Zugl: @Göteborg, Univ., Diss., 2007. / Enth. 5 Einzelbeitr.

Diss. (sammanfattning) Göteborg : Univ. , 2007. / Härtill 5 uppsatser. Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin--Madison, 1981. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 40-43).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. Includes bibliographies.

Thesis (M.S.)--University of Wisconsin--Madison, 1984. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--University of Puerto Rico, Mayaguez Campus, 2006. / Includes bibliographical references.

No description available.

The nature of the bioluminescence of Gonyaulax catenella is similar to that observed for other dinoflagellates in culture, showing photoperiod-entrained rhythms of luminescence and stimulability with relatively constant luminescent capacity during scotophase. G. catenella is very sensitive to stimulation and photoinbibition. The nature of the response to stimulation by bubbling appears similar to that of G. polyedra, and comparisons of the total stimulable light with G. polyedra indicate that G. catenella emits approximately 6 x 10⁷ photons per cell, during exhaustive scotoptic stimulation. Over a range of cell concentrations, the rates of cell removal and filtration for Calanus pacificus when grazed on G. catenella were considerably lower when the dinoflagellates were in a relatively non-luminescent phase as opposed to a highly sensitive and luminescent phase. These differences could not be attributed to differences in particle size, culture age, distribution of dinoflagellates, ambient light intensity, rhythms in copepod feeding activity, or other factors reported to affect copepod grazing. Possible mechanisms of the effect are discussed. It is proposed that bioluminescence in dinoflagellates serves as a protean display type of defense mechanism against copepod grazing, has selective value, and is of adaptive and ecological significance. / Graduation date: 1970

Dinoflagellates are a diverse group of protists, some of which are photosynthetic. The typical dinoflagellate chloroplast contains two proteins not found in any other photosynthetic eukaryote: peridinin-chlorophyll a-protein (PCP) and Form II ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco). / Immunoelectron microscopic observations on the dinoflagellate Amphidinium carterae show that PCP is localized in the chloroplast stroma, not in the thylakoid lumen as previously postulated due to the presence of a putative lumen-targeting sequence. / Antisera against Form II Rubisco from bacterial (Rhodospirillum rubrum) and dinoflagellate (Symbiodinium sp.) sources were both shown to label the chloroplast and pyrenoid of A. carterae . Antiserum to Form I Rubisco from the haptophyte, alga Isochrysis galbana resulted in no labelling. Parallel experiments on the dinoflagellate Peridinium foliaceum, whose chloroplasts are all attributed to its diatom endosyrnbiont and on the diatom Phaeodactylum tricornutum revealed plastid pyrenoid labelling only with antiserum to Form I Rubisco.

Thesis (Ph. D.)--University of California, Santa Barbara, 1998. / Vita. Includes bibliographical references.