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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Monosiga

Monosiga Kent, 1880 (ref. ID; 4921) reported year? (ref. ID; 1618)

[ref. ID; 1618]
Solitary; with or without stalk; occasionally with short pseudopodia; attached to freshwater plants. (ref. ID; 1618)
  1. Monosiga fusiformis Kent (ref. ID; 3497)
  2. Monosiga longitenax Hada, 1968 (ref. ID; 3497)
  3. Monosiga ovata Kent, 1880 (ref. ID; 4921) reported year? (ref. ID; 1618, 1796, 3517) reported author and year? (ref. ID; 3321)
  4. Monosiga robusta Stokes (ref. ID; 1618)
  5. Monosiga varians Skuja, 1948 (ref. ID; 4921)

Monosiga fusiformis Kent (ref. ID; 3497)

Descriptions

The fusiform body has a flagellum twice as long as it, and a funnel-shaped protoplasmic collar as high as body. Protoplasmic currents are apparently observed in the membrane of the collar. There are a nucleus in the center and a fewer flexible grobules in the posterior part of the body. (ref. ID; 3497)

Measurements

Length 6-13 um; breadth 3-6 um; height of the collar 5-10 um; oral diameter of a collar 5-9 um. (ref. ID; 3497)

Monosiga longitenax Hada, 1968 (ref. ID; 3497)

Descriptions

The body having a long stick consists of an ovate main body and a low protoplasmic collar. The flagellum is long, being 3-4 times as long as a body, of which a surface is rather rough due to attachment of granular particles. (ref. ID; 3497)

Comments

The new species is different from the published ones of the genus Monosiga in having a low collar and a roughened surface. (ref. ID; 3497)

Type locality

The new form attaching to plankton algae was detected from coastal water of a salinity of 32.5 0/00 taken in Hiroshima Bay on December 15, 1967. (ref. ID; 3497)

Measurements

Length 6-7 um; height of collar 2.0-2.5 um; length of a stick 18-40 um. (ref. ID; 3497)

Monosiga ovata Kent, 1880 (ref. ID; 4921) reported year? (ref. ID; 1618, 1796, 3517) reported author and year? (ref. ID; 3321)

Descriptions

With a short stalk. (ref. ID; 1618)

Measurements

5-15 um long. (ref. ID; 1618)
Cell volume 24+/-9.5 um3, collar length 7.0+/-1.0 um. (ref. ID; 3321)

Monosiga robusta Stokes (ref. ID; 1618)

Descriptions

Stalk very long. (ref. ID; 1618)

Measurements

13 um long. (ref. ID; 1618)