Eptatretus nelsoni

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Eptatretus nelsoni (Kuo, Huang & Mok 1994)

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Eptatretus nelsoni   AquaMaps   Data sources: GBIF OBIS
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Eptatretus nelsoni
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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).

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

; 海洋 居于水底的; 非迁移的; 深度上下限 50 - 250 m (Ref. 51420).   亞熱帶的

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

Northwest Pacific: southwest Taiwan.
西北太平洋: 台灣西南部。

Length at first maturity / 大小 / 重量 / 年龄

Maturity: Lm 24.0, range 22 - 26 cm
Max length : 25.9 cm TL 雄鱼/尚未辨别雌雄; (Ref. 51420)

简单描述 型态特徵 | 形态测量图

Gill apertures usually 5 (4-6). Slime pores: prebranchial 14-20; branchial 0; trunk 35-39; tail 6-10; total 57-67. Gill apertures nonlinear and crowded.
鳃孔通常 5.(4-6) 黏液孔: 前鳃 14-20; 鳃的 0; 躯干 35-39; 尾部 6-10; 总 57-67. 鳃孔非线性而且拥挤。

生物学特性     字汇 (例如 epibenthic)

A dwarf species; males develop testes at about 20 cm and a 22.4 cm female had elongated eggs; a 26.8 cm specimen had eggs 2.4 cm long; and a 24.4 cm specimen had 11 eggs about 1.5 cm long with polar caps already forming (Ref. 51420).

一个矮小的种; 雄性于大约一个 22.4 公分母鱼已经延长卵的 20个公分广告发育睾丸; 一件 26.8 公分标本有了卵 2.4 公分长; 而且一件 24.4 公分标本公分长具有两极的无边帽已经形成有了 11个卵大约 1.5.(参考文献 51420)

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 ).西北太平洋: 台灣西南部。

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

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)

世界自然保护联盟红皮书 (Ref. 123251)

  次级保育类动物, 见 IUCN 红皮书 (VU) (B1ab(iii)); Date assessed: 13 November 2009

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





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网络资源

Aquatic Commons | BHL | Cloffa | Websites from users | 核实 FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishipedia | Fishtrace | GenBank(基因组, 核苷酸) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | 国家资料库 | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | 树状分类阶层 | Wikipedia(转至, 搜寻) | World Records Freshwater Fishing | 动物学的记录

Estimates based on models

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):  4.0   ±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 (14 of 100) .