Malacostraca |
Amphipoda |
Gammaridae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
Tầng nổi. Polar
Northeast Atlantic and the Arctic.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm ?  range ? - ? cm Max length : 6.2 cm BL con đực/không giới tính; (Tài liệu tham khảo )
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
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | 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 Growth, production and productivity of the Arctic sympagic amphipod Gammarus wilkitzkii. Mar. Ecol. Prog. Ser. 193:109-116. (Tài liệu tham khảo 84820)
IUCN Red List Status
(Tài liệu tham khảo 130435: Version 2025-1)
CITES status (Tài liệu tham khảo 108899)
Not Evaluated
CMS (Tài liệu tham khảo 116361)
Not Evaluated
Threat to humans
Human uses
| FishSource |
Các công cụ
Thêm thông tin
Life cycleSự tái sinh sảnChín muồi sinh dụcSự sinh sảnĐẻ trứngEggsEgg developmentLarvae PhysiologyThành phần ô-xy
Human RelatedStamps, coins, misc.
Các nguồn internet
Estimates based on models
Thích nghi nhanh
Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (K=0.4-0.48).
Fishing Vulnerability
Low to moderate vulnerability (27 of 100).
Price category
Unknown.