RM2CGYHBC–. Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ . f his extensive West Indian investigations, discriminatesbetween four sub-families of the Valoniacese. Subfamily VALONIE.E. In this, the most primitive division of theValoniacea, the thallus consists at first, and in Valonia ventricosa always, ofa single large sac-like coenocyte which typically becomes branched. Septasoon appear, cutting off small lenticular, multinucleate, peripheral portions ofthe protoplasm (fig. 162 a, a). In Valonia thes
RFDFFC7K–Valonia ventricosa, also known as 'bubble algae' and 'sailors' eyeballs.
RMMN3P87–Ornate wrasse (Thalassoma pavo) with blue surface in the background at Es Vedrá islet (Ibiza,Balearic Islands, Spain)
RF2R9NA3P–Unicellular organisms Bubble algae, Sea grape, Sailor's eyeballs (Valonia ventricos) on hand corals, Red sea, Safaga, Egypt
RM2CDF61E–. Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ . f his extensive West Indian investigations, discriminatesbetween four sub-families of the Valoniaceae. Sub-family VALONIE.E. In this, the most primitive division of theValoniacese, the thallus consists at first, and in Valonia ventricosa always, ofa single large sac-like coenocyte which typically becomes branched. Septasoon appear, cutting off small lenticular, multinucleate, peripheral portions ofthe protoplasm (fig. 162 a, a). In Valonia th
RMRHKW3C–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ION TRANSPORT IN VALONIA 341 potential (Walker, 1955; Kishimoto, 1959; Nagai and Kishimoto, 1964; Findlay and Hope, 1964; Spanswick and Williams, 1964). At the plasmalemma, both the large negative potential and the active extrusion of Na+ are features common to many cells. Two other marine algae, Halicystis and Porphyra, show cytoplasmic potentials of —SO and -42 mv, respectively (Blount and Levedahl, 1960; R. W. Eppley, personal communication). In fresh-water algae and higher plants the plasmalemma potentials are usually so
RMRDXNRM–. An introduction to the study of seaweeds. Algae. 164 SEAWEEDS and Anadyomenc, not in special zoosporangia but in any of the ordinary thallus cells. The zoospores are bi-ciliated, with a hyaline anterior end and a red spot. Nothing is known of their further history. In Valonia ventricosa (Fig. 46) there arise by free cell-formation a large number of spores with cell-. FiG. 49,—Boodlea coacta. magnified. u, tlialliis filaments; b, two baptera highly membranes. They do not all arise simultaneously, since in some specimens comparatively few spores are to be found, while a considerable amount of
RMRJWXTF–. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 57. 200 400 600 800 D/STAA/Cf , m 1000 P-/; t-2. 7p-3;Q -4; T-5; m-6 ; +-7 ; qo - 5 Figure 24. Vertical distribution of dominant species, biomass and percent cover of algae and seagrasses at St. Joseph Atoll. 1 - Thalassodendron ciliatum, 2 - Thalassia hemprichii, 3 - Boodlea struveoides, 4 - Cladophoropsis sundanensis, 5 • Laurencia species, 6 - Valonia fastigiata 7 - Dictyosphaeria species, 8 - Halimeda species.. Please note that these images are extracted from scanned page images that may have been digitall
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