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); fernholmi: In honor of Bo Fernholm (b. 1941), Swedish Museum of Natural History, for his contributions to hagfish biology (See ETYFish).
Eponymy: Bo Fernholm (d: 1941) is a Swedish zoologist. [...] (Ref. 128868), visit book page.
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 200 - 400 m (Ref. 31276). 深水域
Northwest Pacific: Taiwan.
西北太平洋: 台灣。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 29.5 cm TL 雄魚/尚未辨別雌雄; (Ref. 31276)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Six pairs of gill pouches and apertures, gill apertures usually crowded in a slightly curved line; the most posterior left gill aperture not confluent with the external opening of the pharyngocutaneous duct (PCD). Eye spots present but not obvious (Ref. 31545). Branchial length less than 3% of total length. Fused cusps 3/2, total cusps 42-50. Prebranchial slime pores 16=23, total pores 64-71. Ventral finfold poorly developed (Ref. 51420).
六對的鰓囊與孔 , 鰓孔通常擁擠了在一些微地曲線; 最後面的左邊鰓孔不與咽頭管 (PCD) 的外部開口匯合。 眼斑呈現但是不是明顯.(參考文獻 31545) 鰓的長度少於 3% 的全長。 融合的尖頭 3/2 ，總尖頭 42-50. 前鰓黏液孔 16=23 ，總孔 64-71. 腹面鰭褶發展不良的。 (參考文獻 51420)
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 ).西北太平洋: 台灣。
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 2024-2)
人類使用
漁業: 沒有興趣
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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).
營養階層 (Ref.
69278): 4.0 ±0.7 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).
