分类 / Names
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Teleostei >
Gadiformes (Cods) >
Macrouridae (Grenadiers or rattails)
Etymology: Hymenocephalus: Named for its transparent membrane-like head covering (‘‘hymen head’’) and fragile nature of head bones (Ref. 100825).
More on author: Gilbert.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 底中水层性; 深度上下限 340 - 1348 m (Ref. 58302). 深水域
Widespread but patchy and discontinuous. Atlantic: Caribbean and continental slope of northern South America. Pacific: off subtropical western and eastern Australia, several islands in the southern Pacific (New Caledonia, Vanuatu, Wallis & Futuna, Marquesas Islands), and off Hawaii. Not recorded from eastern Atlantic nor Indian Ocean.
中太平洋東部: 夏威夷群島。 西北大西洋。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 20.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 37108)
简单描述
检索表 | 型态特徵 | 形态测量图
This species is distinguished by the following characters: a black-colored large-headed fish, with head size 21-25% TL; pelvic fin rays 13-14; pectoral fin rays 13-16; projecting snout, 20-24% HL; head bones are papery thin and often distorted; no barbel; small orbit diameter, 20-24% HL; interorbital width 60-70% HW; infraorbital width 20-25% HL; postorbital-preopercular interspace 10-14% HL; preopercular supporter is very small and forked; gill rakers 21-25; ventral striae reaching to about ? from pelvic fin bases to periproct; small otolith with rounded outline, no predorsal lobe developed; colliculi separated; otholith length to height (OL:OH), 1.0-1.2; total colliculum length to pseudocolliculum length (TCL:PCL) is 2.2-2.8 (Ref. 98298).
身体纵深而深色的，大的，和凹状的头部。 小的眼与宽的眼间隔。 吻是高的，细的，和膜状又中央的突起。 鳍条是弱的。 小又可抑压的齿在双颚上出现在狭带状。 身体黑色。 躯干与尾部暗褐色的.(参考文献 37108)
Found on the continental slope (Ref. 75154). Benthopelagic (Ref. 58302).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
中太平洋東部: 夏威夷群島。 西北大西洋。
Cohen, D.M., A.W. Ebeling, T. Iwamoto, S.B. McDowell, N.B. Marshall, D.E. Rosen, P. Sonoda, W.H. Weed III and L.P. Woods, 1973. Fishes of the western North Atlantic. Part six. New Haven, Sears Found. Mar. Res., Yale Univ. (Ref. 37108)
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Estimates based on models
Preferred temperature (Ref.
123201): 5.1 - 10.2, mean 7.1 °C (based on 622 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00219 (0.00111 - 0.00431), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
