Zearaja chilensis, Yellownose skate : fisheries

Zearaja chilensis (Guichenot, 1848)

Yellownose skate
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Zearaja chilensis   AquaMaps   Data sources: GBIF OBIS
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Image of Zearaja chilensis (Yellownose skate)
Zearaja chilensis
Afbeelding van Johnny Labbe/Mauricio Ahumada

Classificatie / Namen Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
More on author: Guichenot.

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

marien demersaal; diepte ? - 40 m (Ref. 120403). Temperate; 4°C - 19°C (Ref. 104541); 18°S - 57°S, 75°W - 52°W

Verspreiding Gebieden | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri

Southeast Pacific: central Chile to the Strait of Magellan.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturiteit: Lm 103.5, range 94 - 100 cm
Max length : 152 cm TL mannelijk / geslacht onbekend; (Ref. 120403)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

This medium-sized speies of Dipturus (up to at least 118.0 cm TL) is distinguished from its congeners by the following set of characters: when fresh, the dorsal surface of body is plain brownish to greyish, with some lighter small spots randomly distributed dorsally; one red to purple ocellus over center of each pectoral fin; ocelli with well-defined margins, irregular in shape, but often indistinguishable in fixed specimens; ventrally, white to grey with lighter patches over area of gill openings and beneath mouth; area flanking rostral cartilage membranous and slightly translucent and opaque and yellowish when fixed. Further differs by having a relatively broad disc with angular apices, its width 76.4 (75.0; 77.0) % TL; snout relatively short and broad; tail longer in males (42.2 [40.8] % TL) than in female voucher ([38.8] % TL); ventral head length 35.1 (34.2; 37.7) % TL; preorbital snout length 2.4 (2.9; 2.9) times distance between orbits; orbit diameter 0.5 (0.5; 0.6) of inter-orbital width; in males, the dorsal surface of disc and tail with central longitudinal band of dermal denticles extending from anterior margin of rostral cartilage to tail, including anterior margins of dorsal and caudal fins; a thin band of dermal denticles at anterior margins of pectoral fins, extending from anterior fontanelle to front line of alar thorn patches; dorsal surface of disc and tail of females covered with small dermal denticles, except for external margins of pectoral fins, pelvic fins, and area surrounding caudo-central thorns; with orbital thorns; a single nuchal thorn is often absent; both sexes without scapular thorns; a patch of malar thorns only in adult males; alar thorns only in adult males; medial-dorsal and lateral-dorsal thorns may be present in large specimens, especially in large females; small central-caudal thorns mostly arranged in longitudinal pairs in males and females, with two additional longitudinal rows of fine, sharp and posteriorly oriented lateral-caudal thorns may be present in large specimens; ventral sensory pores are small, distinct, black-edged, most abundant on snout and around mouth, scattered over area between gill openings, sparsely spaced on abdominal area and pectoral fins (Ref. 120403).
Cross section: flattened.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Oviparous (Ref. 50449). Reported size at hatching and incubation period 17.2 cm TL and 252 days, respectively (Ref. 120403). Eggs have horn-like projections on the shell (Ref. 205). Inhabits sandy and muddy bottoms at depths (Ref. 104541).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).

Hoofdreferentie Upload uw referenties | Referenties | Coördinator : McEachran, John | Medewerkers

Concha, F.J., J. Caira, D.A. Ebert and J.H.W. Pomperi, 2019. Redescription and taxonomic status of Dipturus chilensis (Guichenot, 1848), and description of Dipturus lamillai sp. nov. (Rajiformes: Rajidae), a new species of long-snout skate from the Falkland Islands. Zootaxa 4590(5):501-524. (Ref. 120403)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))

  Bedreigd (EN) (A2bd); Date assessed: 06 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

Visserij: commercieel
FAO - Publication: search | FishSource | Sea Around Us

Meer informatie

Trofische ecologie
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genoom
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Schattingen op basis van modellen

Fylogenetische diversiteitsindex
(Ref. 82804) 		PD50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00309 (0.00144 - 0.00663), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau
(Ref. 69278) 		4.5   ±0.6 se; based on diet studies.
Generation time 9.5 (8.1 - 12.6) years. Estimated as median ln(3)/K based on 13 growth studies.
Weerstandsvermogen
(Ref. 120179) 		laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).
Kwetsbaarheid van de visserij
(Ref. 59153) 		High to very high vulnerability (71 of 100). 🛈
Prijsklasse
(Ref. 80766) 		Medium.
Voedingsstoffen
(Ref. 124155) 		Calcium = 3.18 [0.45, 55.95] mg/100g; Iron = 0.198 [0.018, 2.222] mg/100g; Protein = 15.2 [12.7, 18.3] %; Omega3 = 0.698 [0.304, 1.673] g/100g; Selenium = 18.6 [3.7, 89.1] μg/100g; VitaminA = 4.17 [0.30, 53.72] μg/100g; Zinc = 0.25 [0.02, 2.75] mg/100g (wet weight); based on nutrient studies.