Eptatretus grouseri McMillan, 1999

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Eptatretus grouseri   AquaMaps   Data sources: GBIF OBIS
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Eptatretus grouseri
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drawing shows typical fish in this Family.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Myxini 盲鳗纲 (丑鱼) (hagfishes) > Myxiniformes (Hagfishes) > Myxinidae (Hagfishes) > Eptatretinae
Etymology: Eptatretus: Greek, epta = seven + Greek, tretos, -e, -on = with holes (Ref. 45335);  grouseri: Named for David 'Grouser' McMillan, Chief Engineer in the U.S. Merchant Marine, for his continued encouragement of C.B. McMillan's hagfish studies and for his knowledge and love of ships and the seas (Ref. 31788).

Environment: milieu / climate zone / depth range / distribution range 生态学

; 海洋 深海底的; 非迁移的; 深度上下限 ? - 722 m (Ref. 31788).   深水域

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

Southeast Pacific: known only from the Galapagos Islands.
東南太平洋: 已知只來自加拉巴哥群島了。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 37.8 cm TL 雄鱼/尚未辨别雌雄; (Ref. 31788)

简单描述 型态特徵 | 形态测量图

Five or six gill pouches and apertures each side, last gill aperture confluent with the pharyngocutaneous duct on the left side. Multicusps 3 in anterior and 2 in posterior rows, 9 unicusps in each anterior and 8 in each posterior row, total cusps 44; slime pore counts: prebranchial 12-13, branchial 4-5, trunk 44-46, tail 14-15, total slime pores 76-77. Ventral finfold vestigial; caudal finfold well developed (Ref. 31788).
五或六个鳃囊与孔两边 , 最后的鳃孔在左边上与咽头管汇合。 复牙尖 3 在前面的与 2 在后列中,9个单犬齿在每个前面的与 8 在每个后列中, 总尖头 44; 黏液孔计算: 前鳃 12-13, 鳃的 4-5, 躯干 44-46 ,尾部 14-15 ,总黏液孔 76-77. 腹面鳍褶退化的; 尾鳍的鳍褶发展良好的.(参考文献 31788)

生物学特性     字汇 (例如 epibenthic)


Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 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 ).東南太平洋: 已知只來自加拉巴哥群島了。

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

McMillan, C.B., 1999. Three new species of hagfish (Myxinidae, Eptatretus) from the Galápagos Islands. Fish. Bull. 97:110-117. (Ref. 31788)

世界自然保护联盟红皮书 (Ref. 120744)

  最不相关 (LC) ; Date assessed: 10 November 2009

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 6.9 - 11.2, mean 9.5 (based on 7 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00094 - 0.00446), b=2.92 (2.72 - 3.12), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  4.2   ±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).
脆弱性 (Ref. 59153):  Low to moderate vulnerability (30 of 100) .