. The Biological bulletin. Biology; Zoology; Marine biology. 412 PER HALLDAL This paper presents light-intensity/response analyses, and action spectra deter- minations of the symbiotic dinoflagellate and the endozoic Siphonales. Materials and Methods The coral Favia pallida Dana. This coral was the source of algal material for experiments presented in this paper. In several cases checks were made on samples taken from similarly shaped corals. As examples were selected Astreo- pora ocellata Bernard, Goniastrea mantonae Crossland, Platygyra rustica Dana, Pontes lutea Milne Edwards and Haime. In
. The Biological bulletin. Biology; Zoology; Marine biology. 412 PER HALLDAL This paper presents light-intensity/response analyses, and action spectra deter- minations of the symbiotic dinoflagellate and the endozoic Siphonales. Materials and Methods The coral Favia pallida Dana. This coral was the source of algal material for experiments presented in this paper. In several cases checks were made on samples taken from similarly shaped corals. As examples were selected Astreo- pora ocellata Bernard, Goniastrea mantonae Crossland, Platygyra rustica Dana, Pontes lutea Milne Edwards and Haime. In no cases could be demonstrated de- viations from photosynthetic measurements obtained with algae collected from Favia. E c. 2 cm Fig. 1. Schematic drawing of light conditions within the massive coral Favia according to measurements of Shibata and Haxo (unpublished data). A. The living part of the coral with the zooxanthellae. B. The Ostreobium layer. The dinoflagellate cf. Symhiodinium microadriaticum (Zooxanthellae). This alga can be isolated from corals and clams in different ways. Muscatine (1967) developed a method related to the one used in preparing chloroplasts and chloro- plast fragments for Hill reaction studies. Provasoli (personal communication) successfully isolated the algae with a brush. Both these methods, or adaptations of them, were employed in the present investigation. However, both for action spectra analyses and for intensity/response determinations only a tiny sample was needed, enough to cover the about mm.^ surface of the oxygen sensor cathode used. As a rule samples were therefore directly removed from the coral by a needle or a pair of forceps, and immediately placed upon the oxygen sensor cathode (see below and Fig. 2). The Siphonales Ostreobium. For the studies of the green layer alga of Favia a coral specimen was cut in dim light. A small sample of the green-colored lime. Please note that these images are extracted from scanned page images that
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectb, booksubjectzoology
