Pycnogonida |
Pantopoda |
Nymphonidae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
; Mức độ sâu 756 - 3940 m (Tài liệu tham khảo 2157). Temperate
Northern Pacific: USA.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm ?  range ? - ? cm
Ocular tubercle well developed with large anterior pair of eyes, posterior pair either inconspicuous or lacking. With two of above males , anterior pair of eyes quite conspicuous but slightly pigmented, smaller posterior pair of eyes present but very inconspicuous, apparently unpigmented. Lateral processes well separated in quite slender species. Terminal palp segment shorter than penultimate segment. Oviger claw short, without teeth, no longer than distal denticulate spines of terminal segment. Spines with either two or three lateral lobes. Propodus shorter than slender tarsus with terminal claw little more than half length of propodus. Male cement gland apertures several inconspicuous ventral pores on femorae (Ref. 2157, p. 7).
Bathyal to abyssal (Ref. 19).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | 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. 1994 Deep-sea Pycnogonida from the temperate west coast of the United States. Smithsonian Contributions to Zoology 556:1-23. (Tài liệu tham khảo 2157)
IUCN Red List Status
(Tài liệu tham khảo 130435: Version 2025-1)
CITES status (Tài liệu tham khảo 108899)
Not Evaluated
CMS (Tài liệu tham khảo 116361)
Not Evaluated
Threat to humans
Human uses
| FishSource |
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Sinh thái dinh dưỡngFood items (preys)
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Sự phong phú
Life cycleSự tái sinh sảnChín muồi sinh dụcSự sinh sảnĐẻ trứngEggsEgg developmentLarvae PhysiologyThành phần ô-xy
Human RelatedStamps, coins, misc.
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Estimates based on models
Price category
Unknown.