- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 1 to 10 of 281 (0.019 seconds)| 1 |
Studien über Schwankungen des osmotischen Druckes der Körperflüssigkeit bei Daphnia magna (mit besonderer Berücksichtigung der Anpassungserscheinungen) /Fritzsche, Hans, January 1915 (has links)
Thesis (doctoral)--Universität Leipzig, 1915. / Cover title. "Sonder-Abdruck aus: 'Internationale Revue des gesamten Hydrobiologie und Hydrographie'."
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Die Relevanz von Fettsäuren in der Ernährung von DaphnienWeiler, Winfried. January 2001 (has links) (PDF)
Berlin, Humboldt-Univ., Diss., 2001. / Computerdatei im Fernzugriff.
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Die Relevanz von Fettsäuren in der Ernährung von DaphnienWeiler, Winfried. January 2001 (has links) (PDF)
Berlin, Humboldt-Univ., Diss., 2001. / Computerdatei im Fernzugriff.
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Die Relevanz von Fettsäuren in der Ernährung von DaphnienWeiler, Winfried. January 2001 (has links) (PDF)
Berlin, Humboldt-Universiẗat, Diss., 2001.
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Phenotypic plasticity and predation risk in two Daphnia speciesHavel, John Edward. January 1984 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographies.
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Studies on the genus Daphnia O.F. Müller with especial reference to the mode of reproductionBerg, Kaj. January 1931 (has links)
Thesis--Copenhagen. / Translated by E. Hjorth Degenkolv. Bibliography: p. 203-211.
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Life history characteristics of Daphnia lumholtzi and its susceptibility to an invertebrate predator /Rawski, Eden L., January 1997 (has links) (PDF)
Thesis (M.S.)--Eastern Illinois University, 1997. / Includes bibliographical references (leaves 55-60).
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A study of some ecological relationships and the role of vision in the diel migrations of DaphniaMcNaught, Donald C. January 1965 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1965. / Typescript. Vita. Includes bibliographical references.
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Culture of the freshwater cladoceran, Daphnia Pulex F. utilizing Scenedesmus obliquus grown in dairy waste mediumCastillo, Nelson M. January 1981 (has links)
Scenedesmus obliquus was grown in batch cultures at varying concentrations of digested dairy medium ranging from 200 to 2,000 ug-at N ⁻¹. Higher growth rates were observed at low N-concentrations while higher cell yields were observed at high N-concentrations. Aeration enhanced both algal growth rates and biomass yields. Results show an advantage in adjusting the nitrogen to phosphorus atomic ratio of the medium. More biomass was produced in cultures with higher N:P ratios.
The algal biomass produced was used as food for the
freshwater cladoceran, Daphnia pulex F. Three feeding levels were used: 50,000, 100,000 and 150,000 cells-ml⁻¹ . However, no significant differences were observed in both Daphnia biomass yields and biomass conversion efficiencies. The tendency of Scenedesmus cells to settle down in the bottom and cling to the sides of the tank presented a major problem in the study. Intensive feeding did not increase the biomass production of Daphnia, although larger-sized adults with larger brood sizes were produced. Animals in culture reached a density of 1.24 animals-ml⁻¹Aand obtained conversion efficiencies as high as 40-50%. / Land and Food Systems, Faculty of / Graduate
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Genetics of seasonal changes in adult size in Daphnia(Cladocera : Daphnidae) /Phipps, Terry Lee January 1987 (has links)
No description available.
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