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Circadian Systems In Development And Photoperiodism In Japanese Quail., Albert C. Russo Jr
Circadian Systems In Development And Photoperiodism In Japanese Quail., Albert C. Russo Jr
LSU Historical Dissertations and Theses
Section I: The daily rhythm of plasma levels of adrenal corticol hormones (ACH) differed in phase and amplitude in Japanese quail of different ages and reproductive condition. Treatment with thiouracil accelerated and thyroxine delayed maturation of the ACH rhythm and development of the reproductive system. In contrast to the ACH rhythm, the rhythm of plasma thyroxine concentrations was similar at all ages tested. Section II: The roles of circadian rhythms in photoperiodism as they relate to adrenal cortical hormone (ACH) were examined in male Japanese quail, Coturnix coturnix japonica. Plasma ACH concentration was found to undergo circadian variations, which varied …
An Analysis Of The Trematode Fauna Of Two Intercontinental Migrants: Tringa Solitaria And Calidris Melanotos (Aves: Charadriiformes) (Ecuador, Louisiana, South Dakota, Canada)., Erika Jansic Tallman
An Analysis Of The Trematode Fauna Of Two Intercontinental Migrants: Tringa Solitaria And Calidris Melanotos (Aves: Charadriiformes) (Ecuador, Louisiana, South Dakota, Canada)., Erika Jansic Tallman
LSU Historical Dissertations and Theses
One hundred ninety-seven Solitary Sandpipers, Tringa solitaria, and 213 Pectoral Sandpipers, Calidris melanotos, were examined for trematodes. Specimens were taken from the hosts' winter range in Ecuador, South America, during the fall and spring migrations from Louisiana and South Dakota in the United States, and from the breeding grounds of the Solitary Sandpiper in Ontario, Canada. The 13 species of trematodes recorded from the shorebirds included 5 that were common to both species of shorebirds: Tanaisia fedtschnkoi, Cyclocoelum obscurum, Paramonostomum sp., Leucochloridium variae, and Zonorchis microrochis. Of the remaining 8 species, Cyclocoelum brasilianum, Plagiorchis maculosus, Stephanoprora denticulata, and Eurytrema lubens …