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Figure 1


Figure 2


Figure 3.


Species Name: Neosynedra tortosa Grunow Williams & Round
Common Name: None
Synonymy: None
  1. TAXONOMY

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

    Species Description

    Valves of this species are elongate, slightly expanded in the center, and slightly capitate at the apices. The septum is central, and visible in the light microscope as a thin line (Fig. 1). Length of the valves, from literature records, is 60-95µm, width about 3-5µm. The areolae comprise of 32-35 evenly spaced uniseriate rows in 10µm (Fig. 2). Both apices have a series of elongate pores separated by elongate bars, with a rimoportula adjacent to the apical pore field (Fig. 3, arrow). The girdle is composed of at least four bands (Williams & Round 1986). Cells are reported to form colonies of zig-zag chains, and are presumably epiphytic. Although the undulate margins of the valve are distinctive, it has been seen quite rarely in the IRL system, and was seen only once in SEM (Fig. 2, 3). In valve outline, N. tortosa resembles Toxarium undulatum, but the structure of that species is quite different.

  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

    Williams DM, Round FE. 1986. Revision of the genus Synedra Ehrenb. Diat Res 1:313-339.

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