Dynamena disticha
Creators
Description
Dynamena disticha (Bosc, 1802)
Fig. 8d
Sertularia disticha Bosc, 1802: 101, pl. 29, fig. 2.
Type locality. Atlantic Ocean: “...sur le fucus natans...” (Sargassum natans) (Bosc 1802).
Voucher material. Fort Pierce, Fort Pierce Inlet State Park, 27°28’29.5”N, 80°17’25.8”W, on stranded Sargassum sp., 14.vii.2012, 28° C, 35‰, collected manually, one colony, 4 mm high, without gonophores, coll. D.R. Calder, ROMIZ B3966.
Remarks. Hydroids referred to Dynamena disticha (Bosc, 1802) in the western Atlantic occur in two forms, a stunted one (<1 cm high) found on floating Sargassum and a much larger one (up to 5 cm high) on a variety of benthic substrates. It remains to be confirmed whether they are actually conspecific. Specimens observed here, growing on a species of Sargassum, were of the stunted variety as originally described by Bosc (1802).
Comments on the taxonomy of this species have been given earlier (Calder 1991a). Included in the synonymy of D. disticha therein were the following, all originally described from the western North Atlantic: Sertularia exigua Allman, 1877, S. distans Allman, 1877, S. complexa Clarke, 1879, Dynamena bilatteralis Brooks, 1883, Sertularia mayeri Nutting, 1904, S. pourtalesi Nutting, 1904, and with question Dynamena cornicina McCrady, 1859. An extensive list of literature on D. disticha was given in Medel & Vervoort (1998).
Reported distribution. Atlantic coast of Florida. First record.
Western Atlantic. Massachusetts (Nutting 1901, as Sertularia cornicina and S. complexa) to Argentina (Oliveira et al. submitted), including Bermuda (Calder 1991a), the Gulf of Mexico (Calder & Cairns 2009), and the Caribbean Sea (Calder & Kirkendale 2005; Galea 2008). The species has been reported on Sargassum in the Gulf Stream as far north as Nova Scotia (Fraser 1918, as S. cornicina).
Elsewhere. Circumglobal in tropical, subtropical and temperate waters (Peña Cantero & García Carrascosa 2002).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- ROMIZ
- Event date
- 2012-07-14
- Family
- Sertulariidae
- Genus
- Dynamena
- Kingdom
- Animalia
- Material sample ID
- B3966
- Order
- Leptothecata
- Phylum
- Cnidaria
- Scientific name authorship
- Bosc
- Species
- disticha
- Taxon rank
- species
- Verbatim event date
- 2012-07-14
- Taxonomic concept label
- Dynamena disticha (Bosc, 1802) sec. Calder, 2013
References
- Bosc, L. A. G. (1802) Histoire naturelle des vers, contenant leur description et leurs moeurs; avec figures dessinees d'apres nature. Tome 3. Guilleminet, Paris, 270 pp.
- Calder, D. R. (1991 a) Shallow-water hydroids of Bermuda. The Thecatae, exclusive of Plumularioidea. Royal Ontario Museum, Life Sciences Contributions, 154, 1 - 140.
- Allman, G. J. (1877) Report on the Hydroida collected during the exploration of the Gulf Stream by L. F. de Pourtales, assistant United States Coast Survey. Memoirs of the Museum of Comparative Zoology at Harvard College, 5 (2), 1 - 66.
- Clarke, S. F. (1879) Report on the Hydroida collected during the exploration of the Gulf Stream and Gulf of Mexico by Alexander Agassiz, 1877 - 78. Bulletin of the Museum of Comparative Zoology at Harvard College, 5, 239 - 252.
- Brooks, W. K. (1883) List of medusae found at Beaufort, N. C., during the summers of 1880 and 1881. Studies from the Biological Laboratory, Johns Hopkins University, 2, 135 - 146.
- Nutting, C. C. (1904) American hydroids. Part II. The Sertularidae. Smithsonian Institution, United States National Museum Special Bulletin, 4 (2), 1 - 325.
- McCrady, J. (1859) Gymnopthalmata of Charleston Harbor. Proceedings of the Elliott Society of Natural History, 1, 103 - 221.
- Medel, M. D. & Vervoort, W. (1998) Atlantic Thyroscyphidae and Sertulariidae (Hydrozoa, Cnidaria) collected during the CANCAP and Mauritania-II expeditions of the National Museum of Natural History, Leiden, The Netherlands. Zoologische Verhandelingen, 320, 1 - 85.
- Nutting, C. C. (1901) The hydroids of the Woods Hole region. Bulletin of the United States Fish Commission, 19, 325 - 386.
- Calder, D. R. & Cairns, S. D. (2009) Hydroids (Cnidaria: Hydrozoa) of the Gulf of Mexico. In: Felder, D. L. & Camp, D. K. (Eds.), Gulf of Mexico. Origin, waters, and biota. Vol. 1. Biodiversity. Texas A & M University Press, College Station, pp. 381 - 394.
- Calder, D. R. & Kirkendale, L. (2005) Hydroids (Cnidaria, Hydrozoa) from shallow-water environments along the Caribbean Coast of Panama. Caribbean Journal of Science, 41, 476 - 491.
- Galea, H. R. (2008) On a collection of shallow-water hydroids (Cnidaria: Hydrozoa) from Guadeloupe and Les Saintes, French Lesser Antilles. Zootaxa, 1878, 1 - 54.
- Fraser, C. M. (1918) Hydroids of eastern Canada. Contributions to Canadian Biology, 1917 - 1918, 329 - 367.
- Pena Cantero, A. L. & Garcia Carrascosa, A. M. (2002) The benthic hydroid fauna of the Chafarinas Islands (Alboran Sea, western Mediterranean). Zoologische Verhandelingen, 337, 1 - 180.