Pycnogonida |
Pantopoda |
Ammotheidae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
Batypelagisk; djupintervall 1463 - 2992 m (Ref. 9). Temperate
Southwest Pacific and the Antarctic: Macquarie Island Ridge, New Zealand and Australia.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ? range ? - ? cm
Leg span: 180 mm. Trunk: smooth with conical dorsomedian tubercles on segment posteriors, separated from lateral processes with smaller conical tubercles on dorsodistal tips. No appendage setae or spines. Neck: long, ocular tubercle as tall as trunk tubercles, positioned dorsally to oviger bases at posterior third of neck length. Eyes: small, indistinct. Proboscis: tripartite shape with proximal and distal rings. Abdomen: long, downward ventrally to plane of trunk. Chelifore: scapes 2 segments short, subequal in length, chelae vestigial, tiny knobs with minute segmentation line. Palps and ovigers: typical. Male oviger sixth segment with long and short setae subsequent to strigilis which has 3 to 5 rows of narrow denticulate spines. Terminal claw: short, small. Legs: long and slender, without spines or setae. Femur: long segment, tarsus shorter than propodus, claws short, claws of first leg pair small, no longer than wide. Cement glands: extend from proximal femore to distal first tibiae (Ref. 9).
Giant species.
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. 1998 The marine fauna of New Zealand: Pycnogonida (sea spiders). NIWA Biodiversity Memoire 109. National Institute of Water and Atmospheric Research (NIWA). Washington, D.C. 20530, USA. 71 p. + Figure 2A-G, 3A-F, 4, 5. (Ref. 9)
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): 1.4 - 2.6, mean 2.4 (based on 279 cells).
Price category
Unknown.
