Predators include fishes, birds, molluscs, and humans. Triggerfish are able to break urchin tests with their strong jaws and consume the viscera, while gobies consume the urchin's tube feet and pedicellarie. Shorebirds, such as ruddy turnstones, flock over exposed reefs during low tide, pecking through urchin peristomes and eating the viscera. Conch use their radulae to drill through the urchin tests. Humans consume the gonads of this urchin.
This species is able to detect some invertebrate predators' odors and chemical signals, helping it to avoid predation. When attacked, an urchin waves its spines and tube feet as a defense and escape mechanism.
Known Predators:
This species has an elliptical shape with 100 to 150 colored spines on the arboral surface. Size at maturity is typically 40 mm in diameter or smaller, although some individuals recorded larger than 150 mm have been recorded. Test color is variable between individuals, ranging between a black, brown, green or dark blue color with lighter colors on the arboral surface. In some cases the apical system of the test is bright red, with black spines. This species is differentiated from other closely related species by having fewer pore-pairs per arc, fewer ambulacral and interambulacral plates, a different apical system, and slender, tridentate pedicellariae. Like all other echinoids, it has 5 teeth located within a specialized feeding apparatus known as Aristotle's lantern. As with many urchins, this species' spines are venomous.
Range length: 40 to 150 mm.
Other Physical Features: ectothermic ; heterothermic ; radial symmetry ; venomous
Sexual Dimorphism: sexes alike
This species is called by the common names red rock urchin or rock-boring urchin, but these names have also been applied to species such as Echinometra mathaei and Echinometra oblonga.
This species can survive exposure to direct sunlight for up to three hours although water temperatures of over 38°C are lethal.
These urchins communicate with conspecifics through tactile means, using their tube feet and spines and, when spawning, through chemical signals. It is also able to detect shadows and chemicals released by its predators. Although they have no discrete visual organs, urchins have been found to express vision related genes in their tube feet. It has also been found that their spines filter light from wide angles, allowing them to detect relatively fine visual detail (species with densely packed spines have greater acuity than those with widely spaced spines).
Communication Channels: tactile ; chemical
Other Communication Modes: pheromones
Perception Channels: visual ; tactile ; chemical
As of March 2012, there is no active conservation plan for this species. This species is not endangered.
US Federal List: no special status
CITES: no special status
State of Michigan List: no special status
Post-fertilization, zygotes undergo first cleavage after approximately 90 minutes. Planktonic larvae develop in several stages, including the blastula (reached at the 128 cell stage), gastrula (1000 cell stage), and prism stages. The following stage, four-armed pluteus, is reached after the second day of fertilization. Following the fourth day, posterodorsal arms appear and full metamorphosis occurs approximately 19 days after fertilization. This urchin is a slow-growing and relatively long-lived echinoid species with a life expectancy over 10 years.
Development - Life Cycle: metamorphosis
This species is venomous, introducing its toxin via its spines. In Brazil it is responsible for approximately half of all accidents caused by marine animals. Effects of the venom range from mild, temporary discomfort to pain and secondary infections lasting for weeks.
Negative Impacts: injures humans (bites or stings, venomous )
Humans consume the gonads of this species. This urchin can also serve as an indicator of marine pollution by the mercury levels found in its gonads. Humans benefit from this species' role in reducing algal overgrowth and in providing protection for small cleaning fishes, which helps to maintain the health of edible reef fish.
Positive Impacts: food ; research and education
This species affects the development of coral reefs through shading, physical abrasion, and incidental ingestion of sessile epifauna, thus altering the community's physical and biological structure. Because it is mainly herbivorous, it has a strong impact on algal biomass, affecting the biodiversity and functionality of its ecosystem by increasing the access to substrate for the settlement, attachment and growth of other benthic organisms. In Brazil, reduction of algal cover helped recruitment of sponges (Darwinela sp.). Most of this species' relationships are commensal. Some goby and clingfish species, as well as crustaceans, reside within its spines for protection. It is, however, also host to at least two species of ectoparasitic copepods.
Ecosystem Impact: creates habitat; biodegradation ; keystone species
Commensal/Parasitic Species:
This urchin is an omnivorous species, using its arboral spines to trap food and carry it to the oral surface where it uses a specialized feeding apparatus (Aristotle's lantern) to graze and consume its food. Approximately 45% of the diet consists of algae attached to the urchin's burrows and the remainder is algal drift. Some of the macrophytic algae known to be consumed by this species include Dictyota sp., Chaetomorpha sp., Sargassum sp. and Laurencia papilosa, and it is also known to consume seagrasses in the genera Thalassia and Syringodium. Gut contents of some urchins have been observed to include spines from other echinoids (resulting from territorial fights), and sessile invertebrates.
Animal Foods: other marine invertebrates
Plant Foods: algae; macroalgae
Other Foods: detritus
Primary Diet: herbivore (Algivore); omnivore ; detritivore
Rock-boring urchins are distributed throughout the Caribbean and coastal South Atlantic subtropical region, from Bermuda through southern Florida and the islands of the Caribbean (particularly Barbados) to Desterra, Brazil.
Biogeographic Regions: nearctic (Native ); neotropical (Native ); atlantic ocean (Native )
This urchin is typically found in shallow waters of 0-2 meters and has been reported at depths up to 45 meters. It is most abundant on tidal terraces and rocky shores in areas of high energy waves and on shallow coral reefs within rock crevices, and may be present (though less commonly found) on sandy bottoms.
Range depth: 0 to 45 m.
Habitat Regions: tropical ; saltwater or marine
Aquatic Biomes: benthic ; reef ; coastal
Other Habitat Features: intertidal or littoral
Rock-boring urchins exhibit a slow growth rate. After completing their first year of life, average life expectancy is over 10 years. However, there have been no detailed studies documenting the average lifespan in the wild, and estimated lifespans in captive individuals are unknown.
Average lifespan
Status: wild: 10 years.
This species is usually found in dense aggregations. Spawning occurs once or twice (depending on individual conditions) in the summer. Individuals release their gametes into the water column, with males usually spawning before females. This may act as a cue, stimulating females to release eggs.
Mating System: polygynandrous (promiscuous)
Sexual maturity occurs when individuals reach a test diameter of at least 20 mm and when ripe sex cells are present in the gonads. Gonad development occurs most often during spring, with spawning occuring in the summer, usually once but in some cases twice per year. The gonadal index (number of sex cells/unit of gonad tissue) is highest during summer. The gametogenic cycle comprises 5 different stages: proliferative, premature, mature, depleted, and resting. Release of the male’s spermatozoa elicits release of oocytes by females. Spawning may also occur during other times of the year outside of summer, depending primarily on hydrodynamics and nutrient availability. There is currently no published information noting the average number of offspring, gestation period, and birth mass for this species.
Breeding interval: Typically once per year; occasionally twice per year
Breeding season: Spring/summer
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization (External ); broadcast (group) spawning
This species exhibits no parental investment after gamete release. Zygotes become planktonic larvae and drift unattended until they develop into the benthic adult form.
Parental Investment: no parental involvement
In Panama this species has been collected in the Caribbean from:
-Galeta Island, reef flat (USNM E 36320)
-Sail Rock, Colon (USNM E 18697)
-near the mouth of Fox River, Limon Bay (USNM E 4863)
-Devils Beach, Fort Sherman, Limon Bay (USNM E 18815, USNM E 18759)
-Margarita Island, Limon Bay (USNM E 4875
-Largo Remo Island, on reef in front of Droque Island (USNM E 52927; Centroid Latitude: 9.4000; Centroid Longitude: -79.8333)
-North of Maria Soto River (USNM 1011154; Centroid Latitude: 9.5267, Centroid Longitude: -79.6667, depth < 1 m)
-La Doncella, Del Padre Island (USNM 1011125; Centroid Latitude: 9.5800, Centroid Longitude: -79.6700, depth < 1 m)
-1.7 km west southwest of Portobelo on bay side of Cocoli Point (USNM 1017371; associated with rocks and coral)
-Portobelo, first cove southwest of Buenaventura (USNM E 18700; Centroid Latitude: 9.5278, Centroid Longitude: -79.6875, depth 0.2 m)
-Miria Island, San Blas (USNM E 25632, USNM E 18751)
-Pico Feo Island, San Blas (USNM E 18769)
Mortensen, T. (1943). A monograph of the Echinoidea 3(3). Camarodonta 2. Copenhagen. 446 pp., 215 figures, 66 pls; pages: 357-368.
LSID urn:lsid:marinespecies.org:taxname:213380Cidaris fenestrata Leske, 1778 (subjective junior synonym)
Cidaris lucunter (Linnaeus, 1758) (transferred to Echinometra)
Echinometra acufera Mellis, 1875 (subjective junior synonym)
Echinometra lobatus (Blainville, 1825) (subjective junior synonym)
Echinometra michelini L. Agassiz & Desor, 1846 (subjective junior synonym)
Echinometra nigrina Girard, 1850 (subjective junior synonym)
Echinometra subangularis A. Agassiz, 1872-74 (subjective junior synonym)
Echinus lobatus Blainville, 1825 (subjective junior synonym)
Echinus lucunter Linnaeus, 1758 (transferred to Echinometra)
Echinus maugei Blainville, 1825 (subjective junior synonym)
Ellipsechinus lobatus (Blainville, 1825) (subjective junior synonym)
Ellipsechinus subangularis (A. Agassiz, 1872-74) (subjective junior synonym)
Heliocidaris castelnaudi Hupé, 1858 (subjective junior synonym)
Heliocidaris mexicana L. Agassiz & Desor, 1846 (subjective junior synonym)
Toxocidaris mexicana (L. Agassiz & Desor, 1846) (subjective junior synonym)
Der Karibische Bohrseeigel (Echinometra lucunter) ist ein in der Karibik verbreiteter Seeigel.
Echinometra lucunter hat eine eher elliptische als kugelförmige Kalkschale, die einen Durchmesser von etwa 8 cm erreicht. An den äußersten nördlichen und südlichen Rändern des Verbreitungsgebiets werden die Seeigel größer als in der Mitte. Der Seeigel hat recht kurze, bis 4 cm Stacheln mit einer breiten Basis und einem spitzen Ende. Das Kalkgehäuse ist schwarz bis tief bräunlich-rot, dabei an der aboralen (oberen) Seite stärker rot als an der oralen (unteren) Seite gefärbt. Die Stacheln sind meist schwarz.
Der Karibische Bohrseeigel ist getrenntgeschlechtig. Männchen und Weibchen entlassen ihre Gameten ins freie Meerwasser, wo die Befruchtung stattfindet. Die Entwicklung verläuft über frei schwimmende Larvenstadien, bis etwa 19 Tage nach der Befruchtung die Metamorphose zum Seeigel am Meeresgrund stattfindet. Der Seeigel wächst langsam und wird etwa 10 Jahre alt. Die Geschlechtsreife wird bei einem Gehäusedurchmesser von etwa 2 cm erreicht.
Echinometra lucunter ist im Karibischen Meer weit verbreitet und tritt auch an den Küsten Floridas, der Bermudas und Südamerikas südlich bis Brasilien auf. Der Seeigel lebt in sehr seichten felsigen Gebiete und auf Korallenriffen meist weniger als 2 m tief, gelegentlich auch bis 45 m Meerestiefe. Gelegentlich ist er in Seegraswiesen, häufiger aber unter Felsplatten oder Korallenbruchstücken zu finden, insbesondere in Bereichen mit starker Wasserbewegung.
Echinometra lucunter verwendet die Zähne seiner Laterne des Aristoteles, um Löcher in den Fels beziehungsweise ins Korallenriff zu nagen. Tagsüber lebt er in der selbst gebohrten halbkugeligen Wohnhöhle und verlässt diese nachts, um in einem Umkreis von einigen Zentimetern Algen vom Substrat abzuweiden. Die Wohnhöhle wird gegen Artgenossen verteidigt. Manchmal tritt der Seeigel in großer Zahl auf und kann durch seine Bohrtätigkeit erhebliche Schäden anrichten.
Zu den wichtigsten Fressfeinden des Karibischen Bohrseeigels gehören der Steinwälzer (Arenaria interpres), die Königshelmschnecke (Cassis tuberosa) sowie die Fischarten Anisotremus surinamensis, Balistes vetula, Diodon hystrix und Labrisomus nuchipinnis. Die Grundelart Ginsburgellus novemlineatus verbirgt sich zwischen den Stacheln an der Unterseite des Seeigels, wo sie als Parasit dessen Saugfüßchen abweidet.
Der Mensch sammelt den Karibischen Bohrseeigel als Nahrungsmittel. Gegessen werden die Gonaden sowohl der Weibchen als auch der Männchen.
Echinometra lucunter, the rock boring urchin, is a species of sea urchin in the family Echinometridae. It is found in very shallow parts of the western Atlantic Ocean and the Caribbean Sea.
Echinometra lucunter has an elliptical rather than a round test (shell). It can grow to a diameter of about 8 centimetres (3.1 in) and grows larger at the extreme north and south ends of its range than it does in the centre. It has moderately short spines with wide bases and sharp tips. The colour of the test varies from black to deep brownish-red, often being more ruddy on its aboral (upper) surface than on its oral (lower) surface. The spines are usually black.[2]
Echinometra lucunter is common throughout the Caribbean Sea and also occurs in Florida, Bermuda and the South American coast as far south as Brazil. It occurs on shallow rocky areas and on coral reefs usually at depths of 2 metres (6 ft 7 in) or less but occasionally in deeper water down to about 45 metres (148 ft). It is sometimes found among seagrasses and often under rock slabs or broken coral especially in places with high water movement. It sometimes occurs in large numbers and causes considerable damage to coral reefs through its boring activities.[2]
Echinometra lucunter uses the teeth that surround its mouth to grind away at the rock underneath it so as to make a hemispherical depression in which it takes refuge during the day. It emerges at night to graze on algae growing within a few centimetres (inches) of its home.[3] It defends this hole against other sea urchins of its own species. The king helmet shell (Cassis tuberosa) feeds on it and several species of small goby conceal themselves underneath its test.[2]
Echinometra lucunter, the rock boring urchin, is a species of sea urchin in the family Echinometridae. It is found in very shallow parts of the western Atlantic Ocean and the Caribbean Sea.
L’oursin perforant de l'Atlantique (Echinometra lucunter), aussi appelé « oursin de récif », est une espèce d'oursins tropicaux de la famille des Echinometridae, très répandu sur les côtes Ouest de l'océan Atlantique[1].
L'oursin perforant est un oursin légèrement ovale de petite taille, mesurant en moyenne 8 cm[2] de diamètre pour la coquille (appelée « test »), parfois jusqu'à 15 cm[3]). Son corps est généralement de couleur rouge sombre, mais peut aller du rouge vif au pourpre presque noir. Il est protégé par de nombreux piquants (appelés « radioles ») coniques et généralement violacés, densément implantés et suffisamment effilés pour pénétrer facilement la peau d'autres animaux ; ceux-ci peuvent mesurer jusqu'à 4 cm de long[2], et leur couleur peut varier du presque noir au beigeâtre pâle.
Echinometra lucunter sombre aux Bahamas.
Spécimen plus clair en Floride.
Spécimens rouge vif au Venezuela.
Test partiellement dénudé.
Cet oursin peut être confondu avec son proche cousin Echinometra viridis, plus rare et de couleur plus verte.
Cet oursin doit son nom au fait qu'à l'instar de son cousin indo-pacifique il creuse le calcaire de son milieu à l'aide de ses épines et de sa bouche (appelée « lanterne d'Aristote »), de manière à forer un trou qui lui servira d'abri pendant la journée (c'est donc souvent dans ces cavités qu'on peut les voir). Dans les zones où il est très abondant (notamment quand ses prédateurs sont surpêchés par l'homme), il peut ainsi fragiliser le substrat[1]. Il sort de son abri la nuit pour se nourrir, principalement d'algues mais aussi occasionnellement d'invertébrés, de cadavres et de débris.
Cet oursin vit dans les eaux chaudes de l'océan Atlantique ouest, où il est très répandu dans le bassin Caraïbe, de la Caroline du Nord au Brésil. Il est très courant sur les platiers des lagons coralliens de la zone intertropicale de l'ouest de l'océan Atlantique, entre 1 et 140 m de profondeur (mais plus courant dans la zone intertidale, à moins de 10 m de profondeur).
Il fréquente surtout les parois rocheuses et les récifs de corail, où il peut passer la journée à l'abri dans son trou et sortir la nuit se nourrir d'algues à proximité.
Comme tous les oursins vivant à proximité de la surface, l'oursin perforant est souvent responsables de vives douleurs quand un baigneur marche dessus par inadvertance : ses épines ont tendance à se casser dans la plaie, ce qui les rend presque impossibles à enlever entièrement. Heureusement, il n'est pas venimeux, et ne présente pas de grand danger si la plaie est correctement désinfectée : le corps dissoudra les morceaux de silice en quelques semaines.
Cette espèce n'est pas consommée de manière significative, et n'est d'aucune valeur commerciale.
Liste des sous-espèces selon World Register of Marine Species (22 avril 2014)[4] :
L’oursin perforant de l'Atlantique (Echinometra lucunter), aussi appelé « oursin de récif », est une espèce d'oursins tropicaux de la famille des Echinometridae, très répandu sur les côtes Ouest de l'océan Atlantique.
Echinometra lucunter is een zee-egel uit de familie Echinometridae.
De wetenschappelijke naam van de soort werd in 1758 gepubliceerd door Carolus Linnaeus.[1]
De soort wordt aangetroffen in het gehele Caribische gebied en komt ook voor bij Florida, Bermuda en langs de Zuid-Amerikaanse kust tot in Brazilië. Daar komt hij voor in ondiepe rotsachtige gebieden en koraalriffen, meestal op een diepte van 2 meter, maar soms ook in diepere wateren tot 45 meter diepte. Verder komt de soort soms voor in zeegrasvelden en vaak onder rotsplaten of afgebroken koraal, vooral op plaatsen met een sterke golfbeweging. Soms komt de soort voor in grote aantallen en kan aanzienlijke schade veroorzaken aan koraalriffen.
Echinometra lucunter in Venezuela
Echinometra lucunter bij de Bahama's.
Echinometra lucunter is een zee-egel uit de familie Echinometridae.
De wetenschappelijke naam van de soort werd in 1758 gepubliceerd door Carolus Linnaeus.
시추성게(rock boring urchin)는 만두성게과 만두성게속의 성게의 일종이다. 대서양 서해안과 카리브해의 매우 얕은 바다에서 발견된다.
만두성게속의 다른 성게들처럼 단단한 이빨이 있어서 마치 암반을 시추하듯이 돌을 갉아들어가 반구형의 집을 만든다. 낮에는 이 집 안에 숨어 있다가 밤에 집으로부터 몇 센티미터 거리까지 기어나가서 조류를 갉아먹고 귀가한다.[2] 동종의 다른 시추성게로부터 집을 지키려는 방어행동을 보인다.
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