|Researched by||Saskiya Richards||Refereed by||Admin|
|Other common names||Plumed hydroid, Plume hydroid||Synonyms||-|
Aglaophenia tubulifera is a colonial hydroid that is infrequently branched at the stolon and has singular, erect, feather-like plumes with brown, monosiphonic stems reaching up to 6 cm in height. The plumes have numerous yellowish, straight or slightly curved branches (hydrocladia) that alternate on either side of the stem and absent towards the base. The upper surface of each branch has a single row of 4 polyps; a feeding hydranth that is nearest the stem and 3 inconspicuous mouth less nematophores. Hydranths are short and cylindrical with an encirclement of 10 short, round-tipped tentacles around the conical hypostome (mouth region) that is encased by a protective chitinous, elongated cup (hydrothecae). The hydrothecae are longer than the hydranths and have 9 projecting cusps, the outer one longest. Nematophores are smaller than the hydranths and encased by nematothecae, those furthest from the stem are horizontally level with the rim of hydrothecae on the same branch. Individual plumes have up to 12 groups of reproductive gonothecae that are protected by basket-like structures of yellowish branches (corbulae) and vary from 0.19 cm to 0.35 cm in length.
Colonies of Aglaophenia tubulifera are dioecious. In Roscoff, reproduction has been known to take place from June-September (Svoboda & Cornelius, 1991). The brownish colour of the stem is due to symbiotic zooxanthellae (Svoboda & Cornelius, 1991). The spacing between the branches increases with water depth.
- none -
Bruce, J.R., Colman, J.S. & Jones, N.S., 1963. Marine fauna of the Isle of Man. Liverpool: Liverpool University Press.
Cornelius, P.F.S., 1995b. North-west European thecate hydroids and their medusae. Part 2. Sertulariidae to Campanulariidae. Shrewsbury: Field Studies Council. [Synopses of the British Fauna no. 50]
Crothers, J.H. (ed.), 1966. Dale Fort Marine Fauna. London: Field Studies Council.
Fish, J.D. & Fish, S., 1996. A student's guide to the seashore. Cambridge: Cambridge University Press.
Hayward, P., Nelson-Smith, T. & Shields, C. 1996. Collins pocket guide. Sea shore of Britain and northern Europe. London: HarperCollins.
Hayward, P.J. & Ryland, J.S. (ed.) 1995b. Handbook of the marine fauna of North-West Europe. Oxford: Oxford University Press.
Howson, C.M. & Picton, B.E., 1997. The species directory of the marine fauna and flora of the British Isles and surrounding seas. Belfast: Ulster Museum. [Ulster Museum publication, no. 276.]
Picton, B.E. & Costello, M.J., 1998. BioMar biotope viewer: a guide to marine habitats, fauna and flora of Britain and Ireland. [CD-ROM] Environmental Sciences Unit, Trinity College, Dublin.
Svoboda, A. & Cornelius, P. F. S., 1991. The European and Mediterranean species of Aglaophenia (Cnidaria: Hydrozoa). Zoologische Verhandelingen, 274, 72 pp.
Centre for Environmental Data and Recording, 2018. Ulster Museum Marine Surveys of Northern Ireland Coastal Waters. Occurrence dataset https://www.nmni.com/CEDaR/CEDaR-Centre-for-Environmental-Data-and-Recording.aspx accessed via NBNAtlas.org on 2018-09-25.
Manx Biological Recording Partnership, 2018. Isle of Man historical wildlife records 1990 to 1994. Occurrence dataset:https://doi.org/10.15468/aru16v accessed via GBIF.org on 2018-10-01.
NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.
OBIS (Ocean Biodiversity Information System), 2022. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2022-12-10
This review can be cited as:
Last Updated: 12/09/2007