Eptatretus ancon

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Eptatretus ancon (Mok, Saavedra-Diaz & Acero P., 2001)

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No image available for this species;
drawing shows typical species in Myxinidae.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Myxini 盲鳗纲 (丑鱼) (hagfishes) > Myxiniformes (Hagfishes) > Myxinidae (Hagfishes) > Eptatretinae
Etymology: Eptatretus: Greek, epta = seven + Greek, tretos, -e, -on = with holes (Ref. 45335);  ancon: Named for the research vessel B/I ANCON of INVEMAR, from which the holotype was captured.

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

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

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

Maturity: Lm ?  range ? - ? cm
Max length : 22.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 41105)

简单描述 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).
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)

生物学特性     字汇 (例如 epibenthic)

Iteroparous (Ref. 94918).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 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。

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

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. 123251)

  数据缺失 (DD) ; Date assessed: 11 November 2009

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00095 - 0.00438), b=2.93 (2.73 - 3.13), 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).
脆弱性 (Ref. 59153):  Low vulnerability (11 of 100) .