Malacostraca |
Amphipoda |
Gammaridae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Pelagic. Polar
Northeast Atlantic and the Arctic.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm Max length : 6.2 cm BL male/unsexed; (Ref. )
Sympagic. Lives on the underside of ice floes all year round but is also found in the open ocean (Ref. 118204). Also found on hard bottom (Ref. 117453). Feeds on ice algae and calanoid copepods (Ref. 118204).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the order Amphipoda are gonochoric and sexually dimoprhic (males larger than females). Mating behavior: Males locate potential partners with the aid of their antenna to detect the pheromones released by the females; the male then rides or carries the female until the latter is ready to molt. When the female is ready, the male pushes the sperm into the marsupium and releases the female afterwards. A few hours later, the female releases her eggs into the marsupium for fertilization. Life cycle: Eggs are brooded in the marsupium. Eggs hatch into juveniles and remain in the marsupium for a few days. Each species undergo 20 molts at most, i.e., 1-year long life cycle.
Poltermann, M. 2000. (Ref. 84820)
IUCN Red List Status (Ref. 130435)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Tools
More information
Age/SizeGrowthLength-weightLength-lengthMorphologyLarvaeAbundance
Internet sources
Estimates based on models
Resilience
High, minimum population doubling time less than 15 months (K=0.4-0.48).
Price category
Unknown.
