Life Sciences Commons^™

A Review Of The Factors Influencing The Growth Of The Northern Quahog, Mercenaria Mercenaria (Linnaeus, 1758), Michael A. Rice, Jan A. Pechenik

Michael A Rice

Factors affecting the growth of larval, juvenile, and adult northern quahogs, Mercenaria mercenaria, are reviewed. Larval growth is affected by temperature, salinity, current speed, dissolved oxygen concentration, and the amount of suspended sediments in the water, along with such nutritional factors as food quantity and quality. Growth of post-set juvenile and adult quahogs is similarly affected by the same physical and nutritional factors. Recent work suggests that there is a strong genetic contribution to quahog growth rate and that selective breeding programs may be useful for producing rapid growth strains. A growing body of evidence suggests that larval growth rates …

A Comprehensive Genetic Linkage Map Of The Human Genome, Nih/Ceph Collaborators Mapping Group, Helen Donis-Keller

Helen Donis-Keller

A genetic linkage map of the human genome was constructed that consists of 1416 loci, including 279 genes and expressed sequences. The loci are represented by 1676 polymorphic systems genotyped with the CEPH reference pedigree resource. A total of 339 microsatellite repeat markers assayed by PCR are contained within the map, and of the 351 markers with heterozygosities of at least 70%, 205 are microsatellites. Seven telomere loci define physical and genetic endpoints for 2q, 4p, 7q, 8p, 14q, 16p, and 16q, and in other cases distal markers on the maps have been localized to terminal cytogenetic bands. Therefore, at …

Thermodynamics Of Single-Standard Rna-Binding To Oligolysines Containing Tryptophan, David Mascotti, Timothy Lohman

David P. Mascotti

These studies provide important comparative information for the interpretation of the thermodynamics of protein-ss nucleic acid interaction.

The Cpce And Cpcf Genes Of Synechococcus Sp. Pcc 7002. Construction And Phenotypic Characterization Of Interposon Mutants, J Zhou, G E. Gasparich, V L. Stirewalt, R De Lorimier, D A. Bryant

Gail Gasparich

Proceedings Of The Second Rhode Island Shellfish Industry Conference, Michael Rice, Deborah Grossman-Garber

Michael A Rice

Various papers from presentations at the conference

Die Konsequenzen Eines Lebens Im Druckbehälter. Biotheoretische Implikationen Der Organisation Pflanzlicher Organismen [The Consequences Of Living In A Pressure Pot. Biotheoretical Implications Of The Organismic Architecture Of Plants], Winfried Peters, Hubert Felle

Winfried S. Peters

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Aerosolized Pseudomonas Elastase And Lung Fluid Balance In Anesthetized Sheep, B. T. Peterson, M. L. Collins, L. D. Gray, Ali Azghani

Ali Azghani

Trends In Overwintering Egg Populations Of A Pine Sawfly, Neodiprion Autumnalis, On Ponderosa Pine Sampled In January And December 1991 Near Ft. Meade In South Dakota, Judith E. Pasek, Willis C. Schaupp Jr

Judith E Pasek

In 1990 and 1991, a number of outbreaks of the pine sawfly, Neodiprion autumnalis, were reported in western South Dakota and eastern Wyoming. Near Ft. Meade in South Dakota, defoliation in 1990 was heavy at the center of the infestation and decreased to light defoliation at a distance of 1 mile from the center. Defoliation at the same location in 1991 appeared to range from heavy to moderate.

Three sites near Ft. Meade that were sampled in January 1991 were resurveyed in December 1991 to assess changes in overwintering egg populations and degree of defoliation and to determine the potential …

Canid Elicitation Of Blood-Squirting In A Horned Lizard (Phrynosoma Cornutum), George Middendorf, Wade Sherbrooke

George Middendorf

No abstract provided.

Populations Of Douglas-Fir Beetle In Green Trees Three Years After The Clover Mist Fire On The Clarks Fork Ranger District, Shoshone National Forest, Wyoming, Judith Pasek, Willis Schaupp

Judith E Pasek

Brood densities of Douglas-fir beetle (DFB), Dendroctonus pseudotsugae Hopkins, in green trees adjoining areas burned by the 1988 Clover Mist Fire varied by site, but averaged 8 per 36 sq. in. for bark samples at all sites examined during November 1991. Brood densities were much reduced from 1990 levels, but were similar to densities found in blackened trees in fall 1989. The reduction from 1990 levels was attributed to heavy winter mortality of brood caused by prolonged extreme cold temperatures. Most brood in fall 1991 samples was present in the callow adult stage, similar to 1989 samples, and in contrast …

Status And Trends Of Mountain Pine Beetle Populations In The Bear Mountain And White House Gulch Areas On The Harney Ranger District, Black Hills National Forest, South Dakota, Judith E. Pasek, Willis C. Schaupp Jr

Judith E Pasek

Increasing and epidemic populations of the mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Scolytidae) were detected and evaluated in the southcentral Black Hills. Mortality of ponderosa pine, Pinus ponderosa Dougl. ex Laws., in the area increased each year since 1988 and was six times greater in 1991 than in 1989. Survey results indicate an average of 29 trees killed per acre by this bark beetle from 1989 through 1991 in the Bearhouse project area. Infestation is especially concentrated in the Bear Mountain Basin area, where between 27 and 103 trees per acre have been killed, and a large beetle population …

Interaction Of Single And Double Stranded Nucleic Acids With Charged Oligopeptides Containing Tryptophan, David Mascotti, T. Lohman

David P. Mascotti

No abstract provided.

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Effects Of The Argentine Ant On Arthropod Fauna Of Hawaiian High-Elevation Shrubland, F Cole, Arthur Madeiros, Lloyd Loope, William Zuehlke

F. Russell Cole

Human-caused biological invasions by an alien species are a worldwide phenomenon. They are particularly significant on isolated oceanic islands and represent a serious threat to endemic biota. The Argentine ant (Iridomyrmex humilis) has become established in portions of the high-elevation shrubland of Haleakala National Park, Maui, Hawaii, over the past 25 yr. This ecosystem lacks native ants but possesses many locally endemic and rare anthropod species. Pitfall trapping and under-rock surveys were conducted to determine the effects of I. humilis on the local arthropod fauna. More than 180 taxa were sampled, mostly Arthropoda. Presence of the Argentine ant is associated …

Nonspecific Ligand-Dna Equilibrium Binding Parameters Determined By Fluorescence Methods., Timothy Lohman, David Mascotti

David P. Mascotti

To understand the structures and dynamics of DNA and its interactions with ligands, a complete analysis of its confirmational flexibility is required.

A Species Profile Of The Quahog In Rhode Island, Sheldon Pratt, Arthur Ganz, Michael Rice

Michael A Rice

A compilation of shellfish management studies undertaken in Rhode Island in support of a Rhode Island quahog fishery management plan.

The Northern Quahog: The Biology Of Mercenaria Mercenaria, Michael Rice

Michael A Rice

A general overview of the biology, fisheries and aquaculture of the northern quahog, Mercenaria mercenaria.

A Capacity Theory Of Comprehension: Individual Differences In Working Memory, Marcel Just, Patricia Carpenter

Marcel Adam Just

No abstract provided.

Interaction Of Single And Double-Stranded Nucleic-Acids With Charged Oligopeptides Containing Tryptophan., David Mascotti, Timothy Lohman

David P. Mascotti

No abstract provided.

Thermodynamics Of Ligand-Nucleic Acid Interactions, Timothy Lohman, David Mascotti

David P. Mascotti

To understand the structures and dynamics of DNA and its interactions with ligands, a complete analysis of its confirmational flexibility is required.

Auxin-Induced H+-Pump Stimulation Does Not Depend On The Presence Of Epidermal Cells In Corn Coleoptiles, Winfried Peters, Ursula Richter, Hubert Felle

Winfried S. Peters

Association Of Tetrapyrrole Intermediates In The Bacteriochlorophyll A Biosynthetic Pathway With The Major Outer-Membrane Porin Protein Of Rhodobacter Capsulatus, David W. Bollivar, Carl E. Bauer

David Bollivar

Rhodobacter capsulatus regulates synthesis of bacteriochlorophyll a in response to changes in oxygen partial pressure and light intensity. One early model proposed that this regulation involved a carrier polypeptide that functions to tether tetrapyrrole intermediates to the membrane. In the present study we isolated tetrapyrrole intermediates accumulated in three strains of R. capsulatus that contain mutations which block bacteriochlorophyll a biosynthesis at different steps of the magnesium branch of the pathway. Each of the tetrapyrrole intermediates was shown to be associated with the same 32 kDa polypeptide, as indicated by similar electrophoretic mobility and antigenic cross-reactivity with polyclonal antisera. The …

Bivalve Aquaculture In Warm Tropical And Subtropical Waters With Reference To Sanitary Water Quality, Monitoring And Post-Harvest Disinfection, Michael A. Rice

Michael A Rice

The warm water and high primary productivity of tropical estuaries allows for rapid growth and production of bivalves, but sanitary quality of molluscan shellfish poses one of the single largest impediments to development of international markets. The regulations of the US Food and Drug Administration (FDA) are outlined as representative of regulations governing international trade of fresh and frozen molluscan shellfish. The status of shellfisheries and molluscan aquaculture in several tropical and subtropical nations is presented. A number of developing nations, including Mexico, Peru and the Philippines, have established export markets for fresh scallop adductor meats because they are not …

Nucleotide Sequence Of S-Adenosyl-L-Methionine: Magnesium Protoporphyrin Methyltransferase From Rhodobacter Capsulatus, David W. Bollivar, Carl E. Bauer

David Bollivar

No abstract provided.

The Effects Of Copper, Cadmium And Zinc On Particle Filtration And Uptake Of Glycine In The Pacific Oyster Crassostrea Gigas, Wenyu Lin, Michael A. Rice, Paul K. Chien

Michael A Rice

1. The filtration rate (volume of water completely cleared of collodial carbon per unit time) by control oysters is 36.60 ml/g hr ± 7.68 (sd).2. Filtration rates decrease with increasing concentrations of Cd2+ and Zn2+.3. In 8–16 mg/l Cu2+, filtration rates are significantly higher than the control, but in Cu2+ concentrations above 32 mg/l, filtration rates are lower than controls.4. Influx of 14C-glycine is characterized by Michaelis-Menten kinetics with Jmax and Kt values of 1.85 ± 0.097 μmol/g hr and 33.7 ± 4.6 μM respectively.5. The uptake rate of glycine from 1 μM solution is 37.79 μmol/g hr.6. In order …

Rearing Systems For Screwworm Mass Production, David B. Taylor

David B. Taylor

No abstract provided.

Incorporating Pest Information Into Forest Planning: Personal Experience From The Black Hills, Judith E. Pasek

Judith E Pasek

Paper presented at the 40th Annual Western International Forest Disease Work Conference.