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: Pentanchus: penta, from pente (Gr.), five; -anchus, perhaps an abridgement of branchos (Gr.), gill, referring to five pairs of branchial apertures (gill slits), unique among the group of sharks (hexanchoid) in which the authors erroneously believed this shark belonged. (See ETYFish); profundicolus: profundus (L.), deep; -colus (L.), dwelling in, referring to deepwater habitat (holotype taken at 1070 m). (See ETYFish).
More on authors: Smith & Radcliffe.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海底的; 深度上下限 673 - 1069 m (Ref. 47206). 深水域; 12°N - 8°N
Western Central Pacific: known from the holotype and only specimen taken from the Mindanao Sea, Philippines. Upon comparing, the holotypes of Apristurus herklotsi and this species are conspecific, thus, suggesting that Pentanchus is a senior synonym of Apristurus. But due to lack of verifiable specimens, herklotsi is tentatively retained in Apristurus.
中西太平洋: 只有正模式標本與僅有的標本取自了菲律賓民答那峨海。 一比較， Apristurus herklotsi 的 holotypes 與這種是同種的,因此, 顯示出 Pentanchus 是一個 Apristurus 的資深同種異名。 但是由於缺乏可檢驗的標本, herklotsi 是保留在暫時地中的 Apristurus.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 51.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 244)
背棘 (總數) : 0; 臀棘: 0. Only shark with 5 pairs of gill slits and one dorsal fin (Ref. 244). Head broadly flattened and spatulate, snout elongated and usually longer than mouth width. Labial furrows very long, uppers reaching upper symphysis (Ref. 244). No color pattern, uniformly dark brown (Ref. 244). Caudal fin with a distinct subterminal notch.
唯一的鯊魚具有鰓縫與一個背鰭的 5 對。 (參考文獻 244) 頭部寬廣地平的了與竹片狀的, 吻延長與通常長度超過嘴寬度。 唇溝非常長的, 上面的達到上面的瘉合處.(參考文獻 244) 沒有彩色斑紋, 全黑褐色.(參考文獻 244) 尾鰭有一個明顯的接近端位的凹槽。
A poorly known deep-water bottom-dwelling shark inhabiting insular slopes (Ref. 11146). Possibly oviparous (Ref. 50449).
一種少為人知的深海底棲鯊魚居住於島的斜坡.(參考文獻 11146) 可能地卵生的.(參考文獻 50449)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Oviparous (Ref. 50449).中西太平洋: 只有正模式標本與僅有的標本取自了菲律賓民答那峨海。 一比較， Apristurus herklotsi 的 holotypes 與這種是同種的,因此, 顯示出 Pentanchus 是一個 Apristurus 的資深同種異名。 但是由於缺乏可檢驗的標本, herklotsi 是保留在暫時地中的 Apristurus.
Nakaya, K. and B. Séret, 2000. Re-description and taxonomy of Pentachus profundicolus Smith & Radcliffe, based on a second specimen from the Philippines (Chondrichthyes, Carcharhiniformes, Scyliorhinidae). Ichthyol. Res. 47(4):373-378. (Ref. 47206)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 22 November 2019
人類使用
漁業: 沒有興趣
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [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): 4.1 ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (40 of 100).
