Pycnogonida |
Pantopoda |
Nymphonidae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
. Subtropical
Pacific and Arctic Oceans.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm ? range ? - ? cm
Trunk robust, lateral processes short, little longer than diameters, separated by less than diameters, with few short posterodistal setae. Ocular tubercle very low, eyes filling most of tubercle. Proboscis short, cylindrical, oral surface rounded. Abdomen moderately short, erect. Chelifore scapes robust, slightly curved, chelae palms robust, fingers shorter than palm, with small short teeth. Palps quite short, second segment only about 3 times longer than its width, distal segments each shorter. Legs moderately long, with many short setae and spines, few longer than segment diameters. Tarsus almost as long as propodus. Propodus with 5 larger sole spines, several smaller distal spines. Auxiliary claws little less than half main claw length. Appendages show much variability (Ref. 2153, p. 20).
Shelf to slope (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. 1996 The Pycnogonida types of William A. Hilton. II. The remaining undescribed species. Proceedings of the Biological Society of Washington 109(4):677-686. (Tài liệu tham khảo 2117)
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): -1.5 - 7.7, mean 0.4 (based on 1705 cells).
Price category
Unknown.
