Goniomonas pacifica Larsen and Patterson 1990

Lee, Won Je, 2015, Small Free-Living Heterotrophic Flagellates from Marine Sediments of Gippsland Basin, South-Eastern Australia, Acta Protozoologica 54 (1), pp. 53-76 : 56-57

publication ID

https://doi.org/ 10.4467/16890027AP.15.005.2192

DOI

https://doi.org/10.5281/zenodo.12522255

persistent identifier

https://treatment.plazi.org/id/0B708784-E660-892B-FFEF-F9142781D07A

treatment provided by

Felipe

scientific name

Goniomonas pacifica Larsen and Patterson 1990
status

 

Goniomonas pacifica Larsen and Patterson 1990 ( Fig. 2c View Fig )

Observation: Cells are 4 to 10 µm long with several distinct longitudinal ridges on both sides of the cell. There is a row of about seven to nine ejectisomes near the anterior end of the cell, which is truncated with the posterior end rounded. Two flagella of similar length emerge from a small anterior depression and are directed anteriorly. When the cells are swimming, two flagella diverge in different directions.

Remarks: This species is one of the most widely reported taxa from diverse sites worldwide ( Patterson and Lee 2000). Goniomonas pacifica is similar to a freshwater species ( G. truncata ) in cell shape and having ridges. Also, the length ranges of the two species overlap ( G. pacifica , 4 to 15 µm; G. truncata , 3 to 25 µm). Further study is required to establish the identities of these species. Skvortzov (1932) described Monas abrupta Skvortzov 1932 , which is oval and 7 to 12 µm long, and has ejectisomes near the anterior end of the cell. In the drawings of Skvortzov, two flagella arise from the anterior end of the cell and diverge in different directions. The species is certainly not from the stramenopile genus Monas , and he may have observed a species of Goniomonas . Given the lack of details, ambiguity and absence of appropriate comparisosn in Skvortzov’s descriptions, it is not clear precisely what taxon he observed. The taxon is therefore regarded as a nomen nudum (e.g., Goniomonas abrupta ).

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