Pycnogonida |
Pantopoda |
Ammotheidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic; depth range 7 - 428 m (Ref. 2153). Subtropical
Northwest Pacific: Alaska, Japan and Russian Federation. Subtropical to Boreal.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Very long chelifore scapes, ocular tubercle, erect abdomen, palps, ovigers, and legs with extremely attenuated and slender propodus, claw, and auxiliaries. Lateral processes and first coxae having small laterodistal tubercles and posterior 4 legs with a sex pore spur (Ref. 2153, p. 8).
Shelf to upper slope (Ref. 19).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | 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. 1995 Pycnogonida of the Western Pacific Islands XI. Collections from the Aleutians and other Bering Sea islands, Alaska. Smithsonian Contributions to Zoology 569:1-33. (Ref. 2153)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Tools
More information
Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models
Preferred temperature
(Ref.
115969): 0.6 - 16.2, mean 5.5 (based on 136 cells).
Price category
Unknown.
