Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Parathyone itapuaensis
Issue: Vol. 4985 No. 2: 14 Jun. 2021
Type: Article
Published: 2021-06-14
DOI: 10.11646/zootaxa.4985.2.7
Page range: 245–252
Abstract views: 466
PDF downloaded: 33

A new species of Parathyone (Holothuroidea: Dendrochirotida: Cucumariidae) from northeastern Brazil, with a key to species

Museu de Zoologia, Universidade de São Paulo, São Paulo-SP, 04263-000, Brazil.
Museu de Zoologia, Universidade de São Paulo, São Paulo-SP, 04263-000, Brazil.
Biodiversity, Systematics, southwestern Atlantic, sea cucumber, µCT Echinodermata

Abstract

A new species of Dendrochirotida sea cucumber, Parathyone itapuaensis, is described and illustrated herein based on specimens collected from rocky intertidal regions of the northeastern coast of Brazil. The new species is characterized by a suite of morphological characters revealed by light stereomicroscope, SEM and microCT studies of the calcareous ring, dermal ossicles, Polian vesicles and madreporite. Parathyone itapuaensis sp. nov. is characterized by having 10 tentacles, two Polian vesicles and single madreporite; length of anterior process (radial plate) larger than length of the base of the radial plate; body wall with buttons with triangular knobs and knobbed multiperforated plates in the anal region; and tentacles with arched rods, knobbed in the margins and shallow cups knobbed in the outer and inner surfaces. A key to the recognition of Parathyone species is given.

References

  1. Ancona-Lopez, A.A. (1957) Sobre holotúrias do litoral sul brasileiro. Boletim da Faculdade de Filosofia Ciências e Letras da Universidade de São Paulo, Zoologia, 21, 5–54.
  2. https://doi.org/10.11606/issn.2526-3382.bffclzoologia.1957.120232
  3. Cutress, B.M. (1996) Changes in dermal ossicles during somatic growth in Caribbean littoral sea cucumbers (Echinordermata: Holothuroidea: Aspidochirotida). Bulletin of Marine Science, 58 (1), 44–116.
  4. Deichmann, E. (1930) The holothurians of the western part of the Atlantic Ocean. Bulletin of the Museum of Comparative Zoölogy at Harvard College, 71, 43–226.
  5. Deichmann, E. (1957) The Littoral Holothurians of the Bahama Islands. Bulletin of the American Museum of Natural History, 1821, 1–20.
  6. Ludwig, H. (1875) s.n. Beiträge zur Kenntniss der Holothurien Arbeiten aus dem zoologisch-zootomischen Institut in Würzburg, 2, 77–120.
  7. Ludwig, H. (1889–1892) Die Seewalzen. In: Bronn, H.G. (Ed.), Klassen und Ordnungen des Thier-Reichs wissenschaftlich dargestellt in Wort und Bild. Vol. 2. Part 3. Echinodermen (Stachelhäuter), First book. C. F. Winter, Leipzig, pp. 1–176 (1889), pls. 1–8 (1889) + 177–240, pls. 9–12 (1890) + 241–376, pls. 13–17 (1891) + 377–460 (1892).
  8. Martins, L. (2019) Ontogenetic variation of the ossicles in Pseudothyone belli (Ludwig, 1887) with a description of a new Sclero-dactylidae (Echinodermata: Holothuroidea: Dendrochirotida) from Southwestern Atlantic, Marine Biology Research, 15, 434–443.
  9. https://doi.org/10.1080/17451000.2019.1662051
  10. Martins, L., Souto, C. & Tavares, M. (2021) Exploring the macrostructural anatomy of dendrochirotid sea cucumber’s (Echino-dermata) calcareous rings under micro-computed tomography and its bearing on phylogeny. Journal of anatomy, 238 (6), 1386–1403.
  11. https://doi.org/10.1111/joa.13385
  12. O’Loughlin, P.M. & Alcook, N. (2000) The New Zealand Cucumariidae (Echinodermata: Holothuroidea). Memoirs of Museum Victoria, 58, 1–24.
  13. https://doi.org/10.24199/j.mmv.2000.58.1
  14. O’Loughlin, P.M., Barmos, S. & VandenSpiegel, D. (2012) The phyllophorid sea cucumbers of Southern Australia (Echinoderma-ta: Holothuroidea: Phyllophoridae). Memoirs of Museum Victoria, 69, 269–308.
  15. https://doi.org/10.24199/j.mmv.2012.69.05
  16. Panning, A. (1949) Versuch einer Neuordnung der familie Cucumariidae (Holothuroidea: Dendrochirotida). Zoologische Jahrbücher Abtheilung für Systematik, 78,404–470.
  17. Prata, J., Cynthia, L.C.M. & Christoffersen, M. (2020) Dendrochirotida (Echinodermata: Holothuroidea) from the northeastern coast of Brazil. Zootaxa, 4755 (3), 401–453.
  18. https://doi.org/10.11646/zootaxa.4755.3.1
  19. Semper, C. (1867) Reisen im Archipel der Philippinen. Zweiter Theil. Wissenschaftliche Resultate. Erster Band. W. Engelmann, Leipzig, iv + 288 pp., 40 pls.
  20. Thandar, A.S. (1989) The status of some Southern African nominal species of Cucumaria (s.e) referable to a new genus and their ecological isolation. South African Journal of Zoology, 22, 287–296.
  21. https://doi.org/10.1080/02541858.1987.11448059
  22. Vaney, C. (1914) Holothuries. Deuxieme Expedition Antarctique Francaise (1908-1910) 5, 1–52.
  23. https://doi.org/10.5962/bhl.title.6956
  24. Verrill, A.E. (1868) Notes on the Radiata in the Museum of Yale College, with descriptions of new genera and species, 4. Notice of the corals and Echinoderms collected by Prof. C.F. Hartt, at the Abrolhos Reefs, Province of Bahia, Brazil, 1867. Transac-tions of the Connecticut Academy of Arts and Science, 1, 247–613.
  25. https://doi.org/10.1086/270248