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) >
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); wayuu: Named for the Wayuu aborigines who live on the Guajira Peninsula of Colombia, type locality (See ETYFish).
Eponymy: These species are named after the Wayuu, an aboriginal people who live on the coastal region of the Guajira Peninsula (northern Colombia/north-west Venezuela), the type locality. (Ref. 128868), visit book page.
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 ? - 306 m (Ref. 41105). 深水域
Western Atlantic: known only from the Guajira coast near Puerto Bolivar, Colombia, Caribbean Sea.
西大西洋: 已知只來自在波多黎各，哥倫比亞，加勒比海附近的 Guajira 海岸了。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 21.6 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
Ventral aorta bifurcated into left and right branches at gill pouches one (anteriormost pouch) or two versus bifurcated at the fifth or sixth gill pouches in congeners and P. springeri. Five branchial apertures arranged in a straight line; lengths of efferent branchial ducts unequal with the first duct about twice the length of the last duct. Last branchial duct confluent with pharyngocutaneous duct, last aperture on the left side much larger than other apertures. Gill apertures 5. Slime pores: prebranchial 24; branchial 2; trunk 38-40; tail 9; total 73-75. Cylindrical body, laterally compressed toward spatulate tail. Caudal and ventral finfold well developed. Head, body, tail and finfold pink when fresh, dark violet in alcohol; eyespots faint, branchial region much lighter colored than other parts of the body; gill aperture margins pale (Ref. 41105).
腹面大动脉在鳃囊进入左边与右边的分支之内分叉了一 (最前面的小袋) 或二对分叉在第五的或第六个鳃囊在同类与 P. springeri. 五个鳃孔排列成一条直线了; 鳃的输送管的长度不相等的具有第一个输送管大约长度两倍于最后的输送管。 最后的鳃输送管与咽头管汇合, 在左边上持续孔比其他的孔大很多。 鳃孔 5. 黏液孔: 前鳃 24; 鳃的 2; 躯干 38-40; 尾部 9; 总计 73-75 。 圆筒形的身体, 侧扁的对于竹片状的尾部。 尾部与腹的鳍褶发展良好的。 头部，身体，尾部与鳍褶粉红色新鲜时, 深紫罗兰色当保存在酒精中时; 眼斑模糊又鳃的区域颜色淡很多超过身体的其他部分; 鳃孔边缘灰白的.(参考文献 41105)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
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 ).西大西洋: 已知只來自在波多黎各，哥倫比亞，加勒比海附近的 Guajira 海岸了。
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 2024-2)
人类利用
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00094 - 0.00444), 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 (Ref.
69278): 3.9 ±0.7 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): Low vulnerability (12 of 100).
