33:
300:, Scotland this species has become much more common in the last few decades of the 20th century. In the 1960s there was an average of about 50 individuals per square metre in suitable habitats, in the 1970s this had increased to over 300 per square metre. It is suggested that this build up in numbers was mainly due to the discharge of effluent from pulp mills. An increase in nutrients led to an increase in the number of plankton and, as suspension feeders, the brittle stars benefited from the increased food supply. The removal of organic particles by the brittle stars may have reduced the consequences of increased
46:
242:
has a central disc and five slender arms and is pinkish or greyish brown. The disc is up to 11 mm (0.4 in) in diameter and the arms up to 88 mm (3 in) long. The dorsal surface of the disc is covered with scales, larger in the middle and smaller towards the margin. There are a pair
266:
buries itself in the sediment with the disc at a depth of about 5 centimetres (2.0 in). It extends one or two arms above the sediment to gather food particles which are then transferred along its arm to its mouth. It is often found in the same locations as the heart urchin
254:
is found in the northeastern
Atlantic Ocean, the North Sea and the Mediterranean Sea. Its range extends from western Norway to the Azores and the west coast of North Africa. It is found on the seabed on sand or muddy sand at depths down to about 1,000 metres (3,300 ft).
279:
becomes sexually mature at about four years of age and may live for ten years. The gonads grow in size over the winter and spring and broadcast spawning takes place in late summer and early autumn. The larvae drift with the current and settle on the seabed and undergo
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during the period 1958 to 1964, all the individuals were large and there was no sign of juveniles. Then in 1965 a large number of young individuals joined the population, demonstrating that episodic recruitment is a feature of this brittle star.
243:
of separate radial shields near the attachment of each of the arms. The arms are elongated and are composed of many segments with joints between them, each segment bearing four to six pairs of conical spines.
211:. It is found in the northeastern Atlantic Ocean and adjoining seas to a depth of 1,000 metres (3,300 ft). It digs itself into the soft sediment of the seabed and raises its arms into the water above to
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273:, and where this happens it grows more slowly than it does elsewhere. This is thought to be because the urchin churns up the sediment excessively.
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at around eight days. This short larval period means that their potential to disperse is limited. In a population off the coast of
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484:"A boom–bust phylum? Ecological and evolutionary consequences of density variations in echinoderms"
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Uthicke, Sven; Schaffelke, Britta; Byrne, Maria (2009).
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227:in 1843, and was named for the Italian zoologist
326:Stöhr, Sabine (2014). Stöhr S, O'Hara T (eds.).
372:Macrobenthos of the North Sea - Echinodermata
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397:: Habitat preferences and distribution"
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374:. Marine Species Identification Portal
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362:de Kluijver, M. J.; Ingalsuo, S. S.
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340:World Register of Marine Species
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1:
455:: Reproduction and longevity"
759:Taxa named by Edward Forbes
775:
336:World Ophiuroidea database
223:by the British naturalist
754:Animals described in 1843
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41:Scientific classification
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457:. MarLIN. Archived from
428:. MarLIN. Archived from
399:. MarLIN. Archived from
247:Distribution and habitat
16:Species of brittle star
488:Ecological Monographs
304:for other organisms.
229:Stefano Delle Chiaje
270:Brissopsis lyrifera
426:: General biology"
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518:Taxon identifiers
501:10.1890/07-2136.1
204:belonging to the
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330:Amphiura chiajei
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277:Amphiura chiajei
264:Amphiura chiajei
252:Amphiura chiajei
240:Amphiura chiajei
200:is a species of
197:Amphiura chiajei
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25:Amphiura chiajei
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221:first described
213:suspension feed
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132:A. chiajei
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461:on 2014-12-05
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332:Forbes, 1843"
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282:metamorphosis
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231:(1794–1860).
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225:Edward Forbes
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141:Binomial name
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463:. Retrieved
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202:brittle star
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186:Tomasi, 1967
183:A. rancureli
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178:Forbes, 1843
175:A. florifera
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24:
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749:Amphiuridae
708:SeaLifeBase
630:iNaturalist
550:Wikispecies
298:Loch Linnhe
235:Description
209:Amphiuridae
108:Amphiuridae
88:Ophiuroidea
743:Categories
465:2014-11-27
436:2014-11-27
407:2014-11-27
378:2014-11-27
345:2014-11-27
308:References
219:. It was
126:Species:
98:Ophiurida
64:Kingdom:
58:Eukaryota
648:10199475
541:Q2509855
535:Wikidata
294:Loch Eil
217:plankton
166:Synonyms
119:Amphiura
104:Family:
74:Phylum:
68:Animalia
54:Domain:
622:2277897
494:: 324.
259:Ecology
114:Genus:
94:Order:
84:Class:
726:125073
700:125073
661:157727
635:354827
596:607606
570:218700
206:family
159:, 1843
157:Forbes
721:WoRMS
713:49878
687:82379
643:IRMNG
609:45073
604:EUNIS
695:OBIS
682:NCBI
656:ITIS
617:GBIF
583:D6N7
565:BOLD
296:and
669:NBN
591:EoL
578:CoL
496:doi
292:In
215:on
745::
723::
710::
697::
684::
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632::
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492:79
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486:.
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
