Raja parva, African brown skate

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Raja parva Last & Séret, 2016

African brown skate
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Raja parva   AquaMaps   Data sources: GBIF OBIS
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Image of Raja parva (African brown skate)
No image available for this species;
drawing shows typical species in Rajidae.

Classificatie / Names Populaire 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)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335);  parva: Name from Latin word 'parva' meaning small, referring to the small adult size of this skate compared to most of its congeners.

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

; marien benthopelagisch; diepteverspreiding - 27 m (Ref. 110364), usually - m (Ref. ).   Tropical; 0°C -

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Eastern Central Atlantic: known from Liberia, Senegal (Dakar) and Angola; probably more widspread.

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 37.1 cm TL mannelijk/geslacht niet bekend; (Ref. 110364); 41.1 cm TL (female)

Korte beschrijving Morfologie | Morfometrie

This species is distinguished by the following set of characters: subcircular disc, its width 57-60% TL, 1.2 times its length; snout angle 91-96°; short tail, its length 1.2-1.4 times distance from snout tip to rear of cloaca; narrow tail, its width 1.2-1.3 times height at its midlength, 1.1 times at first dorsal-fin origin; pre-upper jaw length 10-13% TL, 1.5-1.8 times internasal width; length of ventral head 24-26% TL; length of snout 3-3.8 times interorbital width; orbit diameter 1.06-0.99 times the interorbital width; height of first dorsal-fin 3.4-3.9 in its base length; procaudal tail long, its length from first dorsal-fin origin to tail tip is 3.8-4.7 times first dorsal-fin base length, 3.4-3.6 times caudal-fin length (base of epichordal lobe of caudal fin very long); relatively short pelvic fins, length of posterior lobe 17-18% TL and of anterior lobe 63-72% of posterior lobe; in adults clasper relatively large, ~24% TL, connected to pelvic-fin inner margin at ~47% of its length from cloaca; anterior margin of head possess denticle bands on both surfaces in adult male; nuchal thorns 2; adult male with well-developed malar thorn patch; thorn rows on tail 3-5; pectoral-fin radials 79-81 in total; trunk centra is usually 27-28; usually 75-86 predorsal centra; total centra ~128-131; 38-46 tooth rows in upper jaw; colour brown dorsally with faint lighter and darker speckling; pectoral ocelli is moderately large, with dark bluish grey spot surrounded by a black and a yellow ring; its ventral surface whitish with reddish yellow snout tip and disc margin (Ref. 110364).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Unknown depth range but probably inshore for at least some collected specimens were caught by gill-net (Ref. 110364).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Voornaamste referentie Upload your references | Referenties | Coördinator : McEachran, John | Medewerkers

Last, P.R. and B. Séret, 2016. A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex. Zootaxa 4147(4):477-489. (Ref. 110364)

Status op de Rode Lijst van het IUCN (Ref. 124695)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Bekijk FishWatcher gegevens | CISTI | Catalog of Fishes: Genus, Soort(en) | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genoom, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: ga naar, zoek | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.6   ±0.6 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Kwetsbaarheid (Ref. 59153):  Low to moderate vulnerability (33 of 100) .