Eptatretus atami, Brown hagfish : fisheries

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Eptatretus atami (Dean, 1904)

Brown hagfish
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Eptatretus atami   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);  atami: Named for Atami, west coast of Sagami Bay, Japan, type locality. (See ETYFish).

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

深海魚; 移住性ではない; 深さの範囲 300 - 536 m (Ref. 31276). Deep-water

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

Northwest Pacific: Japan. Notoriously confused with other unnamed species around Japan (Ref. 31276).

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 61.0 cm TL オス/雌雄の選別がない; (Ref. 31276)

簡単な記述 形態学 | 形態計測学

Gill pouches (GP) 6 pairs with gill apertures closely spaced in a fairly straight line; 1-2 GP at end of dental muscle. Ventral aorta splitting at about GP 5-6. Fused cusps 3/3. Total cusps 47-52. Prebranchial slime pores 12-19. Total pores 71-78. Eyespots faint or absent. Ventral finfold low to vestigial (Ref. 51420).

生物学     用語集 (例 epibenthic)

Attains over 50 cm TL (Ref. 559).

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)

  欠足データ (DD) ; Date assessed: 13 November 2008

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水産業: 商業
FAO - Publication: search | FishSource |

より多くの情報

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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シガテラ(食中毒の名前)
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Otoliths

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インターネットの情報源

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: 部類, | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: ゲノム, ヌクレオチド | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | 生命の木 | Wikipedia: 行く, 検索する | World Records Freshwater Fishing | 動物に関する記録

Estimates based on models

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):  4.5   ±0.80 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 vulnerability (44 of 100).
価格帯 (Ref. 80766):   Low.