Hydractinia echinata
E402080
Hydractinia echinata is a small colonial marine hydrozoan that commonly grows on hermit crab shells and is used as a model organism for studying regeneration and allorecognition.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hydractinia | 1 |
| Hydractinia echinata canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3936941 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Hydractinia echinata Context triple: [Hydrozoa, hasMember, Hydractinia echinata]
-
A.
Obelia
Obelia is a genus of small, colonial marine hydrozoans known for their delicate, branching colonies and alternation of polyp and medusa life stages.
-
B.
Stauromedusae
Stauromedusae are a distinctive order of stalked, sessile jellyfish that attach to substrates in cold, shallow marine waters rather than swimming freely like typical medusae.
-
C.
Anesidora
Anesidora is an epithet of the Greek goddess Demeter that emphasizes her role as the giver of gifts, especially the bounty of the earth.
-
D.
Branchiostoma
Branchiostoma is a genus of small, fish-like lancelets that are key model organisms in evolutionary biology for understanding the early evolution of chordates.
-
E.
Cyclomedusa
Cyclomedusa is a disc-shaped fossil organism from the Ediacaran period, interpreted as part of the early complex multicellular life that preceded the Cambrian explosion.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Hydractinia echinata Target entity description: Hydractinia echinata is a small colonial marine hydrozoan that commonly grows on hermit crab shells and is used as a model organism for studying regeneration and allorecognition.
-
A.
Obelia
Obelia is a genus of small, colonial marine hydrozoans known for their delicate, branching colonies and alternation of polyp and medusa life stages.
-
B.
Stauromedusae
Stauromedusae are a distinctive order of stalked, sessile jellyfish that attach to substrates in cold, shallow marine waters rather than swimming freely like typical medusae.
-
C.
Anesidora
Anesidora is an epithet of the Greek goddess Demeter that emphasizes her role as the giver of gifts, especially the bounty of the earth.
-
D.
Branchiostoma
Branchiostoma is a genus of small, fish-like lancelets that are key model organisms in evolutionary biology for understanding the early evolution of chordates.
-
E.
Cyclomedusa
Cyclomedusa is a disc-shaped fossil organism from the Ediacaran period, interpreted as part of the early complex multicellular life that preceded the Cambrian explosion.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
cnidarian
ⓘ
hydrozoan ⓘ species ⓘ |
| belongsToSupergroup | Opisthokonta ⓘ |
| bodyPlan | polyp ⓘ |
| class | Hydrozoa ⓘ |
| colonyGrowthForm | encrusting mat ⓘ |
| domain |
Eukarya
ⓘ
surface form:
Eukaryota
|
| ecologicalRole | epibiont on gastropod shells ⓘ |
| exhibitsPhenomenon |
colonial fusion
ⓘ
colonial rejection ⓘ |
| family |
Hydractinia
ⓘ
surface form:
Hydractiniidae
|
| feedingMechanism | tentacles with nematocysts ⓘ |
| feedingType | carnivorous ⓘ |
| firstDescribedBy | Fleming ⓘ |
| firstDescriptionYear | 1828 ⓘ |
| genus | Hydractinia ⓘ |
| geographicDistribution |
European coasts
ⓘ
Atlantic Ocean ⓘ
surface form:
North Atlantic Ocean
|
| habitat |
marine environment
ⓘ
temperate coastal waters ⓘ |
| hasAllorecognitionSystem | true ⓘ |
| hasCellType | nematocyte ⓘ |
| hasCommonName | snail fur ⓘ |
| hasGenomeSequenced | true ⓘ |
| hasLifeStage |
planula larva
ⓘ
polyp colony ⓘ |
| hasNervousSystem | diffuse nerve net ⓘ |
| hasPolymorphicZooids | true ⓘ |
| hasReproductiveStructure | gonozooid ⓘ |
| hasTrait | high regenerative capacity ⓘ |
| isColonial | true ⓘ |
| kingdom | Animalia ⓘ |
| locomotion | sessile as adult colony ⓘ |
| order | Anthoathecata ⓘ |
| parentTaxon |
Hydractinia echinata
self-linksurface differs
ⓘ
surface form:
Hydractinia
|
| phylum | Cnidaria ⓘ |
| reproductionType |
asexual
ⓘ
sexual ⓘ |
| researchUse |
aging and longevity
ⓘ
developmental biology ⓘ evolution of immunity ⓘ |
| symbioticAssociation | hermit crabs ⓘ |
| taxonRank | species ⓘ |
| typicalSubstrate | hermit crab shells ⓘ |
| usedAsModelOrganismFor |
allorecognition
ⓘ
regeneration ⓘ stem cell biology ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Hydractinia echinata Description of subject: Hydractinia echinata is a small colonial marine hydrozoan that commonly grows on hermit crab shells and is used as a model organism for studying regeneration and allorecognition.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Hydractinia