Oithona similis Claus 1866

Russ Hopcroft, UAF cc-by-nc

Oithona similis is a species of copepods in the family Oithonidae. They are native to Gulf Of Saint Lawrence. They are omnivores. Individuals can grow to 1.2 mm. They are sac spawners. They rely on drag powered swimming to move around.

URI: http://www.marineregions.org/mrgid/4290

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URI: http://www.wikidata.org/entity/Q164509
Definition: organism consuming a variety of foods, usually including both plants and animals

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URI: http://eol.org/schema/terms/sacSpawner
Definition: Sac spawners lay their eggs into an ovigerous sac. Sac spawners spawn few but relatively large eggs that develop slowly.
Attribution: https://en.wikipedia.org/wiki/Spawn_(biology)#Crustaceans

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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 35 attributes, including:

Body symmetry
- URI: http://eol.org/schema/terms/body_symmetry
- Definition: overall repetitive or reflective pattern in the body of one individual of this taxon. eg: bilateral symmetry, rotational symmetry, radial symmetry
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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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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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0.31 mm
carbon biomass
- URI: http://purl.dataone.org/odo/ECSO_00001143
- Definition: The amount of carbon present in biomass
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0.000507 mg
dry body mass
- URI: http://eol.org/schema/terms/bodyMassDry
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0.0011 mg
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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Gulf Of Mexico
- URI: http://www.marineregions.org/mrgid/4288
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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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drag powered swimming
- 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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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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Gulf Of Saint Lawrence
- URI: http://www.marineregions.org/mrgid/4290
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parental care
- URI: http://purl.obolibrary.org/obo/GO_0060746
- Definition: A reproductive behavior in which a parent cares for and rears offspring.
- Comment: [database_cross_reference: GOC:dph]
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sac spawner
- URI: http://eol.org/schema/terms/sacSpawner
- Definition: Sac spawners lay their eggs into an ovigerous sac. Sac spawners spawn few but relatively large eggs that develop slowly.
- Attribution: https://en.wikipedia.org/wiki/Spawn_(biology)#Crustaceans
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prosome length
- URI: http://eol.org/schema/terms/ProsomeLength
- Definition: Length of the prosome of an arthropod. Prosome: anterior region of body, commonly limited behind by major articulation. Collective term for the combined cephalasome and metasome in copepods
- Attribution: http://crustacea.academic.ru/1397/prosome
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0.493 mm
prosome width
- URI: http://eol.org/schema/terms/ProsomeWidth
- Definition: Width of the prosome of an arthropod. Prosome: anterior region of body, commonly limited behind by major articulation. Collective term for the combined cephalasome and metasome in copepods
- Attribution: http://crustacea.academic.ru/1397/prosome
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0.235 mm
zooplankton feeding mode
- URI: http://eol.org/schema/terms/ZooplanktonFeedingMode
- Definition: behavior by which zooplankton obtain food; ambush, feeding current, or cruising. (Barton, AD, Pershing, AJ, Litchman, E, Record, NR, Edwards, KF, Finkel, ZV, Kiørboe, T, Ward, BA. 2013. The biogeography of marine plankton traits. Ecology Letters (2013) 16: 522–534. DOI: 10.1111/ele.12063)
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ambush predator
- URI: http://eol.org/schema/terms/ambush
- Definition: organisms that capture or trap prey by stealth or by strategy (typically not conscious strategy), rather than by speed or by strength.
- Comment: synonym: sit-and-wait predator
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Known occurrences, collected specimens and observations of Oithona similis Claus 1866. View this species on GBIF

Russ Hopcroft, UAF cc-by-nc