Colobocentrotus atratus

Colobocentrotus atratus
Colobocentrotus atratus on the island of Hawaii
Scientific classification
Kingdom:
Animalia
Phylum:
Echinodermata
Class:
Echinoidea
Order:
Echinoida
Family:
Echinometridae
Genus:
Colobocentrotus
Species:
C. atratus
Binomial name
Colobocentrotus atratus
Synonyms
Test (MHNT)

Colobocentrotus atratus, commonly named the helmet urchin or shingle urchin, is a species of sea urchin in the family Echinometridae.[1] In Hawaii, it is called hāʻukeʻuke. It is found on wave-swept intertidal shores in the Indo-West Pacific, particularly on the shores of Hawaii.

Description

This urchin is a deep maroon colour and shaped like a domed limpet. It can grow to the size of a softball, but is usually much smaller. The upper surface is a mosaic of tiny polygonal plates formed from modified spines to form a smooth mosaic. This is fringed by a ring of large, flattened modified spines. On the underside there is another ring of smaller flattened spines and a large number of tube feet.[2]

Biology

This urchin is usually found on substrates fully exposed to waves and their associated abrasive effect, often in groups. It feeds on periwinkles, other urchins and coralline algae.

In a test comparing shingle urchins to other species of urchin, it was found that their ability to withstand being washed away by moving water excelled. A combination of their shape, their flattened spines and particularly the strong adhesion of their tube feet made them three times as resistant as other species such as Echinometra. This enables them to live on inhospitable wave-battered shorelines.[3]

References

  1. ^ "Colobocentrotus atractus". Integrated Taxonomic Information System. Retrieved 12 January 2009.
  2. ^ Cook Islands Biodiversity
  3. ^ The Echinoblog

Read other articles:

Gerakan Mahasiswa Kristen Indonesia

Gerakan Mahasiswa Kristen Indonesia Partitur Mars GMKI Gerakan Mahasiswa Kristen Indonesia adalah organisasi kemahasiswaan yang didirikan pada tanggal 9 Februari 1950. Namun Christelijke Studenten Vereeniging op Java (CSV) yang menjadi cikal bakal GMKI telah ada jauh sebelumnya dan berdiri sejak 28 Desember 1932 di Kaliurang, Yogyakarta, Indonesia. Sejarah Artikel ini membutuhkan rujukan tambahan agar kualitasnya dapat dipastikan. Mohon bantu kami mengembangkan artikel ini dengan cara menamba...

 

 

Pride Festival of Central PA

Annual LGBT event in Harrisburg, Pennsylvania Pride Festival of Central PAFlying the Pride Flag over the CapitolGenreLGBT, gay prideDatesLast Saturday in JulyLocation(s)Harrisburg, Pennsylvania, United StatesYears active31–32Founded1992Attendance5000Websitecentralpapride.org Pride Festival of Central PA, alternatively called PrideFest of Central PA, is a non-profit which hosts a three-day annual gay pride event that takes place in Harrisburg, Pennsylvania. History The first pride event in C...

 

 

Daniel Berta

Swedish tennis player Daniel BertaCountry (sports) SwedenResidenceUppsala, SwedenBorn (1992-11-26) 26 November 1992 (age 31)Helsingborg, SwedenHeight1.78 m (5 ft 10 in)PlaysRight-handed (two-handed backhand)Prize money$27,060SinglesCareer record0–2Career titles0Highest rankingNo. 637 (30 January 2012)Grand Slam singles resultsFrench OpenQ1 (2010)DoublesCareer record0–2Career titles0Highest rankingNo. 1234 (13 May 2013)Last u...

Benkovce

Municipality in SlovakiaBenkovceMunicipalityBenkovceLocation of Benkovce in the Prešov RegionShow map of Prešov RegionBenkovceLocation of Benkovce in SlovakiaShow map of SlovakiaCoordinates: 48°57′N 21°43′E / 48.950°N 21.717°E / 48.950; 21.717Country SlovakiaRegionPrešovDistrictVranov nad TopľouFirst mentioned1363Area • Total8.239 km2 (3.181 sq mi)Elevation138 m (453 ft)Population • Total532 •...

 

 

Guerre segrete

Guerre segreteminiserie a fumetti Guerre segrete, pittura di Alex Ross su disegni di Mike Zeck Titolo orig.Secret Wars Lingua orig.inglese PaeseStati Uniti TestiJim Shooter DisegniMike Zeck EditoreMarvel Comics 1ª edizionemaggio 1984 – aprile 1985 Periodicitàmensile Albi12 (completa) Editore it.Star Comics Collana 1ª ed. it.Speciale: Guerre Segrete n. 1-3 1ª edizione it.marzo – luglio 1990 Periodicità...

 

 

Green belt

Largely undeveloped, wild, or agricultural land surrounding urban areas Greenbelt redirects here. For the city, see Greenbelt, Maryland. For specific areas of green belt and other uses, see Green belt (disambiguation). Green belt in Tehran, Iran Adelaide Park Lands green belt around the city centre A green belt is a policy, and land-use zone designation used in land-use planning to retain areas of largely undeveloped, wild, or agricultural land surrounding or neighboring urban areas. Similar ...

Anti-Chinese sentiment in Korea

Anti-Chinese riots in Pyongyang, Korea in the aftermath of the Wanpaoshan Incident (1931) Korea has had a long history of both resistance against and subordination to Imperial China (Mostly Manchurian and Mongolian dynasties).[1][2] Until the onset of Western imperialism in the 19th century, Korea had been part of the sinocentric East Asian regional order.[3]: 9  History See also: History of Sino–Korean relations In 1931, while Korea was dominated by ...

 

 

USA-204

United States Space Force military communications satellite constellation USA-204Artist's impression of a WGS-2 satellite in orbitNamesWGS-2WGS SV-2Wideband Global SATCOM-2Mission typeMilitary communicationsOperatorUnited States Air Force / United States Space ForceCOSPAR ID2009-017A SATCAT no.34713Websitehttps://www.spaceforce.mil/Mission duration14 years (planned)15 years and 1 month (in progress) Spacecraft propertiesSpacecraftWGS-2Spacecraft typeWGS Block IBusBSS-702Manufacturer...

 

 

Élections législatives de 1968 dans la Sarthe

1967 1973 Élections législatives de 1968 dans la Sarthe 5 sièges de députés à l'Assemblée nationale 23 et 30 juin 1968 Corps électoral et résultats Inscrits 267 302 Votants au 1er tour 216 460   80,98 %  0,6 Votes exprimés au 1er tour 212 137 Votants au 2d tour 128 846   77,61 % Votes exprimés au 2d tour 124 801 Union des républicains de progrès Liste Union pour la défense de la RépubliqueRépublicains indépendantsModéré...

コルク

この記事は検証可能な参考文献や出典が全く示されていないか、不十分です。出典を追加して記事の信頼性向上にご協力ください。（このテンプレートの使い方）出典検索?: コルク – ニュース · 書籍 · スカラー · CiNii · J-STAGE · NDL · dlib.jp · ジャパンサーチ · TWL（2017年4月） コルクを打ち抜いて作った瓶の栓 コルク（木栓、�...

 

 

سترلينغ (كولورادو)

  لمعانٍ أخرى، طالع سترلينغ (توضيح). سترلينغ     الإحداثيات 40°37′32″N 103°12′43″W / 40.6256°N 103.212°W / 40.6256; -103.212   [1] تاريخ التأسيس 1868  تقسيم إداري  البلد الولايات المتحدة[2]  التقسيم الأعلى مقاطعة لوغان  عاصمة لـ مقاطعة لوغان  خصائص جغرافي�...

 

 

1764

Calendar year Millennium: 2nd millennium Centuries: 17th century 18th century 19th century Decades: 1740s 1750s 1760s 1770s 1780s Years: 1761 1762 1763 1764 1765 1766 1767 1764 by topic Arts and science Archaeology Architecture Art Literature Poetry Music Science Countries Canada Denmark France Great Britain Ireland Norway Russia Scotland Spain Sweden Lists of leaders State leaders Colonial governors Religious leaders Birth and death categories Births Deaths Establishment...

Thomas More Law Center

Christian conservative law firm in Michigan, US This article is about the law center in Ann Arbor, Michigan. For the law center in Chicago Illinois, see Thomas More Society. Thomas More Law CenterHeadquartersAnn Arbor, MichiganRegion served United StatesPresident and Chief CounselRichard ThompsonBudget US$1,378,329 (2012)[1]Websitewww.thomasmore.org Thomas More Law Center offices lobby, Domino Farms The Thomas More Law Center is a Christian, conservative, nonprofit, public interest la...

 

 

Chapter 11, Title 11, United States Code

Section of the United States Bankruptcy Code Chapter 11 redirects here. For other uses, see Chapter 11 (disambiguation). Bankruptcy in theUnited States Bankruptcy in the United States Authority History U.S. Trustee Court BAP Code FRBP Chapters Chapter 7 Chapter 9 Chapter 11 Chapter 12 Chapter 13 Chapter 15 Aspects of bankruptcy law Automatic stay Discharge Bankruptcy trustee Chief restructuring officer Claim Means test DIP vteInsolvency Processes Administration Bankruptcy Chapter 7 (US) CVA C...

 

 

PE scope

Telescopic sight PE Mosin rifle with a PE scope in the hands of Vasily Zaitsev (December 1942, Stalingrad)TypeTelescopic sightPlace of originSoviet UnionService historyIn service1931-?Used byRKKAWarsGreat Patriotic WarProduction historyDesignerLOMODesigned1931ManufacturerLeningrad factory No.357Produced1931-1940 The PE scope (Russian: Винтовочный оптический прицел образца 1931 г.[1] or ПЕ, often called Прицел Емелья�...

665 Sabine

665 SabineA three-dimensional model of 665 Sabine based on its light curveDiscoveryDiscovered byW. LorenzDiscovery siteHeidelbergDiscovery date22 July 1908DesignationsMPC designation(665) SabinePronunciationGerman: [zaːˈbiːnə][1]Alternative designations1908 DKAdjectivesSabinian /səˈbɪniən/[2]Orbital characteristics[3]Epoch 31 July 2016 (JD 2457600.5)Uncertainty parameter 0Observation arc110.08 yr (40208 d)Aphelion3.6830 AU (550...

 

 

Triple Cross (1966 film)

1966 British-French film by Terence Young Triple CrossDVD coverDirected byTerence YoungScreenplay byRené HardyWilliam Marchant (additional dialogue)Based onThe Eddie Chapman Story (1953 autobiography)by Eddie Chapman and Frank OwenProduced byJacques-Paul BertrandStarring Christopher Plummer Romy Schneider Trevor Howard Gert Fröbe Claudine Auger Yul Brynner Harry Meyen Jess Hahn CinematographyHenri AlekanEdited byRoger DwyreMusic byGeorges GarvarentzProductioncompanyCineurop CompanyDistribut...

 

 

Catálogo de Especies Amenazadas de Canarias

Anillado de pardelas durante la campaña de rescate el año 2000. El Catálogo de Especies Amenazadas de Canarias se crea mediante el decreto 151/2001, publicado en el Boletín Oficial de Canarias. Tiempo antes, el 28 de marzo de 1989, el Boletín Oficial del Estado publica la Ley 4/1989 para la conservación de los espacios naturales, la flora y la fauna silvestres del estado. Uno de los frutos de esta ley es la creación del Catálogo Nacional de Especies Amenazadas. Debido a las caracterí...

Stanley Internment Camp

Civilian internment camp in Hong Kong Stanley Internment Camp赤柱拘留營Internment campOne of the former internees looks at Stanley Internment CampCoordinates22°12′57″N 114°13′00″E / 22.2158°N 114.21661°E / 22.2158; 114.21661LocationStanley, Hong KongOperated byJapanOriginal useSchool and prisonOperationalJanuary 1942 (1942-01) - 16 August 1945 (1945-08-16)InmatesNon-Chinese civiliansNumber of inmates2,800 Stanley Internment Camp (Ch...

 

 

نيس سيتي

نيس سيتي     الإحداثيات 38°27′08″N 99°54′22″W / 38.4522°N 99.9061°W / 38.4522; -99.9061   [1] تقسيم إداري  البلد الولايات المتحدة[2]  التقسيم الأعلى مقاطعة نيس  عاصمة لـ مقاطعة نيس  خصائص جغرافية  المساحة 3.636988 كيلومتر مربع2.643947 كيلومتر مربع (1 أبريل 2010)  ار...