Overview

Distribution

North Atlantic, Farer Canal, Azure and Canary Islands, Gibraltar, Gulf of Gascon, the central Arctic Basin, North Pacific, Kuril Islands

Creative Commons Attribution 3.0 (CC BY 3.0)

© Elizaveta A. Ershova

Source: iArcZoo

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Physical Description

Morphology

Females: Rostrum straight, relatively narrow and long, the back end of the thorax rounded and with dense pubescence. The genital segment has a protuberance only on the left side in the distal half of the segment at the base of the ventral crest. The genital field has oval shaped mounds, separated more toward the front. The genital segment is equal in length to the next two segment combined, the last segment and caudal rami densely plumose. The bare chaetae on the appendages are longer than the others. A1 as long as the cephalothorax. The outer spine on the second segment of the exopodite of P2 reaches above the next one, the middle spine is equal in length to half of the distance between its base and the base of the next spine.
Males:
The left P5 contains a plate serrated on the longer side, which narrows toward the distal end. Serrations are unequal in length. The penultimate segment has an elongated inner protuberance.

Creative Commons Attribution 3.0 (CC BY 3.0)

© Elizaveta A. Ershova

Source: iArcZoo

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Size

Females: 6.00-12.00 mm
Males: 6.10-10.00 mm

Creative Commons Attribution 3.0 (CC BY 3.0)

© Elizaveta A. Ershova

Source: iArcZoo

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Diagnostic Description

Females: Genital segment has a bump on the distal end on the left side. Two last abdominal segments densely plumose.
Males: Serrated plate on the last segment of the exopodite of the left P5 lacks serrations on the outer edge.

Creative Commons Attribution 3.0 (CC BY 3.0)

© Elizaveta A. Ershova

Source: iArcZoo

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Ecology

Habitat

Depth range based on 42 specimens in 1 taxon.
Water temperature and chemistry ranges based on 40 samples.

Environmental ranges
  Depth range (m): 0 - 5811
  Temperature range (°C): -1.525 - 11.546
  Nitrate (umol/L): 13.640 - 39.817
  Salinity (PPS): 33.700 - 35.362
  Oxygen (ml/l): 1.157 - 8.070
  Phosphate (umol/l): 0.994 - 3.078
  Silicate (umol/l): 8.618 - 151.389

Graphical representation

Depth range (m): 0 - 5811

Temperature range (°C): -1.525 - 11.546

Nitrate (umol/L): 13.640 - 39.817

Salinity (PPS): 33.700 - 35.362

Oxygen (ml/l): 1.157 - 8.070

Phosphate (umol/l): 0.994 - 3.078

Silicate (umol/l): 8.618 - 151.389
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Oceanic, bathypelagic species; in the Arctic Ocean found at depths 0-1400m.

Creative Commons Attribution 3.0 (CC BY 3.0)

© Elizaveta A. Ershova

Source: iArcZoo

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Trophic Strategy

Active predators, feed on smaller copepods. Implements a sit-and-wait strategy, staying motionless in the water column, until prey comes into reach, then rapidly jumps towards the prey by movements of the thoracopods and the first antennae and catches the victim with the enlarged maxillipeds.

Creative Commons Attribution 3.0 (CC BY 3.0)

© Elizaveta A. Ershova

Source: iArcZoo

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Life History and Behavior

Reproduction

Egg-brooding species. Carry resistant sacs with a strong, highly visible membrane, which contain 10-20 large orange to bright red eggs. Eggs contain enough food stores for all the naupliar stages, and possibly the first 2 copepodite stages (which are presumed not to feed)

Creative Commons Attribution 3.0 (CC BY 3.0)

© Elizaveta A. Ershova

Source: iArcZoo

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!