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Abstract:

In the southeastern Pacific Ocean off Chilean coasts some salp solitary zooids were found showing the main features of Helicosalpa younti Kashkina 1973, excepting the arrangement of the light organs is like its close relative H. virgula. H. younti was created by van Soest (1974) based upon the descriptions from the literature of two solitary zooids, but very important diagnostic characters as the number of muscle fibers were unknown, and aggregate zooids were not described. In the Chilean coasts samples, many aggregate zooids were found which are also described making special mention of characteristics not known for H. younti (e.g., dorsal tubercle and muscle fiber number). The differences in muscle fiber number of both solitary and aggregate zooids, which surpass considerably any number known from H. virgula, added to details of the intermediate muscle arrangement in the solitary zooids, seem to justify the permanence of H. younti as a valid taxon. The arrangement of the light organs may be a variable feature within a salp species or perhaps, more likely, subject to post-preservation artifactual changes. Another feature traditionally employed in species differentiation, the morphology of the dorsal tubercle, is variable with the specimen size.

Registro:

Documento: Artículo
Título:New data about Helicosalpa Younti Kashkina 1973 (Tunicata: Thaliacea), a very rare salpid species
Autor:Esnal, G.B.; Miranda Eldan, O.; Mujica Retamal, A.
Filiación:Departamento de Ciencias Biologicas, Facultad Ciencias Exactas Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:morphology; zooplankton; Pacific Ocean; Helicosalpa; Helicosalpa virgula; Helicosalpa younti; Invertebrata; Salpidae; Thaliacea; Urochordata
Año:1998
Volumen:62
Número:1
Página de inicio:73
Página de fin:79
Título revista:Bulletin of Marine Science
Título revista abreviado:Bull. Mar. Sci.
ISSN:00074977
CODEN:BMRSA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v62_n1_p73_Esnal

Referencias:

  • Apstein, C., Die Thaliaceen der Plankton-Expedition. B (1894) Verteilung der Salpen. Ergebn. Plankt. Exp., 2 (EAB), pp. 1-68
  • Bernard, M., Systématique et distribution saisonniere des Tuniciers Pélagiques d'Alger (1958) Rapp. P. V. Comm. Int. Expl. Mer Médit, 14 (N.S.), pp. 211-231
  • Esnal, G.B., Daponte, M.C., Stolon development and some aspects of musculature in the characterization of Ihlea racovitzai (van Beneden, 1913) and Ihlea magalhanica (Apstein, 1894) (Tunicata, Thaliacea) (1990) Polar Biol., 10, pp. 265-268
  • Foxton, P., Salpa fusiformis Cuvier and related species (1961) Disc. Rep., 32, pp. 1-32
  • Hubbard, L.T., Pearcey, W.C., Geographic distribution and relative abundance of Salpidae off the Oregon coast (1971) J. Fish. Res. Bd. Canada, 28, pp. 1831-1836
  • Ihle, J.E.W., Ihle-Landenberg, M.E., Cyclosalpa virgula (Vogt) und Cyclosalpa komaii n. sp (1936) Publ. Staz. Zool. Napoli, 16, pp. 274-283
  • Kashkina, A.A., A contribution to the fauna of Salpidae (Tunicata) in the Indian Ocean (1973) Zool. Zhurn., 52, pp. 215-219
  • Madin, L.P., Harbison, G.R., Salps of the genus Pegea Savigny 1816 (Tunicata: Thaliacea) (1978) Bull. Mar. Sci., 28, pp. 335-344
  • Metcalf, M.M., The Salpidae: A taxonomic study (1918) Bull. U.S. Natl. Mus., 100, pp. 5-189
  • Stiasny, G., Ueber die Testa der Salpen und ihre systematische Bedeutung (1927) Pubbl. Staz. Zool. Napoli, 7, pp. 386-457
  • Streiff, R., Ueber die Muskulatur der Salpen und ihre systematische Bedeutung (1908) Morph. Jahrb., Abt. f. Syst., 27, pp. 1-82
  • Thompson, H., (1948) Pelagic tunicates of Australia, , Commonwealth Council for Scientific and Industrial Research, Melbourne 196 p. 75 pl
  • Todaro, F., Sopra una nuova forma di Salpa (S. dolicosoma) (1883) Atti. Rend. R. Accad. Lincei, Ser., 3-8, pp. 41-43
  • Traustedt, M.P.A., Spolia Atlantica (1885) Bidrag tilkundskab om Salperne. Vidensk. Selsk. Skr. Naturv.-Math. Afd., 2 (8), pp. 334-400
  • Van Soest, R.W.M., The genus Thalia Blumenbach, 1798 (Tunicata, Thaliacea) with descriptions of two new species (1973) Beaufortia, 20 (271), pp. 193-212
  • Taxonomy of the subfamily Cyclosalpinae Yount, 1954 (Tunicata, Thaliacea), with descriptions of two new species (1974) Beaufortia, 22 (288), pp. 17-53
  • Zoogeography and speciation in the Salpidae (Tunicata, Thaliacea) (1975) Beaufortia, 23 (307), pp. 181-215
  • Vogt, C., Recherches sur les animaux inférieurs de la Méditerranée. II (1854) Sur les Tuniciers nageants de la mer de Nice. Mém. Inst. nat. Genev., 2, pp. 1-102
  • Yount, J.L., The taxonomy of the Salpidae (Tunicata) of the Central Pacific Ocean (1954) Pac. Sci., 8, pp. 276-330

Citas:

---------- APA ----------
Esnal, G.B., Miranda Eldan, O. & Mujica Retamal, A. (1998) . New data about Helicosalpa Younti Kashkina 1973 (Tunicata: Thaliacea), a very rare salpid species. Bulletin of Marine Science, 62(1), 73-79.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v62_n1_p73_Esnal [ ]
---------- CHICAGO ----------
Esnal, G.B., Miranda Eldan, O., Mujica Retamal, A. "New data about Helicosalpa Younti Kashkina 1973 (Tunicata: Thaliacea), a very rare salpid species" . Bulletin of Marine Science 62, no. 1 (1998) : 73-79.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v62_n1_p73_Esnal [ ]
---------- MLA ----------
Esnal, G.B., Miranda Eldan, O., Mujica Retamal, A. "New data about Helicosalpa Younti Kashkina 1973 (Tunicata: Thaliacea), a very rare salpid species" . Bulletin of Marine Science, vol. 62, no. 1, 1998, pp. 73-79.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v62_n1_p73_Esnal [ ]
---------- VANCOUVER ----------
Esnal, G.B., Miranda Eldan, O., Mujica Retamal, A. New data about Helicosalpa Younti Kashkina 1973 (Tunicata: Thaliacea), a very rare salpid species. Bull. Mar. Sci. 1998;62(1):73-79.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00074977_v62_n1_p73_Esnal [ ]