Malacostraca |
Amphipoda |
Gammaridae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
; brackvatten; djupintervall 0 - 75 m (Ref. 104499). Polar
Arctic and Northern Atlantic.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ?  range ? - ? cmrapporterad maxålder: 1.25 år (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
Könsmognad | Reproduktion | Lek | 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: Version 2024-2)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Verktyg
Ytterligare information
PhysiologySyreförbrukning
Human RelatedStamps, coins, misc.
Internet-källor
Estimates based on models
Preferred temperature
(Ref.
115969): 4.2 - 12.2, mean 9.3 (based on 886 cells).
Resiliens
Hög, lägsta populationsfördubblingstid mindre än 15 månader (tmax=15 months).
Price category
Unknown.