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Dichichthys melanobranchus Chan, 1966

Blackgill catshark
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Image of Dichichthys melanobranchus (Blackgill catshark)
Dichichthys melanobranchus
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分类 / Names 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa

Myxini 盲鳗纲 (丑鱼) (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 生态学

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 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 85.0 cm TL (female)

简单描述 检索表 | 型态特徵 | 形态测量图

背棘 (总数) : 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与鳍，吻，鼻孔与鳃的前缘暗褐色的当幼鱼时, 可能一致暗褐色当成鱼时.(参考文献 11146)

生物学特性     字汇 (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).

一种少为人知的深海底栖猫鲨发现于大陆坡上层的泥底了。 (参考文献 11146) 卵生的.(参考文献 50449)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼

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)

主要参考文献 Upload your references | 参考文献 | 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)

世界自然保护联盟红皮书 (Ref. 130435)

  最不相关 (LC) ; Date assessed: 27 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

渔业: 没有兴趣
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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).
营养阶层 (Ref. 69278):  4.0   ±0.5 se; based on size and trophs of closest relatives
回复力 (Ref. 120179):  低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (54 of 100).