Pycnogonida |
Pantopoda |
Ammotheidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
ناحیه ای از منطقه اقیانوسی با عمق بین 1000 تا 4000 متر. موجوداتی که در آبهای آزاد بین اعماق 1000 تا 4000 متر زندگی و تغذیه می کنند; تغييرات عمق 1463 - 2992 m (مرجع 9). Temperate
Southwest Pacific and the Antarctic: Macquarie Island Ridge, New Zealand and Australia.
Length at first maturity / Size / Weight / سن
بلوغ: Lm ?  range ? - ? cm
Leg span: 180 mm. Trunk: smooth with conical dorsomedian tubercles on segment posteriors, separated from lateral processes with smaller conical tubercles on dorsodistal tips. No appendage setae or spines. Neck: long, ocular tubercle as tall as trunk tubercles, positioned dorsally to oviger bases at posterior third of neck length. Eyes: small, indistinct. Proboscis: tripartite shape with proximal and distal rings. Abdomen: long, downward ventrally to plane of trunk. Chelifore: scapes 2 segments short, subequal in length, chelae vestigial, tiny knobs with minute segmentation line. Palps and ovigers: typical. Male oviger sixth segment with long and short setae subsequent to strigilis which has 3 to 5 rows of narrow denticulate spines. Terminal claw: short, small. Legs: long and slender, without spines or setae. Femur: long segment, tarsus shorter than propodus, claws short, claws of first leg pair small, no longer than wide. Cement glands: extend from proximal femore to distal first tibiae (Ref. 9).
Giant species.
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
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): 1.4 - 2.6, mean 2.4 (based on 279 cells).
طبقه قيمت
Unknown.