Malacostraca |
Amphipoda |
Gammaridae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic; brackish; depth range 0 - 75 m (Ref. 104499). Polar
Arctic and Northern Atlantic.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cmmax. reported age: 1.25 years (Ref. 130135)
Life span is about 15 months (Ref. 130135). An omnivore (Ref. 95728). It is found on silty sands (Ref. 96329) and hard bottom (Ref. 117453). In the Vainameri, north-eastern Baltic Sea, inhabits rocky substrates (Ref. 95753).
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.
Cusson, M., P. Archambault and A. Aitken. 2007. (Ref. 3448)
IUCN Red List Status (Ref. 130435)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Tools
Internet sources
Estimates based on models
Preferred temperature
(Ref.
115969): 4.2 - 12.2, mean 9.3 (based on 886 cells).
Resilience
High, minimum population doubling time less than 15 months (tmax=15 months).
Price category
Unknown.
