|
gptkbp:instanceOf
|
gptkb:fish
脊椎动物
|
|
gptkbp:barbels
|
present
|
|
gptkbp:class
|
gptkb:Actinopterygii
|
|
gptkbp:commercialUse
|
high
|
|
gptkbp:conservationStatus
|
threatened
|
|
gptkbp:diet
|
small fish
benthic invertebrates
|
|
gptkbp:distribution
|
gptkb:Northern_Hemisphere
|
|
gptkbp:economicImportance
|
fishing
aquaculture
|
|
gptkbp:eggProduct
|
gptkb:seafood
|
|
gptkbp:evolutionaryHistory
|
ancient lineage
|
|
gptkbp:firstDescribed
|
18th century
|
|
gptkbp:fossil
|
gptkb:Jurassic_period
|
|
gptkbp:habitat
|
freshwater
coastal marine waters
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
sturgeons
|
|
gptkbp:jawType
|
protrusible
|
|
gptkbp:lifespan
|
up to 100 years
|
|
gptkbp:migratory
|
long-distance
|
|
gptkbp:notableFor
|
caviar production
|
|
gptkbp:notableSpecies
|
gptkb:Beluga_sturgeon
gptkb:Sterlet
gptkb:White_sturgeon
Atlantic sturgeon
Lake sturgeon
|
|
gptkbp:numberOfSpecies
|
about 27
|
|
gptkbp:oldestSpecies
|
gptkb:Beluga_sturgeon
gptkb:Acipenser_ruthenus
|
|
gptkbp:order
|
gptkb:Acipenseriformes
|
|
gptkbp:protectedBy
|
gptkb:CITES
|
|
gptkbp:region
|
gptkb:Eurasia
gptkb:North_America
|
|
gptkbp:reproduction
|
anadromous
spawning in rivers
|
|
gptkbp:shape
|
cartilaginous skeleton
bony scutes
|
|
gptkbp:size
|
can exceed 5 meters
|
|
gptkbp:swimBladder
|
present
|
|
gptkbp:tailLength
|
heterocercal
|
|
gptkbp:taxonomicFamily
|
gptkb:Acipenseridae
|
|
gptkbp:teeth
|
absent in adults
|
|
gptkbp:threats
|
dams
habitat loss
overfishing
pollution
|
|
gptkbp:weight
|
can exceed 1000 kg
|
|
gptkbp:bfsParent
|
gptkb:Acipenseridae
|
|
gptkbp:bfsLayer
|
5
|