分類 / Names
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) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Apristurus: a-, Latin privative, i.e., without; pristis, from pristes (Gr.), sawyer (but here meaning saw); oura (Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related Pristiurus (=Galeus) (See ETYFish); platyrhynchus: platys (Gr.), wide; rhynchus (L.), snout, referring to its shorter, wider snout compared with A. macrorhynchus (See ETYFish).
More on author: Tanaka.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海區的; 深度上下限 759 - ? m (Ref. 58018). 深水域; 35°N - 1°N
Western Pacific: Philippines, South and East China seas; northward to the Suruga Bay, Japan.
西太平洋: 菲律賓, 東南中國海; 向北至日本駿河灣。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 80.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 244); 63.0 cm TL (female)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 0; 臀棘: 0. Diagnostic features include the very short abdomen, with interspace between pectoral and pelvic fins base shorter than 3/5 of anal fin base length; pectoral fin tip reaching beyond the midpoint between pectoral and pelvic fins; first dorsal fin smaller in area than the second dorsal; posterior end base (axil) of second dorsal clearly in front of anal fin axil; low anal fin with a long base. Egg capsule very slender; without tendrils, conical posterior end. Claspers without hooks, with posterior margin of exorhipidion forming a free lobe (Ref. 37959). Black, brown or grey (Ref. 11146), without conspicuous markings on fins (Ref. 244).
鑑別的特徵包括非常短的腹部, 藉由胸鰭之間的間隙與腹鰭基底短於臀鰭基底長度的 3/5; 超過在胸鰭與腹鰭之間的中點的胸鰭頂端; 第一背鰭比較小的在區域中超過第二個背部的; 清楚地在臀鰭前面葉腋的第二背鰭的後端基底 (葉腋); 低的臀鰭有一個長的基底。 卵鞘非常細長的; 沒有捲鬚，錐形後端。 沒有鉤的釦緊物, 藉由形成一個分離的葉的 exorhipidion 的後緣.(參考文獻 37959) 黑色的﹐褐色或灰色的 (參考文獻 11146), 沒有顯著的斑紋在鰭上.(參考文獻 244)
Found on the continental slopes. Poorly known. Oviparous, probably one egg per oviduct laid at a time. Not utilized at present.
棲息於大陸斜坡了。 知道的很少。 卵生的, 可能每個輸卵管只有一個卵一次。 目前未被人類利用。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).西太平洋: 菲律賓, 東南中國海; 向北至日本駿河灣。
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 18 February 2015
人類使用
漁業: 沒有興趣
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Estimates based on models
Preferred temperature (Ref.
123201): 3 - 10.1, mean 3.4 °C (based on 121 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00175 - 0.00721), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.0 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 非常低的, 最小族群倍增時間超過14 年 (Fec assumed to be <10).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (52 of 100).
