Swiftia pallida usually has a single main stem arising from a narrow base and is sparsely branched. Its normal height is about 80 mm (3 in) but it can grow to 200 mm (8 in). The polyps are mostly arranged alternately, but somewhat irregularly, on either side of the stem and branches. Each polyp is supported by eight spindle-shaped sclerites, spiny skeletal elements, which run from the stem or branch to the bases of the eight tentacles. In the north of its range, this species is usually white or pale grey, but in the Mediterranean it may be pink or red.[2] This sea fan resembles pale varieties of the more common Swiftia rosea but is less bushy with fewer branches.[3]
Distribution and habitat
Swiftia pallida is native to the northeast Atlantic Ocean, the Mediterranean Sea,[1] the Bay of Biscay, Madeira and Morocco. In the northern part of this range its depth range is between 15 and 60 metres (49 and 197 ft) but in the southern part it occurs in very deep water,[4] possibly as deep as 2,380 metres (7,810 ft).[5] This sea fan also occurs in deep water on the continental shelf off the Atlantic coast of North America.[6] It is found on rocks in tide-swept areas that are sheltered from excessive wave action.[7] It often occurs in areas where a layer of sediment covers the rocks,[3] or on large pebbles lying on a silty or broken shell seabed.[5]
Ecology
The sea fan anemone (Amphianthus dohrnii) seems to live exclusively on sea fans. In the northern part of its range it is associated with Swiftia pallida, and in the southern part with the pink sea fan (Eunicella verrucosa).[5] The rate of growth of Swiftia pallida is unknown but may be similar to that of Eunicella verrucosa, about 1 cm (0.4 in) per year.[5]
^ abcde Kluijver, M.J.; Ingalsuo,S.S. "Swiftia pallida". Macrobenthos of the North Sea. Marine Species Identification Portal. Retrieved 2014-12-13.
^ abMoen, Frank. "Swiftia pallida" (in Norwegian). Retrieved 2014-12-13.
^Wilding, Catherine; Wilson, Emily (2009). "Northern sea fan - Swiftia pallida - Habitat preferences and distribution". MarLIN. Retrieved 2014-12-13.
^ abcdWilding, Catherine; Wilson, Emily (2009). "Northern sea fan - Swiftia pallida - General biology". MarLIN. Retrieved 2014-12-13.
^Michael P. Lesser (28 September 2011). Advances in Marine Biology. Academic Press. p. 57. ISBN978-0-12-385530-5.
^"Amphianthus dohrnii". Marine Wildlife News 2000. British Marine Life Study Society. 2000. Retrieved 2014-12-13.
April 29, 2023
swiftia, pallida, species, gorgonian, type, octocoral, family, plexauridae, sometimes, known, northern, time, considered, subspecies, swiftia, rosea, scientific, classificationkingdom, animaliaphylum, cnidariaclass, octocoralliaorder, alcyonaceafamily, plexaur. Swiftia pallida is a species of gorgonian type octocoral in the family Plexauridae sometimes known as the northern sea fan At one time it was considered to be a subspecies of Swiftia rosea 2 Swiftia pallidaScientific classificationKingdom AnimaliaPhylum CnidariaClass OctocoralliaOrder AlcyonaceaFamily PlexauridaeGenus SwiftiaSpecies S pallidaBinomial nameSwiftia pallidaMadsen 1970 1 Synonyms 2 Gorgonia pinnataJohnston 1847 Swiftia rosea ssp pallidaMadsen 1970 Contents 1 Description 2 Distribution and habitat 3 Ecology 4 ReferencesDescription EditSwiftia pallida usually has a single main stem arising from a narrow base and is sparsely branched Its normal height is about 80 mm 3 in but it can grow to 200 mm 8 in The polyps are mostly arranged alternately but somewhat irregularly on either side of the stem and branches Each polyp is supported by eight spindle shaped sclerites spiny skeletal elements which run from the stem or branch to the bases of the eight tentacles In the north of its range this species is usually white or pale grey but in the Mediterranean it may be pink or red 2 This sea fan resembles pale varieties of the more common Swiftia rosea but is less bushy with fewer branches 3 Distribution and habitat EditSwiftia pallida is native to the northeast Atlantic Ocean the Mediterranean Sea 1 the Bay of Biscay Madeira and Morocco In the northern part of this range its depth range is between 15 and 60 metres 49 and 197 ft but in the southern part it occurs in very deep water 4 possibly as deep as 2 380 metres 7 810 ft 5 This sea fan also occurs in deep water on the continental shelf off the Atlantic coast of North America 6 It is found on rocks in tide swept areas that are sheltered from excessive wave action 7 It often occurs in areas where a layer of sediment covers the rocks 3 or on large pebbles lying on a silty or broken shell seabed 5 Ecology EditThe sea fan anemone Amphianthus dohrnii seems to live exclusively on sea fans In the northern part of its range it is associated with Swiftia pallida and in the southern part with the pink sea fan Eunicella verrucosa 5 The rate of growth of Swiftia pallida is unknown but may be similar to that of Eunicella verrucosa about 1 cm 0 4 in per year 5 References Edit a b van Ofwegen Leen 2014 Swiftia pallida Madsen 1970 WoRMS World Register of Marine Species Retrieved 2014 12 13 a b c de Kluijver M J Ingalsuo S S Swiftia pallida Macrobenthos of the North Sea Marine Species Identification Portal Retrieved 2014 12 13 a b Moen Frank Swiftia pallida in Norwegian Retrieved 2014 12 13 Wilding Catherine Wilson Emily 2009 Northern sea fan Swiftia pallida Habitat preferences and distribution MarLIN Retrieved 2014 12 13 a b c d Wilding Catherine Wilson Emily 2009 Northern sea fan Swiftia pallida General biology MarLIN Retrieved 2014 12 13 Michael P Lesser 28 September 2011 Advances in Marine Biology Academic Press p 57 ISBN 978 0 12 385530 5 Amphianthus dohrnii Marine Wildlife News 2000 British Marine Life Study Society 2000 Retrieved 2014 12 13 Retrieved from https en wikipedia org w index php title Swiftia pallida amp oldid 1046071052, wikipedia, wiki, book, books, library,
