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Metacarcinus magister (Dana, 1852)
Dungeness crab| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Metacarcinus magister AquaMaps Data sources: GBIF OBIS |
رده بندی / Names اسامي عام | مترادف | CoL | ITIS | WoRMS
Malacostraca | Decapoda | Cancridae
Environment: milieu / climate zone / تغييرات عمق / distribution range بوم شناسي
; لب شور; تغييرات عمق 0 - 360 m (مرجع 865). Temperate; 3°C - 19°C (مرجع 104779), preferred 9°C (مرجع 107945); 61°N - 23°N, 179°W - 110°W
Distribution كشورها | مناطق سازمان خوار و بار جهاني (FAO) | Ecosystems | ظهور | معرفي
Eastern Pacific: Aleutian Islands, Alaska to Magdalena Bay, Mexico. Subtropical to boreal.
Length at first maturity / Size / Weight / سن
بلوغ: Lm ?, range 10 - ? cm Max length : 22.5 cm CW جنس نر / بدون خواص جنسي; (مرجع 865); 16 cm CW (female); بيشينه سن گزارش شده: 10 سال ها (مرجع 104779)
Maximum length for females from Ref. 104779. Epibenthic in estuaries and nearshore environments (Ref. 104211). It is found on soft bottoms in very low intertidal areas to a depth of 360 meters (Ref. 865). Found on seagrasses (Refs. 104216, 106869). Juveniles inhabit and forage on estuaries, particularly in oyster reefs, oyster beds (Ref. 104211, 113901), and eelgrass (Ref. 104211).
Life cycle and mating behavior بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae
Life cycle: The fertilized egg hatches into prezoeae larva and molts into zoea an hour after. The larvae undergo five zoeal stages before molting into megalopae. The megalopae molts into juvenile stage before further molting (at most 12 times) into adult stage (Ref. 104779). Mating behavior: Precopulatory courtship ritual is common (through olfactory and tactile cues); usually indirect sperm transfer (Ref. 833). Males locate premolt females through a pheremonal homing system. Male holds the female in an embrace for at most 7 days prior to the female's molting. An hour after molting, copulation occurs through insertion of male gonopods into the spermathecae of the female to deposit sperm (indirect sperm transfer). The female may then be embraced again for 2 days. Pre- and post-mating embraces are done to protect females from predation, aside from insuring mating success. Mating occurs in estuaries but spawning takes place offshore (Ref. 104779). Crabs can store and utilize sperm for at least 2 years. Eggs are fertilized as they pass through the spermathecae during extrusion (Ref. 104787).
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
Shirley, S.M., T.C. Shirley and S.D. Rice 1987 Latitudinal variation in the Dungeness crab, Cancer magister: zoeal morphology explained by incubation temperature. Mar. Biol. 95(3):371-376. (مرجع 8391)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2025-1)
وضعيت از نظر سايتس (مرجع 108899)
Not Evaluated
CMS (مرجع 116361)
Not Evaluated
خطر برای انسان ها
استفاده انسانی
ماهي گيري – شيلات: تجاري
FAO - ماهي گيري – شيلات: landings, نمايه گونه | FishSource | Sea Around Us
ابزارها
اطلاعات بيشتر
Trophic Ecology
بوم شناسي
Population dynamics
Distribution
Physiology
منابع اينترنتي
BHL | BOLD Systems | CISTI | DiscoverLife | FAO(ماهي گيري – شيلات: نمايه گونه; publication : search) | Fishipedia | GenBank (ژنوم, نوکلئوتيد) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (برو, جستجو) | Zoological Record
Estimates based on models
Preferred temperature
(Ref. 115969): 5.8 - 9.8, mean 7.8 (based on 87 cells).
Prior r = 0.57, 95% CL = 0.37 - 0.85, Based on 3 data-limited stock assessments.
Climate Vulnerability
(مرجع 125649):
Moderate to high vulnerability (51 of 100).
Nutrients : Calcium = 109 [35, 184] mg/100g; Iron = 1.59 [1.21, 1.97] mg/100g; Protein = 20.2 [19.2, 21.3] %; Omega3 = 0.285 [0.185, 0.386] g/100g; Selenium = 48.3 [-31.7, 128.3] μg/100g; VitaminA = 0 μg/100g; Zinc = 1.79 [1.17, 2.40] mg/100g (wet weight); based on nutrient studies.