分类 / 名称
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Myxini
盲鳗纲 (丑鱼) (hagfishes) >
Myxiniformes (Hagfishes) >
Myxinidae (Hagfishes) > Eptatretinae
Etymology: Eptatretus: hepta (Gr.), seven; tretos (Gr.), perforated (i.e., with holes), referring to seven gill apertures on what would later be described as Homea banksii (=E. cirrhatus) [range within genus is 6-14 pairs of gill apertures] (See ETYFish); ancon: Named for the research vessel B/I Ancon, from which holotype was captured (See ETYFish).
Eponymy: This refers to the research vessel ‘Ancon’ from which the holotype was collected in the Caribbean. (Ref. 128868), visit book page.
环境:氛围 / 气候带 / 深度上下限 / 分布范围
生态学
海洋 深海底的; 非迁移的; 深度上下限 ? - 488 m (Ref. 41105). 深水域
Western Central Atlantic: off La Punta de los Remedios, Caribbean Sea.
中西大西洋: 外海的 La Punta de los Remedios ,加勒比海。
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 22.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 41105)
简单描述
检索表 | 型态特徵 | 形态测量图
External aperture of its last efferent gill duct and pharyngocutaneous duct separated. Gill apertures nonlinear and crowded. Lengths of efferent gill ducts unequal with anterior ones much longer with length of first about 3 times that of last. Gill apertures 6. Slime pores: prebranchial 26; branchial 0; trunk 45; tail 9; total 80. Caudal and ventral finfold not well developed. Head, body, tail and finfold uniformly light brown in alcohol; eyespots faint, gill aperture margins not pale. Ventral aorta bifurcated between the fourth and fifth gill pouches (Ref. 41105).
Body shape (shape guide): eel-like.
它的最后输出的鳃输送管与咽头管的外部孔分开。 鳃孔非线性而且拥挤。 鳃输送管的长度不相等的与前面的一些更长具有第一个的长度大约 3 倍那最后。 鳃孔 6. 黏液孔: 前鳃 26; 鳃的 0; 躯干 45; 尾部 9; 总计 80 。 尾部与腹的鳍褶不发展良好的。 头部,身体,尾部与鳍褶均匀地当保存在酒精中时的淡褐色; 眼斑模糊的, 不灰白的鳃孔边缘。 腹面大动脉在第四的与第五个鳃囊之间分叉了。 (参考文献 41105)
Iteroparous (Ref. 94918).
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Iteroparous (Ref. 94918). Copulatory organ absent. The gonads of hagfishes are situated in the peritoneal cavity. The ovary is found in the anterior portion of the gonad, and the testis is found in the posterior part. The animal becomes female if the cranial part of the gonad develops or male if the caudal part undergoes differentiation. If none develops, then the animal becomes sterile. If both anterior and posterior parts develop, then the animal becomes a functional hermaphrodite. However, hermaphroditism being characterised as functional needs to be validated by more reproduction studies (Ref. 51361 ).中西大西洋: 外海的 La Punta de los Remedios ,加勒比海。
Mok, H.-K., L.M. Saavedra-Diaz and A.P. Acero, 2001. Two new species of Eptatretus and Quadratus (Myxinidae, Myxiniformes) from the Caribbean Coast of Colombia. Copeia 2001(4):1026-1033. (Ref. 41105)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
渔业: 没有兴趣
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特别资料
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基于模型的估算
系统发育多样性指数 (参考文献 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00204 (0.00095 - 0.00440), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
营养阶层 (参考文献 69278) |
3.9 ±0.7 se; based on size and trophs of closest relatives |
回复力 (参考文献 120179) |
低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100). |
渔业脆弱性 (Ref. 59153) |
Low vulnerability (24 of 100). 🛈 |