Gollum attenuatus, Slender smooth-hound

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Gollum attenuatus (Garrick, 1954)

Slender smooth-hound
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Gollum attenuatus   AquaMaps   Data sources: GBIF OBIS
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Image of Gollum attenuatus (Slender smooth-hound)
Gollum attenuatus
Female picture by Duffy, C.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Carcharhiniformes (Ground sharks) 真鯊目 (Ground sharks) > Pseudotriakidae (False catsharks) 擬貓鮫科 (False catsharks)
Etymology: Gollum: Taken from a personnage of the J.R.R.Tolkien works "The Lord of the rings".

Environment: milieu / climate zone / depth range / distribution range 生態學

; 海洋 深海底的; 深度上下限 120 - 660 m (Ref. 26346), usually 400 - 600 m (Ref. 13566).   深水域; - 46°S

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Southwest Pacific: occurs off New Zealand and on rises between New Zealand and the east coast of Australia, New Caledonia, and Fiji just south of the Western Central Pacific. Placement in Proscyllidae provisional, probably will be relocated in Pseudotriakidae.
西南太平洋: 出現外海的紐西蘭與在紐西蘭與澳洲東岸,新加勒多尼亞與斐濟之間的隆起上正好向南方中西太平洋。 放在 Proscyllidae 中暫時的, 可能意志被重新放在 Pseudotriakidae 中。

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm ?, range 70 - ? cm
Max length : 107 cm TL 雄魚/尚未辨別雌雄; (Ref. 6893); 109.2 cm TL (female)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 0; 背的軟條 (總數): 0; 臀棘 0; 臀鰭軟條: 0. Caudal fin without a rippled dorsal margin and ventral lobe but with a strong subterminal notch; vertebral axis of caudal fin little raised above body axis (Ref. 13566).
尾鰭沒有波浪狀的上緣與腹葉但是有一個強的接近端位的凹槽; 尾鰭的椎骨軸在體軸上方稍微向上。 (參考文獻 13566)

生物學特性     字彙 (例如 epibenthic)

An uncommon to common deep-water bottom-dwelling shark found on the outermost continental shelf and upper slope of New Zealand and on adjacent seamounts and submarine banks (Ref. 13566). Seems adapted to waters of about 10°C and 34.8 ppt salinity (Ref. 6893). Feeds on a wide variety of fishes, cephalopods, and other invertebrates (Ref. 13566). Probably in schools (Ref. 13566). Females grow slightly larger than males (Ref. 13566). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother, uterine milk is consumed additionally (Ref. 50449). Two young are born per litter (Ref. 13566).

一稀有的到被發現於最外的大陸棚與紐西蘭的上層斜坡而且在毗連的海洋山脊與海底上岸堤的普遍深海底棲鯊魚.(參考文獻 13566) 似乎適應大約 10個 ° C 與 34.8個 ppt 鹽度的水域。 (參考文獻 6893) 吃各式各樣的魚,頭足類動物與其他的無脊椎動物。 (參考文獻 13566) 可能成群.(參考文獻 13566) 雌性長的稍微大於雄性。 (參考文獻 13566) 卵胎生的, 胚胎吃卵黃囊與其他的卵被產生於母親, 子宮分泌的乳汁被附加地消費。 (參考文獻 50449) 二個幼魚出生每胎。 (參考文獻 13566)

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

Exhibit ovoviparity (aplacental viviparity), embryos feed on yolk and ova, also consume uterine milk (Ref. 50449). With usually 2 young per litter (Ref. 13566). Fetuses eat unfertilized eggs and store consumed yolk in their yolk sacs (Ref. 13566). Distinct pairing with embrace (Ref. 205).西南太平洋: 出現外海的紐西蘭與在紐西蘭與澳洲東岸,新加勒多尼亞與斐濟之間的隆起上正好向南方中西太平洋。 放在 Proscyllidae 中暫時的, 可能意志被重新放在 Pseudotriakidae 中。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

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. 123251)

  無危 (LC) ; Date assessed: 21 June 2017

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的 (Ref. 13566)





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Estimates based on models

Preferred temperature (Ref. 115969): 7.9 - 10.1, mean 9.5 °C (based on 24 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.8125   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00138 - 0.00954), b=3.12 (2.90 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  4.2   ±0.4 se; based on diet studies.
回復力 (Ref. 120179):  非常低的, 最小族群倍增時間超過14 年 (Fec=2).
瀕危性 (Ref. 59153):  High vulnerability (58 of 100) .