Bathyraja irrasa, Kerguelen sandpaper skate : fisheries

Bathyraja irrasa Hureau & Ozouf-Costaz, 1980

Kerguelen sandpaper skate
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Bathyraja irrasa   AquaMaps   Data sources: GBIF OBIS
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Image of Bathyraja irrasa (Kerguelen sandpaper skate)
Bathyraja irrasa
Picture by FAO

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).

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

Marine; bathydemersal; depth range 565 - 1218 m (Ref. 11892). Polar; 48°S - 51°S

Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Southern Ocean: around the Kerguelen Islands.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 120 cm TL male/unsexed; (Ref. )

Biology     Glossary (e.g. epibenthic)

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 11.38 cm long and 7.36 cm wide (Ref. 41249).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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 | References | Coordinator : McEachran, John | Collaborators

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)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))

  Vulnerable (VU) (A2bd); Date assessed: 20 November 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: commercial
FAO - Fisheries: landings search; Publication: search | FishSource | Sea Around Us

More information

Trophic ecology
Food items (preys)
Diet composition
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Predators
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Ecology
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Max. ages / sizes
Length-weight rel.
Length-length rel.
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References

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Fisheries: landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00562 (0.00298 - 0.01063), b=3.13 (2.97 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic level
(Ref. 69278) 		4.0   ±0.7 se; based on size and trophs of closest relatives
Resilience
(Ref. 120179) 		Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability
(Ref. 59153) 		High to very high vulnerability (72 of 100). 🛈
Climate Vulnerability
(Ref. 125649) 		Very high vulnerability (88 of 100). 🛈
Price category
(Ref. 80766) 		Medium.
Nutrients
(Ref. 124155) 		Calcium = 3.07 [0.43, 59.53] mg/100g; Iron = 0.25 [0.02, 3.34] mg/100g; Protein = 14.4 [12.6, 16.4] %; Omega3 = 0.401 [0.154, 1.072] g/100g; Selenium = 18 [3, 81] μg/100g; VitaminA = 4.73 [0.33, 64.44] μg/100g; Zinc = 0.241 [0.015, 2.840] mg/100g (wet weight);