Pycnogonida |
Pantopoda |
Nymphonidae
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
; εύρος βάθους 4 - 1656 m (Αναφ. 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 / Μέγεθος / Weight / Age
Γεννητική Ωρίμανση: 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
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Eggs | Γονιμότητα | 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]. (Αναφ. 256)
IUCN Red List Status
(Αναφ. 130435: Version 2025-1)
CITES status (Αναφ. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Εργαλεία
Περισσότερες πληροφορίες
Τροφική ΟικολογίαFood items (preys)
Σύσταση δίαιτας
Κατανάλωση τροφής
Θηρευτές
Population dynamicsΑύξηση
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Αφθονία
Life cycleΑναπαραγωγήΓεννητική ΩρίμανσηΓονιμότηταΓεννοβολίαEggsEgg developmentLarvae PhysiologyΚατανάλωση οξυγόνου
Human RelatedStamps, coins, misc.
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): 0.4 - 8.1, mean 2.9 (based on 1951 cells).
Price category
Unknown.
