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Dermasterias imbricata (Grube 1857)

Look Alikes ( Inglês )

fornecido por Invertebrates of the Salish Sea
How to Distinguish from Similar Species: Pteraster tesselatus does not have a visible madreporite and secretes copious quantities of slime. Asterina miniata and Mediaster aequalis have clearly visible interlocking ossicles on the aboral surface.
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Invertebrates of the Salish Sea

Comprehensive Description ( Inglês )

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Biology/Natural History: Prey include diatoms, sponges, bryozoans, sea pens, anemones, sea cucumbers, sea urchins, and chitons, ascidians, and fish eggs. Anemones are said to be one of its major prey items. It usually swallows its prey whole and digests them internally. The swimming anemone Stomphia sp has a strong escape response from this species; as does the purple urchin Strongylocentrotus purpuratus. Stomphia swims away, while S. purpuratus pulls in its tube feet, depresses its spines, and extends its pedicellariae; then races away. The scaleworm Arctonoe vittata is a common commensal, and the worm and the seastar are mutually attracted to one another. A parasitic barnacle Dendrogaster sp may be found inside. In Wasington, spawning is from April to August. Females release yellow eggs which are fertilized in the water.
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Invertebrates of the Salish Sea

Habitat ( Inglês )

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Mostly on rocks, can also be found on sand or mud. Seems to prefer at least partially sheltered areas.
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Distribution ( Inglês )

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Geographical Range: Sitka, Alaska to Sacramento Reef, Baja California, Mexico; more common in the northern half of its range
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Habitat ( Inglês )

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Depth Range: Intertidal to 90 m
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Invertebrates of the Salish Sea

Comprehensive Description ( Inglês )

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This star has a broad central disk and 5 short rays which taper broadly to the central disk. The rays are not bordered by marginal plates. The entire aboral surface is smooth and slippery, reddish brown with blue-gray patches or reticulations, and without spines. The thickness is about 1/3 the diameter, the madreporite can be seen. Smells distinctive--almost like garlic or burned gunpowder. Arm radius to 15 cm.
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Dermasterias imbricata ( Alemão )

fornecido por wikipedia DE
 src=
Detailansicht von Dermasterias imbricata

Dermasterias imbricata ist eine Art der Seesterne aus der Ordnung der Klappensterne (Valvatida), die an der nordamerikanischen Pazifikküste heimisch ist und sich als Allesfresser unter anderem von Algen und sessilen Tieren wie z. B. Seeanemonen ernährt.

Merkmale

Dermasterias imbricata hat eine breite Mittelscheibe und fünf plumpe, kurze Arme, die sich von einer breiten Basis an der Mittelscheibe nach außen schnell verjüngen. An der Unterseite der Arme sitzen zwei Reihen von Saugfüßchen ohne begrenzende Seitenplatten. Die glatte, samtartige Oberseite weist keine Pedicellarien auf und ist mit einem netzartigen rötlich-braunen Muster überzogen, das oft durch gräulich-blaue Flecken unterbrochen ist. Die Madreporenplatte ist deutlich sichtbar. Der Seestern erreicht einen Durchmesser von 25 cm und hat einen charakteristischen Geruch nach Knoblauch und Schwefel.

Fortpflanzungszyklus

Vor der Küste von Washington kommen Weibchen und Männchen zwischen April und August in Gruppen zusammen und entlassen ihre Keimzellen ins freie Meerwasser, wo die Eizellen von den Spermien befruchtet werden. Die gelben Eier entwickeln sich zu frei schwimmenden Bipinnaria-Larven, die sich als Zooplankton von Phytoplankton ernähren. Im darauf folgenden Stadium der Brachiolaria heften sich die Larven an den Meeresgrund und metamorphosieren zu kleinen Seesternen.

Verbreitung und Vorkommen

Dermasterias imbricata lebt an der nordamerikanischen Pazifikküste vom mittleren Alaska bis zum nördlichen Mexiko, wo er in der Uferzone und bis in 100 m Tiefe zu finden ist.

Ernährung

Dermasterias imbricata ernährt sich als Allesfresser sowohl von Algen als auch einer Reihe von Kleintieren wie Seeanemonen, Hydrozoen, Seefedern, koloniebildenden Seescheiden, Moostierchen und Schwämmen, bisweilen auch Seegurken, Seeigeln und Seesternen. Mit einer Höchstgeschwindigkeit von etwa 15 cm/min kann dieser Seestern nur sehr langsame oder sessile Tiere erbeuten.

Feinde

Zu den Hauptfeinden von Dermasterias imbricata gehört der Sonnenstern Solaster dawsoni, der wesentlich schneller kriechen kann und für den Dermasterias imbricata eine Hauptbeute ist.

Literatur

  • Howard M. Feder: Asteroidea, in: Robert Hugh Morris, Donald Putnam Abbott, Eugene Clinton Haderlie: Intertidal Invertebrates of California. S. 117–135, hier S. 119f., 8.3: Dermasterias imbricata (Grube, 1857). Stanford University Press, 1st ed., Stanford (CA, USA) 1980.
  • Edward Flanders Ricketts, Jack Calvin, Joel Walker Hedgpeth, David W. Phillips: Between Pacific Tides. Fifth Edition. Stanford University Press, Stanford (California) 1985. S. 285 (Dermasterias imbricata).

Weblinks

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Dermasterias imbricata: Brief Summary ( Alemão )

fornecido por wikipedia DE
 src= Detailansicht von Dermasterias imbricata

Dermasterias imbricata ist eine Art der Seesterne aus der Ordnung der Klappensterne (Valvatida), die an der nordamerikanischen Pazifikküste heimisch ist und sich als Allesfresser unter anderem von Algen und sessilen Tieren wie z. B. Seeanemonen ernährt.

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wikipedia DE

Leather star ( Inglês )

fornecido por wikipedia EN

The leather star (Dermasterias imbricata) is a sea star in the family Asteropseidae found at depths to 100 m (328 ft) off the western seaboard of North America. It was first described to science by Adolph Eduard Grube in 1857.[1]

Description

The leather star has a broad central disc and five plump, short arms which taper broadly from the central disc. The arms have two rows of tube feet and no bordering marginal plates. The upper, aboral, surface is smooth and velvety, made more so by the absence of spines and a light layer of mucous.[2] It is covered with a reticulated pattern in reddish-brown, often with patches of greyish-blue. No pedicellariae are present, but the madreporite can be seen. This starfish can grow to about 30 centimetres (12 in) in diameter[3] and has a distinctive smell that resembles garlic and sulphur.[4][5]

Distribution and habitat

The range of the leather star includes the western seaboard of North America from Cook Inlet, Alaska[2] to northern Mexico. It occurs in Puget Sound.[6] It lives in the intertidal zone and in deeper water down to depths of about 100 metres (330 ft).[4] It is found on rocky bottoms and occasionally sandy seabeds.[7]

Biology

D. imbricata, offshore Carmel, California

The leather star feeds on algae and a range of invertebrates, including other asteroids, bryozoans, sea urchins, sponges, sea cucumbers, hydroids, sea pens, and colonial tunicates.[4]

It is in turn preyed on by the morning sun star (Solaster dawsoni). In its attempts to evade this voracious predator, it crawls away at a maximum speed of 15 cm/min, but this is too slow, and leather stars make up 50% of the diet of morning sun stars.[8]

Off the Washington coast, spawning is from April to August. The females release yellow eggs which are fertilized in the water column. The larvae then become part of the zooplankton.[5]

The leather star sometimes lives symbiotically with the scaleworm Arctonoe vittata. The worm also associates with various other marine invertebrates, but if separated from its host, will search out another member of the same species. The worm may nip off the heads of small tube-dwelling polychaetes as the starfish moves around, but is not harmed by its host.[9]

The parasitic barnacle genus Dendrogaster is sometimes an endoparasite of the leather star.[5]

Wikimedia Commons has media related to Dermasterias imbricata.

References

  1. ^ Grube, Eduard (1857). "Beschreibungen neuer oder weniger bekannter Seesterne und Seeigel". Proceedings of the Academy (in German). 27: 6–9.
  2. ^ a b Center, Alaska Fisheries Science. "AFSC/RACE - Leather Sea Star, Dermasterias imbricata". www.afsc.noaa.gov. Retrieved 2020-01-02.
  3. ^ "Leather star • Dermasterias imbricata". Biodiversity of the Central Coast. Retrieved 2020-01-02.
  4. ^ a b c Marine Biodiversity of British Columbia Archived 2013-04-15 at archive.today
  5. ^ a b c Zipcode Zoo Archived 2012-09-02 at the Wayback Machine
  6. ^ "Dermasterias imbricata | Encyclopedia of Puget Sound". www.eopugetsound.org. Retrieved 2020-01-02.
  7. ^ "Dermasterias imbricata". inverts.wallawalla.edu. Retrieved 2020-01-02.
  8. ^ "Leather star: Dermasterias imbricata". Sea stars of the Pacific Northwest. 2011. Archived from the original on 2012-09-09. Retrieved 2012-09-22.
  9. ^ Arctonoe vittata Archived 2012-07-30 at the Wayback Machine
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wikipedia EN

Leather star: Brief Summary ( Inglês )

fornecido por wikipedia EN

The leather star (Dermasterias imbricata) is a sea star in the family Asteropseidae found at depths to 100 m (328 ft) off the western seaboard of North America. It was first described to science by Adolph Eduard Grube in 1857.

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Dermasterias imbricata ( Espanhol; Castelhano )

fornecido por wikipedia ES

Dermasterias imbricata es la única especie del género Dermasterias, un equinodermo asteroideo de la familia Asteropseidae.[1][2]​ Es una estrella de mar que habita el litoral del Pacífico de América del Norte.

 src=
Dermasterias imbricata (primer plano).

Referencias

  1. a b c Mah, Christopher (2018). «Dermasterias imbricata (Grube, 1857)». WoRMS. Consultado el 4 de marzo de 2018.
  2. «Dermasterias imbricata». Catalogue of Life (2010 Annual Checklist) (en inglés). Sistema Integrado de Información Taxonómica (ITIS).

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Dermasterias imbricata: Brief Summary ( Espanhol; Castelhano )

fornecido por wikipedia ES

Dermasterias imbricata es la única especie del género Dermasterias, un equinodermo asteroideo de la familia Asteropseidae.​​ Es una estrella de mar que habita el litoral del Pacífico de América del Norte.

 src= Dermasterias imbricata (primer plano).
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Dermasterias imbricata ( Francês )

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Dermasterias imbricata est une espèce d'étoile de mer de la famille des Asteropseidae.

Description

C'est une grosse étoile régulière et souple, pouvant mesurer jusqu'à 30 cm d'envergure[2]. Son disque central mou est rebondi et assez large, et ses bras courts et pointus. Elle est généralement bleu-gris, avec des papilles respiratoires rouge vif formant de grosses touffes parfois contiguës.

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Gros plan sur les papilles respiratoires.

Habitat et répartition

Cette étoile est commune sur les côtes ouest-américaines (Californie, Oregon, Canada)[3], de la surface à 90 m de profondeur[2].

Références taxinomiques

Notes et références

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Dermasterias imbricata: Brief Summary ( Francês )

fornecido por wikipedia FR

Dermasterias imbricata est une espèce d'étoile de mer de la famille des Asteropseidae.

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Dermasterias imbricata ( Neerlandês; Flamengo )

fornecido por wikipedia NL

Dermasterias imbricata is een zeester uit de familie Asteropseidae.

De wetenschappelijke naam van de soort werd in 1857 gepubliceerd door Adolph Eduard Grube.

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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Dermasterias imbricata ( Turco )

fornecido por wikipedia TR
Binominal adı Dermasterias imbricata
Grube, 1857[2] Sinonimler
  • Asteropsis imbricata Grube, 1857
  • Dermasterias inermis Perrier, 1875

[2]

Dış bağlantılar Commons-logo.svg Wikimedia Commons'ta Dermasterias imbricata ile ilgili çoklu ortam belgeleri bulunur. Wikispecies-logo.svg Wikispecies'te Dermasterias imbricata ile ilgili detaylı taksonomi bilgileri bulunur.

Dermasterias imbricata, Asteropseida familyasında monotipik Dermasterias cinsinde sınıflandırılan bir denizyıldızı türüdür. Alaska'dan Meksika'nın kuzeyine kadar olan bölgede 100 m. derinliğe kadar olan sularda yaşar.

Fiziksel özellikleri

D. imbricata denizyıldızının merkezi diski geniştir ve kısa tombul beş kolu vardır. Kollarda iki sıra tüp ayak bulunur ve marjinal kemikçikler yoktur. Pürüzsüz ve kadife gibi olan üst ya da aboral yüzleri kızıl ve kahve bir desenle kaplıdır ve çoğunlukla gri ve mavi lekeler bulunur. Pediselleri yoktur ama madreporit kolaylıkla görünür. Büyüklüğü 25 cm. çapına erişebilir ve sarımsak ile kükürt kokusuna benzeyen kendine has bir kokusu vardır.[3][4]

Notlar

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Dermasterias imbricata: Brief Summary ( Turco )

fornecido por wikipedia TR

Dermasterias imbricata, Asteropseida familyasında monotipik Dermasterias cinsinde sınıflandırılan bir denizyıldızı türüdür. Alaska'dan Meksika'nın kuzeyine kadar olan bölgede 100 m. derinliğe kadar olan sularda yaşar.

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가죽불가사리 ( Coreano )

fornecido por wikipedia 한국어 위키백과

가죽불가사리(영어: leather star)는 북미 서해안 수심 100 미터 이내에서 발견되는 불가사리 종이다. 1857년 아돌프 에두아르트 그루베기재했다.[1]

각주

  1. Grube, Eduard (1857). “Beschreibungen neuer oder weniger bekannter Seesterne und Seeigel”. Proceedings of the Academy (독일어) 27: 6–9.
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