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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Codonella

Codonella Haekel, 1873 (ref. ID; 2014)

Class Polyhymenophora: Subclass Spirotricha: Order Oligotrichida: Suborder Tintinnina (ref. ID; 2014)

[ref. ID; 2014]
Lorica squat, urn- to pot-shaped, rigid and chitinous, sharply divided, both internally and externally, into an anterior collar-like region with a wider posterior bowl. The collar lacks the spiral structure that is a feature of some marine species. Uniformly ciliated body elongate, approximately trumpet-shaped, tapering posteriorly. Well-developed anterior adoral zone of membranelles. Ovoid macronucleus situated centrally. Planktonic.
Quote; Colin R. Curds, Michael A. Gates and David McL. Roberts "British and other freshwater ciliated protozoa Part II Ciliophora: Oligohymenophora and Polyhymenophora" Cambridge University Press, 1983 (ref. ID; 2014)

[ref. ID; 3597]
Lorica usually pot-shaped, apparently divided by a nuchal constriction and an inner shelf into a collar and a bowl; oral rim entire, regularly or irregularly serrated; collar generally forming a short truncated convex cone, sometimes with an elevated suboral ring; bowl rounded or ovate; aboral end round, conical, or flat, with or without a stout aboral horn; wall single-layered with an irregularly reticulated structure, sometimes carrying foreign particles on the surface. (ref. ID; 3597)

  1. Codonella acerca Jorgensen (ref. ID; 1940, 3597)
  2. Codonella amphorella Biedermann (ref. ID; 3597)
  3. Codonella apicata (ref. ID; 4464)
  4. Codonella cratera Kofoid & Campbell, 1929
    See; Tintinnopsis cratera (ref. ID; 3280)
  5. Codonella cratera (Leidy, 1877) (ref. ID; 909, 1621, 1629, 1940) reported year? (ref. ID; 1618, 3342, 3345) or (Leidy, 1877) Imhof, 1885 (ref. ID; 4488, 4609, 4613) reported author and year? (ref. ID; 191, 5388, 7768)
    See; Tintinnopsis lacustris (ref. ID; 2191)
    Syn; Codonella lacustris Entz, 1885 (ref. ID; 4609, 4613) or 1901 (ref. ID; 1621); Difflugia cratea Leidy, 1877 (ref. ID; 4609, 4613)
  6. Codonella cuspidata Kofoid & Campbell, 1939 (ref. ID; 4046)
  7. Codonella galea Hck. (ref. ID; 1940) reported author and year? (ref. ID; 4464)
  8. Codonella inflata Kofoid & Campbell (ref. ID; 3597)
  9. Codonella lacustris Entz, 1885
    See; Codonella cratera (ref. ID; 4613), Tintinnopsis cratera (ref. ID; 3280)
  10. Codonella nationalis Brandt (ref. ID; 3597)
  11. Codonella pusilla Cleve, 1900
    See; Codonellopsis pusilla (ref. ID; 3606)
  12. Codonella radix Imhof, 1886
    See; Tintinnopsis radix (ref. ID; 3606)
  13. Codonella rapa Kofoid & Campbell (ref. ID; 3597) reported author and year? (ref. ID; 1335)
  14. Codonella recta Kofoid & Campbell (ref. ID; 3597)
  15. Codonella ventricosa Entz, 1884
    See; Stenosemella nivalis (ref. ID; 3606)
  16. Codonella ventricosa Jorgensen, 1899
    See; Stenosemella ventricosa (ref. ID; 3607)

Codonella cratera (Leidy, 1877) (ref. ID; 909, 1621, 1629, 1940) reported year? (ref. ID; 1618, 3342, 3345) or (Leidy, 1877) Imhof, 1885 (ref. ID; 4488, 4609, 4613) reported author and year? (ref. ID; 191, 5388, 7768)

See

Tintinnopsis lacustris (ref. ID; 2191)

Synonym

Codonella lacustris Entz, 1885 (ref. ID; 4609, 4613) or 1901 (ref. ID; 1621); Difflugia cratea Leidy, 1877 (ref. ID; 4609, 4613)

Measurements

Lorica 60-70 by 40 um. (ref. ID; 1618)
54x34 um. (ref. ID; 3342)

Codonella cuspidata Kofoid & Campbell, 1939 (ref. ID; 4046)

Descriptions

This species is a true Codonella (in contrast to Codonaria oceanica), which lacks a suboral cone. It is bluntly pointed aborally, and has a slightly flaring collar characterized by an uneven edge. SEM reveals 2 sizes of coccoliths (2-4 um) incorporated into the lorica. (ref. ID; 4046)

Measurements

Dimensions of the lorica are taken from SEM micrograph: length 57, width 40 um. (ref. ID; 4046)

Codonella inflata Kofoid & Campbell (ref. ID; 3597)

Descriptions

Lorica bag-like, 1.4 oral diameters in length; collar distinct from the bowl by a slight nuchal constriction, with a somewhat serrated oral rim, dilated at its middle, 0.27 of the total length in height; bowl rotund, its greatest diameter 1.3 oral diameters; aboral region broadly rounded, showing a trace of elevation at its center; wall thickened on the nuchal constricted border to separate the lorica internally into two distinct parts, reticulation of the surface comparatively regular. (ref. ID; 3597)

Comments

The species differs from C. acerca Jorgensen in the possession of a short and more bulging collar and from C. nationalis Brandt in the inflated collar and the present of an inclination to become pointed at the aboral end. (ref. ID; 3597)

Measurements

Length 55; oral diameter 40 um. (ref. ID; 3597)

Codonella rapa Kofoid & Campbell (ref. ID; 3597) reported author and year? (ref. ID; 1335)

Descriptions

Lorica elongate, consisting of a low inflated collar and an ovate bowl with a stout aboral horn, its length 1.8 oral diameters; oral margin minutely serrated or uneven; collar more or less flaring, dish-shaped, 0.2 of the total length in height; nuchal constriction well-developed, 0.8 of an oral diameter; bowl stout ovoidal, broadest above its middle, 1.1 oral diameters in greatest diameter; aboral horn forming a short inverted cone of 40 degrees, its length 0.2 of the total length; wall with polygonal secondary structure varying in shape. (ref. ID; 3597)

Comments

The species differs from C. amphorella Biedermann in having a roughened oral rim and a stouter apical horn and from C. recta Kofoid & Campbell in possessing a more flaring collar and a distinct nuchal constriction. (ref. ID; 3597)

Measurements

Length 76; oral diameter 43 um. (ref. ID; 3597)