Base de Datos de las Especies de Galápagos

La Base de Datos de las Especies de Galápagos comparte la información de las especies de nuestras Colecciones de Historia Natural.

Obelia dichotoma (Linnaeus, 1758)

hidroide, Hidrozoo, Hydrozoa

Colonias pequeñas, de 1-2 cm de altura con tallos en zig-zag, un mando en forma de manubrio y pediceladas hydrothecae en forma de tubo. Más compacto en las zonas de fuerte corriente.

Se encuentra en zonas de corrientes fuertes y débiles.

Taxonomía

Dominio
Eukaryota

Reino
Animalia

Filo
Cnidaria

Clase
Hydrozoa

Orden
Leptothecata

Suborden
Proboscoida

Familia
Campanulariidae

Género
Obelia

Especie
dichotoma

Categoría de taxón: Aceptado

Note: Obelia alternata was often misidentified as O. dichotoma due to underestimation of species diversity. Distinctive features include geniculate stems and short, annulated hydrothecal pedicels. It is recognized as a valid species, known only from the Galapagos Islands, and was collected from Isla San Cristóbal (Calder, et al. 2021). Syn.: Campanularia brasiliensis Meyen, 1834, Campanularia caulini Delle Chiaje, 1841, Campanularia cavolinii Deshayes & Edwards, 1836, Campanularia cheloniae Allman, 1888, Campanularia dichotoma (Linnaeus, 1758), Campanularia maior Meyen, 1834, Campanularia obtusidens Jäderholm, 1904, Eucope articulata A. Agassiz, 1865, Eucope parasitica A. Agassiz, 1865, Gonothyraea integra Fraser, 1940, Laomedea dichotoma (Linnaeus, 1758), Laomedea divaricata McCrady, 1859, Laomedea gracilis Dana, 1846, Laomedea sargassi Broch, 1913, Obelia Adelungi Hartlaub, 1884, Obelia alternata Fraser, 1938, Obelia angulosa Bale, 1888, Obelia arruensis Marktanner-Turneretscher, 1890, Obelia articulata (Agassiz, 1865), Obelia australis von Lendenfeld, 1885, Obelia biserialis Fraser, 1948, Obelia borealis Nutting, 1901, Obelia braziliensis (Meyen, 1834) (misspelling), Obelia cheloniae (Allman, 1888), Obelia chinensis Marktanner-Turneretscher, 1890, Obelia commissuralis McCrady, 1859, Obelia congdoni Hargitt, 1909, Obelia coughtreyi Bale, 1924,Obelia dubia Nutting, 1901, Obelia equilateralis Fraser, 1938, Obelia everta Hargitt, 1927, Obelia fragilis Calkins, 1899,Obelia gracilis Calkins, 1899, Obelia griffini Calkins, 1899, Obelia helgolandica Hartlaub, 1884, Obelia nigrocaulus Hilgendorf, 1898, Obelia nodosa Bale, 1924, Obelia obtusidens (Jäderholm, 1904), Obelia plicata Hincks, 1868, Obelia pygmaea Coughtrey, 1876, Obelia racemosa Fraser, 1941, Obelia rhunicola Billard, 1901, Obelia sinuosa Leloup, 1935, Obelia solowetzkiana Schydlwsky, 1902, Obelia surcularis Calkins, 1899, Obelia tenuis Fraser, 1938a, Obelia undotheca Stechow, 1923, Schizocladium ramosum Allman, 1871,Sertularia dichotoma Linnaeus, 1758 (Horton et al., 2021).

Origen: Criptogénica

Estado

Categoría en la Lista Roja de la UICN: No evaluado

Distribución

Mapa de ocurrencias de colección o registros de observación para esta especie en nuestra base de datos de colecciones.

Referencias

  • Appeltans, W. Bouchet, P., Boxshall, G.A., Fauchald, K., Gordon, D.P., Hoeksema, B.W., Poore, G.C.B., van Soest, R.W.M., Stöhr, S., Walter, T.C., Costello, M.J. (eds.) (2010) World Register of Marine Species (WoRMS). Available online at http://www.marinespecies.org.
  • Hickman, C.P. Jr. (2008) A field guide to corals and other radiates of Galápagos. Sugar Spring Press, Lexington, Virginia, 162 pp.
  • Banks, S. Vera, M. & Chiriboga, A. (2009) Establishing Reference Points to Assess Long-Term Change in Zooxanthellate Coral Communities of the Northern Galapagos Coral Reefs. J. Sci. Conserv. in the Galapagos Islands, p. 43-64.
  • Calder, D.R. Mallinson, J.J., Collins, K. & Hickman, C.P. (2003) Additions to the Hydroids (Cnidaria) of the Galapagos, with a List of Species Reported from the Islands. J. Nat. Hist. 37:1173-1218.
  • Fraser, C.M. (1939) Distribution of the hydroids in the collections of the Allan Hancock Expeditions. Fraser, M. (1939). Distribution of the hydroids in the collections of the Allan Hancock Expeditions. In Allan Hancock Pacific Expeditions. (Vol. 4, pp. 155–178).
  • Calder, D.R. Carlton, J. T., Larson, K., Mallinson, J. J., Choong, H. H. C., Keith, I., & Ruiz, G. M (2019) Hydroids (Cnidaria, Hydrozoa) from marine fouling assemblages in the Galápagos Islands, Ecuador Aquatic Invasions (2019) Volume 14, Issue 1: 21–58
  • Carlton, J. T. Keith, I., & Ruiz, G. M. (2019) Assessing marine bioinvasions in the Galápagos islands: Implications for conservation biology and marine protected areas. Aquatic Invasions, 14(1), 1–20. https://doi.org/10.3391/ai.2019.14.1.01
  • Horton, T. Horton, T., Kroh, A., Ahyong, S., Bailly, N., Boyko, C. B., Brandão, S. N., Gofas, S., Hooper, J. N. A., Hernandez, F., Holovachov, O., Mees, J., Molodtsova, T. N., Paulay, G., Decock, W., Dekeyzer, S., Poffyn, G., Vandepitte, L., Vanhoorne, B., Adlard, R., ... Zhao, Z. (2021) World Register of Marine Species. Available from https://www.marinespecies.org at VLIZ.
  • Freaser, McLean (1948) Hydroids of the Allan Hancock Pacific Expeditions since March, 1938. Fraser, M. (1948). Hydroids of the Allan Hancock Pacific Expeditions since March, 1938. In Allan Hancock Pacific Expeditions. (5th ed., pp. 179–334).
  • Calder, D.R. Carlton, J. T., Keith, I., Larson, K., McCann, L., Geller, J., Wheelock, M., Choong, H. H. C., & Ruiz, G. M. (2021) Additions to the hydroids (Cnidaria, hydrozoa) of marine fouling communities on the mainland of ecuador and in the galapagos islands Aquatic Invasions, 16(2), 208–252. https://doi.org/10.3391/ai.2021.16.2.02
  • Fraser, C. M. (1938) Hydroids of the 1932, 1933, 1935 and 1938 Allan Hancock Pacific Expeditions In Allan Hancock Pacific Expeditions (pp. 1–152)

Se puede descargar y utilizar la información de esta página, reconociendo el origen de los datos.

Esta página debe citarse como sigue:

"Galapagos Species Database, Obelia dichotoma", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/es/checklist/?species=7891. Accessed 5 May 2025.