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Full-Text Articles in Life Sciences
Adaptation Of Striped Bass To Sea Water Following Direct Transfer From Freshwater: Morphological, Biochemical, And Physiological Parameters, Judy A. King
Electronic Theses and Dissertations
There has been heightened interest in the biology of striped bass (Morone saxatilis) because of increased pollution in their native spawning grounds and because of their extensive use in landlocked sport fisheries. Their euryhalinity makes them an excellent species for osmoregulation studies. The objective of this research was to study the rate of adaptation of striped bass gills to sea water (3% salt) after direct transfer from freshwater using biochemical (ion transport enzyme levels), physiological (chloride efflux), and ultrastructural methods. Striped bass have specialized osmoregulatory cells located on the interlamellar and afferent surfaces of their gill filaments as shown by …
Reproductive Success Of The Mute Swan (Cygnus Olor) In North Central County Clare, Ireland, Catherine Anne Mcdonough
Reproductive Success Of The Mute Swan (Cygnus Olor) In North Central County Clare, Ireland, Catherine Anne Mcdonough
Dissertations, Theses, and Masters Projects
No abstract provided.
The Use Of Brewers Condensed Solubles In Bivalve Mariculture, David S. Gussman
The Use Of Brewers Condensed Solubles In Bivalve Mariculture, David S. Gussman
Dissertations, Theses, and Masters Projects
Brewers Condensed Solubles (BCS), a by-product of the brewing industry, was evaluated as a nutrient source for rearing juvenile oysters (Crassostrea virginica) and clams (Mercenaria mercenaria). The BCS was used to culture bacteria which were fed to colorless flagellates which were in turn fed to the oysters and clams. The overall growth efficiency of oysters on BCS was 473 mg of oyster (whole weight) per g of BCS (dry weight). Fourteen isolates representing nine genera of bacteria were isolated from BCS enrichment cultures. Specific growth rates of the isolates at &24\sp\circ{lcub}\rm C{rcub}& on a BCS medium ranged from 0.48 &{lcub}\rm …
Life History Of The Goosefish, Lophius Americanus, Michael P. Armstrong
Life History Of The Goosefish, Lophius Americanus, Michael P. Armstrong
Dissertations, Theses, and Masters Projects
No abstract provided.
The Effects Of Mortality And Time Constraints On Productivity In Yellow-Crowned Night Herons (Nycticorax Violacea), Bryan David Watts
The Effects Of Mortality And Time Constraints On Productivity In Yellow-Crowned Night Herons (Nycticorax Violacea), Bryan David Watts
Dissertations, Theses, and Masters Projects
No abstract provided.
The Effects Of Xanthine And Adenosine Analogs On Rat Pup Diaphragmatic Contractility, Liam C. Farrell
The Effects Of Xanthine And Adenosine Analogs On Rat Pup Diaphragmatic Contractility, Liam C. Farrell
Masters Theses
Methylxanthines are commonly used in the treatment of respiratory disorders such as asthma, apnea of prematurity and Cheyne-Stokes respiration. Recently, certain methylxanthines have been found to potentiate the contraction of the diaphragm and increase contraction strength of the fatigued diaphragm. The mechanism of action of the methylxanthines is unknown. Three theories have been proposed but each has its supportive and negative points. One theory is that methylxanthines inhibit cyclic AMP phosphodiesterase (PDE) which facilitates contraction by increasing cyclic AMP levels in the cell. Another theory is that methylxanthines antagonize adenosine, thus blocking the adenosine-induced inhibition of contraction. The third theory …