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); wisneri: In honor of American ichthyologist Robert L. Wisner (1921-2005), Scripps Institution of Oceanography, for his contributions to hagfish biology (See ETYFish).
Eponymy: Robert ‘Bob’ Lester Wisner (1912–2005) was an American ichthyologist. [...] (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 330 - 412 m (Ref. 51420). 深水域
Northwest Pacific: southeast of Taiwan.
西北太平洋: 台灣的東南。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 33.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 31276)
简单描述
检索表 | 型态特徵 | 形态测量图
Brachial length 4.58% of total length; six pairs of gill pouches and gill apertures, gill apertures closely spaced in straight line; external opening of pharyngocutaneous duct (PCD) confluent with the most posterior left gill aperture (51 of 59 specimens examined), and much larger than other apertures; fused unicuspid teeth; eye spots present but not clear (Ref. 31545).
臂的长度 4.58% 的全长; 六对鳃囊与鳃孔 , 鳃孔在直线中间隔很密的; 咽头管 (PCD) 的外部开口与最后面的左边鳃孔 (调查的 59 中的 51 标本), 与比其他的孔大很多汇合; 融合的单犬齿; 眼斑有但是不明显.(参考文献 31545)
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 ).西北太平洋: 台灣的東南。
Fernholm, B., 1998. Hagfish systematics. p. 33-44. In J.M. Jørgensen, J.P. Lomholt, R.E. Weber and H. Malte (eds.) The biology of hagfishes. Chapman & Hall, London. 578 p. (Ref. 31276)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
人类利用
渔业: 没有兴趣
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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): 4.0 ±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 (24 of 100).
