Gastrotricha
E398092
Gastrotricha are a phylum of microscopic, aquatic invertebrates characterized by a ciliated body used for locomotion and a simple, worm-like form found in marine and freshwater environments.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Gastrotricha canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3841549 — 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: Gastrotricha Context triple: [Lophotrochozoa, includesTaxon, Gastrotricha]
-
A.
Entoprocta
Entoprocta is a small phylum of mostly marine, sessile, filter-feeding invertebrates that superficially resemble bryozoans but are distinguished by their crown of tentacles surrounding both mouth and anus.
-
B.
Rotifera
Rotifera is a phylum of microscopic, mostly aquatic invertebrates known for their wheel-like ciliated structures used for feeding and locomotion.
-
C.
Nemertea
Nemertea, commonly known as ribbon worms, is a phylum of mostly marine, elongated, often brightly colored worms distinguished by their unique eversible proboscis used for hunting.
-
D.
Excavata
Excavata is a major supergroup of unicellular eukaryotes characterized by a ventral feeding groove and often modified mitochondria, including many free-living flagellates and important parasites.
-
E.
Nematoda
Nematoda is a diverse phylum of elongated, unsegmented roundworms found in nearly every habitat on Earth, many of which are important parasites of plants, animals, and humans.
- 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: Gastrotricha Target entity description: Gastrotricha are a phylum of microscopic, aquatic invertebrates characterized by a ciliated body used for locomotion and a simple, worm-like form found in marine and freshwater environments.
-
A.
Entoprocta
Entoprocta is a small phylum of mostly marine, sessile, filter-feeding invertebrates that superficially resemble bryozoans but are distinguished by their crown of tentacles surrounding both mouth and anus.
-
B.
Rotifera
Rotifera is a phylum of microscopic, mostly aquatic invertebrates known for their wheel-like ciliated structures used for feeding and locomotion.
-
C.
Nemertea
Nemertea, commonly known as ribbon worms, is a phylum of mostly marine, elongated, often brightly colored worms distinguished by their unique eversible proboscis used for hunting.
-
D.
Excavata
Excavata is a major supergroup of unicellular eukaryotes characterized by a ventral feeding groove and often modified mitochondria, including many free-living flagellates and important parasites.
-
E.
Nematoda
Nematoda is a diverse phylum of elongated, unsegmented roundworms found in nearly every habitat on Earth, many of which are important parasites of plants, animals, and humans.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
phylum
ⓘ
taxon ⓘ |
| bodyLength | 0.06–3.0 mm ⓘ |
| bodyPlan |
acoelomate or pseudocoelomate
ⓘ
bilaterally symmetrical ⓘ |
| bodyShape | elongated worm-like ⓘ |
| circulatorySystem | absent ⓘ |
| clade | Lophotrochozoa ⓘ |
| commonName |
gastrotrichs
ⓘ
hairybacks ⓘ |
| cuticleFeatures | often with scales or spines ⓘ |
| describedAs | microscopic aquatic invertebrates ⓘ |
| development | direct development without larval stage ⓘ |
| diet |
bacteria
ⓘ
detritus ⓘ microalgae ⓘ protozoa ⓘ |
| digestiveTract | complete with mouth and anus ⓘ |
| distribution | worldwide in suitable aquatic habitats ⓘ |
| ecologicalImportance | important component of meiofauna ⓘ |
| eggType | resting eggs in some species ⓘ |
| estimatedSpeciesCount | about 800 described species ⓘ |
| excretorySystem | protonephridia in many species ⓘ |
| feedingType | microphagous ⓘ |
| firstDescribedBy | Christian Gottfried Ehrenberg ⓘ |
| firstDescribedInYear | 1838 ⓘ |
| gasExchange | across body surface ⓘ |
| habitat |
benthic substrates
ⓘ
freshwater environments ⓘ interstitial spaces between sediment grains ⓘ marine environments ⓘ |
| hasBodyRegion |
head
ⓘ
posterior adhesive region ⓘ trunk ⓘ |
| hasCiliation | ventral ciliated epidermis ⓘ |
| hasCuticle | yes ⓘ |
| hasSensoryStructure |
cilia-based receptors
ⓘ
sensory bristles ⓘ |
| kingdom | Animalia ⓘ |
| lifestyle | free-living ⓘ |
| locomotion | gliding on substrate ⓘ |
| nervousSystem | simple nervous system with cerebral ganglion ⓘ |
| posteriorFeature | adhesive tubes or glands ⓘ |
| reproduction |
parthenogenesis in many freshwater species
ⓘ
sexual reproduction ⓘ |
| researchUse | model for studies of meiofaunal ecology ⓘ |
| respiratorySystem | absent ⓘ |
| sexes | mostly hermaphroditic ⓘ |
| superphylum | Spiralia ⓘ |
| trophicRole | meiobenthos ⓘ |
| usesCiliaFor | locomotion ⓘ |
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: Gastrotricha Description of subject: Gastrotricha are a phylum of microscopic, aquatic invertebrates characterized by a ciliated body used for locomotion and a simple, worm-like form found in marine and freshwater environments.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.