Eptatretus longipinnis, Longfinned hagfish

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Eptatretus longipinnis Strahan, 1975

Longfinned hagfish
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Eptatretus longipinnis   AquaMaps   Data sources: GBIF OBIS
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drawing shows typical species in Myxinidae.

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, ) | ITIS | CoL | WoRMS | Cloffa

メクラウナギ (hagfishes) > Myxiniformes (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);  longipinnis: longus (L.), long; pinnis (L.) fins, referring to well-developed fold on ventral fins that extends to branchial region. (See ETYFish).

Environment: milieu / climate zone / depth range / distribution range 生態学

底生の; 移住性ではない; 深さの範囲 14 - 40 m (Ref. 85052). Temperate

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Eastern Indian Ocean: Off Robe and off Cape Douglas, South Australia.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 62.7 cm TL オス/雌雄の選別がない; (Ref. 85052)

簡単な記述 形態学 | 形態計測学

This species is distinguished from all its congeners by its ventral fin fold beginning anterior to the first pair of gill apertures (within anterior 27-28% TL) (Ref. 85052).

生物学     用語集 (例 epibenthic)

Occurs on soft bottoms of the continental shelf (Ref. 7300). Maximum depth from Ref. 58018.

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

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 ).

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

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)

IUCNのレッドリストの状況は (Ref. 130435)

  攻撃されやすい (VU) (B2ab(iii)); Date assessed: 10 November 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

FAO - Publication: search | FishSource |

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共通名の
類義語
代謝
捕食動物
生態毒性
繁殖
成熟
放精
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生産力

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参考文献
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シガテラ(食中毒の名前)
速度
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カマ
Otoliths

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Estimates based on models

Preferred temperature (Ref. 123201): 15 - 18.7, mean 17.4 °C (based on 24 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
栄養段階 (Ref. 69278):  4.2   ±0.41 se; based on food items.
回復力 (Ref. 120179):  低い, 4.5年~14年の倍増期間の最小個体群 (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (45 of 100).