Eccentric Sand Dollar Sea Urchin

Dendraster excentricus (Eschscholtz 1831)

2001 California Academy of Sciences cc-by-nc-sa-3.0

Dendraster excentricus (Eccentric Sand Dollar Sea Urchin) is a species of echinoderms in the family Dendrasteridae. They are native to Pacific Ocean and The Nearctic. Dead Eccentric Sand Dollar Sea Urchin form shallow marine sediments. They are bioturbators. They are nocturnal carnivores. Individuals can grow to 84 mm. They have sexual reproduction.

URI: http://www.marineregions.org/mrgid/1903

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URI: https://www.wikidata.org/entity/Q737742
Definition: one of the eight terrestrial ecozones constituting the Earth's land surface
Attribution: https://commons.wikimedia.org/wiki/File:Ecozone_Nearctic.svg

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URI: http://purl.obolibrary.org/obo/NCIT_C25513
Definition: combine to create (something), eg: a structure

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URI: http://purl.obolibrary.org/obo/ENVO_03000034
Definition: Marine sediment that accumulates within shallow regions of the oceanic basin close to continents, such as the continental shelf, or continental slope

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URI: https://www.wikidata.org/entity/Q864907
Definition: engages in reworking of soils and sediments (animals or plant)

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URI: https://www.wikidata.org/entity/Q81875
Definition: organism that eats mostly or exclusively animal tissue
Attribution: Crustacean body sizes

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URI: http://www.wikidata.org/entity/Q309179
Definition: animal behavior characterized by activity during the night and sleeping during the day

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URI: http://purl.obolibrary.org/obo/GO_0019953
Definition: Capable of creating a new organism by combining the genetic material of two gametes, which may come from two parent organisms or from a single organism, in the case of self-fertilizing hermaphrodites.

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EOL has data for 42 attributes, including:

Body symmetry
- URI: http://eol.org/schema/terms/body_symmetry
- Definition: overall repetitive or reflective pattern in the body of one individual of this taxon. eg: bilateral symmetry, rotational symmetry, radial symmetry
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bilaterally symmetric
- URI: http://purl.obolibrary.org/obo/PATO_0001324
- Definition: being symmetric about a plane running from frontal end to caudal end (head to tail), and having nearly identical right and left halves
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body length
- URI: http://purl.obolibrary.org/obo/CMO_0000013
- Definition: A measurement of the longest dimension of a body, typically between two distinct ends of the body.
- Attribution: [database_cross_reference: Dorland:Dorlands_Illustrated_Medical_Dictionary--31st_Ed] [database_cross_reference: ISBN:978-1416049982]
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84 mm
body shape
- URI: http://eol.org/schema/terms/BodyShape
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radially symmetric
- URI: http://purl.obolibrary.org/obo/PATO_0001325
- Definition: having equal proportion around a central point or axis
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diet includes
- URI: http://eol.org/schema/terms/Diet
- Definition: Information about the items eaten by this organism.
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echinoderms
- URI: https://www.wikidata.org/entity/Q44631
- Definition: marine phylum of animals
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ecomorphological guild
- URI: http://eol.org/schema/terms/EcomorphologicalGuild
- Definition: organisms that share certain morphological traits due to adaptation to similar environments and ecological roles
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planktonic
- URI: http://www.marinespecies.org/traits/Plankton
- Definition: Living in the fluid medium (water or air) but unable to maintain their position or distribution independently of the movement of the water/air mass (adapted from Lincoln et al., 1998).
- Attribution: http://www.marinespecies.org/traits/wiki/Traits:Plankton
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ecosystem engineering
- URI: http://polytraits.lifewatchgreece.eu/terms/RW
- Definition: directly or indirectly modulating the availability of resources to other species, by causing physical state changes in biotic or abiotic materials; modifying, maintaining and/or creating habitats
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bioturbator
- URI: https://www.wikidata.org/entity/Q864907
- Definition: engages in reworking of soils and sediments (animals or plant)
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geographic distribution includes
- URI: http://eol.org/schema/terms/Present
- Definition: This organism is known to be present in this location or region. Not exclusive; other regions may also be reported.
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North Pacific Ocean
- URI: http://www.geonames.org/4030875
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mating system
- URI: http://eol.org/schema/terms/MatingSystem
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promiscuous
- URI: http://purl.obolibrary.org/obo/ECOCORE_00000067
- Definition: A member of one sex mates with any member of the opposite sex
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native range includes
- URI: http://eol.org/schema/terms/NativeRange
- Definition: Lists jurisdictions in which a given organism is a member of the undisturbed fauna or flora.
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Pacific Ocean
- URI: http://www.marineregions.org/mrgid/1903
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social system
- URI: http://eol.org/schema/terms/SocialSystem
- Definition: Description of the relationships among individuals within a population of organisms, including reproductive relationships (mating system), relationships within each sex, adult – young interactions, helpers and cooperation (group living).
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group living
- URI: http://eol.org/schema/terms/socialGroupLiving
- Definition: where individuals of the same species (conspecifics), maintain spatial proximity with one another over time with mechanisms of social attraction
- Attribution: https://en.wikipedia.org/wiki/Group_living
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trophic guild
- URI: http://eol.org/schema/terms/TrophicGuild
- Definition: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)
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invertivore
- URI: http://eol.org/schema/terms/invertivore
- Definition: An organism that feed on invertebrate animals (insects, crustaceans, molluscs, worms, etc.)
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type specimen repository
- URI: http://eol.org/schema/terms/TypeSpecimenRepository
- Definition: The institution that holds a type specimen for a given species. The recommended best practice is to use the identifier in a collections registry such as the Biodiversity Collections Index (http://www.biodiversitycollectionsindex.org/).
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(CAS) - CAS Invertebrate Zoology (IZ) {http://www.calacademy.org/scientists/izg-collections}

Known occurrences, collected specimens and observations of eccentric sand dollar sea urchin. View this species on GBIF

2001 California Academy of Sciences cc-by-nc-sa-3.0