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); bobwisneri: Replacement name of E. wisneri McMillan 1999, which became a junior homonym of Paramyxine wisneri Kuo, Huang & Mok 1994 when Paramyxine was subsumed into Eptatretus; the name continues to honor Robert (“Bob”) L. Wisner (1921-2005), McMillan’s colleague at Scripps Institution of Oceanography, for “invaluable” assistance with her hagfish research and other contributions to ichthyology. (See ETYFish).
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 512 - 577 m (Ref. 123790). 深水域
Southeast Pacific: known only from the Galapagos Islands (Ref. 31788).
東南太平洋: 已知只來自加拉巴哥群島了。 (參考文獻 31788)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 32.8 cm TL 雄魚/尚未辨別雌雄; (Ref. 31788); 35.6 cm TL (female)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
This species is distinguished from its congeners except E. gomoni, E. luzonicus, E. octatrema, E. okinoseanus by the following characters: eight pairs of gill apertures that are well-spaced and arranged in an almost straight line; teeth 3/2 multicusps pattern; total cusps 44-47 (vs. 50 in E. gomoni, 38-40 in E. octatrema); prebranchial pores 9-11 (vs. 12-13 in E. gomoni, 22-26 in E. octatrema, 13-17 in E. okinoseanus); trunk pores 43-47 (vs. 57-58 in E. gomoni, 63-68 in E. octatrema, 54-61 in E. okinoseanus); total pores 73-76 (vs. 91-93 in E. gomoni, 77-82 in E. indrambaryai, 84-88 in E. luzonicus, 104-117 in E. octatrema, 87-97 in
E. okinoseanus); nasal-sinus papillae absent (vs. one single nasal-sinus papilla in E. luzonicus, two bilaterally symmetrical nasal-sinus papillae in E. octatrema) (Ref. 123790).
在兩邊上的八個鰓與孔 , 在左邊上的最後的鰓孔與咽頭管匯合; 10個複牙尖, 在每個前面的列中 3個融合的尖頭的圖案與 2 在每個後列中; 單犬齒 9 每個前面的與 8個每個後列; 總尖頭 44; 總黏液孔 76 ，前鰓孔 9 ，鰓孔 7 ，軀幹孔 46-47, 尾部孔 13-14; 臉部大部份白色, 包括嘴與唇觸鬚的基底; 其他的觸鬚深色的, 偶而有白色的斑點或頂端; 眼斑明顯的﹐大的與形狀不規則的; 腹面鰭褶退化的或不存在; 尾鰭的鰭褶發展良好的.(參考文獻 31788)
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 ).東南太平洋: 已知只來自加拉巴哥群島了。 (參考文獻 31788)
McMillan, C.B., 1999. Three new species of hagfish (Myxinidae, Eptatretus) from the Galápagos Islands. Fish. Bull. 97:110-117. (Ref. 31788)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 11 November 2009
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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 (0.00092 - 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 to moderate vulnerability (26 of 100).
![Image of Eptatretus bobwisneri (Bob Wisner\](/images/thumbnails/gif/tn_MYXINIT0.gif "Image of Eptatretus bobwisneri (Bob Wisner\")