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The Functional Ecology Of Submerged Aquatic Vegetation In The Lower Chesapeake Bay, Richard L. Wetzel, Kenneth L. Webb, Polly A. Penhale, Robert J. Orth, Donald F. Boesch, John V. Merriner

Reports

The research program, "The Functional Ecology of Submerged Aquatic Vegetation in the Lower Chesapeake Bay" (EPA/CBP Grant No. R805974), is an integrative effort composed of seven principal investigators. The research team has worked since July 1978 at one study site, the Vaucluse Shores area, to develop and institute a coherent research program on SAV ecological relationships.

The principal studies have focused on plant productivity, metabolism and nutrient cycling, the role of resident consumers in SAV community dynamics, the role of migratory species and efforts to develop a realistic, ecosystem simulation model of SAV communities.

The preliminary results of the first …

Sensing The Sea : A Curriculum Guide In Marine Education For Grades Kindergarten And First, Ellen Odell-Fisher, Ronald N. Giese

Reports

No abstract provided.

An Environmental Assessment Of The Summer Plankton In The Vicinity Of The C.P. Crane Generating Station, George C. Grant, Stephen P. Berkowitz

Reports

A preliminary survey of summer plankton in ·waters surrounding the C. P. Crane generating station in Bengies, Maryland, revealed several possible effects of plant operation. These perturbations were separated into apparent small-scale and large-scale effects:

Small-scale effects were limited to the immediate discharge region of Saltpeter Creek and included (1) occasional elevation of temperatures at the surface (in August) to above the lethal limit for most zooplankton and sufficiently high to inhibit photosynthesis, (2) a decrease in chlorophyll-a, seen in July and August, (3) a sharp decrease in productivity, also in July and August, and (4) absence of a common …

A New Roe Knife, Jim Zaborski

Reports

No abstract provided.

Estuarine Response To Nutrient Enrichment, A Counterpart Of Eutrophication : A Bibliography, K. L. Webb, D. M. Hayward, J. M. Baker, B. Murray

Reports

This work is a result of our efforts to compile the literature related to the results of nutrient enrichment of estuaries. It consists of two related publications, a bibliography and an annotated bibliography; both works are accompanied by an index which applies to either bibliography. An attempt has been made to include a few key papers related to various processes, eg nutrient uptake by phytoplankton, which influence or participate in the response process.

Specimen Catalog & Field Notes, Elizabeth Boyd

Division of Mammals - Field Notes and Catalogs

No abstract provided.

Effects Of Thyrotoxicosis On Mitochondrial Enzymes Of Rat Soleus, James B. Courtright, Robert H. Fitts

Biological Sciences Faculty Research and Publications

Cytochrome oxidase, glycerol-3-phosphate dehydrogenase, and succinate dehydrogenase were measured in mitochondrial fractions obtained from rat soleus muscle of control and 8 week T₃ + T₄ treated animals. Under these conditions of prolonged treatment, there is a five-fold increase in the specific activities of both cytochrome oxidase and glycerols-3-phosphate dehydrogenase. Significant increases in total cellular mitochondrial content and enzyme activities were observed in T₃ + T₄ treated animals as compared to controls. These results indicate that thyrotoxicosis can induce selective changes in mitochondrial enzymes in slow twitch red (Type I) muscle fibers.

The Role Of Cuticular Strata Nomenclature In The Systematics Of Nemata, Armand R. Maggenti

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

A system of cuticular nomenclature based on the strata observed in Enoplia is proposed. Nematode cuticle is divided into four fundamental strata: epicuticle, exocuticle, mesocuticle, and endocuticle. Application of this system allows the correlation of complementary strata throughout Nemata. The major taxonomic categories within Nemata are differentiated on the basis of their cuticular strata as compared with the Enoplia model cuticle.

A Filamentous Bacterium On The Brine Shrimp And Its Control, Mobashir A. Solangi, Robin M. Overstreet, Ann L. Gannam

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

A strain of a colorless, filamentous bacterium (tentatively identified as Leucothrix mucor) heavily infests the brine shrimp, Artemia salina. Its ultrastructure, unlike that of some other strains, does not reveal a distinct middle layer between its outer cell wall layer and cytoplasmic membrane, irregular blebs extending from the cell layers, or an external sheath. An entire infestation, represented as a mat of the bacterium with associated debris and microorganisms, sloughs from the shrimp when exposed to a variety of treatments. Primarily because most effective treatments are toxic to the shrimp, 100 ppm terramycin provides the treatment of choice.

Preface To Host-Parasite Interactions, Edited By Brent B. Nickol, Brent B. Nickol

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

Preface to Host-Parasite Interactions, edited by Brent B. Nickol, proceedings of a symposium held at the University of Nebraska-Lincoln, Lincoln, Nebraska, U.S.A., October 5-7, 1977.

Scanning And Transmission Electron Microscopy Of The Oocyst Wall Of Isospora Lacazei, Clarence A. Speer, Alan A. Marchiondo, Bodo Mueller, Donald W. Duszynski

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

The oocyst wall of Isospora lacazei from sparrows was studied with scanning (SEM) and transmission (TEM) electron microscopy. In TEM, t he oocyst wall consisted of four distinct layers (Ll-4). The innermost layer, Ll, was moderately electron-lucent and 240-285 nm thick; L2 was electronJense and 210-240 nm thick; L3 was moderately electron-lucent and 15-150 nm thick; L4, the outer most layer, was discontinuous and consisted of electron-dense discoid bodies which measured 180-220 nm x 320-840 nm. The discoid bodies of L4 as seen by TEM appeared spheroid in shape when observed by SEM. One or two membranes were situated on …

Endoparasites, John E. Ubelaker, Robert D. Specian, Donald W. Duszynski

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

The leaf-nosed bats of the New World family Phyllostomatidae occur from the southwestern United States through tropical Central and South America. Members of this family are also found throughout the Antilles. The ecological associations of the species in this family seem to be rather broad; species are found in humid tropical to semiarid and arid subtropical environments. Diversity in feeding is readily apparent ranging from nectivores (Glossophaga), frugivores (Artibeus), sanguivores (Desmodus), to omnivores (Phyllostomus) (see review by Glass, 1970; Gardner, this volume).

To understand better the biology of phyllostomatid bats, it is …

Differentiation Of Fourth And Early Fifth Stages Of Parascaris Equorum (Goeze, 1782) Nematoda: Ascaridoidea, P. A. Pilitt, J. R. Lichtenfels, P. A. Madden

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

The morphology of Parascaris equorum of horses was studied; light and scanning electron microscopy were used. Late fourth-stage larvae have narrow, rectangular lips bearing few, large. triangular, irregularly spaced denticles and the lips are not markedly set off from the body. The cutick of the late fourth stage is completely transversely striated, with incomplete longitudinal ridges creating a brickwork pattern; longitudinal alae are present. Total body lengths of fourth-stage larvae range from 10 to 32 mm. A single molting fourth-stage male was found to be 33 mm long. Early fifthstage nematodes have wide, trilobate lips with a deep transverse groove …

Paravitellotrema Overstreeti Sp. N. (Digenea: Hemiuridae) From The Colombian Freshwater Stingray Potamotrygon Magdalenae Dumeri, Daniel R. Brooks, Monte A. Mayers, Thomas B. Thorson

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

Paravitellotrema overstreeti from the freshwater stingray Potamotrygon magdalenae in northern Colombia most closely resembles P. thorsoni by possessing a muscular sinus organ and sinus sac as well as exhibiting a saccate rather than elongate prostatic vesicle, It differs by possessing lobate rather than spherical vitellaria, a smaller sinus organ and sinus sac, elongate rather than diamond-shaped prostatic cells enclosed in a delicate membrane rather than free in the parenchyma, and a metraterm joining the hermaphroditic duct immediately anterior to the prostatic vesicle rather than at the base of the sinus organ,

Neopronocephalus Orientalis Sp. N. (Digenea: Pronocephalidae) And Spirhapalum Elongatum Rohde, Lee, And Lim, 1968 (Digenea: Spirorchiidae) From Cuora Amboinensis (Daudin) In Malaysia, Daniel R. Brooks, James R. Palmieri

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

Neopronocephalus orientalis from Cuora amboinensis in Malaysia most closely resembles N. spinometraterminis from Kachuga tectum tentoria in India by possessing postovarian cecal tips and an average of more than 30 vitelline follicles, but differs by having equatorial rather than preequatorial testes which are mostly intercecal rather than extracecal and a slightly smaller cirrus sac, Neopronocephaius spinometraterminis purportedly has spines in the metraterm and a common genital pore, whereas N . orientalis exhibits nonstaining wrinkled epithelium lining the metraterm and separate genital pores. Spirhapalum elongatum was also collected from its type host near the type locality.

New Records For Amphibian And Reptile Trematodes, Daniel R. Brooks

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

From 1975 to 1978, 200 amphibians and reptiles from localities in Nebraska, Arkansas, Oklahoma, Louisiana, Mississippi, Florida, North Carolina, and West Virginia were examined for trematode parasites. This report provides additional information concerning the geographical distribution of North American amphibian and reptile trematodes. Some results have already been published (Brooks and Fusco, 1978, J. Miss. Acad. Sci. 23:95-99). Worms, removed from their hosts, were examined alive when possible, and fixed with AFA after flattening with slight coverslip pressure. Specimens were stored in 7{)1lO ethanol, then stained with Mayer's hematoxylin and mounted in Histoclad or Canada balsam for study as whole …

Differentiation Of Fourth And Early Fifth Stages Of Parascaris Equorum (Goeze, 1782) Nematoda: Ascaridoidea, P. A. Pilitt, J. R. Lichtenfels, P. A. Madden

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

The morphology of Parascaris equorum of horses was studied; light and scanning electron microscopy were used. Late fourth-stage larvae have narrow, rectangular lips bearing few, large . triangular, irregularly spaced denticles and the lips are not markedly set off from the body. The cuticle of the late fourth stage is completely transversely striated, with incomplete longitudinal ridges creating a brickwork pattern; longitudinal alae are present. Total body lengths of fourth-stage larvae range from 10 to 32 mm. A single molting fourth-stage male was found to be 33 mm long. Early fifthstage nematodes have wide, trilobate lips with a deep transverse …

Oligacanthorhynchus Lamasi (Freitas And Costa, 1964) Comb. N. From Domestic Cats Of Brazil, J. F.R. Amato, Brent B. Nickol, O. M. Froes

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

Freitas and Costa (1964, Arq. Esc. Vet. Univ. Fed. Minas Gerais 16:231-234) described a new species, Echinopardalis lamasi, from two acanthocephalans (1 male, 1 female) of a cat, Felis domestica (=F. catus), captured in Belo Horizonte, Minas Gerais. These specimens have been lost (Freitas, 1975, personal communication). Until two of 127 domestic cats, F. catus, from Porto Alegre, Rio Grande do SuI, captured between October 1973 and July 1976, were found to harbor respectively two and nine acanthocephalans conspecific with those described by Freitas and Costa, no additional specimens of this species were available for study. These new specimens assist …

Glucocorticoid Modulation Of Casein Gene Transcription In Mouse Mammary Gland, Ranjan Ganguly, Nozer M. Mehta, Nivedita Ganguly, M. R. Banerjee

School of Biological Sciences: Faculty Publications

The influence of cortisol and prolactin on casein gene expression in the mammary gland of lactating BALB/c mice was measured by using a specific cDNA probe to 15S casein mRNA (cDNA_csn). Casein mRNA (mRNA_csn) level in the mammary gland was decreased by 85% 5 days after adrenal ablation, but then was increased 4.4-fold 12 hr after a single injection of hydrocortisone-21-acetate. An 80% decrease in serum prolactin level, induced by the prolactin inhibitor 2- bromo-α-ergocryptin (CB-154), did not alter the level of mRNA_csn in the gland. Specific transcription of the casein gene in nuclei isolated …

Long Term Rotation Trials, I Rowland

Experimental Summaries - Plant Research

Locality: 66M29, 67Cl3, 67N4, 68E5, 68SG5, 73SG16. Soil type, history, rainfall and wheat/lupin yields.

Comparison Of Carbon And Nitrogen Content Of Infected And Uninfected Snails, Succinea Ovalis, And The Trematode Leucochloridium Variae, Albert J. Burky, Daniel J. Hornbach

Biology Faculty Publications

In June, 6.7% of adult Succinea ovalis collected near Urbana, Ohio, were infected with the trematode, Leucochloridium variae. The effects of parasitism were assessed as total organic carbon (equivalent to calorific values) and as total nitrogen. The parasite represents 23.8% of total (parasite + snail tissue) dry tissue weight, 21.4% of total carbon and 19.8% of total nitrogen of infected snails. The higher C:N ratio for parasite tissue indicates a higher proportion of nonproteinaceous compounds (e.g., fats and/or carbohydrates) as compared to host tissue. There is less snail tissue in parasitized S. ovalis. The C:N ratios for parasitized and nonparasitized …

1979 Pasture Species Investigations - High Rainfall Area, D A. Nicholas

Experimental Summaries - Plant Research

Contents. 1. Clover cultivar grazing trial - 68NA1 - N. Bannister. 2. Perennial versus annual grass grazing trial - 72MN5 - Manjimup Research Station. 3. Pasture types demonstration - 72D1 - Denmark Agricultural High School. 4. 76MT3 - Trikkala evaluation trial - Mt Barker Research Station - see also report of D.J. Gillespie and separate progress report. 5. Clover cultivar evaluation trials: 77AL22 - Wellstead. 77BU10 - Karridale. 77D5 - Denmark Research Station. 78BR16 - Darradup. 78BU15 - Jindong. 78DE1 - Tingledale. 78MN5 - Manjimup Research Station. 79BY6 - Waterloo. 79ES35 - North Merivale. 79ES36 - Mount Merivale. 79MA12 - …

Nitrogen Fertilisers For Rape (Brassica Campestris And B Napus) And Wheat In Western Australia, M G. Mason

Technical Bulletins

Absolute yield increases tended to be greater for wheat than rape at 63 per cent of the nitrogen responsive sites, but percentage yield increases and rate of N for maximum yield tended to be greater for rape than for wheat. When average response curves over all trials were considered, there was little difference between the two crops in terms of percentage responsiveness and N rate for maximum yield in areas with less than 460 mm average rainfall, but in higher rainfall areas the response to N was higher.

Cereal, Pasture Legume And Water Supply Prospects At Forrestania : Results Of Experimental Work East Of Hyden, Western Australia, T E. Mcdowell, M G. Mason, J W. Gartrell, William J. Toms, I A F Laing

Technical Bulletins

The agricultural potential of the Forrestania area appears at least equal to that of much of the settled eastern wheatbelt. The scrubplain soils of the Forrestania area have an average yield potential of at least 1 000 kg/ha wheat and carrying capacity of 1.8 to 3.7 sheep per hectare on improved pastures. The use of clover ley rotations would maintain these levels of potential yield. Partial crop failures caused by adverse seasonal conditions could be expected 10 years in every 100.

Summary Of Experimental Results 1979, W. J. Cox

Experimental Summaries - Plant Research

79N3 Nutrient Spray application on wheat - Newdegate Research Station, Paddock 1EB 79BA3 Nutrient Spray application on wheat - Badgingarra Research Station 79MT1 Nutrient spray application on wheat and lupins - Mt Barker Research Station, Paddock N1B 79LG1 Rates of Potassium on wheat - Riverton Estate, Walyurin 79ME1 Rates of Potassium on wheat - Koorda 79GE1 Rates of Potassium on wheat - Irwin 78GE5 Rates, times and sources of K residual - Irwin 79MO2 Phosphorous and potassium requirement of wheat and lupins 79TS1 Definition of Wodgil soil problem - clover - Perenjori 79GE10 Lime and molybdenum on wheat, sub clover …

South West Sub-Clover Root Rot - 1976 Cultivation Experiments, M. J. Barbetti

Experimental Summaries - Plant Research

South-west sub. clover root rot 1976 cultivation experiments - Karridale 75BU11, Walpole 75DE12, and Narrikup 75AL36. South-west sub. clover root rot 1978 lime trial - Narrikup 77AL5. Fungicidal control of rapeseed damping-off - Mt Barker Research Station, 78MT12. White rust (Albugo) of rapeseed 1978 - Mt Barker Research Station - 78MT13, Albany - 78AL6, Bridgetown - 78BR3.

Phosphorus Sources Trials, J W. Bowden, M Baker

Experimental Summaries - Plant Research

Pasture Trials 76BU1 New land pasture at Yallingupo Sand over laterite. 75N07B New land pasture at Chittering. Grave lo 76MT10 New land pasture at Mount Barker. Gravel. 77MT1 New land pasture at Mount Barkero Methods and particle size. Cropping Trials 76N4 New land - Phosphorus sources on barley - gravel sitee 76LG6 Short history - Phosphorus sources on barley - gravelly sande 76WH9 New land Phosphorus sources on wheat - loamy sands 77M016 - New land - Phosphorus sources on wheat - gravel ~ 3rd crop.

Declared Plant Control & Total Vegetation Control, P A. Rutherford

Experimental Summaries - Plant Research

(A) Declared plant control. 1. Arum lily (Zantedeschia aethiopica). Chemical control of Arum Lily (Zantedeschia aethiopica). Properties: Prevelly Park, Margaret River (A), Wonnerup (B). (A) dense Arum Lily under shade from trees in Park reserve. (B) scattered Lily in clover pasture grazed by dairy cattle. 2. Blackberry (Rubus spp). 79AI60 - Evaluation of Roundup for blackberry control. Property - R. Wolfe, Bornholm. Herbicides for blackberry control. Property – G. Wright, Kent River. 79AL62 - Evaluations of “Krenite” for blackberry control. Property R.G. Ebbott, Bow Bridge. 3. Pennyroyal (Mentha pulegium) 79AP64 - Herbicide screening on Pennyroyal (Mentha pulegium). D. Wells, Denmark. …

A. Inoculum Of The Take-All Fungus And Prediction Of Take-All. B. Hypovirulent Strains And Control Of Take-All., K Sivasithamparam

Experimental Summaries - Plant Research

CONTENTS A. Inoculum of the Take-all-Fungus and the Prediction of Take-all 1. Inoculum from grass and wheat residues. a. Trial at Reichstein's, Esperance. b. Trial at Wallace's, Esperance. 2. Inoculum size and take-all. a. Inoculum fraction of a Jerramungup soil. b. Interaction of inoculum size with soil temperature. 3. Effect of various fertilizer treatment on inoculum - 79LG25. 4. Time of sampling and inoculum. a. Newdegate. b. Kulin. c. Badgingarra. 5. Take-all and Hypovirulent strains a. Newdegate - 78LG30. b. Esperance - 79E14.

1979 Summary Of Experiments, T N. Khan

Experimental Summaries - Plant Research

79MT22 Mid season sown experiment, Mt Barker 79BA25 crop loss assessment trials, Badgingarra 79MT49 scoring system for leaf diseases, Mt Barker 79BA24 Inter-plot interference at various distances in Net Blotch, Badginarra Research Station 79WH17 Inter-plot interference at various distances in Net Blotch, Wongan Hills Research Station 79BA21 Inter-plot interference at various distances in Barley Scald, Badgingarra Research Station 79MT23 Inter-plot interference at various distances in Barley Scald, Mt Barker Research Station 79BA53 Scald nursery, Badgingarra 79BA54 Net Blotch nursery, Badgingarra 79WH52 Net Blotch nursery, Wongan Hills 79BA20 Crop loss assessment, Badgingarra Research Station 79BA22 Evaluating differences in field reaction of …