Pycnogonida |
Pantopoda |
Nymphonidae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
; Mức độ sâu 0 - 100 m (Tài liệu tham khảo 256). Boreal
Northwest Pacific, Arctic and Northern Atlantic.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm ? range ? - ? cm
Trunk glabrous, lateral processes separated by intervals equal to diameters, about 1.5 times longer than diameters. Neck moderately long, ocular tubercle wider than tall, eyes large. Proboscis a cylinder tapering distally. Abdomen short, not as long as fourth lateral processes.
Chelifore scapes as long as proboscis, palm rectangular, with many ventral setae, fingers shorter, slender, carried at acute angle, armed with many tiny teeth. Palp second and third segments subequal, fourth very short, fifth about as long as third, distal 2 segments with many short setae. Oviger terminal claw with many tiny teeth. Legs long, slender, tarsus about 1.5 times longer than slender propodus, both with tiny sole spines. Claw slender, slightly less than half propodus length, auxiliaries less than 0.3 main claw length (Ref. 2153, p. 23).
Shelf (Ref. 19). Sublittoral (Ref. 256).
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.
King, P.E. 1973 Pycnogonids. Hutchinson of London. London, UK. 144 p. (Tài liệu tham khảo 12)
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 |
Các công cụ
Thêm thông tin
Sinh thái dinh dưỡngFood items (preys)
Thành phần thức ăn
Thành phần thức ăn
Các động vật ăn mồi
Population dynamicsSự sinh trưởng
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.
Các nguồn internet
Estimates based on models
Preferred temperature
(Ref.
115969): 0.4 - 11.5, mean 3 (based on 1310 cells).
Price category
Unknown.
