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Image of brittlestar

Brittlestar

Amphiura filiformis (O. F. Müller 1776)

Biology

provided by World Register of Marine Species
This species is luminescent emitting a blue light.
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bibliographic citation
Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Mallefet, J. (2009). Echinoderm bioluminescence: Why, when and how do so many ophiuroids glow?. <em>In: Meyer-Rochow, V. B. (eds). Bioluminescence in Focus - A Collection of Illuminating Essays, Research Signpost, Trivandrum, India.</em> 1-17.
contributor
Sabine Stöhr [email]

Biology

provided by World Register of Marine Species
The larvae of A. filiformis are found throughout the summer from July to October. A. filiformis belongs to the long-lived species with relatively fast growth in the juvenile stage followed by a much slower growing adult phase. Its life span may be up to 20 years (Mortensen, 1927; Buchanan, 1964; O'Conner et al., 1983; Gage, 1990). A. filiformis burrows about 5 cm into the substrate. The species must reach a certain size to be able to burrow down into the sediment for it must, using its serpentine arms, keep contact with the sediment surface (O'Conner et al., 1983; Gage, 1990). The arms of the brittle star have three main functions: ventilation and respiration, transport of sediment and waste materials out of the burrow, and collection and transport of food (Ockelmann & Muus, 1978). A. filiformis is a suspension feeder, collecting mixed micro-plankton, resuspended bottom material and detritus. The animals extend their arms into the surrounding water, filtering part
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cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Mallefet, J. (2009). Echinoderm bioluminescence: Why, when and how do so many ophiuroids glow?. <em>In: Meyer-Rochow, V. B. (eds). Bioluminescence in Focus - A Collection of Illuminating Essays, Research Signpost, Trivandrum, India.</em> 1-17.
contributor
[email]

Breeding

provided by World Register of Marine Species
Ophiopluteus larva. Summer
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copyright
WoRMS Editorial Board
bibliographic citation
Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Mallefet, J. (2009). Echinoderm bioluminescence: Why, when and how do so many ophiuroids glow?. <em>In: Meyer-Rochow, V. B. (eds). Bioluminescence in Focus - A Collection of Illuminating Essays, Research Signpost, Trivandrum, India.</em> 1-17.
contributor
Camba Reu, Cibran [email]

Distribution

provided by World Register of Marine Species
A. filiformis is very abundant in the area of the Oyster Ground, north of the 30 m isobath, with the highest biomass in the western part of the Frisian Front area. The species is not present in the sandy Southern Bight and is scarce at the Dogger Bank. In the Dutch sector of the North Sea A. filiformis lives in very fine sand with a mean mud content of 11 %. This is in agreement with other investigations, which found high-density populations in muddy deposits (Buchanan, 1964; Woodley,1975; O'Conner et al., 1983; Gage, 1990; Hayward & Ryland, 1990).
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cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Mallefet, J. (2009). Echinoderm bioluminescence: Why, when and how do so many ophiuroids glow?. <em>In: Meyer-Rochow, V. B. (eds). Bioluminescence in Focus - A Collection of Illuminating Essays, Research Signpost, Trivandrum, India.</em> 1-17.
contributor
[email]

Distribution

provided by World Register of Marine Species
From 5 to more than 200 m depth, in muddy sand or mud, all round the British Isles, except, possibly, the southeast
license
cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Mallefet, J. (2009). Echinoderm bioluminescence: Why, when and how do so many ophiuroids glow?. <em>In: Meyer-Rochow, V. B. (eds). Bioluminescence in Focus - A Collection of Illuminating Essays, Research Signpost, Trivandrum, India.</em> 1-17.
contributor
Camba Reu, Cibran [email]

Morphology

provided by World Register of Marine Species
The disk of A. filiformis is covered with scales on the dorsal side only, leaving the ventral side naked. The diameter of disk can be up to 8-10 mm. The long, fine arms are about ten times longer than the diameter of the disk. lts colour is reddish- or greyish-brown (Mortensen, 1927; Southward, 1972; Hayward & Ryland, 1990).
license
cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Southward, E.C.; Campbell, A.C. (2006). [Echinoderms: keys and notes for the identification of British species]. <i>Synopses of the British fauna (new series)</i>, 56. Field Studies Council: Shrewsbury, UK. ISBN 1-85153-269-2. 272 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp. Mallefet, J. (2009). Echinoderm bioluminescence: Why, when and how do so many ophiuroids glow?. <em>In: Meyer-Rochow, V. B. (eds). Bioluminescence in Focus - A Collection of Illuminating Essays, Research Signpost, Trivandrum, India.</em> 1-17.
contributor
[email]