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Raja brachyura Lafont, 1871

Blonde ray
مشاهدات خود را اضافه کنيد در Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Raja brachyura   AquaMaps   Data sources: GBIF OBIS
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Pictures | تصوير گوگل
Image of Raja brachyura (Blonde ray)
Raja brachyura
Picture by Bergmann, M.

رده بندی / Names اسامي عام | مترادف | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

(كوسه ها و سپرماهيان) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates) > Rajinae
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range بوم شناسي

; دريايي نزديك كف زي; تغييرات عمق 10 - 380 m (Ref. 6808).   Temperate; 60°N - 21°N, 18°W - 24°E

پراكنش كشورها | مناطق سازمان خوار و بار جهاني (FAO) | Ecosystems | ظهور | Point map | معرفي | Faunafri

Eastern Atlantic: Shetland Islands to Morocco, Rio de Oro (Western Sahara), and Madeira.

Length at first maturity / Size / Weight / سن

Maturity: Lm 90.2, range 60 - ? cm
Max length : 120 cm TL جنس نر / بدون خواص جنسي; (Ref. 41333); 125.0 cm TL (female); بيشينه وزن گزارش شده: 14.3 kg (Ref. 40637)

توصيف مختصر ريخت شناسي | ريخت ستجي بوسيله انداره گيري

خارهاي باله پشتي (کل): 0; خارهاي باله مخرجي 0; شعاع نرم باله مخرجي: 0. Upper surface wholly prickly, except in juveniles; underside only prickly along front margins of disc; orbital thorns separate; a regular median row of 40-45 thorns in juveniles and adult females, interrupted on back in males; 60-90 tooth rows; upper surface ochre, with numerous small dark spots to margins of disc, underside white (Ref. 3167).

زيست شناسي     واژه نامه (بعنوان مثال epibenthic)

Found on sand and sand-rock bottoms (Ref. 6808). Feed on all kinds of benthic animals (Ref. 3167). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 10.0-14.3 cm long and 5.8-9.0 cm wide (Ref. 41250). About 40-90 eggs are laid per individual every year (Ref. 41250).

Life cycle and mating behavior بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Spawning mainly from February to August with at least 30 egg-cases laid (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).

مآخذ اصلی Upload your references | مراجع | هماهنگ كننده : McEachran, John | همكاران

McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)

وضعيت در فهرست قرمز IUCN (Ref. 120744)

  نزديک به تهديد شدن (NT) ; Date assessed: 01 December 2008

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر برای انسان ها

  Harmless





استفاده انسانی

ماهي گيري – شيلات: ارزش تحاري اندك; ماهي ها ي سرگرم كننده: بله
FAO(ماهي گيري – شيلات: production; publication : search) | FishSource | Sea Around Us

اطلاعات بيشتر

اسامي عام
مترادف
سوخت و ساز
شکارچیان
سم شناسي بوم زيستي
تولید مثل
بلوغ
تخم ریزی
Spawning aggregation
Fecundity
تخم ها
نمو تخم
مراجع
آبزي پروري
نمايه آبزي پروري
نژادها
ژنتيك
تواتر آلل ها
وارث
بيماري ها
فرآوری
Mass conversion
همكاران
عکس ها
Stamps, Coins Misc.
صداها
سيگواترا
سرعت
نوع شناگری
منطقه آبششي
Otoliths
مغزها
بینایی

ابزارها

گزارش های ويژه

بارگيری XML

منابع اينترنتي

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 7.1 - 16.2, mean 10.3 (based on 462 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00224 (0.00144 - 0.00348), b=3.27 (3.15 - 3.39), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.8   ±0.61 se; Based on food items.
جهندگی (Ref. 69278):  پايين ، كم, كمينه زمان لازم براي دو برابر شدن جمعيت 5/4 – 14 سال (K=0.12-0.19; tmax=15; Fec=40).
Prior r = 0.20, 95% CL = 0.11 - 0.36, Based on 1 stock assessment.
آسيب پذيری (Ref. 59153):  High to very high vulnerability (65 of 100) .
طبقه قيمت (Ref. 80766):   Medium.