The sea cucumber Echinopsolus murrayi Théel, 1886 n. comb. (Echinodermata: Holothuroidea) from the southwestern Atlantic, redescription of the holotype and description of new specimens

Mariano Ignacio Martinez, Julio Adrián Arriaga-Ochoa

Resumen


Psolus murrayi Théel, 1886 was one of the multiple species described from the specimens collected by the HMS Challenger Expedition. This species was placed in Psolus, genus with dorsal scales. Among holothuroids, there are some taxa that have a dense presence of dorsal ossicles, which gives them a psolid-like appearance. From the presence of different ossicles and the absence of scales on dorsal side, we here redescribe the species now, known as Echinopsolus murrayi (Théel, 1886) n. comb. This species has dorsal warts full of ossicles, ten tentacles and rectangular sole with three rows of podia. Body wall ossicles are plates and cups, and multilayered plates exclusively on dorsal body wall. For tentacles and podia, ossicles are curved and straight perforated bars.


Palabras clave


HMS Challenger; Psolidae; deep-sea; British Museum; Museo Argentino de Ciencias Naturales.

Texto completo:

PDF (English)

Referencias


Bohn, J.M. & M. Heß. 2014. The Antarctic holothurian genus Echinopsolus Gutt, 1990 (Dendrochirotida, Cucumariidae): brood pouches, spermatozoa, spermatozeugmata and taxonomic implications. Zootaxa 3841(4): 573–591. https://doi.org/10.11646/zootaxa.3841.4.7.

Burmeister, H. 1837. Handbuch der Naturgeschichte. Zum Gebrauch bei Vorlesungen. Zweite Abtheilung: Zoologie. T.C.F. Enslin, Berlin, pp 369–858.

Grube, A.E. 1840. Actinien, Echinodermen und Würmer des Adriatischen- und Mittelmeers nach eigenen Sammlungen beschrieben. J.H. Bon., Königsberg, 92 pp.

Gutt, J. 1990. New Antarctic holothurians (Echinodermata)—I. Five new species with four new genera of the order Dendrochirotida. Zoologica Scripta 19(1): 101–117.

https://doi.org/10.1111/j.1463-6409.1990.tb00243.x

Ludwig, H. 1894. The Holothurioidea. Memoirs of the Museum of Comparative Zoölogy at Harvard College 17(3): 1–183.

Ludwig, H. & S.G. Heding. 1935. Die Holothurien der Deutschen Tiefsee-Expedition. 1. Fusslose und dendrochirote Formen. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer Valdivia 1898–1899 24(2): 123–214.

O´Loughlin M, G. Pauley, N. Davey & F. Michonneau. 2011. The Antarctic regions a marine biodiversity hotspot for echinoderms: diversity and diversification of sea cucumbers. Deep-Sea Research II 58: 264–275.

Panina E.G., V.G. Stepanov, A. Smirnov & A. Martinov. 2020. Two new species of holothurians of the genus Echinopsolus Gutt, 1990 (Echinodermata: Dendrochirotida: Cucumariidae) from the North-Western Pacific. Zootaxa 4789(1): 233–246. 10.11646/zootaxa.4789.1.8.

Preu, B., F.J. Hernández-Molina, R. Violante, A.R. Piola, C.M. Paterlini, , T. Schwenk, I. Voigt, S. Krastel, V. Spiess. 2013. Morphosedimentary and hydrographic features of the northern Argentine margin: The interplay between erosive, depositional and gravitational processes and its conceptual implications. Deep-Sea Research I 75: 157–174. https://doi.org/10.1016/j.dsr.2012.12.013.

Théel, H. 1882. Report on the Holothuroidea, dredge by H.M.S. ’Challenger’ during the years 1873–76. Part I. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology 4 (part 13): 1–176.

Théel, H. 1886. Report on the Holothurioidea dredged by H.M.S. 'Challenger' during the years 1873-76. Part II. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology 14 (part 39): 1–290.

Voigt, I., R. Henrich, B.M. Preu, A.R. Piola, T.J.J. Hanebuth, T. Schwenk & C.M. Chiessi. 2013. A submarine canyon as a climate archive — Interaction of the Antarctic Intermediate Water with the Mar del Plata Canyon (Southwest Atlantic). Marine Geology 341: 46–57. https://doi.org/10.1016/j.margeo.2013.05.002.

Wood, S.V. 1844. Record of the discovery of an Alligator with several new Mammalia in the freshwater strata at Hordwell. Annals and Magazine of Natural History, including Zoology, Botany, and Geology 14: 349–351. https://doi.org/10.1080/037454809495192


Enlaces refback

  • No hay ningún enlace refback.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.