Pycnogonida |
Pantopoda |
Ammotheidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
; تغييرات عمق 175 - 800 m (مرجع 9). Temperate
Antarctic Indian Ocean and Southwest Pacific: Kerguelen, Heard Island and New Zealand.
Length at first maturity / Size / Weight / سن
بلوغ: Lm ? range ? - ? cm Max length : 16.3 cm LS جنس نر / بدون خواص جنسي; (مرجع 9)
Size large with a leg span of 163 mm. Integument covered with short scattered spines. Trunk robust, chunky, with large closely spaced lateral processes. Trunk segment cowls narrow, with dorsal extensions of rims not produced into pointed tubercles. Proboscis longer than trunk, swollen proximally, a down curved narrow cylinder distally. Chelifores enlarged, massive, scapes short, with fully developed chelae. Palps 9 segmented, reduced in size, almost miniature, shorter than proboscis, distal 5 segments without ventral tubercles. Oviger segments mostly curved, clothed tiny setules, strigilis segments recurved, armed with simple setae. Legs short, with few setae, simple setae. Propodus of uniform size, long, curved, without differentiated heel spines but few robust larger sole spines among many smaller sole setae. Claw short, auxiliary claws half main claw length.
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
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. (مرجع 9)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2025-1)
وضعيت از نظر سايتس (مرجع 108899)
Not Evaluated
Not Evaluated
خطر برای انسان ها
Harmless
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): 1.3 - 10, mean 6.5 (based on 71 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).
طبقه قيمت
Unknown.
