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); yangi: In honor of Hung-Jia (spelled Hung-Chia in Pinyin) Yang, Taiwanese Fisheries Research Institute (Kaohsiung), who collected type series. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 居於水底的; 非遷移的; 深度上下限 20 - 50 m (Ref. 31276). 亞熱帶的
Northwest Pacific: Taiwan and the South China Sea.
西北太平洋: 台灣與南中國海。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 29.6 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
Gill apertures usually 5. Slime pores: prebranchial 17-23; branchial 0; trunk 39-47; tail 7-12; total 68-79. Gill apertures nonlinear and crowded.
鰓孔通常 5. 黏液孔: 前鰓 17-23; 鰓的 0; 軀幹 39-47; 尾部 7-12; 總計 68-79 。 鰓孔非線性而且擁擠。
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 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: 台灣與南中國海。
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)
無危 (LC) ; Date assessed: 13 November 2009
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Estimates based on models
Preferred temperature (Ref.
123201): 24.2 - 25.6, mean 24.8 °C (based on 9 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00092 - 0.00452), b=2.93 (2.73 - 3.13), 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).
