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Articles 1 - 29 of 29
Full-Text Articles in Life Sciences
Behavioral Responses Of Decapod Larvae To Light, Salinity And Chlorine, Jerome E. Illowsky
Behavioral Responses Of Decapod Larvae To Light, Salinity And Chlorine, Jerome E. Illowsky
Dissertations, Theses, and Masters Projects
No abstract provided.
Pelagic Amphipods (Amphipoda: Hyperiidea) Of The Continental Shelf In The Middle Atlantic Bight, Russell Allen Short
Pelagic Amphipods (Amphipoda: Hyperiidea) Of The Continental Shelf In The Middle Atlantic Bight, Russell Allen Short
Dissertations, Theses, and Masters Projects
No abstract provided.
Electron Microscopic Study Of Cell Division And Reproductive Differentiation In Male Branches Of Dasya Baillouviana (Gmelin) Montagne (Rhodophyta), Dawn Phillips Sigfred
Electron Microscopic Study Of Cell Division And Reproductive Differentiation In Male Branches Of Dasya Baillouviana (Gmelin) Montagne (Rhodophyta), Dawn Phillips Sigfred
Dissertations, Theses, and Masters Projects
No abstract provided.
The Osmotic Fragility Of Red Blood Cells Of Marine Animals: A Comparative Study, Robert Demanche
The Osmotic Fragility Of Red Blood Cells Of Marine Animals: A Comparative Study, Robert Demanche
Dissertations, Theses, and Masters Projects
No abstract provided.
The Life History Of The Cownose Ray, Rhinoptera Bonasus (Mitchill 1815), In Lower Chesapeake Bay, With Notes On The Management Of The Species, Joseph W. Smith
The Life History Of The Cownose Ray, Rhinoptera Bonasus (Mitchill 1815), In Lower Chesapeake Bay, With Notes On The Management Of The Species, Joseph W. Smith
Dissertations, Theses, and Masters Projects
No abstract provided.
Nest Site Selection And Foraging Behavior Of The Bald Eagle (Haliaeetus Leucocephalus) In Virginia, Norman Bernard Jaffee
Nest Site Selection And Foraging Behavior Of The Bald Eagle (Haliaeetus Leucocephalus) In Virginia, Norman Bernard Jaffee
Dissertations, Theses, and Masters Projects
No abstract provided.
Petroleum Degradation By Naturally Occurring Populations Of Marine Bacteria From Middle Atlantic Outer Continental Shelf Waters, Alexander Maccubbin
Petroleum Degradation By Naturally Occurring Populations Of Marine Bacteria From Middle Atlantic Outer Continental Shelf Waters, Alexander Maccubbin
Dissertations, Theses, and Masters Projects
Bacterial populations indigenous to surface (1 m) waters of the Middle Atlantic Outer Continental Shelf were sampled at seasonal intervals to determine the abundance and distribution of petroleum-degrading (HC) and "total" heterotrophic (HET) bacteria. Simultaneously, unweathered South Louisiana crude oil (SLCO) was added to aliquots of surface water samples to evaluate rates and patterns of degradation of hydrocarbon. Degradation was studied using selected nutrient and temperature regimes in both closed flask and prototype "open" or continuous dilution systems. HET bacterial levels generally decreased with distance from land (x inshore = 6 x 10('4) MPN/ml to x offshore = 6 x …
Anaerobic Metabolism Of The Ribbed Mussel, Geukensia Demissa, Ming-Shan Ho
Anaerobic Metabolism Of The Ribbed Mussel, Geukensia Demissa, Ming-Shan Ho
Dissertations, Theses, and Masters Projects
The anaerobic metabolism of the intertidal ribbed mussel, Geukensia demissa (= Modiolus demissus), is reported in this dissertation. This mollusc was selected because anaerobic metabolism is believed to be of vital significance to its survival during the air exposure period of the tidal cycle.;Ribbed mussels, Geukensia demissa, were maintained in either aerated or hypoxic water for up to four days. Major metabolites and polysaccharide of each mussel were then analyzed and compared. Succinate, propionate and alanine were found to accumulate hypoxically, but not malate, (alpha)-keto-glutarate and pyruvate. The polysaccharide content of each mussel was quite different and did not show …
Resource Use By Amphipoda (Crustacea: Peracarida) On The Outer Continental Shelf Of The Middle Atlantic Bight: Implications To Community Structure, Linda C. Schaffner
Resource Use By Amphipoda (Crustacea: Peracarida) On The Outer Continental Shelf Of The Middle Atlantic Bight: Implications To Community Structure, Linda C. Schaffner
Dissertations, Theses, and Masters Projects
Benthic communities on the outer continental shelf of the Middle Atlantic Bight are characterized by abundant populations of amphipods in the families Ampeliscidae and Corophiidae. Members of these families occupy tubes at or near the sediment surface and, thus, potentially compete with each other for spatial and trophic resources. This study examines the spatial, temporal and trophic resource use of six numerically dominant species in these families as a means of assessing the relative importance of competition as a structuring force in outer shelf benthic communities.
Analysis of abundance data and the use of discriminant analysis to relate abundance to …
An Analysis Of Parasite Communities Of The Atlantic Croaker, Micropogonias Undulatus (Linnaeus), Within The Chesapeake Bay, David A. Benner
An Analysis Of Parasite Communities Of The Atlantic Croaker, Micropogonias Undulatus (Linnaeus), Within The Chesapeake Bay, David A. Benner
Dissertations, Theses, and Masters Projects
No abstract provided.
Aspects Of Vertical Distribution And Ecology Of The Dominant Meso- And Bathypelagic Fishes From The Norfolk Canyon Region, John V. Gartner
Aspects Of Vertical Distribution And Ecology Of The Dominant Meso- And Bathypelagic Fishes From The Norfolk Canyon Region, John V. Gartner
Dissertations, Theses, and Masters Projects
No abstract provided.
Effects Of Ingestion Of Kepone Contaminated Food By Juvenile Blue Crabs (Callinectes Sapidus Rathbun), Daniel J. Fisher
Effects Of Ingestion Of Kepone Contaminated Food By Juvenile Blue Crabs (Callinectes Sapidus Rathbun), Daniel J. Fisher
Dissertations, Theses, and Masters Projects
No abstract provided.
Bioaccumulation And Effects Of Kepone On Spot, Leiostomus Xanthurus, Linda L. Stehlik
Bioaccumulation And Effects Of Kepone On Spot, Leiostomus Xanthurus, Linda L. Stehlik
Dissertations, Theses, and Masters Projects
No abstract provided.
Coral-Nutrient Relationships, Lawrence J. Pastor
Coral-Nutrient Relationships, Lawrence J. Pastor
Dissertations, Theses, and Masters Projects
No abstract provided.
Aspects Of 14co2 Uptake In Cyclostat Grown Chlorella Sp Population Exposed To Varying Lengths Of Photoperiods, Steven J. Hastings
Aspects Of 14co2 Uptake In Cyclostat Grown Chlorella Sp Population Exposed To Varying Lengths Of Photoperiods, Steven J. Hastings
Dissertations, Theses, and Masters Projects
No abstract provided.
Morphology And Development Of Hatchery Cultured American Shad (Alosa Sapidissima Wilson), With A Comparison Between Field Sampled And Cultured, James Roy Johnson
Morphology And Development Of Hatchery Cultured American Shad (Alosa Sapidissima Wilson), With A Comparison Between Field Sampled And Cultured, James Roy Johnson
Dissertations, Theses, and Masters Projects
No abstract provided.
The Roles Of The Pituitary-Adrenal Axis In The Reproductive Physiology Of Male Prairie Deermice (Peromyscus Maniculatus Bairdi), John Charles Coppes
The Roles Of The Pituitary-Adrenal Axis In The Reproductive Physiology Of Male Prairie Deermice (Peromyscus Maniculatus Bairdi), John Charles Coppes
Dissertations, Theses, and Masters Projects
No abstract provided.
Morphological, Histological, And Physiological Aspects Of Assimilation In Larval Spot, Leiostomus Xanthurus Lacepede, John Jeffrey Govoni
Morphological, Histological, And Physiological Aspects Of Assimilation In Larval Spot, Leiostomus Xanthurus Lacepede, John Jeffrey Govoni
Dissertations, Theses, and Masters Projects
In view of questions concerning the digestive and assimilative abilities of larval marine fishes, the changes in these processes with development, and their relationship with starvation-induced mortality; this study has three objectives: (1) to examine the morphological and histological development of the alimentary canal and associated structures of larval spot, Leiostomus xanthurus (Pisces: Sciaenidae); (2) to assess short-term carbon assimilation in discrete age cohorts of larval spot; and (3) to relate any changes in assimilation to development. The alimentary canal and associated structures of larval spot from hatching through transformation (metamorphosis) were examined using light microscopy. These findings were related …
The Effects Of Chlorinated Sea Water On The Blue Crab, Callinectes Sapidus, Chae E. Laird
The Effects Of Chlorinated Sea Water On The Blue Crab, Callinectes Sapidus, Chae E. Laird
Dissertations, Theses, and Masters Projects
The effects of chlorinated sea water on the blue crab, Callinectes sapidus Rathbun, were evaluated through measurements of acute toxicity, serum constituents (protein, total ninhydrin positive substances, chloride, osmotic, sodium, potassium, calcium, and magnesium concentrations), oxygen consumption and ventilation rates in whole crabs, and oxygen consumption of excised gills. Histological examination of gills was also performed. The 96-hr LC50 for female blue crabs exposed to chlorinated sea water at 21�C and 14('0)/00 was 0.86 mgCl(,2)/l CIO (chlorine induced oxidants). The value for males under similar conditions was 0.84 mgCl(,2)/l CIO. Mortality was uncommon below 0.61 mgCl(,2)/l, but reached 100% with …
Aggressive Interactions, Shelter Competition, And Mating Interference As Potential Mechanisms Relating To Species Displacement Among Crayfish Of The Genus Orconectes, Barbara Mansfield Munjal
Aggressive Interactions, Shelter Competition, And Mating Interference As Potential Mechanisms Relating To Species Displacement Among Crayfish Of The Genus Orconectes, Barbara Mansfield Munjal
Dissertations, Theses, and Masters Projects
No abstract provided.
Vegetative Mitosis In The Multinucleate Green Alga, Cladophora Flexuosa: An Ultrastructural Study, Ruth Schwab Lewis
Vegetative Mitosis In The Multinucleate Green Alga, Cladophora Flexuosa: An Ultrastructural Study, Ruth Schwab Lewis
Dissertations, Theses, and Masters Projects
No abstract provided.
Age Determination And Growth Of The Blueback Herring, Alosa Aestivalis, Jack Gerald Travelstead
Age Determination And Growth Of The Blueback Herring, Alosa Aestivalis, Jack Gerald Travelstead
Dissertations, Theses, and Masters Projects
No abstract provided.
Uptake, Distribution, Metabolism And Clearance Of Kepone By Channel Catfish (Ictalurus Punctatus), Peter A. Vanveld
Uptake, Distribution, Metabolism And Clearance Of Kepone By Channel Catfish (Ictalurus Punctatus), Peter A. Vanveld
Dissertations, Theses, and Masters Projects
No abstract provided.
Food Habits, Prey Selectivity And Food Resource Partitioning Of A Community Of Fishes On The Outer Continental Shelf, George R. Sedberry Iii
Food Habits, Prey Selectivity And Food Resource Partitioning Of A Community Of Fishes On The Outer Continental Shelf, George R. Sedberry Iii
Dissertations, Theses, and Masters Projects
The demersal fish community of the outer continental shelf in the Middle Atlantic Bight consists of resident species, seasonal species with boreal affinities, and seasonal species with warm temperature affinities. Dominant demersal fishes of the outer continental shelf feed primarily on macrobenthic invertebrates, which persist in dense, stable communities. Some dominant predators also feed heavily on fishes, cephalopods, and planktonic invertebrates, at least seasonally. Food habits of the fishes change seasonally, especially at the species level. Food habits of fishes also change considerably with size, with most predators showing distinct feeding stanzas separated by a marked change in feeding strategy. …
Azalea Tissue Culture, Albert G. Curry
Azalea Tissue Culture, Albert G. Curry
Dissertations, Theses, and Masters Projects
No abstract provided.
Seasonal Changes In The Growth And Structure Of The Diatom Asterionella Formosa Hassall In Lake Matoaka, Virginia, Kathy Joyce Lundgren
Seasonal Changes In The Growth And Structure Of The Diatom Asterionella Formosa Hassall In Lake Matoaka, Virginia, Kathy Joyce Lundgren
Dissertations, Theses, and Masters Projects
No abstract provided.
Oxygen Uptake And Transport In The Sabellid Polychete Eudistylia Vancouveri (Kinburg), Gregory Melhem Vogel
Oxygen Uptake And Transport In The Sabellid Polychete Eudistylia Vancouveri (Kinburg), Gregory Melhem Vogel
Dissertations, Theses, and Masters Projects
No abstract provided.
Vascular Flora Of Mathews County, Virginia, Margaret Norman Van Montfrans
Vascular Flora Of Mathews County, Virginia, Margaret Norman Van Montfrans
Dissertations, Theses, and Masters Projects
No abstract provided.
Reproductive Biology Of The Egg Parasite Gryon Parkeri (Fouts) (Hymenoptera: Scelionidae), Richard Lee Lampman
Reproductive Biology Of The Egg Parasite Gryon Parkeri (Fouts) (Hymenoptera: Scelionidae), Richard Lee Lampman
Dissertations, Theses, and Masters Projects
No abstract provided.