Eptatretus mccoskeri

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Eptatretus mccoskeri McMillan, 1999

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Eptatretus mccoskeri   AquaMaps   Data sources: GBIF OBIS
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No image available for this species;
drawing shows typical species in Myxinidae.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(, ) | 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);  mccoskeri: Named for John E. McCosker, Senior Scientist, California Academy of Sciences, for providing this new study material, as well for his important contributions to marine biology (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 ? - 215 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 : 32.0 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

Eight gill pouches and apertures each side, last gill aperture confluent with the pharyngocutaneous duct on the left side; 12 multicusps (3 fused cusps in each row), unicusps 36-39 (9,9 to 10,10 unicusps in each anterior and 9,9 to 9,10 in each posterior row), total cusps 48-51; total slime pores 72-74, prebranchial 14-15, branchial 7, trunk 40-42, tail 10-12. Ventral finfold absent or vestigial; caudal finfold with white margin; head slightly lighter than body color, face dark except for small white area around mouth; barbels all white (Ref. 31788).
八个鳃囊与孔两边 , 最后的鳃孔在左边上与咽头管汇合; 12个复牙尖 (在每列中的 3个融合的尖头) ,单犬齿 36-39(9,9 到 10,10个单犬齿在每个前面的与 9,9 到 9,10 在每个后列中), 总尖头 48-51; 总黏液孔 72-74, 前鳃 14-15, 鳃的 7, 躯干 40-42 ,尾部 10-12. 腹面鳍褶不存在或退化的; 尾鳍的鳍褶有白色的边缘; 头部些微较淡超过身体颜色, 面对深色的除了小的白色环绕着嘴的区域; 触须全部白色的.(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. 123251)

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

CITES (Ref. 123416)

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): 8.2 - 14.7, mean 9.6 °C (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 (0.00095 - 0.00438), b=2.93 (2.73 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  4.1   ±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 vulnerability (23 of 100) .