Pycnogonida |
Pantopoda |
Ammotheidae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
. Subtropical
Northwest Pacific: Alaska, Japan, Kuril island and Russian Federation.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ? range ? - ? cm
Trunk ovoid in dorsal view, lateral processes closely crowded, with tiny dorsodistal tubercles. Ocular tubercle conical, pointing anteriorly, eyes small, at base of tubercle. Proboscis massive, greatly swollen distally, less so proximally, lips flat. Abdomen moderately long, carried horizontally, bearing small conical dorsodistal tubercle. Chelifores moderately short, scape with narrowly conical dorsodistal tubercle, chelae oval, with endal fold denoting atrophied finger. Palps long, slender, heavily setose distally, distal segments 5-7 each with ventral projection. Ovigers large, segments 3-6 with many lateral setae, seventh with lateral bulge having many setae, strigilis segments small. Legs with many short dorsal spines, low dorsolateral tubercles on the first and third coxae, moderately long sex pore spur on posterior 4 second coxae, and modest dorsodistal tubercle on each femur. Propodus with 3 heel spines and many lateral and sole setae. Claw slender, auxiliaries about half main claw length (Ref. 2153, p. 7).
Coastal to shelf (Ref. 19).
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. 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 |
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): 1.9 - 3.8, mean 3.5 (based on 17 cells).
Price category
Unknown.
