a suitable host. The separation and culture of other plant parasitic nematode species, such as Paratrichodorus spp., is often more difficult. The species may be separated by placing a single female in the rhizosphere of a host plant, but the chances of a single nematode increasing to a high population in a short time …

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Neodeuterobaris Pritchardae Gen. Et Sp. N. (Digenea: Microscaphidiidae) In A Sideneck Turtle, Podocnemis Lewyana Dumeril 1852, From Colombia, Daniel R. Brooks Jun 1976

Neodeuterobaris Pritchardae Gen. Et Sp. N. (Digenea: Microscaphidiidae) In A Sideneck Turtle, Podocnemis Lewyana Dumeril 1852, From Colombia, Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Neodeuterobaris pritchardae in the stomach of the freshwater turtle, Podocnemis lewyana, from Colombia resembles members of Deuterobaris in possessing ventral glands, a dorsal oral hood, and vitelline follicles confluent posteriorly, but apparently differs from them by possessing 5 rather than 7 rows of ventral glands; by lacking ventral spines, extracecal uterine loops, and a muscular esophageal bulb; and by inhabiting the stomach of freshwater turtles rather than the intestine of marine turtles. Those characters are considered significant enough to erect a new genus. Diagnosis of the Deuterobaridinae is emended to accommodate the new species.

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