Pycnogonida |
Pantopoda |
Nymphonidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
; تغييرات عمق 0 - 100 m (مرجع 256). Boreal
Northwest Pacific, Arctic and Northern Atlantic.
Length at first maturity / Size / Weight / سن
بلوغ: 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
بلوغ | تولید مثل | تخم ریزی | 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.
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
King, P.E. 1973 Pycnogonids. Hutchinson of London. London, UK. 144 p. (مرجع 12)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2025-1)
وضعيت از نظر سايتس (مرجع 108899)
Not Evaluated
Not Evaluated
خطر برای انسان ها
استفاده انسانی
| FishSource |
ابزارها
اطلاعات بيشتر
Trophic EcologyFood items (preys)
تركيب غذايي
مصرف غذايي
شکارچیان
Population dynamicsرشد
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversion
فراواني
Life cycleتولید مثلبلوغFecundityتخم ریزیEggsنمو تخمLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
منابع اينترنتي
Estimates based on models
Preferred temperature
(Ref.
115969): 0.4 - 11.5, mean 3 (based on 1310 cells).
طبقه قيمت
Unknown.
