Overview

Comprehensive Description

Description

Body clear, the feeding area dark red. Eggs blue, caudal chaetae and pubescence irradiant.

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Distribution

North Sea, Norwegian Sea, Greenland Sea, the central Arctic Basin. For Kosobokova & al. (2010, in press) Paraeuchaeta norvegica is an expatriate species from Atlantic to the Arctic Ocean Basins, because the reproduction is not assumed in polar waters

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Physical Description

Morphology

Female: The base of the frontal organ is set low. The back corners of the last thoracic segments protrude slightly, but are rounded and pubescent on the bottom edge and carry a slight bump at the very tip. The genital segment is symmetrical with a transverse fold, which is best developed in the left proximal side of the segment. The ventral projection is massive, with peaks above and below the opening. The genital field is slightly asymmetrical with double mounts that carry sharp peaks in their caudal ends. A1 almost as long as the cephalothorax. The outer edge of the first segment of the exopodite of P1 is convex and carries a small spine. The outer spine of the first segment of P1 reaches beyond the base of the next spine.
Male: Exopodite of P1 contains 3 segments. The distal segment of the exopodite of the left P5 does not have a sharp edge, but hold a group of chaetae; the last segment carries a serrated plate with sharp serrations set far apart and ends with a claw-like structure, which is curved inward.

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Size

Females: 7.00-11.00 mm
Males: 5.45-7.50 mm

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Diagnostic Description

Female: The ventral projection on the genital segment is perpendicular to the segment ends in two rounded peaks. The base of the ventral projection carries small folds and bumps on the proximal end of the segment. The back corners of the last thoracic carry a slight bump at the very tip.
Male: Serrated plate on the last segment of the exopodite of the left P5 ends with a claw-like structure which is curved inward.

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Ecology

Habitat

Depth range based on 12638 specimens in 1 taxon.
Water temperature and chemistry ranges based on 12628 samples.

Environmental ranges
  Depth range (m): 0 - 5000
  Temperature range (°C): -0.687 - 16.594
  Nitrate (umol/L): 1.008 - 41.949
  Salinity (PPS): 33.941 - 35.761
  Oxygen (ml/l): 0.584 - 7.740
  Phosphate (umol/l): 0.225 - 3.256
  Silicate (umol/l): 2.680 - 173.635

Graphical representation

Depth range (m): 0 - 5000

Temperature range (°C): -0.687 - 16.594

Nitrate (umol/L): 1.008 - 41.949

Salinity (PPS): 33.941 - 35.761

Oxygen (ml/l): 0.584 - 7.740

Phosphate (umol/l): 0.225 - 3.256

Silicate (umol/l): 2.680 - 173.635
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Oceanic bathypelagic species. In the Arctic Basin occurs at small depths.

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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.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Euchaeta norvegica

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 2
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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Barcode data: Paraeuchaeta norvegica

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There are 5 barcode sequences available from BOLD and GenBank.

Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.

See the BOLD taxonomy browser for more complete information about this specimen and other sequences.

ACAGGGTTG---AGAATAATTATTCGATTAGAATTAGGTCAAGCTGGCTCTTTAATTGGTGAC---GATCAAATTTATAACGTTATTGTTACAGCTCATGCTTTTATTATGATTTTTTTTATAGTTATGCCAATTCTTATTGGAGGATTTGGTAATTGATTAGTACCTCTCATA---TTGGGGGCAGCAGATATGGCTTTTCCTCGAATAAATAATATAAGATTTTGATTTTTAATACCCGCCCTGATTATACTTTTATCTAGATCTTTTGTTGAANGAGGGGCTGGGACAGGTTGAACAGTGTATCCTCCTCTATCTAGAAATATCGCGCATGCTGGAGGATCGGTAGATTTT---GCAATTTTTTCATTGCATTTANCCGGGGTTAGATCTATTTTAGGGGCTGTTAATTTTATCAGAACATTGGGTAATTTACGAGTATTCGAAATATTGTTAGATCGAGTTCCCCTGTTTGCTTGGTCTGTGTTAATTACGGCAGTTCTCTTACTATTGTCTCTGCCCGTGTTAGCCGGG---GCCATTACTATATTATTAACAGATCGAAACTTAAACACAACTTTTTATGAT------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------GNGGGAG
-- end --

Download FASTA File

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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Paraeuchaeta norvegica

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 4
Specimens with Barcodes: 8
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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