Pycnogonida |
Pantopoda |
Nymphonidae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
; djupintervall 4 - 1656 m (Ref. 119523). Boreal; 85°N - 33°N, 180°W - 180°E
Northern Atlantic, Northern Pacific and the Arctic Sea. Temperate to polar.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ?  range ? - ? cm
Species extremely variable, particularly in appendage length ratios. Chela palm is much longer fingers, tarsus length equals propodus (or is sometimes shorter), ocular tubercle is taller, third palp segment much longer and fifth segment longer than fourth, and major leg segments are measurably longer than in Nymphon brevitarse.
Variation occurs in terminal leg segment length ratios. Tarsus can be slightly shorter than propodus or twice as long as propodus or longer, and sole spines vary in number and length (Ref. 2153, p. 21).
Shelf (Ref. 19). Found at depths of 4 to 1656 m (Ref. 119523).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Eggs | Fecundity | Larvae
Members of the class Pycnogonida are gonochoric and sexually dimorphic. During copulation, male usually suspends itself beneath the female. Fertilization occurs as the eggs leave the female's ovigers. Males brood the egg masses until they hatch. Life cycle: Eggs hatch into protonymphon larva then to adults.
de Kluijver, M.J. and S.S. Ingalsuo 2005 Pycnogonida: Microbenthos of the North Sea. Zoological Museum, University of Amsterdam.http://ip30.eti.uva.nl/bis/pycnogonida.php?menuentry=inleiding[accessed13/01/06]. (Ref. 256)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Verktyg
Ytterligare information
Trophic EcologyFood items (preys)
Födosammansättning
Födointag
Predatorer
Population dynamicsTillväxt
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundans
PhysiologySyreförbrukning
Human RelatedStamps, coins, misc.
Internet-källor
Estimates based on models
Preferred temperature
(Ref.
115969): 0.4 - 8.1, mean 2.9 (based on 1951 cells).
Price category
Unknown.