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Full-Text Articles in Life Sciences

Heligmosomoides Johnsoni Sp. Nov. (Nematoda: Heligmosomatidae) From The Heather Vole, Phenacomys Intermedius Merriam, Virginia R. Rausch, Robert L. Rausch Dec 1973

Heligmosomoides Johnsoni Sp. Nov. (Nematoda: Heligmosomatidae) From The Heather Vole, Phenacomys Intermedius Merriam, Virginia R. Rausch, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Heligmosomoides johnsoni sp. noy. is described from the cecum of the heather vole, Phenacomys intermedius Merriam, from the Olympic Mountains, Washington. The absence of longitudinal cuticular ridges dorsally separates H. johnsoni from species of Heligmosomoides other than H. hudsoni (Cameron, 1937), which occurs in varying lemmings, Dicrostonyx spp., and from which H. johnsoni is distinguished by its longer spicules, form of the dorsal ray, and other characters. Both Phenacomys and Dicrostonyx have a specialized cecum, with long villi around which the nematodes are found tightly coiled. The zoogeography of heligmosomid nematodes in Phenacomys is briefly discussed.

French abstract: On décrit …


Nsca - Asc - National Plan For Biological Collections, Asc Committee Dec 1973

Nsca - Asc - National Plan For Biological Collections, Asc Committee

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

American systematics collections: A national plan. Developed by a stellar group of biologists including David Wake and Peter Raven, this plan called for action by the systematics community. The estimate of needs in 1973 called for about 63 million USD for the next five years just to keep the US National Collections from disintegrating and to get them in shape to mount the huge effort needed to fully inventory the biota of the earth (a plan that was not even dreamed of until about the year 1995).

A report to the nation's systematics collections community, and includes a National Plan …


Diphyllobothrium Ursi From Man In British Columbia--First Report Of This Tapeworm In Canada, Leo Margolis, Robert L. Rausch, E. Robertson Nov 1973

Diphyllobothrium Ursi From Man In British Columbia--First Report Of This Tapeworm In Canada, Leo Margolis, Robert L. Rausch, E. Robertson

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

A case of human infection in British Columbia by the tapeworm Diphyllobothrium ursi is reported and the likely source of infection is discussed. This is the first report of D. ursi in Canada and the third from humans.


The Effects Of Soil Salinity And Meloidoflyne Javanica On Tomato, Armand R. Maggenti, Adnan Hardan Oct 1973

The Effects Of Soil Salinity And Meloidoflyne Javanica On Tomato, Armand R. Maggenti, Adnan Hardan

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

A non-sodic, non-saline sandy loam soil was salinized to anion-cation ratios similar to those naturally occurring in Iraq and California. The interactions of saline soils (conductivities 4, 8, 12 and 16 mmhos/cm) with a moderately salt-tolerant plant (Lycopersicon esculentum 'Marimond') and a plant parasitic nematode (Meloidogyne favanica) were investigated. Plant parasitic nematodes were shown to be an important modifying influence within the plant environment, either accentuating or ameliorating salinity stress effects.


The Other Side Of Biology, John J. Janovy Jr. Oct 1973

The Other Side Of Biology, John J. Janovy Jr.

John Janovy Publications

Discusses biology as increasingly multidisciplinary.


Location Of Grapevine Fanleaf And Yellow Mosaic Virus Particles In Xiphinema Index, D. J. Raski, Armand R. Maggenti, N. O. Jones Jul 1973

Location Of Grapevine Fanleaf And Yellow Mosaic Virus Particles In Xiphinema Index, D. J. Raski, Armand R. Maggenti, N. O. Jones

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Particles of fanleaf and yellow mosaic viruses are reported in the lumen of the esophagus of Xiphinerna index. Differences in cuticular morphology suggest differences in charged receptor sites which may offer an explanation for virus location and orderly arrangement.


Cathetocephalus Thatcheri Gen. Et Sp. N. (Tetraphyllidea: Cathetocephalidae) Fam. N. From The Bull Shark, Murray D. Dailey, Robin M. Overstreet Jun 1973

Cathetocephalus Thatcheri Gen. Et Sp. N. (Tetraphyllidea: Cathetocephalidae) Fam. N. From The Bull Shark, Murray D. Dailey, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Cathetocephalus thatcheri gen. et sp. n. is described from the spiral valve of the bull shark, Carcharhinus leucas (Valenciennes), taken in the Gulf of Mexico and the Atlantic coast of Florida. A new family is erected for the new genus. The species most closely resembles Pillersium owenium Southwell, 1927, in that both possess a scolex which is perpendicular to the long axis of the strobila. It differs, however, in having a single neck and holdfast organ rather than a bifurcate neck with two bothridia. Also, the surfaces of the scolex differ from those of P. owenium by possessing fleshy papilliform …


Seasonal Carbon Dioxide And Oxygen Concentrations In The Dens Of Hibernating Mammals (Sciuridae), D. D. Williams, Robert L. Rausch Apr 1973

Seasonal Carbon Dioxide And Oxygen Concentrations In The Dens Of Hibernating Mammals (Sciuridae), D. D. Williams, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

This paper reports seasonal changes in respiratory gases in artificial dens of two species of hibernators indigenous to central and northern Alaska: Citellus parryi ablusus(Osgood) and Marmota broweri Hall and Gilmore (Sciuridae).


Some Species Of Lecithaster Lühe, 1901 (Digenea: Hemiuridae) And Related Genera From Fishes In The Northern Gulf Of Mexico, Robin M. Overstreet Apr 1973

Some Species Of Lecithaster Lühe, 1901 (Digenea: Hemiuridae) And Related Genera From Fishes In The Northern Gulf Of Mexico, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Lecithaster helodes n. sp. is described from Mugil curema and M. cephalus. It differs from the closely related L. mugilis Yamaguti, 1970 by having four rather than three ovarian lobes and other minor differences. Discussions and measurements are presented for L. confusus Odhner, 1905, L. leiostomi Overstreet, 1970, Hysterolecitha elongata Manter, 1931, Aponurus pyriformis (Linton, 1910) n. comb., and A. elongatus Siddiqi & Cable, 1960. Branchadena Linton, 1910 is considered a synonym of Aponurus Looss, 1907. New host records are listed for some of the above hemiurid trematodes. Leurodera ocyri Travassos, Frietas & Bihrnheim, 1965 and L. inaequalis Travassos, …


Structure Of The Oocysts And Excystation Processes Of Four Eimeria Spp. (Protozoa: Eimeriidae) From The Colorado Pika, Ochotona Princeps, Donald W. Duszynski, John T. Brunson Feb 1973

Structure Of The Oocysts And Excystation Processes Of Four Eimeria Spp. (Protozoa: Eimeriidae) From The Colorado Pika, Ochotona Princeps, Donald W. Duszynski, John T. Brunson

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Oocysts of Eimeria banffensis Lepp, Todd, and Samuel, 1972, Eimeria cryptobarretti sp. n., Eimeria princepsis sp. n., and Eimeria calentinei sp. n. are described from the Colorado pika, Ochotona princeps, collected from 3 mountain sites in Colorado. Subspherical oocysts of E. banffensis measure 23 to 34 by 18 to 25 μ (mean 27.6 by 23.0 μ) with ovoid sporocysts 10 to 16 by 7 to 10 μ (mean 12.5 by 8.5 μ). A micropyle, oocyst residuum, and polar granule are absent, but a sporocyst residuum, Stieda body, and substiedal body are present. The ellipsoidal oocysts of E. cryptobarretti measure …


Anthelmintics For Nematode Parasites Of Fish: Ii. Aqueous Anthelmintic Bath Treatments Using Diethyl 2-Chlorovinyl Phosphate And 2,2 Dichlorovinyl Dimethyl Phosphate For Control Of Sterliadochona Pedispicula In Salmo Gairdnerii, A. R. Maggenti Jan 1973

Anthelmintics For Nematode Parasites Of Fish: Ii. Aqueous Anthelmintic Bath Treatments Using Diethyl 2-Chlorovinyl Phosphate And 2,2 Dichlorovinyl Dimethyl Phosphate For Control Of Sterliadochona Pedispicula In Salmo Gairdnerii, A. R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

The toxicity of diethyl 2-chlorovinyl phosphate (SD1836) and 2,2 dichlorovinyl dimethyl phosphate (DDVP) was tested as an "in-water" treatment of rainbow trout and in vitro against the internal nematode parasite of fish, Sterliadochona peclispicula. As an "in-water" anthelmintic treatment SD1836 was 100% effective at concentrations of 25 fL liters/liter for 24 hr and 5 μ liters/liter for 72 hr; no toxic effects to rainbow trout were noted with these treatments.


Acanthobothrium Urolophi Sp. N., A Tetraphyllidean Cestode (Oncobothriidae) From An Australian Stingaree, Gerald D. Schmidt Jan 1973

Acanthobothrium Urolophi Sp. N., A Tetraphyllidean Cestode (Oncobothriidae) From An Australian Stingaree, Gerald D. Schmidt

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Acanthobothrium urolophi sp. n. is described from a common stingaree, Urolophus testaceus, from South Australia. It differs from all other species in being apolytic and acraspedote, in having hooks 105-115 μ- long, one accessory sucker 80-90 wide on each bothridinm, and 40-72 testes in two longitudinal rows.


Ec73-1907 Internal Parasites Of Cattle, D. L. Ferguson Jan 1973

Ec73-1907 Internal Parasites Of Cattle, D. L. Ferguson

University of Nebraska-Lincoln Extension: Historical Materials

Extension Circular 73-1907 is about internal parasites in cows and how they affect cattle production.

Internal parasites continue to be one of the major problems confronting cattle producers. In 1965, the United States Department of Agriculture estimated that internal parasites in cattle caused an average annual loss of $161,678,000. The internal parasites responsible for the annual loss are listed below.

Anaplasmosis. .$ 36,001,000

Coccidiosis . . . .14,569,000

Worm Parasites .100,046,000

Liver Flukes . . . 3,022,000

Trichomoniasis .. 8,040,000

In cattle the effects of internal parasites will be well camouflaged. However, additional feed will be required to reach market …


Lice Of Public Health Importance And Their Control, Harry D. Pratt, Kent S. Littig Jan 1973

Lice Of Public Health Importance And Their Control, Harry D. Pratt, Kent S. Littig

Harold W. Manter Laboratory: Library Materials

Lice have been intimately associated with man for centuries. Infestations with lice occur today in the United States and many other countries despite great efforts to maintain high standards of public health. Public health agencies are often called upon if infestations include or expose large groups of people, particularly those in public institutions such as schools, jails, hospitals, or homes for the aged.

The three sucking lice that infest humans are: the body louse (Pedlculus humanus humanus), the head louse (Pediculus humanus capitis), and the crab louse (Pthirus pubis). The body louse is the …


Anthelmintics For Nematode Parasites Of Fish: I. Control Of Sterliadochona Pedispicula In Salmo Gairdnerii By Diethyl 2-Chlorovinyl Phosphate And 2,2 Dichlorovinyl Dimethyl Phosphate Pellets, A. R. Maggenti Jan 1973

Anthelmintics For Nematode Parasites Of Fish: I. Control Of Sterliadochona Pedispicula In Salmo Gairdnerii By Diethyl 2-Chlorovinyl Phosphate And 2,2 Dichlorovinyl Dimethyl Phosphate Pellets, A. R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Tests indicate that the oral administration of diethyl 2-chlorovinyl phosphate (SD1836) and 2,2 dichlorovinyl dimethyl phosphate (DDVP) plastic-incorporated pellets significantly reduces the intestinal nematode parasite Sterliadochona pedispicula in wild rainbow trout. No evidence of fish toxicity was noted with the treatments and dosages tested.


Parasites Of Some Penaeid Shrimps With Emphasis On Reared Hosts, Robin M. Overstreet Jan 1973

Parasites Of Some Penaeid Shrimps With Emphasis On Reared Hosts, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Information is presented about parasites and commensals of penaeid shrimps, allowing those who rear shrimps and those who are interested in associated organisms of shrimp to have a better knowledge of the organisms that are or may be associated with brown, white, and pink shrimps. It covers common and rare organisms and diseases, primarily in the northern Gulf of Mexico, listing several previously unreported species including an undescribed gregarine, a larval nematode (Spirocarnallanus pereirai), a commensal nematode (Leptolaimus sp.), a leech (Myzobdella lugubris), a blue-green alga (Schizothrix calcicola), a hydroid (Obelia bicuspidata …


Plagioporus Hypentelii Sp. N. (Trematoda: Opecoelidae) From The Hogsucker, Hypentelium Nigricans (Lesueur) (Osteichthys: Catostomidae), Sherman S. Hendrix Jan 1973

Plagioporus Hypentelii Sp. N. (Trematoda: Opecoelidae) From The Hogsucker, Hypentelium Nigricans (Lesueur) (Osteichthys: Catostomidae), Sherman S. Hendrix

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Plagioporus hypentelii sp. n. (Trematoda: Opecoelidae) is described from the intestine of the hogsucker, Hypentelium nigricans (LeSueur), in streams of Adams County, Pennsylvania. It most closely resembles P. serotinus Stafford, 1904, but differs from it chiefly in its less elongate shape, smaller size, smaller testes, ovary, and eggs, straight cirrus sac, in hosts and geographic location of the hosts.