A Pacific krill expatriated into the Arctic

Transparent, yellowish if rich in lipids, females might develop blue hue when spawning; Eyes bi-lobed, rostrum pointed, photophores red; Anntennae lack lappet, carapace with denticle; Abdominal segments 3-6 terminate dorsally with spines; 6th abdominal segment shorter than the two preceding segments combined; second pair of thorathic legs elongated, but often broken during collection

Canadian Exclusive Economic Zone [Pacific part], FAO fishing area 67, North East Pacific, North Pacific

depth in m: 140-280; horizontal distribution: boreal to subarctic N Pacific

Depth range based on 66 specimens in 1 taxon.
Water temperature and chemistry ranges based on 55 samples.

Environmental ranges
  Depth range (m): 0 - 549
  Temperature range (°C): -0.183 - 12.204
  Nitrate (umol/L): 2.538 - 27.783
  Salinity (PPS): 31.271 - 33.778
  Oxygen (ml/l): 2.991 - 7.600
  Phosphate (umol/l): 0.663 - 2.317
  Silicate (umol/l): 9.221 - 43.878

Graphical representation

Depth range (m): 0 - 549

Temperature range (°C): -0.183 - 12.204

Nitrate (umol/L): 2.538 - 27.783

Salinity (PPS): 31.271 - 33.778

Oxygen (ml/l): 2.991 - 7.600

Phosphate (umol/l): 0.663 - 2.317

Silicate (umol/l): 9.221 - 43.878
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Subarctic Pacific in shelf-break habitats deeper than 200 m, amd some some isolated deep fjords; Transposted into the Chukchi Sea by currents; Undergo limited diel vertical migrations, spending daytime near bottom or typically 150-300 m (500 m maximum), night-time shallower

Primarily predatory on smaller zooplankton, but can consume algae when abundant; Prey item for fish, birds, seals and whales

Females lay several clutches of eggs during spring; Females require repeated mating after each molt to form new egg clutches; Life cycles is typcial: eggs, nauplius, metanauplius, followed by several stages of feeding calytopsis, and furcillia larvae; Juveniles resemble adults, and molt regularly while growing to adulthood over the first year of life; Life expectancy not known, likely 2-3 years

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


There are 2 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.


Download FASTA File

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 3
Species With Barcodes: 1