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Figure 1.
Figure 2.
Figure 3.

Species Name: Ardissonea fulgens (Greville) Grunow
Common Name: None
Synonymy: None
  1. TAXONOMY

    Kingdom Phylum/Division Class: Order: Family: Genus:
    Protista Bacillariophyta Bacillariophyceae - - Ardissonea

    Species Description

    Valves are mostly linear, with a variable amount of median inflation and bluntly rounded apices (Fig. 1, line drawing, modified from Hustedt 1930-66). The structure that appears to be a sternum in some valves is rather, a discontinuity in the transverse striae, as illustrated in Hendey 1964 (Pl. XLII: 3). In the light microscope, longitudinal “lines” are often present near the valve margin (Fig. 2, brightfield). The areolae are simple uniseriate pores separated by internally thickened costae (Fig. 3, SEM internal view); the transverse costae number about 14-19 in 10µm. At the valve apex the areolae become radial; a porefield and rimoportula are lacking. Literature records give a size range of 170-450µm, a width of about 8.5-15µm, and up to 20µm at the median inflation. Chloroplasts are small, numerous, and discoid. The species usually grows in fan-shaped colonies, epiphytic on seaweeds and seagrasses.

    Many references refer to this species as Synedra fulgens (Greville) W. Smith, despite the significant differences from Synedra, sensu stricto (Poulin et al. 1986; Round et al. 1990).

  2. HABITAT AND DISTRIBUTION

    No information is available at this time

  3. LIFE HISTORY AND POPULATION BIOLOGY

    No information is available at this time

  4. PHYSICAL TOLERANCES

    No information is available at this time

  5. COMMUNITY ECOLOGY

    No information is available at this time

  6. ADDITIONAL INFORMATION

    No information is available at this time

  7. REFERENCES

    Hendey NI. 1964. An Introductory Account of the Smaller Algae of British Coastal Waters. Part V. Bacillariophyceae. Ministry of Agriculture, Fisheries and Food. Fisheries Investigations, Series IV. London, IMSO. 317pp.

    Hustedt F. 1930-1966. Die Kieselalgen Deutschlands, Österreich und der Schweiz. In: Dr. L. Rabenhorst’s Kryptogamen-Flora von Deutschlands, Österreich und der Schweiz 7(1): 1-920, 7(2): 1-845, 7(3): 1-816. J Cramer Verlag, Weinheim.

    Poulin M, Berard-Therriault ML, Cardinal A. 1986. Fragilaria and Synedra (Bacillariophyceae): a morphological and ultrastructural approach. Diat Res 1: 99-112.

    Round FE, Crawford RM, Mann DG. 1990. The Diatoms, Biology & Morphology of the Genera. Cambridge University Press, Cambridge. 747pp.

Unless otherwise noted, all images and text by PE Hargraves
Editing and page maintenance by LH Sweat
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Page last updated: 27 August 2015

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