Amphipoda
E408109
Amphipoda is an order of small, laterally compressed crustaceans that includes sand hoppers, beach fleas, and many freshwater and marine species important in aquatic ecosystems.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Amphipoda canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3946307 — 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: Amphipoda Context triple: [Malacostraca, hasOrder, Amphipoda]
-
A.
Malacostraca
Malacostraca is the largest and most diverse class of crustaceans, including crabs, lobsters, shrimp, krill, and many other familiar marine and freshwater species.
-
B.
Branchiobdellida
Branchiobdellida are a group of small, segmented annelid worms, often ectosymbiotic on freshwater crayfish, distinguished by their specialized adaptations for living on crustacean hosts.
-
C.
Euphausiacea
Euphausiacea is an order of small, shrimp-like marine crustaceans known as krill, which form massive swarms and play a crucial role as primary consumers in ocean food webs.
-
D.
Kinorhyncha
Kinorhyncha are a phylum of minute, segmented, marine invertebrates known as mud dragons, characterized by a spiny head and burrowing lifestyle in marine sediments.
-
E.
Crustacea
Crustacea is a large subphylum of mostly aquatic arthropods that includes crabs, lobsters, shrimp, barnacles, and related species characterized by hard exoskeletons and jointed limbs.
- 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: Amphipoda Target entity description: Amphipoda is an order of small, laterally compressed crustaceans that includes sand hoppers, beach fleas, and many freshwater and marine species important in aquatic ecosystems.
-
A.
Malacostraca
Malacostraca is the largest and most diverse class of crustaceans, including crabs, lobsters, shrimp, krill, and many other familiar marine and freshwater species.
-
B.
Branchiobdellida
Branchiobdellida are a group of small, segmented annelid worms, often ectosymbiotic on freshwater crayfish, distinguished by their specialized adaptations for living on crustacean hosts.
-
C.
Euphausiacea
Euphausiacea is an order of small, shrimp-like marine crustaceans known as krill, which form massive swarms and play a crucial role as primary consumers in ocean food webs.
-
D.
Kinorhyncha
Kinorhyncha are a phylum of minute, segmented, marine invertebrates known as mud dragons, characterized by a spiny head and burrowing lifestyle in marine sediments.
-
E.
Crustacea
Crustacea is a large subphylum of mostly aquatic arthropods that includes crabs, lobsters, shrimp, barnacles, and related species characterized by hard exoskeletons and jointed limbs.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf | order of crustaceans ⓘ |
| bodyCompression | laterally compressed ⓘ |
| bodySegmentation | body divided into head, thorax, and abdomen ⓘ |
| broodCare | females carry eggs in a brood pouch (marsupium) ⓘ |
| class | Malacostraca ⓘ |
| containsGroup |
beach fleas
ⓘ
freshwater amphipods ⓘ marine amphipods ⓘ sand hoppers ⓘ |
| developmentType | direct development without a distinct larval stage ⓘ |
| distribution | cosmopolitan distribution in oceans and inland waters worldwide ⓘ |
| diversity | contains thousands of described species ⓘ |
| ecologicalRole |
detritivores
ⓘ
herbivores ⓘ predators of small invertebrates ⓘ scavengers ⓘ |
| eyeType | usually with compound eyes ⓘ |
| feedingMode |
browsing on algae and biofilms
ⓘ
filter feeding in some species ⓘ shredding leaf litter and plant debris ⓘ |
| habitat |
brackish waters
ⓘ
freshwater environments ⓘ marine environments ⓘ terrestrial coastal habitats such as beaches and wrack zones ⓘ |
| hasAbdominalLimbs | abdominal limbs adapted for swimming or jumping ⓘ |
| hasAntennae | two pairs of antennae ⓘ |
| hasCarapace | lacks a carapace ⓘ |
| hasCommonName | amphipods ⓘ |
| hasThoracicLegs | eight pairs of thoracic legs ⓘ |
| importance |
important in aquatic food webs
ⓘ
important prey for fish ⓘ important prey for seabirds ⓘ |
| kingdom | Animalia ⓘ |
| largestKnownSize | about 34 centimetres in length ⓘ |
| locomotion |
crawling on substrates
ⓘ
hopping or jumping ⓘ swimming ⓘ |
| molting | grow by molting the exoskeleton ⓘ |
| phylum | Arthropoda ⓘ |
| reproductionType | sexual reproduction ⓘ |
| sensitivity | sensitive to pollution in freshwater systems ⓘ |
| skeletonType | chitinous exoskeleton ⓘ |
| subclass |
Malacostraca
ⓘ
surface form:
Eumalacostraca
|
| subphylum | Crustacea ⓘ |
| superorder | Peracarida ⓘ |
| taxonRank | order ⓘ |
| trophicLevel |
primary consumers
ⓘ
secondary consumers ⓘ |
| typicalSize | generally 1 to 340 millimetres in length ⓘ |
| use | used as bioindicators of water quality ⓘ |
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: Amphipoda Description of subject: Amphipoda is an order of small, laterally compressed crustaceans that includes sand hoppers, beach fleas, and many freshwater and marine species important in aquatic ecosystems.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.