分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335); leucomelanos: The species name leucomelanos, derived from the Greek leuco (white) and melanos (black), refers to the coloration with white and black dorsal and ventral surfaces, respectively.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
海洋 深海底的, usually 953 - 1022 m (Ref. 89184). ; 20°S - 22°S, 157°E - 160°E (Ref. 114953)
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Southwest Pacific: Coral Sea (off New Caledonia).
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 88.8 cm TL 雄魚/尚未辨別雌雄; (Ref. 89184)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
A medium-sized species of Bathyraja with the following combination of characters: snout long, pointed and very broad, supported by a slender flexible medial cartilage; margin of disc (anterior two-thirds) straight. Orbit about 6.0 times in preorbital length and 0.73 times interorbital width. Mouth moderately broad, 6.8% TL; outer margins of nasal curtain with distinct, broadly triangular lobelet immediately posterior to each nostril; posterior margin of nasal curtain with prominent fringes. Tail of moderate length (about 0.9 times precloacal length), slightly depressed and slender; lateral skin fold moderately developed. Dorsal surface of disc and tail entirely covered with small and fine dermal denticles; ventral surface naked; disc entirely free of enlarged thorns; tail with single median row of 18 large thorns laterally compressed. Dorsal fins small, oblique, about equal in height; epichordal caudal-fin lobe developed. Dorsal surface mostly uniformly white except for black color along disc and tail margins, anterior lobes of pelvic fins, claspers, and dorsal fins. Ventral surface entirely black. Clasper glans with pseudosiphon and component projection; ventral terminal cartilage spoonlike; accessory terminal 2 cartilage with an expanded disc-shaped tip. Distal section of crowns of alar thorns undulating. Tooth rows: 30 in upper jaw, 28 in lower jaw; trunk centra 35; predorsal caudal centra 70; diplospondylous centra 109; pectoral-fin radials 88 (Ref. 89184).
Body shape (shape guide): other; Cross section: flattened.
Probably a benthic species, found more widespread on deep insular slopes of Coral Sea (Ref. 114953).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Iglésias, S.P. and L. Lévy-Hartmann, 2012. Bathyraja leucomelanos, a new species of softnose skate (Chondrichthyes: Arhynchobatidae) from New Caledonia. Ichthyol. Res. 59(1):38-48. (Ref. 89184)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 21 June 2017
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00562 (0.00296 - 0.01067), b=3.13 (2.97 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 4.0 ±0.7 se; based on size and trophs of closest relatives
釣魚的脆弱性 (Ref.
59153): High vulnerability (56 of 100).
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