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Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335); longirostris: Name from Latin 'longus' = long and 'rostrum' = stiff snout; referring to the distinct long and pointed snout.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
laut batidemersal; kisaran kedalaman 750 - 1050 m (Ref. 131089). Tropical
Penyebaran
Wilayah | Daerah-daerah FAO | Ekosistem | Kemunculan | peta titik | Introduksi | Faunafri
Western Indian Ocean: southern end of the Madagascar Ridge at Walters Shoals.
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 71.1 cm TL jantan/; (Ref. 131089); 70.0 cm TL (female)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
The species is distinguished from all its congeners by its remarkably long and acutely angled
snout, with horizontal preorbital length 17.2-–22.6% TL (vs. 8.5-11.9% TL) and 4.2-6.1 (vs. 1.7-3.5) times orbit length, snout angle 65-85? (vs. 90-150?); with plain dorsal coloration; with an external clasper component dike; with four dorsal terminal (dt) cartilages (Ref. 131089).
Cross section: flattened.
Siklus hidup dan perilaku kawin
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva
Weigmann, S., M.F.W. Stehmann, B. Séret and H. Ishihara, 2024. Description of a remarkable new skate species of Leucoraja Malm, 1877 (Rajiformes, Rajidae) from the Southwestern Indian Ocean: introducing 3D modeling as an innovative tool for the visualization of clasper characters. Biology 13:1-46. (Ref. 131089)
Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: bycatch
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Indeks keanekaragaman filogenetik (Acuan 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.00339 (0.00168 - 0.00682), b=3.25 (3.08 - 3.42), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Tingkat Trofik (Acuan 69278) |
3.6 ±0.2 se; based on size and trophs of closest relatives |
Daya lenting (Acuan 120179) |
sedang, Waktu penggandaan populasi minimum 1.4 - 4.4 tahun (Preliminary K or Fecundity.). |
Kerentanan Penangkapan Ikan (Ref. 59153) |
Moderate to high vulnerability (48 of 100). 🛈 |