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); longicephalus: longus (L.), long; cephalus, from kephale (Gr.), head, about ¼ of total length. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海底的; 深度上下限 680 - 950 m (Ref. 97621). 深水域; 39°N - 22°S
Indo-West Pacific: Seychelles, Japan, East China Sea, Philippines, and Australia. New specimens were caught off western New Caledonia (Coriolis Bank, Lansdowne Bank, Lord Howe Ridge and Fairway Ridge) and off Mozambique (Ref. 53905).
印度-西太平洋: 塞錫爾群島，日本，東中國海，菲律賓與澳洲。 新的標本被捕捉外海的新加勒多尼亞 (科里奧利淺堆， Lansdowne 淺堆，羅得豪島脊與航路脊) 西部與莫三比克外海。 (參考文獻 53905)
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 51.0 range ? - ? cm
Max length : 60.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 559)
背棘 (總數) : 0; 臀棘: 0. Grey-black, without conspicuous markings (Ref. 244).
灰黑色的, 沒有顯著的斑紋.(參考文獻 244)
Inhabits deep water, probably near the bottom (Ref. 11146). Oviparous (Ref. 50449). First record of a cartilaginous fish manifesting rudimentary hermaphroditism (Ref. 53905). Biology little known (Ref. 6871).
棲息於深水域, 可能在底部的附近.(參考文獻 11146) 卵生的.(參考文獻 50449) 第一個軟骨魚的記錄顯示不發達的雌雄同體性.(參考文獻 53905) 生物學特性知道的很少.(參考文獻 6871)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). First record of a cartilaginous fish manifesting hermaphroditism which is further classified as rudimentary hermaphroditism (Ref. 53905).印度-西太平洋: 塞錫爾群島，日本，東中國海，菲律賓與澳洲。 新的標本被捕捉外海的新加勒多尼亞 (科里奧利淺堆， Lansdowne 淺堆，羅得豪島脊與航路脊) 西部與莫三比克外海。 (參考文獻 53905)
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)
無危 (LC) ; Date assessed: 17 February 2015
人類使用
漁業: 低經濟
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Estimates based on models
Preferred temperature (Ref.
123201): 5.2 - 7.4, mean 6 °C (based on 99 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 (0.00176 - 0.00714), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.9 ±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 vulnerability (44 of 100).
