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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Mesodinium

Mesodinium Stein, 1862 (ref. ID; 3540, 3690, 4352) or 1863 (ref. ID; 2013, 4613, 4971)

From Dr. Inaki

Class Kinetofragminophora: Subclass Gymnostomata: Order Haptorida: Family Didiniidae (ref. ID; 2013)
Family Mesodiniidae: Litostomatea (ref. ID; 4971)

[ref. ID; 2013]
Body shape pyriform but divided into two sections by a waist-like furrow. Anterior narrows apically, posterior broadly rounded. Oral aperture apical, cytopharynx with 8 to 12 protruding trichites which are forked at the anterior most end. Somatic ciliation reduced to 2 bands of cilia which arise from the central body furrow. Both bands arise from short oblique rows of kinetosomes, the posterior band consists of rows components of the anterior ciliary band are stiff and bristle-like, those of the posterior band are membranelle-like and project backwards. Macronucleus centrally located. Contractile vacuoles have been reported in both posterior and mid-lateral positions.
Quote; Colin R. Curds "British and other freshwater ciliated protozoa Part I Ciliophora: Kinetofragminophora" Cambridge University Press, 1982 (ref. ID; 2013)
  1. Mesodinium acarus Stein, 1862 (ref. ID; 1308, 1335, 1619, 1629, 2245, 3540) or 1867 (ref. ID; 4612, 4613) reported year? (ref. ID; 1618, 5624) reported author and year? (ref. ID; 191)
    Syn; Mesodinium fimbriatum Stokes, 1887 (ref. ID; 1619, 3540); Mesodinium phialinum Maskell, 1887 (ref. ID; 1619, 3540, 4613)
  2. Mesodinium cinctum Calkins, 1902 (ref. ID; 1619, 3540)
  3. Mesodinium fimbriatum Stokes, 1887 (ref. ID; 4612, 4613)
    See; Mesodinium acarus Stein, 1862 (ref. ID; 1619, 3540)
  4. Mesodinium phialinum Maskell, 1887
    See; Mesodinium acarus Stein, 1862 (ref. ID; 1619, 3540)
  5. Mesodinium pulex Claparede & Lachmann, 1858 (ref. ID; 1308, 1619, 1629, 2245, 2316, 3119, 3540, 4814) reported year? (ref. ID; 1219, 1618, 3690, 3771) or (Claparede & Lachmann) Stein, 1862 (ref. ID; 3564), (Claparede & Lachmann, 1859) Stein, 1867 (ref. ID; 4612, 4613) reported author and year? (ref. ID; 4971)
    Syn; Halteria pulex Claparede & Lachmann, 1858 (ref. ID; 1619) or 1859 (ref. ID; 4612, 4613) reported year? (ref. ID; 3690); Halteria rubra Lochmann, 1908 (ref. ID; 1619, 3540); Mesodinium pulex var. striata Gourret & Roeser, 1886 (ref. ID; 1619, 3540)
  6. Mesodinium pulex f. pupula Kahl, 1933 (ref. ID; 1620)
  7. Mesodinium pulex var. striata Gourret & Roeser, 1886
    See; Mesodinium pulex Claparede & Lachmann, 1858 (ref. ID; 1619, 3540)
  8. Mesodinium pupula Kahl, 1933 (ref. ID; 3119) reported year? (ref. ID; 2117)
  9. Mesodinium recurva Kellicott, 1885
    See; Askenasia volvox Claparede & Lachmann, 1858 (ref. ID; 1619, 3540)
  10. Mesodinium rubrum Lohmann, 1908 (ref. ID; 4991, 7666) reported author and year? (ref. ID; 191)
    See; Myrionecta rubra (ref. ID; 1877, 4971)
    Syn; Myrionecta rubra Jankowski, 1976 (ref. ID; 4991)
  11. Mesodinium velox Tamar, 1986 (ref. ID; 4814) reported author and year? (ref. ID; 4612, 4613)

Mesodinium acarus Stein, 1862 (ref. ID; 1308, 1335, 1619, 1629, 2245, 3540) or 1867 (ref. ID; 4612, 4613) reported year? (ref. ID; 1618, 5624) reported author and year? (ref. ID; 191)

Synonym

Mesodinium fimbriatum Stokes, 1887 (ref. ID; 1619, 3540); Mesodinium phialinum Maskell, 1887 (ref. ID; 1619, 3540, 4613)

Descriptions

Oral tentacles with capitate tip; salt water. (ref. ID; 1618)

Measurements

10-16 um long. (ref. ID; 1618)

Mesodinium pulex Claparede & Lachmann, 1858 (ref. ID; 1308, 1619, 1629, 2245, 2316, 3119, 3540, 4814) reported year? (ref. ID; 1219, 1618, 3690, 3771) or (Claparede & Lachmann) Stein, 1862 (ref. ID; 3564), (Claparede & Lachmann, 1859) Stein, 1867 (ref. ID; 4612, 4613) reported author and year? (ref. ID; 4971)

Synonym

Halteria pulex Claparede & Lachmann, 1858 (ref. ID; 1619) or 1859 (ref. ID; 4612, 4613) reported year? (ref. ID; 3690); Halteria rubra Lochmann, 1908 (ref. ID; 1619, 3540); Mesodinium pulex var. striata Gourret & Roeser, 1886 (ref. ID; 1619, 3540)

Descriptions

Oral tentacles with trifurcate tips. (ref. ID; 1618)
Pyriform but was divided into two by a waist-like furrow. Somatic ciliation reduced to two bands arising from central furrow. Trichites of the cytopharynx protruded slightly. Distinctive saltatorial locomotion. (ref. ID; 2316)

Remarks

Seven populations of M. pulex were examined morphometriclaly. (ref. ID; 4814)

Measurements

Body 21-38 um long (freshwater forms), 20-31 um long (salt water forms). (ref. ID; 1618)
Size 25 um x maximum diameter of 15 um. (ref. ID; 2316)

Mesodinium rubrum Lohmann, 1908 (ref. ID; 4991, 7666) reported author and year? (ref. ID; 191)

See

Myrionecta rubra (ref. ID; 1877, 4971)

Synonym

Myrionecta rubra Jankowski, 1976 (ref. ID; 4991)

Descriptions

The ciliary structure. (ref. ID; 7666)