Certesella

Last updated

Certesella
Certesella larai n sp from Parque Nacional Alerce Costero.png
Certesella larai specimens from Chile
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Phylum: Amoebozoa
Class: Tubulinea
Order: Arcellinida
Family: Hyalospheniidae
Genus: Certesella
Loeblich & Tappan, 1961 [1]
Type species
Certesella martiali
(Certes, 1891) Loeblich & Tappan, 1961
Species
Synonyms [2] [3]
PenardiellaJung, 1942
(not Penardiella Kahl, 1930)

Certesella is a genus of testate amoebae belonging to the family Hyalospheniidae. It is characterized by a test that presents two symmetrical holes near the opening, and by the presence of internal teeth within the test. It contains four species previously assigned to Nebela , as well as one species discovered in 2021.

Contents

Distribution

Certesella species are predominantly found in the Southern hemisphere, previously Gondwanaland. [4] Abundant locations include southern Chile, Argentina, Antarctica, Australia, New Zealand, Java, Sumatra, New Guinea, Colombia and Marion Island. [2] Two species, however, have been sampled from the Northern hemisphere: C. certesi in Mexico, [5] and C. larai in Dominican Republic. [6] They inhabit peatlands of Sphagnum mosses with wet acidic soils. [7]

Morphology

SEM image of Certesella larai Certesella larai n sp SEM.png
SEM image of Certesella larai

Certesella is a genus of eukaryotic unicellular arcellinid amoebae with a pyriform or flask-shaped test. [1] The base of the test, which is the posterior end, is rounded. The aperture, located at the anterior end, is oval, surrounded by a smooth chitinous lip. The inner side of the test presents several conical denticles or "teeth" that are characteristic of the genus. [6] There are two symmetrical circular holes that go through the anterior half of the test, something also particular to this genus [2] The test itself is compressed when viewed laterally, and is composed of very thin, almost transparent, polygonal [1] or circular plates. [2]

Taxonomy

The genus, originally named PenardiellaJung, 1942, contains species previously assigned to Nebela , a genus of the same family Hyalospheniidae. [8] However, because a genus of ciliates already used the name Penardiella since 1930 (i.e. it was a homonym), it was later renamed to Certesella in 1961 by micropaleontologists Loeblich and Tappan. [2] It encompasses the following species:

References

  1. 1 2 3 4 Loeblich, Alfred Richard; Tappan, Helen Niña (1961). "Remarks on the systematics of the Sarkodina (Protozoa), renamed homonyms and new and validated genera". Proceedings of the Biological Society of Washington. 74: 213–234.
  2. 1 2 3 4 5 6 7 Vucetich, María Cristina (1978). "Comentarios sobre el género Certesella Loeblich & Tappan, 1961 y estudio de la estéreo ultraestructura tecal de tres especies austroamericanas (Rhizopoda Testaceolobosa)" [Comments on the genus Certesella Loeblich & Tappan, 1961 and the study of the thecate stereo ultrastructure of three Austroamerican species (Rhizopoda Testacealobosa)](PDF). Obra Centenario, Museo de la Plata, Zoología (in Spanish). 6: 305–313.
  3. ↑ Bobrov, Anatoly; Kosakyan, Anush (2015). "A New Species from Mountain Forest Soils in Japan: Porosia paracarinata sp. nov., and Taxonomic Concept of the Genus Porosia Jung, 1942". Acta Protozoologica. 54 (4): 289–294. doi:10.4467/16890027AP.15.024.3538.
  4. ↑ Smith, Humphrey Graham; Bobrov, Anatoly; Lara, Enrique (2008). "Diversity and biogeography of testate amoebae". Biodiversity and Conservation. 17 (2): 329–343. doi:10.1007/978-90-481-2801-3_8.
  5. ↑ Bobrov A, Krasilnikov P, García-Calderón NE (2013). "Biogeography of testate amoebae in the soils of Mexico". Biodiversity and Conservation. 22 (12): 2837–2855. Bibcode:2013BiCon..22.2837B. doi:10.1007/s10531-013-0558-5. S2CID   254285272.
  6. 1 2 3 Bobrov, Anatoly; Duckert, Clément; Mitchell, Edward A. D. (2021). "Certesella larai (Amoebozoa: Arcellinida: Hyalospheniformes) a new soil testate amoeba species from the Dominican Republic and Chile challenges the definition of genera Certesella and Porosia". Acta Protozoologica. 60: 61–75. doi: 10.4467/16890027AP.21.007.15381 .
  7. ↑ Bamforth, S. S. (2015). "Composition of Soil Testate Amoebae Communities: Their Structure and Modifications in the Temperate Rain Forests of New Zealand and Tasmania". Journal of Eukaryotic Microbiology. 62 (2): 217–226. doi:10.1111/jeu.12171. PMID   25227264. S2CID   19472991.
  8. ↑ González-Miguéns, Rubén; Todorov, Milcho; Blandenier, Quentin; Duckert, Clément; Porfirio-Sousa, Alfredo L.; Ribeiro, Giulia M.; Ramos, Diana; Lahr, Daniel J.G.; Buckley, David; Lara, Enrique (2022). "Deconstructing Difflugia: The tangled evolution of lobose testate amoebae shells (Amoebozoa: Arcellinida) illustrates the importance of convergent evolution in protist phylogeny". Molecular Phylogenetics and Evolution. 175: 107557. doi: 10.1016/j.ympev.2022.107557 . hdl: 10261/281619 . ISSN   1055-7903. PMID   35777650.
  9. ↑ Wailes, G. H. (October 1913). "Freshwater Rhizopod:i from North and South America". Zoological Journal of the Linnean Society. 32 (216): 201–218. doi:10.1111/j.1096-3642.1913.tb01776.x.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.