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)
(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); mcconnaugheyi: In honor of Ronald R. McConnaughey, marine technician and diver, Scripps Institution of Oceanography, who helped develop gear used to capture type. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
海洋 居于水底的; 非迁移的; 深度上下限 43 - 415 m (Ref. 31276). 深水域
Eastern Central Pacific: off southern California and in lower Gulf of California.
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 48.2 cm TL 雄鱼/尚未辨别雌雄; (Ref. 96339)
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 ).中太平洋東部: 外海的南加州與在加州灣下游中。
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)
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
Estimates based on models
Preferred temperature (Ref. 123201
): 8.8 - 15.8, mean 12.7 °C (based on 32 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00094 - 0.00446), b=2.92 (2.73 - 3.11), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
营养阶层 (Ref. 69278
): 4.3 ±0.5 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
): Moderate vulnerability (38 of 100).