分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Myxini
盲鰻綱 (醜魚) (hagfishes) >
Myxiniformes (Hagfishes)
盲鰻目 (Hagfishes) >
Myxinidae (Hagfishes)
盲鰻科 (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); deani: In honor of American ichthyologist Bashford Dean (1867-1928), American Museum of Natural History, for his work on the embryology of E. stoutii (See ETYFish).
Eponymy: Dr Bashford Dean (1857–1928) was an American zoologist, ichthyologist and acknowledged expert on mediaeval armour. [...] (Ref. 128868), visit book page.
More on authors: Evermann & Goldsborough.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海底的; 非遷移的; 深度上下限 103 - 2743 m (Ref. 31276). 深水域; 60°N - 27°N, 148°W - 114°W
Eastern Pacific: southeastern Alaska to central Baja California, Mexico.
東太平洋: 阿拉斯加州東南方到中央的 Baja 加州，墨西哥。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 38.0 range ? - ? cm
Max length : 63.5 cm TL 雄魚/尚未辨別雌雄; (Ref. 96339)
背棘 (總數) : 0; 背的軟條 (總數) : 0; 臀棘: 0; 臀鰭軟條: 0. No true fins - one dorsal finfold, far back, median, very low, continuous with the caudal; caudal moderately broad, and round with ray-like markings; ventral finfold very low, origin somewhat posterior to last gill aperture, extending to anus (Ref. 6885). Prune colored, preserved specimens black; frequently piebald with light spots; the very edges of caudal and ventral finfolds may be light colored (Ref. 6885).
沒有真實的鰭 - 一背部的鰭褶, 遠在背上﹐中央的﹐和非常低的, 與尾鰭續接在一起; 尾部的一般寬, 而且周圍有像鰭條一樣的斑紋; 腹面鰭褶非常低的, 起源略微在被延伸至肛門的最後的鰓孔後面.(參考文獻 6885) 修剪色彩，保存的標本黑色; 時常具有淡色的斑點的斑紋; 尾部與腹鰭褶的最邊緣可能是淡色的.(參考文獻 6885)
Inhabits mud bottoms (Ref. 2850). Minimum depth reported at 103 m (Ref. 80811).
棲息於泥底。 (參考文獻 2850)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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 ). In one study (Ref. 40710), hermaphroditism is exhibited by only 0.2% of the individuals examined.東太平洋: 阿拉斯加州東南方到中央的 Baja 加州，墨西哥。
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
人類使用
漁業: 沒有興趣
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Estimates based on models
Preferred temperature (Ref.
123201): 3.2 - 5.5, mean 4.3 °C (based on 54 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00234 (0.00139 - 0.00396), b=2.93 (2.78 - 3.08), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 3.8 ±0.52 se; based on food items.
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec = 14).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (45 of 100).
