Pycnogonida |
Pantopoda |
Nymphonidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic; depth range 2450 - 2818 m (Ref. 9). Subtropical
Antarctic, Southwest Atlantic and Pacific: Argentina, New Zealand, Antarctica and South Orkneys Island.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Trunk, lateral processes and scapes with short dorsal spines on low tubercles. Trunk with first two segmentation lines, third line lacking. Lateral processes almost touching proximally, narrowly separated distally. Neck typical, very short, with large oviger bases. Ocular tubercle tall, curved, blind. Proboscis short, abdomen long, horizontal. Chelifores large, chelae with curved teeth, more teeth in movable than immovable fingers. Palp segments 4, 5 very short. Oviger typical, fifth segment longest, curved. Legs slender, armed with rows of short spines. First tibiae the longest segments, tarsus slightly longer than propodus, claw robust, auxiliary claws vestigial. Male cement glands open through 7 - 8 low ventral cups (Ref. 9).
Slope (Ref. 2116).
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. 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 |
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): -0.2 - 2, mean 0.6 (based on 416 cells).
Price category
Unknown.
