Bathyraja aleutica, Aleutian skate

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Bathyraja aleutica (Gilbert, 1896)

Aleutian skate
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Native range | All suitable habitat | Point map | Year 2050
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Bathyraja aleutica   AquaMaps   Data sources: GBIF OBIS
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Image of Bathyraja aleutica (Aleutian skate)
Bathyraja aleutica
Picture by Orlov, A.

Classification / Names आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | ITIS | CoL | WoRMS | Cloffa

इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335);  aleutica: Named for its type locality, Aleutian Islands..
More on author: Gilbert.

Environment: milieu / climate zone / depth range / distribution range पारिस्थितिकी

समुद्री बाथीड़िमरसल; गहराई सीमा 15 - 1602 m (Ref. 50550). Deep-water

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri

North Pacific: from the Bering Sea, south to Cape Mendocino, northern California, and far west to northern Japan.

Length at first maturity / आकार / वज़न / Age

Maturity: Lm 122.0, range 112 - 132 cm
Max length : 161 cm TL पुल्लिंग / अलिंग; (Ref. 56527); 154.0 cm TL (female); अधिकतम प्रकाशित वज़न: 23.1 kg (Ref. 56527)

Short description आकृति विज्ञान | मौरफोमैटरिक्स

This large, rhomboidal skates (1,540 mm TL) have long head length 16.7-24.3% TL) and rounded pectoral apices; interdorsal space is large (1.3-3.1% TL); claspers short and stubby, with tip rounded and not bulbous, with weakly defined pseudosiphon, the dorsal lobe has a short pseudorhipidion, U-shaped cleft, while ventral lobe with a rounded projection; teeth in 34-42 rows on upper jaw, and 32-38 rows on lower jaw; pectoral radials 90; pelvic fins 22; total vertebrae 152; dorsal surface of body with fine prickles, becoming larger on the tail, also with thorns, with males having alar thorns, no malar thorns, middorsal thorns developed and high in number (4-11), nuchal thorns strong (3-5), scapular and tail thorns present, interdorsal thorns weak (1-2). Colouration: dorsal dark brown to grey, dark spots on pectorals, often with ocellus on either pectoral fin, while ventral white, with darker coloration on the snout, gills, disc margins, pelvics, and underside of the tail (Ref. 126515).

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ epibenthic)

Found in deep waters, on outer continental shelf and upper slope, often over muddy sediments. Reported to feed mainly on benthic crustaceans, including shrimps and crabs, and secondarily on bony fishes (Ref. 126515). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Size at maturity for males 113 cm TL and 125 cm TL for females with males growing to at least 150 cm TL and females grow to about 154 cm TL; reported size at birth is 12-15 cm TL (Ref. 126515). Eggs are deposited in sandy or muddy flats (Ref. 205). Egg capsule measures 120-136 mm long and 73-90 mm wide (Ref. 41249, 41253); golden brown in color, and covered with coarse, striated, and anteriorly-directed prickles, giving it a velvety texture; the cases are with long, curved horns at each corner, with the anterior horns being short and these horns taper and become thin and filamentous at their ends (Ref. 126515).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).

Main reference Upload your references | संदर्भ | संयोजक : McEachran, John | सहयोगीयो

Knuckey, J.D.S. and D.A. Ebert, 2022. A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama). Zootaxa 5142(1):1-89. (Ref. 126515)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 25 November 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

अधिक जानकारी

आम नाम
उपशब्द
चपायचय
परभक्षी
ईकोटोकसीकोलौजी
पुनरुत्पत्ति
परिपक्व अवधि
मछलीऔ का अंडे देना
Spawning aggregation
Fecundity
अंडे
Egg development
Age/Size
बाढ़
Length-weight
Length-length
Length-frequencies
मौरफोमैटरिक्स
आकृति विज्ञान
लार्वा
लारवल गतिकी
भर्ती
बहुतायत
BRUVS
संदर्भ
जलीयकृषि
जलीयकृषि रूपरेखा
खींच
आनुवंशिकी
Electrophoreses
हैरेटिबिलटी
बीमारी
प्रक्रमण
Nutrients
Mass conversion
सहयोगीयो
तस्वीरे
Stamps, Coins Misc.
ध्वनि
सिगुयटिरा
रफ्तार
तैरने के प्रकार
गिल क्षेत्र
Otoliths
दिमाग
दृष्टि

साधन

Special reports

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इंटरनेट स्रोत

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: वर्ग, प्रजाति | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | OceanAdapt | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, खोज | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 1.3 - 5.1, mean 2.3 °C (based on 239 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00316 (0.00214 - 0.00467), b=3.11 (2.99 - 3.23), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.1   ±0.76 se; based on food items.
लौटाव (Ref. 120179):  निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).