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| Native range | All suitable habitat | Point map | Year 2050 |
|
| This map was computer-generated and has not yet been reviewed. |
| Amblyraja radiata AquaMaps Data sources: GBIF OBIS |
را بارگذاری کني تصاوير و فيلم ها
Pictures | تصوير گوگل
Amblyraja radiata
Picture by Ueberschär, B.
Pictures | تصوير گوگل
Picture by Ueberschär, B.
Iceland country information
Common names:
Tindaskata
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Also Ref. 3167, 4645, 12462.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ic.html
National Fisheries Authority: http://brunnur.stjr.is/interpro/sjavarutv/english.nsf/pages/front
Occurrences: Occurrences Point map
Main Ref: Haedrich, R.L. and N.R. Merrett, 1988
National Database:
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Also Ref. 3167, 4645, 12462.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ic.html
National Fisheries Authority: http://brunnur.stjr.is/interpro/sjavarutv/english.nsf/pages/front
Occurrences: Occurrences Point map
Main Ref: Haedrich, R.L. and N.R. Merrett, 1988
National Database:
Common names from other countries
رده بندی / Names اسامي عام | مترادف | Catalog of Fishes(جنس, گونه ها) | ITIS | CoL | WoRMS | Cloffa
(كوسه ها و سپرماهيان) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Amblyraja: Greek, amblys = darkness + Latin, raja, -ae = ray (Raja sp.) (Ref. 45335).
Etymology: Amblyraja: Greek, amblys = darkness + Latin, raja, -ae = ray (Raja sp.) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range بوم شناسي
دريايي; لب شور نزديك كف زي; اقیانوس رو (Ref. 51243); تغييرات عمق 5 - 1540 m (Ref. 117245), usually 25 - 440 m (Ref. 114953). Boreal; -1°C - 14°C (Ref. 49751); 79°N - 38°N, 95°W - 54°E (Ref. 55275)
پراكنش كشورها | مناطق سازمان خوار و بار جهاني (FAO) | Ecosystems | ظهور | Point map | معرفي | Faunafri
North Atlantic and adjacent Arctic.
Length at first maturity / Size / Weight / سن
Maturity: Lm 87.5 range ? - ? cm
Max length : 105 cm TL جنس نر / بدون خواص جنسي; (Ref. 53748); بيشينه وزن گزارش شده: 11.4 kg (Ref. 53748); بيشينه سن گزارش شده: 28 سال ها (Ref. 88929)
Max length : 105 cm TL جنس نر / بدون خواص جنسي; (Ref. 53748); بيشينه وزن گزارش شده: 11.4 kg (Ref. 53748); بيشينه سن گزارش شده: 28 سال ها (Ref. 88929)
توصيف مختصر كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
خارهاي باله پشتي (کل) : 0; خارهاي باله مخرجي: 0. Adults are rhomboid in shape, young are rounder (Ref. 7251). Short, stiff, bluntly triangular snout; tail shorter than body (Ref. 5578). Upper surface very rough, with solid thornlets scattered all over disc and tail, underside smooth, except for some prickles on snout; a constant pattern of separate orbital thorns, a regular row of 13-17 large thorns from nape to first dorsal fin (Ref. 3167); large, close-set thorns with star-shaped bases at upper disc (Ref. 5578). Coloration highly variable; brownish grey with scattered irregular black blotches dorsally; white ventrally; with darker spots and blotches on tail and pelvic fins; black spot on tip of tail (Ref. 2708).
Eurybathic, eurythermic (Ref. 4426) and benthic (Ref. 58426). Cold temperate species found in offshore waters (Ref. 88171) on all kinds of bottoms (Ref. 3167), mainly sandy and muddy (Ref. 82311). In the northeast Atlantic most common between 50-100 m depth (Ref. 88187) at temperatures of 2-5 °C (Ref. 89120). Some seasonal migrations have been reported from the western Atlantic (Ref. 52109, 89121). Migration experiments showed that 85 % of tagged individuals remained within 93 km of the release site, with longest distance travelled at 180 km (Ref. 82319). Feed mainly on fish, crustaceans (Ref. 5951) and polychaete worms (Ref. 5578), but also on hydroids, molluscs, cephalopods and echinoderms (Ref. 49751); known to be a scavenger (Ref. 89122). Diet changes with increasing body size (Ref. 82311). Different populations of starry rays mature at different ages and sizes (Ref. 88171). Oviparous (Ref. 3167). Maturity size varies from 44-90 cm TL. Young hatch at ca. 8-12 cm TL (Ref. 114953). Young may tend to follow large objects, such as their mother (Ref. 205). Rarely reaches 60 cm in the North Sea (Ref. 88187). Able to detect weak electric fields generated by potential prey organisms and may also generate its own weak electric fields (Ref. 10311). Probably taken by hake trawlers (Ref. 5578). Few are dried and salted in Iceland (Ref. 6902). It is a common Skate whose landings are converted to fish-meal (Ref. 117245). It has been mentioned that North American specimens grow to a larger size than East-Atlantic specimens (Arve Lynghammar, pers.comm., 11/09).
Life cycle and mating behavior بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
Distinct pairing with embrace. Oviparous, laying 10-45 egg cases each year (Ref. 44869, 41305). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 3.4-8.9 cm long and 2.3-6.8 cm wide (Ref. 41250). Paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). In the North Sea, fully formed individuals hatch after 4 months and pups are about 8-11 cm in length (Ref. 44869, 37969). In the Barents Sea, low water temperature may lengthen embryonic development time to 2.5-3 years (Ref. 44869).
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. 130435: Version 2024-1)
آسیب پذیر، به فهرست قرمز IUCN مراجعه کنید (VU) (A2bcd); Date assessed: 01 July 2019
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) | FIRMS (Stock assessments) | FishSource |
اطلاعات بيشتر
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversion
بازسازی
فراواني
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversion
بازسازی
فراواني
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
ابزارها
E-book | راهنماي صحرايي | كليدهاي شناسايي | امكان نرم افزاري بسامد طولي | ابزار تاريخ زيستي | نقشه نقطه ای | Classification Tree
| Catch-MSY |
گزارش های ويژه
راجع به نگهداری آکواريم ملاحظه کنيد | برگه اطلاعات و مشخصات گونه ها را ملاحظه کنيد | برگه اطلاعات و مشخصات آبزی پروری را ببينيد
بارگيری XML
صفحه خلاصه | Point data | اسامي عام | تصاوير
منابع اينترنتي
Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | فيش واچر را ببينيد | CISTI | Catalog of Fishes(جنس, گونه ها) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(ژنوم, نوکلئوتيد) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | پايگاه هاي داده ها | Otolith Atlas of Taiwan Fishes | آکواریوم عمومی | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(برو, جستجو) | World Records Freshwater Fishing | Zoological Record
Estimates based on models
Preferred temperature (Ref. 115969): -0.8 - 5, mean 1 (based on 340 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00316 (0.00271 - 0.00368), b=3.25 (3.21 - 3.29), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278): 4.2 ±0.3 se; based on diet studies.
جهندگی (Ref. 120179): پايين ، كم, كمينه زمان لازم براي دو برابر شدن جمعيت 5/4 – 14 سال (K=0.17; tm=4; Fec=13-20).
Prior r = 0.09, 95% CL = 0.06 - 0.13, Based on 1 full stock assessment.
Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (51 of 100).