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Dichichthys melanobranchus Chan, 1966

Blackgill catshark
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Dichichthys melanobranchus
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分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Myxini 盲鰻綱 (醜魚) (hagfishes) > Carcharhiniformes (Ground sharks) > Dichichthyidae ()
Etymology: Dichichthys: Name from the combination of the Greek 'dicho'- meaning 'to branch in two' and 'ichthys' for 'fish', with this genus being intermediate between the Galeus-Parmaturus complex and Apristurus.;  melanobranchus: melanos (Gr.), black; branchos (Gr.), gill, referring to blackish color on gill septa. (See ETYFish).

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

海洋 深海底的; 深度上下限 540 - 810 m (Ref. 244). 深水域; 21°N - 18°N

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Northwest Pacific: known from only 3 specimens taken in the South China Sea. Collected less than a degree north of the northwestern boundary of the Western Central Pacific (Ref. 11146).
西北太平洋: 只已知來自採自南中國海的 3件標本了。 收集少於一個中西太平洋的程度西北分界的北側.(參考文獻 11146)

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 85.0 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. Light brown with distal parts and anterior margins of fins, snout, nostrils, and gills blackish brown in young, possibly uniform blackish brown in adults (Ref. 11146).
淡褐色且有末梢部的部份與鰭，吻，鼻孔與鰓的前緣暗褐色的當幼魚時, 可能一致暗褐色當成魚時.(參考文獻 11146)

生物學特性     字彙 (例如 epibenthic)

A poorly known deep-water bottom-dwelling catshark found on mud bottoms of the upper continental slopes (Ref. 11146). Oviparous (Ref. 50449).

一種少為人知的深海底棲貓鯊發現於大陸坡上層的泥底了。 (參考文獻 11146) 卵生的.(參考文獻 50449)

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).西北太平洋: 只已知來自採自南中國海的 3件標本了。 收集少於一個中西太平洋的程度西北分界的北側.(參考文獻 11146)

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. 130435)

  無危 (LC) ; Date assessed: 27 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5010   [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):  4.0   ±0.5 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 to high vulnerability (54 of 100).