Malacostraca |
Isopoda |
Cirolanidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
موجوداتی که در اعماق زیر 200 متر زندگی و تغذیه می کنند; تغييرات عمق 310 - 2300 m (مرجع 3113), usually 365 - 730 m (مرجع 80749). Deep-water
Indo-West Pacific and Western Atlantic.
Length at first maturity / Size / Weight / سن
بلوغ: Lm 18.0 range ? - ? cm Max length : 50.0 cm TL جنس نر / بدون خواص جنسي; (مرجع 99323)
Body depressed without distinct carapace. First thoracic segment fused with head. Sessible eyes; uniramous antennules with reduced exopodites.. First pair of thoracic appendages specialized as maxilliped; other thoracic appendages without exopodites. Shortened abdomen with segments often fused into caudal shield. Pleopods biramous, with flat rami serving as gills. Uropods and telson form fan-like fin, legs natatory.
Largest known isopod. Inhabits the upper and mid slopes of the continental shelf. Bycatch of baited traps (Ref. 80748). This species has mouthparts which are highly adapted to cut and ingest large pieces of food, a large and distensible gut for maximum food ingestion as well as the capacity to store large amounts of lipids in the hepatopancreas (Ref. 80748). Maximum depth range from Ref. 111151. Believed to be a scavenger because of its high incidence in bycatch of trap fisheries (e.g., golden crab, Chaceon fenneri, trap fishery in Northern Gulf of Mexico; see Ref. 80748) (Ref. 3113).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae
Oviposition in females preceded by parturial molt; functional form of oostegites obtained; females can grow between 1-3 cm BL in first parturial molt; 1 or more pre-parturial molts between the onset of ovarian maturity and first parturial molt.
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
Schotte, M., B.F. Kensley and S. Shilling 1995 World list of marine, freshwater and terrestrial crustacea isopoda. National Museum of Natural History Smithsonian Institution: Washington D.C., USA. Http://www.nmnh.si.edu/iz/isopod/ [Accessed 07/03/01]. (مرجع 3113)
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
ماهي گيري – شيلات: از بی علاقه گی
| FishSource |
ابزارها
اطلاعات بيشتر
PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
منابع اينترنتي
Estimates based on models
Preferred temperature
(Ref.
115969): 6.4 - 14.4, mean 9.9 (based on 250 cells).
جهندگی
زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (K=0.74).
Fishing Vulnerability
Low to moderate vulnerability (27 of 100).
طبقه قيمت
Unknown.
