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Dipturus chilensis (Guichenot, 1848)
YELLOWNOSE SKATE
Life   Vertebrata   Fish   Rajidae   Dipturus

Dipturus chilensis
© Copyright Photographer/SFTEP, 2002 · 0
Dipturus chilensis

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Dipturus chilensis
© Copyright Photographer/SFTEP, 2002 · 0
Dipturus chilensis
espa˝ol

Overview
Main identification features
  • snout long, tip firm
  • disc: concave front edge
  • top: red blotches
  • belly - pores dark
Disc rhomboidal, width ~1.75 length, with concave front edges; snout long, prominent (length ~19% of total length) stiff, with concave sides; 25-35 rows of teeth on top jaw; dorsal fins close together (separated by less than distance between eyes) no tail fin; 3-5 spines on front and top of eye; 1 large solitary spine on mid-nape; middle of back with or without small denticulations; tail with 10-21 thorns from region above origin of pelvic fins rearwards; 1-2 small spines at edge of disc between snout and pectoral.

Grey above, with a few whitish and red-brown blotches, a pair of larger, darker red-brown blotches on each pectoral fin; belly white with grey blotches or grey with white blotches, with dark pores.

Size: to at least 170 cm.

Habitat: on soft bottoms.

Depth: 30-150 m.

Argentina; and (possibly) Ecuador to Chile in the eastern Pacific.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo); South Temperate (Peruvian Province ).
Depth Range Max: 150 m.
Depth Range Min: 30 m.
Diet: mobile benthic worms; mobile benthic crustacea (shrimps/crabs); mobile benthic gastropods/bivalves; octopus/squid/cuttlefish; bony fishes.
Eastern Pacific Range: Northern limit=-2; Southern limit=-9; Western limit=-82; Eastern limit=-79; Latitudinal range=7; Longitudinal range=3.
Egg Type: Benthic; No pelagic larva; No pelagic phase.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: TEP non-endemic; East Pacific endemic; All species.
Habitat: Mud; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only; Sand & gravel.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 170 cm.
Regional Endemism: Continent only; Continent; Temperate Eastern Pacific, primarily; Tropical Eastern Pacific (TEP) non-endemic; Peruvian province, primarily; All species.
Residency: Vagrant.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;


Names
Scientific source:

Links to other sites

References
  • BÚarez, P., 1996., Lista de los Peces Marinos del Ecuador Continental., Revista de Biologia Tropical, 44:731-741.
  • Compagno, L.J.V., 1999., Checklist of living elasmobranchs. In Hamlett W.C. (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes., The John Hopkins University Press:471-498.
  • Delfin, F. T., 1902., Nuevas Especies de la Familia Rajidae., Revista Chilena de Historia Natural, 6:262-270.
  • Guichenot, A., 1848., Fauna Chilena. Peces. Pp. 137-370. In: C. Gay, Historia fisica y politica de Chile. Vol. 2, Zoologia. Paris & Santiago., Fauna Chilena, Peces,.
  • Lloris , D. and Rucabado, J., 1991., Ictiofauna del Canal Beagle (Tierra de Fuego), Aspectos Ecologicos y Analisis Biogeografico., Publicaciones Especiales Instituto Espa˝ol de Oceanografia, (8):1-182.
  • McEachran , J.D.and Dunn, K.A., 1998., Phylogenetic analysis of skates, a morphologically conservative clade of Elasmobranchs (Chondrichthyes: Rajidae)., Copeia, 1998:271-290.

Acknowledgements

I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.


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Following modified from FishBase
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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Dipturus&speciesname=chilensis ---> https://www.fishbase.se/Summary/speciesSummary.php?genusname=Dipturus&speciesname=chilensis
https://www.fishbase.se/Summary/speciesSummary.php?genusname=Dipturus&speciesname=chilensis ---> https://www.fishbase.se/summary/Dipturus-chilensis.html

Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Zearaja chilensis (Guichenot , 1848)

Yellownose skate Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Zearaja chilensis   AquaMaps   Data sources: GBIF OBIS
Upload your photos  and  videos
Pictures | Google image Image of Zearaja chilensis (Yellownose skate) Zearaja chilensis
Picture by Johnny Labbe/Mauricio Ahumada

Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

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

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

Marine; demersal; depth range 28 - 500 m (Ref. 104541 ).   Temperate; 4°C - 19°C (Ref. 104541 ); 18°S - 57°S, 75°W - 52°W

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

Southeast Pacific and Southwest Atlantic: Uruguay (Ref. 58839 ) and Chile to the Patagonia-Falkland region. Records from Ecuador are questionable.

Length at first maturity / Size / Weight / Age

Maturity: L m 103.5 , range 97 - ? cm
Max length : 210 cm TL male/unsexed; (Ref. 104541 ); common length : 85.0 cm TL male/unsexed; (Ref. 104541 )

Biology     Glossary (e.g. epibenthic)

Oviparous (Ref. 50449 ). Eggs have horn-like projections on the shell (Ref. 205 ). Inhabits sandy and muddy bottoms at depths (Ref. 104541 ).

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

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449 ). Eggs have horn-like projections on the shell (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. 120744 )

  Vulnerable (VU)  (A4bd); Date assessed: 01 March 2007

CITES (Ref. 115941 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless




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Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes ( gen. , sp. ) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank( genome , nucleotide ) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969 ): 4.5 - 10.6, mean 6.7 (based on 334 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00562 (0.00271 - 0.01168), b=3.13 (2.95 - 3.31), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  4.5   ±0.6 se; Based on diet studies. Resilience (Ref. 69278 ):  Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100). Vulnerability (Ref. 59153 ):  High to very high vulnerability (69 of 100) .

Entered by Froese, Rainer Modified by Froese, Rainer Fish Forum
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