分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態学
海 底生の; 深さの範囲 400 - 735 m (Ref. 127873). Subtropical
Southeast Pacific: northern Peru to central Chile.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 80.0 cm TL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
This species is distinguished by having the anterior disc margin distinctly undulating; pectoral-fin apices narrowly or abruptly rounded; preorbital length times orbital length 2.00-2.68; preorbital length times interorbital length 1.02-1.30; interorbital space times orbit length 1.20–-1.50; orbital length times spiracle length 2.00-2.53; with a median row of thorns originating from the posterior half of the disc; number of median thorns 26-30; interdorsal thorns 1 or 2; the dorsal disc surface and tail with finely textured denticles on adults confined to a narrow median band originating just posterior to mid-disc and extending along the tail; teeth arranged in quincunx; predorsal tail vertebrae 62; total predorsal vertebrae 93; pectoral-fin radial count 72. Colouration: uniformly colored on their dorsal and ventral surfaces, no blotches, spots, or other distinctive patterns which is consistent at all sizes from young to adult (Ref. 127873).
Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (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)
Human uses
用具
特記事項
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インターネットの情報源
Estimates based on models
Preferred temperature (Ref.
123201): 7.3 - 10.6, mean 9.4 °C (based on 6 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00253 - 0.01042), b=3.12 (2.95 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.9 ±0.7 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (52 of 100).
