Pycnogonida |
Pantopoda |
Nymphonidae
Environment: milieu / climate zone / गहराई सीमा / distribution range
पारिस्थितिकी
; गहराई सीमा 2450 - 2818 m (संदर्भ 9). Subtropical
Antarctic, Southwest Atlantic and Pacific: Argentina, New Zealand, Antarctica and South Orkneys Island.
Length at first maturity / आकार / Weight / Age
परिपक्व अवधि: 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
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | 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. (संदर्भ 9)
IUCN Red List Status
(संदर्भ 130435: Version 2025-1)
CITES status (संदर्भ 108899)
Not Evaluated
CMS (संदर्भ 116361)
Not Evaluated
Threat to humans
Human uses
| FishSource |
साधन
अधिक जानकारी
Trophic EcologyFood items (preys)
संघटक आहार
आहार खपत
परभक्षी
Population dynamicsबाढ़
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
बहुतायत
Life cycleपुनरुत्पत्तिपरिपक्व अवधिFecundityमछलीऔ का अंडे देनाEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
इंटरनेट स्रोत
Estimates based on models
Preferred temperature
(Ref.
115969): -0.2 - 2, mean 0.6 (based on 416 cells).
Price category
Unknown.
