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Articles 1 - 17 of 17

Full-Text Articles in Life Sciences

A Description And Analysis Of Male-Male Interaction Behavior In The Lizard, Anolis Lividus, Philip H. Stevenson Jan 1982

A Description And Analysis Of Male-Male Interaction Behavior In The Lizard, Anolis Lividus, Philip H. Stevenson

Dissertations, Theses, and Masters Projects

No abstract provided.


The Influence Of Inorganic Ions On The Oxygen Binding Of Hemocyanin In The Blue Crab, Callinectes Sapidus Rathbun, Richard Patrick Mason Jan 1982

The Influence Of Inorganic Ions On The Oxygen Binding Of Hemocyanin In The Blue Crab, Callinectes Sapidus Rathbun, Richard Patrick Mason

Dissertations, Theses, and Masters Projects

No abstract provided.


Zooplankton Communities In Chesapeake Bay Seagrass Systems, Cathy Elizabeth Meyer Jan 1982

Zooplankton Communities In Chesapeake Bay Seagrass Systems, Cathy Elizabeth Meyer

Dissertations, Theses, and Masters Projects

No abstract provided.


Effects Of Disruptive Grazing By The Mud Snail Ilyanassa Obsoleta On Mudflat Nematode Populations, David Ludwig Jan 1982

Effects Of Disruptive Grazing By The Mud Snail Ilyanassa Obsoleta On Mudflat Nematode Populations, David Ludwig

Dissertations, Theses, and Masters Projects

Population densities of the mud snail Ilyanassa obsoleta were manipulated in caging experiments on a salt marsh mudflat and in laboratory microcosms. Mud snails outcompete nematodes for food resources, but may increase resources available to deposit feeding groups. Mud snails reduce annelid (polychaete and oligochaete) populations by substrate disruption. Reduced annelid densities provide the nematode community with some release from predation and competition. In mudflat sediments, the nematode community responds to both primary (predation) and secondary (envirorm1ental release, food competition) interactions. Multiple levels of interactive coupling should be considered in any systems level investigation in this habitat.


The Distribution And Ecology Of Gammaridean Amphipods In The Plankton Of The Middle Atlantic Bight, Cathy J. Womack Jan 1982

The Distribution And Ecology Of Gammaridean Amphipods In The Plankton Of The Middle Atlantic Bight, Cathy J. Womack

Dissertations, Theses, and Masters Projects

No abstract provided.


Reproductive Success Of The Common Tern (Sterna Hirundo) And Black Skimmer (Rynchops Niger) In Different Habitats In Virginia, Daniel Carey Smith Jan 1982

Reproductive Success Of The Common Tern (Sterna Hirundo) And Black Skimmer (Rynchops Niger) In Different Habitats In Virginia, Daniel Carey Smith

Dissertations, Theses, and Masters Projects

No abstract provided.


The Development Of Behavior In Nestling Ospreys, Kevin Scott Roberts Jan 1982

The Development Of Behavior In Nestling Ospreys, Kevin Scott Roberts

Dissertations, Theses, and Masters Projects

No abstract provided.


The Migration Of Embryonic Chick Heart Fibroblasts And Myocytes Through Solid Tissue Masses, Mary Anne Tucci Jan 1982

The Migration Of Embryonic Chick Heart Fibroblasts And Myocytes Through Solid Tissue Masses, Mary Anne Tucci

Dissertations, Theses, and Masters Projects

No abstract provided.


The Influence Of Environmental Conditions On The Breeding Behavior Of The Bald Eagle (Haliaeetus Leucocephalus) In Virginia, David O. Wallin Jan 1982

The Influence Of Environmental Conditions On The Breeding Behavior Of The Bald Eagle (Haliaeetus Leucocephalus) In Virginia, David O. Wallin

Dissertations, Theses, and Masters Projects

No abstract provided.


Adenine Nucleotide Levels And Adenylate Energy Charge In Zostera Marina (Eelgrass): Determination And Application, Damon A. Delistraty Jan 1982

Adenine Nucleotide Levels And Adenylate Energy Charge In Zostera Marina (Eelgrass): Determination And Application, Damon A. Delistraty

Dissertations, Theses, and Masters Projects

An analytical technique was developed to measure adenine nucleotide levels (ATP, ADP, AMP) and adenylate energy charge (EC) in Zostera marina (eelgrass), a submerged marine angiosperm. A tissue comparison and seasonal survey provide baseline information on natural adenylate variability. The methodology developed can be suitably adapted to other macrophyte species as well. Plants were frozen, lyophilized, scraped free of epiphytes, and homogenized. Adenylates were extracted with boiling 1 mM EDTA + 5% (w/v) PVPP (pH 7.6), and assayed by enzymic conversion of AMP and ADP to ATP, followed by quantitative analysis of ATP via the firefly bioluminescent reaction. ATP, ADP, …


Waterfowl Utilization Of A Submerged Vegetation (Zostera Marina And Ruppia Maritima) Bed In The Lower Chesapeake Bay, Elizabeth W. Wilkins Jan 1982

Waterfowl Utilization Of A Submerged Vegetation (Zostera Marina And Ruppia Maritima) Bed In The Lower Chesapeake Bay, Elizabeth W. Wilkins

Dissertations, Theses, and Masters Projects

No abstract provided.


Utilization Of A Zostera Marina And Ruppia Maritima Habitat By Four Decapods With Emphasis On Callinectes Sapidus, Deborah L. Penry Jan 1982

Utilization Of A Zostera Marina And Ruppia Maritima Habitat By Four Decapods With Emphasis On Callinectes Sapidus, Deborah L. Penry

Dissertations, Theses, and Masters Projects

No abstract provided.


Comparative Ecology Of Two Sympatric Species Of Atherinids, Menidia Menidia And Membras Martinica, William Howard Burton Jan 1982

Comparative Ecology Of Two Sympatric Species Of Atherinids, Menidia Menidia And Membras Martinica, William Howard Burton

Dissertations, Theses, and Masters Projects

No abstract provided.


Life History And Management Of Spiny Dogfish, Squalus Acanthias, Off The Northeastern United States, Marta Nammack Jan 1982

Life History And Management Of Spiny Dogfish, Squalus Acanthias, Off The Northeastern United States, Marta Nammack

Dissertations, Theses, and Masters Projects

No abstract provided.


An Activity Budget Analysis And Habitat Partitioning In The Eastern Fence Lizard, Sceloporus Undulatus, Mary Angela Ross Jan 1982

An Activity Budget Analysis And Habitat Partitioning In The Eastern Fence Lizard, Sceloporus Undulatus, Mary Angela Ross

Dissertations, Theses, and Masters Projects

No abstract provided.


The Effect Of Plant Density On Departure Decisions: A Test Of The Marginal Value Theorem, Donald A. Cibula Jan 1982

The Effect Of Plant Density On Departure Decisions: A Test Of The Marginal Value Theorem, Donald A. Cibula

Dissertations, Theses, and Masters Projects

No abstract provided.


A Study Of Nutritional Requirements Of The Larvae Of The American Oyster (Crassostrea Virginica), Fu-Lin E. Chu Jan 1982

A Study Of Nutritional Requirements Of The Larvae Of The American Oyster (Crassostrea Virginica), Fu-Lin E. Chu

Dissertations, Theses, and Masters Projects

The purpose of this study is to obtain information for the formulation of artificial diets for larvae of the American oyster (Crassostrea virginica) and to test procedures related to presenting these diets to the oyster larvae. In order to determine the nutrient components usually provided in larval diets, biochemical analyses of lipids and fatty acids, proteins and amino acids and polysaccharide carbohydrates were performed on five algae species used as a food source for oyster larvae. These algae are Chlorella sp., Pyramimonas virginica, Pseudoisochrysis paradoxa, Pavlova (Monochrysis) lutheri and Isochrysis galbana. The biochemical analyses indicate that the nutritional value of …