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Distribution ( Inglês )

fornecido por Echinoderms of Panama

Buenaventura Cove, Portobelo on the Caribbean coast of Panama is the type locality of this species. In Panama this species has also been collected from Galeta Island (USNM E 12966, USNM E 36430, depth range 3 to 5 m), La Doncella, Del Padre Island (USNM 1011525; Centroid Latitude: 9.5800, Centroid Longitude: -79.6700), and North of Maria Soto River (USNM 1115006; Centroid Latitude: 9.5267, Centroid Longitude: -79.6667).

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Echinoderms of Panama

References and links ( Inglês )

fornecido por Echinoderms of Panama

Chesher, R. H. 1968. Lytechinus williamsi, a new sea urchin from Panama. Breviora, Museum of Comparative Zoology 305, 1-13.

GenBank

The Echinoid Directory

World Echinoidea Database

LSID urn:lsid:marinespecies.org:taxname:422489


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Echinoderms of Panama

Type material ( Inglês )

fornecido por Echinoderms of Panama

Holotype: USNM E 10855

Paratype: USNM E 10856

Type locality: Buenaventura Cove, Portobelo, Caribbean Coast, Panama, depth 10 m.

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Echinoderms of Panama

Comprehensive Description ( Inglês )

fornecido por Smithsonian Contributions to Zoology
Lytechinus williamsi Chesher

Lytechinus williamsi Chesher, 1968b, figs. 1–4.

Frederick Hotchkiss collected one specimen of this species (subsequently identified by David L. Pawson) living in a crevice in coral on the outer fore-reef on the edge of the outer trough on the transect approximately 510 meters from its western end.
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citação bibliográfica
Kier, Porter M. 1975. "The echinoids of Carrie Bow Cay, Belize." Smithsonian Contributions to Zoology. 1-45. https://doi.org/10.5479/si.00810282.206

Lytechinus williamsi ( Inglês )

fornecido por wikipedia EN

Lytechinus williamsi, the jewel urchin, is a sea urchin in the family Toxopneustidae. It occurs on shallow reefs off the coasts of Panama, Belize, the Florida Keys and Jamaica.

Description

The jewel urchin grows to a diameter of about 3 to 5 centimetres (1.2 to 2.0 in) and has spines up to 3 centimetres (1.2 in) long. Many of them are shorter than this and provide a dense covering. The test is usually a pale brown colour with a red or dark brown stripe along the joints of the main interambulacral plates. The spines are either deep green or white and have a ridge running along one side of each, a fact that distinguishes this species from the very similar Lytechinus variegatus. In between the spines are large purple tweezer shaped structures called pedicellariae which are also distinctive, L. variegatus having white pedicellariae.[2][3]

Distribution and habitat

The jewel urchin is the commonest sea urchin on some coral reefs in the Caribbean Sea but it seems to be restricted to the coasts of Panama, Belize, the Florida Keys and Jamaica at depths between 5 and 90 metres (16 and 295 ft). It is found in crevices in rocks and coral reefs and on the surfaces of other organisms such as table corals, Acropora spp., and lettuce corals in the family Agariciidae. It does not feed on these corals.[2][4]

Biology

The jewel urchin does not protect itself from the sun by covering its upper surface with bits of seagrass and shell but instead, tends to hide in cracks during the day and emerge to feed at night.[2][3] Like other sea urchins, the diet is mainly algae which are scraped off the surface of rocks or chewed by the rasping mouthparts situated on the oral (under) surface of the animal.[5]

In Panama the jewel urchin's spawning period occurs annually in the rainy season. It occurs over an extended period and does not seem to be linked with phases of the moon as is the case in some other species of sea urchin.[4]

References

  1. ^ Kroh, A. (2010). Kroh A, Mooi R (eds.). "Lytechinus williamsi Chesher, 1968". World Echinoidea Database. World Register of Marine Species. Retrieved 2012-09-03.
  2. ^ a b c Colin, Patrick L. (1978). Marine Invertebrates and Plants of the Living Reef. T.F.H. Publications. p. 418. ISBN 0-86622-875-6.
  3. ^ a b "Jewel urchin: (Lytechinus williamsi)". Interactive Guide to Caribbean Diving. Marine Species Identification Portal. Retrieved 2012-09-03.
  4. ^ a b Weintraub, Lexi. "Lytechinus williamsi Chesher, 1968". Bocas del Toro: Species Database. Smithsonian Tropical Research Institute. Retrieved 2012-09-03.
  5. ^ Dorit, R. L.; Walker, W. F.; Barnes, R. D. (1991). Zoology. Saunders College Publishing. p. 786. ISBN 0-03-030504-7.
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Lytechinus williamsi: Brief Summary ( Inglês )

fornecido por wikipedia EN

Lytechinus williamsi, the jewel urchin, is a sea urchin in the family Toxopneustidae. It occurs on shallow reefs off the coasts of Panama, Belize, the Florida Keys and Jamaica.

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Lytechinus williamsi ( Francês )

fornecido por wikipedia FR

Lytechinus williamsi est une espèce d’oursins tropical de la famille des Toxopneustidae.

Description

C'est un oursin régulier de forme arrondie et bombée, pouvant atteindre 5 cm de diamètre, avec des piquants de 3 cm de long[2]. Ses radioles (piquants) sont nombreuses, pointues, densément réparties mais courtes, sont ornées de crêtes caractéristiques, et elles laissent parfois apparaître les sutures radiales entre les aires du test, rehaussées de rouge. Ces oursins sont d'une couleur variable, usuellement claire (parfois rosâtre), et les piquants sont d'une couleur plus marquée, qui peut aller du blanc au vert pomme[2]. On le distingue surtout des autres espèces de son genre (comme Lytechinus variegatus) par ses pédicellaires terminés par des globes colorées de pourpre sombre[3].

Habitat et répartition

Cet oursin vit se rencontre sur les récifs entre 5 et 25 mètres de profondeur[2] (parfois jusqu'à 92 m[3]).

On le trouve dans tout le Golfe du Mexique[2],[4], mais il est plus abondant à Panama, Belize et aux Keys (Floride)[3].

Écologie et comportement

La reproduction est gonochorique, et mâles et femelles relâchent leurs gamètes en même temps en pleine eau, où œufs puis larves vont évoluer parmi le plancton pendant quelques semaines avant de se fixer.

Cet oursin est de mœurs nocturnes, et il passe généralement la journée dissimulé dans des anfractuosités[2]. Contrairement à certains de ses cousins, il ne porte jamais volontairement des objets au-dessus de lui pour se protéger.

Références taxinomiques

Notes et références

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wikipedia FR

Lytechinus williamsi: Brief Summary ( Francês )

fornecido por wikipedia FR

Lytechinus williamsi est une espèce d’oursins tropical de la famille des Toxopneustidae.

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Lytechinus williamsi ( Neerlandês; Flamengo )

fornecido por wikipedia NL

Lytechinus williamsi is een zee-egel uit de familie Toxopneustidae.

De wetenschappelijke naam van de soort werd in 1968 gepubliceerd door Chesher.

Bronnen, noten en/of referenties
Geplaatst op:
15-12-2011
Dit artikel is een beginnetje over biologie. U wordt uitgenodigd om op bewerken te klikken om uw kennis aan dit artikel toe te voegen. Beginnetje
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Lytechinus williamsi ( Sueco )

fornecido por wikipedia SV


Lytechinus williamsi[1] är en sjöborreart. Lytechinus williamsi ingår i släktet Lytechinus, och familjen Toxopneustidae.[2][3] Inga underarter finns listade.[2]


Källor

  1. ^ (1996) , database, NODC Taxonomic Code
  2. ^ [a b] Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (red.) (28 april 2011). ”Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist.”. Species 2000: Reading, UK. http://www.catalogueoflife.org/annual-checklist/2011/search/all/key/lytechinus+williamsi/match/1. Läst 24 september 2012.
  3. ^ ITIS: The Integrated Taxonomic Information System. Orrell T. (custodian), 2011-04-26


Morpho rhetenor rhetenor MHNT dos.jpg Denna artikel om sjöborrar saknar väsentlig information. Du kan hjälpa till genom att tillföra sådan.
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Lytechinus williamsi: Brief Summary ( Sueco )

fornecido por wikipedia SV


Lytechinus williamsi är en sjöborreart. Lytechinus williamsi ingår i släktet Lytechinus, och familjen Toxopneustidae. Inga underarter finns listade.


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Wikipedia författare och redaktörer
original
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wikipedia SV

Distribution ( Inglês )

fornecido por World Register of Marine Species
Buena Ventura, Panama (Atlantic)

Referência

10. Baral, N., Tamang, B. and Timilsina, N. (2002) Status of Bengal florican Houbaropsis bengalensis in Royal Bardia National Park, Nepal. Journal Bombay Natural History Society, 99 (3): 413 - 417.

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WoRMS Editorial Board
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Andreas Kroh [email]