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337:), submerged in 20-cm deep aquaria responded negatively to sunlight and UV light and succumbed following extended exposure to UV light. However, studies in wave tanks with or without light showed they masked with shell material and aggregated in groups when exposed to surge activity. Masked and/or aggregated urchins were able to remain stable on the sand whereas unmasked individuals rolled around helplessly on the sand.
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It is sometimes found in aggregations of closely packed individuals. This may be linked to breeding activities but at other times it has no known cause. Breeding takes place at various times of the year in different parts of its range. In
Bermuda the spawning period is short and seems to be related
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The green sea urchin has a globular test (shell) densely covered in spines and can reach a diameter of around 11 centimetres (4.3 in). The test may be purple, green or dull red, blotched with white. The majority of the spines are short but there are a few longer primary spines. The spines vary
263:
in colour, sometimes being one colour at the base and a different colour at the tip. Green test with green spines or green test with white spines are the most common combinations found in the
Caribbean. In between the spines are
340:
The green sea urchin has a structure called an
Aristotle's lantern surrounding its mouth on its oral (under) surface. This has five teeth that can be used to rasp surfaces. It is largely herbivorous, feeding on the seagrass
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shell on its aboral (upper) surface, holding them in place with its tube feet. It is thought that the urchin is photo-sensitive and that these pieces of debris may provide some protection from strong sunlight and
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is found from North
Carolina southwards to the Caribbean Sea and Gulf of Mexico. It is found on rocky reefs, on or under rocks, on sandy or muddy
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The green sea urchin occurs in tropical waters in the western
Atlantic Ocean. The subspecies occupy different geographical areas.
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Lees, Dennis C. & Carter, Gerald A. (1972). "The covering response to surge, sunlight, and ultraviolet light in
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occurs in the
Caribbean Sea, southern Florida, the Yucatán peninsula and northern Brazil but not Barbados while
347:. Its tube feet and spines also play a role in feeding, catching and holding bits of debris that float past.
267:, pincer like structures. These are white which distinguishes the green sea urchin from the rather similar
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in the clear shallow waters it favours. While subsequent research confirmed that a different species,
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is the model organism database for the painted urchin and a number of other echinoderms.
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to the phase of the moon. Eggs and sperm are liberated into the
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that can be found in the warm waters of the western
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316:The green sea urchin is often found with pieces of
466:Marine Invertebrates and Plants of the Living Reef
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363:and fertilisation is external. The larvae are
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395:Kroh, A. (2010). Kroh A, Mooi R (eds.).
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241:Lytechinus variegatus plurituberculatus
439:. Marine Species Identification Portal
437:Interactive Guide to Caribbean Diving
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320:, bits of seagrass and fragments of
844:Taxa named by Jean-Baptiste Lamarck
25:
470:. T.F.H. Publications. pp.
409:World Register of Marine Species
249:Lytechinus variegatus variegatus
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510:Marine Invertebrates of Bermuda
273:which has purple pedicellaria.
224:Lytechinus variegatus carolinus
277:Online Model Organism Database
232:Lytechinus variegatus pallidus
1:
829:Fauna of the Atlantic Ocean
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462:Colin, Patrick L. (1978).
294:L. v. variegatus
839:Animals described in 1816
405:World Echinoidea Database
298:L. v. carolinus
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52:Scientific classification
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41:
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288:Distribution and habitat
375:into juvenile urchins.
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183:, commonly called the
834:Echinoderms of Brazil
760:Paleobiology Database
622:Lytechinus variegatus
593:Lytechinus variegatus
575:on Sealife Collection
573:Lytechinus variegatus
504:Lytechinus variegatus
431:Lytechinus variegatus
399:Lytechinus variegatus
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189:variegated sea urchin
180:Lytechinus variegatus
161:Lytechinus variegatus
36:Lytechinus variegatus
27:Species of sea urchin
429:"Variegated urchin (
270:Lytechinus williamsi
531:Lytechinus anamesus
502:"Green Sea Urchin (
235:H. L. Clark, 1925
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354:Sea urchin embryos
227:A. Agassiz, 1863
143:L. variegatus
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747:Open Tree of Life
585:Taxon identifiers
367:and are known as
327:ultraviolet light
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18:Variegated urchin
16:(Redirected from
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541:(6): 1127–1133.
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401:(Lamarck, 1816)"
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306:seagrass meadows
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185:green sea urchin
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566:External links
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152:Binomial name
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513:. Retrieved
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441:. Retrieved
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361:water column
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773:SeaLifeBase
682:iNaturalist
335:L. anamesus
258:Description
109:Camarodonta
824:Lytechinus
818:Categories
571:Photos of
515:2012-09-03
443:2012-09-03
414:2019-01-21
379:References
365:planktonic
302:substrates
282:Echinobase
217:subspecies
211:Subspecies
197:sea urchin
130:Lytechinus
99:Echinoidea
344:Thalassia
331:L. pictus
137:Species:
75:Kingdom:
69:Eukaryota
700:10895803
608:Q2302585
602:Wikidata
115:Family:
85:Phylum:
79:Animalia
65:Domain:
674:2278884
555:1935425
535:Ecology
472:417–418
322:mollusc
312:Biology
304:and in
193:species
191:, is a
187:or the
171:, 1816)
169:Lamarck
125:Genus:
105:Order:
95:Class:
801:367850
788:594081
785:uBio:
765:151225
752:561256
739:367850
713:157921
687:120069
661:599644
635:148893
553:
478:
796:WoRMS
778:49984
695:IRMNG
648:3WVCB
551:JSTOR
318:algae
734:OBIS
726:7654
721:NCBI
708:ITIS
669:GBIF
630:BOLD
476:ISBN
203:and
656:EoL
643:CoL
617:ADW
543:doi
533:".
333:(=
195:of
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506:)"
490:^
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435:.
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407:.
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387:^
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397:"
239:†
167:(
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
