Eptatretus hexatrema (Müller, 1836)
Sixgill hagfish
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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Eptatretus hexatrema AquaMaps Data sources: GBIF OBIS |
分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Myxini 盲鰻綱 (醜魚) (hagfishes) > Myxiniformes (Hagfishes) 盲鰻目 (Hagfishes) > Myxinidae (Hagfishes) 盲鰻科 (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); hexatrema: hexa- (Gr.), six; trema (Gr.) hole, referring to six gill apertures per side (See ETYFish).
More on author: Müller.
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); hexatrema: hexa- (Gr.), six; trema (Gr.) hole, referring to six gill apertures per side (See ETYFish).
More on author: Müller.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Southeast Atlantic: known only from Walvis Bay, Namibia to Durban, South Africa.
東南大西洋: 已知只來自那米比亞的 Walvis 灣到南非的德爾班了。
東南大西洋: 已知只來自那米比亞的 Walvis 灣到南非的德爾班了。
大小 / 重量 / 年齡
簡短描述 檢索表 | 型態特徵 | 形態測量圖
Body shape (shape guide): eel-like.
Commonly burrows in muddy bottoms (Ref. 27121). Feeds mostly by scavenging on dead or disabled fish (Ref. 27121). It is parasitised by the monogenean Myxinidocotyle eptatreti on the body surface (Ref. 124056).
通常在泥底部中掘穴。 (參考文獻 27121) 藉由清理死魚或垂死的魚大部分吃。 (參考文獻 27121)
通常在泥底部中掘穴。 (參考文獻 27121) 藉由清理死魚或垂死的魚大部分吃。 (參考文獻 27121)
生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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 ).東南大西洋: 已知只來自那米比亞的 Walvis 灣到南非的德爾班了。
主要參考資料
上傳您的推薦信 | 參考文獻 | 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)
CITES
Not Evaluated
對人類具威脅
無害處的
人類使用
漁業: 沒有興趣; 水族館: 商業性
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基於模型的估計
首選溫度 (參考文獻 123201): 16.6 - 25.7, mean 23.8 °C (based on 34 cells).
系統發育多樣性指數 (參考文獻 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00094 - 0.00444), b=2.92 (2.72 - 3.12), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (參考文獻 69278): 4.5 ±0.55 se; based on food items.
回復力 (參考文獻 120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).