Raja parva, African brown skate

You can sponsor this page

Raja parva Last & Séret, 2016

African brown 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.
Raja parva   AquaMaps   Data sources: GBIF OBIS
Upload your photos and videos
Google image
Image of Raja parva (African brown skate)
No image available for this species;
drawing shows typical species in Rajidae.

Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (hajar och rockor) (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 Ekologi

; marina bentopelagisk; djupintervall - 27 m (Ref. 110364), usually - m (Ref. ).   Tropical; 0°C -

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

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

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 37.1 cm TL hane/ej könsbestämd; (Ref. 110364); 41.1 cm TL (female)

Short description Morfologi | Morfometri

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).

Biologi     Ordlista (t.ex. 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 Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Main reference Upload your references | referenser | Koordinator : McEachran, John | Medarbetare

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)

IUCN Red List Status (Ref. 124695)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

Ytterligare information

Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
Stocks
Ekologi
Föda
Födoslag
Födointag
Näringsinnehåll
Populärnamn
synonymer
Metabolik
Predatorer
Ekotoxikologi
Reproduktion
Könsmognad
Lek
Spawning aggregation
Fecundity
Ägg
Egg development
Age/Size
Tillväxt
Length-weight
Length-length
Length-frequencies
Morfometri
Morfologi
Larver
Larvdynamik
Rekrytering
Abundans
BRUVS
referenser
Vattenbruk
Vattenbruksprofil
Avelslinjer
Genetik
Allelfrekvenser
Ärftlighet
Sjukdomar
Behandling
Nutrients
Mass conversion
Medarbetare
Bilder
Stamps, Coins Misc.
Ljud
Ciguatera
Hastighet
Simsätt
Gälyta
Otoliths
Hjärnstorlek
Syn

Verktyg

Special reports

Download XML

Internet-källor

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, 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: Go, sök | 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).
Trofisk nivå (Ref. 69278):  3.6   ±0.6 se; based on size and trophs of closest relatives
Resiliens (Ref. 120179):  Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (33 of 100) .