Pycnogonida |
Pantopoda |
Ammotheidae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
. Tropical
Pacific and Arctic Oceans: Alaska, Japan and USA.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ? range ? - ? cm Max length : 0.2 cm TRKL hane/ej könsbestämd; (Ref. 2153)
Tiny species, trunk only about 2 mm long, circular in dorsal aspect, lateral processes contiguous with cephalic segment extending slightly beyond circle, ocular tubercle a low cone. Proboscis long, tapering to rounded mouth. Chelifore scapes short, chelae atrophied. Palps very short, 7-segmented. Legs short, robust, with heavily setose integument, femora inflated, larger in females than males. Male second coxae with ventrodistal sexual spur and femora with dorsodistal tubercle. Ovigers and terminal leg segments typical for genus (Ref. 2153, p. 14).
Shelf (Ref. 19). Recorded from many octocoral species (Ref. 121217).
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.
Child, C.A. 1996 The Pycnogonida types of William A. Hilton. II. The remaining undescribed species. Proceedings of the Biological Society of Washington 109(4):677-686. (Ref. 2117)
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
Fishing Vulnerability
Low vulnerability (10 of 100).
Price category
Unknown.
