Water Flea

Daphnia (Daphnia) pulex Leydig 1860

TichomÃr Dunlop cc-by-nc-4.0

Daphnia pulex (Water Flea) is a species of arthropods. They are associated with freshwater habitat. They are native to The Nearctic, Australia, the Palearctic, Ethiopia, The Neotropics, and Asia. Individuals can grow to 3.5 mm. They rely on drag powered swimming to move around.

URI: http://purl.obolibrary.org/obo/ENVO_00000873
Definition: A biome that applies to the freshwater realm.

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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://www.geonames.org/2077456

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URI: https://www.wikidata.org/entity/Q106447
Definition: largest of the eight ecozones constituting the Earth's surface
Attribution: https://commons.wikimedia.org/wiki/File:Palearctic.png

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URI: http://www.geonames.org/337996

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URI: https://www.wikidata.org/entity/Q217151
Definition: one of the eight terrestrial ecozones constituting the Earth's land surface
Attribution: https://commons.wikimedia.org/wiki/File:Ecozone_Neotropic.svg

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URI: http://www.geonames.org/6255147

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URI: https://eol.org/schema/terms/drag_based_swimming
Definition: Drag swimmers use a cyclic motion where they push water back in a power stroke, and return their limb forward in the return or recovery stroke. When they push water directly backwards, this moves their body forward, but as they return their limbs to the starting position, they push water forward, which will thus pull them back to some degree, and so opposes the direction that the body is heading. This opposing force is called drag. The return-stroke drag causes drag swimmers to employ different strategies than lift swimmers. Reducing drag on the return stroke is essential for optimizing efficiency.

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EOL has data for 17 attributes, including:

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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1.4 mm
body shape
- URI: http://eol.org/schema/terms/BodyShape
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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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carbon biomass
- URI: http://purl.dataone.org/odo/ECSO_00001143
- Definition: The amount of carbon present in biomass
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0.0231 mg
dry body mass
- URI: http://eol.org/schema/terms/bodyMassDry
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0.0542 mg
eats
- URI: http://purl.obolibrary.org/obo/RO_0002470
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Peridinium wisconsinense
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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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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United States
- URI: http://www.geonames.org/6252001
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habitat
- URI: http://purl.obolibrary.org/obo/RO_0002303
- Definition: x has habitat y if: x is an organism, y is a habitat, and y can sustain and allow the growth of a population of x
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lake
- URI: http://purl.obolibrary.org/obo/ENVO_01000252
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locomotion
- URI: http://purl.obolibrary.org/obo/GO_0040011
- Definition: Self-propelled movement of a cell or organism from one location to another.
- Attribution: [database_cross_reference: GOC:dgh]
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walking
- URI: http://purl.obolibrary.org/obo/NBO_0000056
- Definition: locomoting on limbs with body off the ground such that at least one limb is always touching the ground
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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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the Palearctic
- URI: https://www.wikidata.org/entity/Q106447
- Definition: largest of the eight ecozones constituting the Earth's surface
- Attribution: https://commons.wikimedia.org/wiki/File:Palearctic.png
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preys on
- URI: http://purl.obolibrary.org/obo/RO_0002439
- Definition: An interaction relationship involving a predation process, where the subject kills the target in order to eat it or to feed to siblings, offspring or group members
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Peridinium cinctum
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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NHMUK

Known occurrences, collected specimens and observations of Water Flea. View this species on GBIF

TichomÃr Dunlop cc-by-nc-4.0