Rhinobatos nudidorsalis

Rhinobatos nudidorsalis Last, Compagno & Nakaya, 2004

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Image of Rhinobatos nudidorsalis
No image available for this species;
drawing shows typical species in Rhinobatidae.

klasifikasi / Nama Nama-nama umum | Sinonim (persamaan) | Catalog of Fishes(Marga, Jenis) | ITIS | CoL | WoRMS | Cloffa

Ikan bertulang rawan (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Rhinobatidae (Guitarfishes)
Etymology: Rhinobatos: Greek, rhinos = nose + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335); nudidorsalis: Name from Latin 'nudus' meaning bare or naked and 'dorsum' for back, referring to its smooth, denticle-free upper surface.
More on authors: Last, Compagno & Nakaya.

Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi Ekologi

laut dasar (demersal); kisaran kedalaman ? - 125 m (Ref. 55722). Tropical

Penyebaran Wilayah | Daerah-daerah FAO | Ekosistem | Kemunculan | peta titik | Introduksi | Faunafri

Central Indian Ocean: Mascarene Ridge. High Seas only.

Ukuran / Berat / umur

Kematangan: Lm ?  range ? - ? cm
Max length : 50.1 cm TL jantan/; (Ref. 55722)

deskripsi pendek Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik

This species is distinguished by the following characters: no thorns on upper surface of the disc, with tail and unpaired fins almost entirely naked; a small, elongate to oval-shaped denticle patch across a naked upper caudal peduncle and upper caudal-fin lobe; a wedge-shaped disc; moderately large orbit, exceeding 4% total length (TL); oblique nostrils, length 1.7 times internarial distance; anterior nasal flaps penetrating well into internarial space, but not almost united; posterior nasal flaps broad; ridges of rostral cartilages well separated dorsally and almost parallel; prebranchial sensory pore patch narrow, extending to first gill slit; postscapular sensory canal long with lateral pores, not grooved, extending almost to pectoral-fin insertions; low dorsal fins; pelvic-fin inner margin distinctly longer than its base; interdorsal distance less than 2.5 times first dorsal-fin base; 2 spiracular folds, outer is much larger than the inner one; caudal fin small with dorsal margin about 1.8 times preventral margin; 172 total vertebral centra; dorsal disc plain colored (Ref. 55722).
Body shape (shape guide): elongated.

Biologi     Daftar kata (contoh epibenthic)

Offshore on insular shelves of the Central Indian Ocean, distribution probably restricted (Ref. 114953). Maximum size is actually unknown, presumably a small- to moderate-size species given that the half-meter holotype is sexually mature (Ref. 55722). Biology is unknown, more specimens needed (Ref. 114953).

Siklus hidup dan perilaku kawin Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva

rujukan utama Unggah referensi Anda | Acuan | Koordinator : McEachran, John | mitra

Last, P.R., L.J.V. Compagno and K. Nakaya, 2004. Rhinobatos nudidorsalis, a new species of shovelnose ray (Batoidea: Rhinobatidae) from the Mascarene Ridge, central Indian Ocean. Ichthyol. Res. 51:153-158. (Ref. 55722)

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

  kekurangan data (DD) ; Date assessed: 24 April 2018

CITES

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

ancaman kepada manusia

  Harmless





penggunaan manusia

FAO - Publication: search | FishSource |

informasi lanjut

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Sumber internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | semak peneliti ikan | CISTI | Catalog of Fishes: Marga, Jenis | DiscoverLife | ECOTOX | FAO - 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: pergi, Cari | World Records Freshwater Fishing | Zoobank | Catatan Zoologi

Estimasi berdasarkan model

Indeks keanekaragaman filogenetik
(Acuan 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00302 (0.00155 - 0.00589), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Tingkat Trofik
(Acuan 69278) 		3.6   ±0.4 se; based on size and trophs of closest relatives
Daya lenting
(Acuan 120179) 		Rendah, Waktu penggandaan populasi minimum 4.5 - 14 tahun (Preliminary low fecundity).
Kerentanan Penangkapan Ikan
(Ref. 59153) 		Low to moderate vulnerability (31 of 100). 🛈