Elasmobranchii (hajar och rockor) (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Rhinoraja: Greek, rhinos = nose + Latin, raja, -ae = a sting ray (Ref. 45335).
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina djupbottenlevande; djupintervall 300 - 1000 m (Ref. 50610). Temperate
Northwest Pacific: off northern Japan and the neighboring Russian coast.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 60.0 cm TL hane/ej könsbestämd; (Ref. 5515)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Lobate spines absent. Snout broad, obtuse. Juveniles greenish gray with brown hue on dorsal surface, adults chocolate-brown to gray (Ref. 41158).
Body shape (shape guide): other.
Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 8.5 cm long and 4.3-4.8 cm wide (Ref. 41249, 41253).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 0.9 - 3.6, mean 2.1 °C (based on 41 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00279 - 0.01081), b=3.11 (2.94 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.8 ±0.7 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (Assuming fecundity<100).
Sårbarhet i fisket (Ref.
59153): Moderate vulnerability (44 of 100).
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