Tunisia country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ts.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Fernholm, B. and V.D. Vlaykov, 1984
National Database:

Common names from other countries

Hagfish, Myxine, Pez moco, ... more

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Myxini (Kieferlose) (hagfishes) > Myxiniformes (Hagfishes) > Myxinidae (Hagfishes) > Myxininae
Etymology: Myxine: Ancient Greek word for a slimy fish: myxa, slime; -inus, one who, referring to copious amounts of slime produced by M. glutinosa. (See ETYFish); glutinosa: Latin for viscous or sticky, referring to its seeming ability to turn water into slime. (See ETYFish).
More on author: Linnaeus.

Environment: milieu / climate zone / depth range / distribution range Ökologie

seewasser bathydemersal; standorttreu; tiefenbereich 20 - 1200 m (Ref. 117245), usually 27 - 460 m (Ref. 119696). Boreal; 2°C - 13°C (Ref. 119696); 72°N - 24°N, 89°W - 41°E

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

North Atlantic: Murmansk to the Mediterranean Sea; Greenland to USA. Absent in eastern Mediterranean and Black Sea. Only hagfish in the Northeast Atlantic.

Length at first maturity / Size / Gewicht / Alter

Maturity: L_m ?, range 25 - ? cm
Max length : 95.0 cm TL Männchen/unbestimmt; (Ref. 119696); common length : 30.0 cm TL Männchen/unbestimmt; (Ref. 35388); common length :40 cm TL (female)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Jawless mouth, single nasal aperture, only a single pair of external gill openings, no operculum or covering fold of skin. Grayish or reddish brown above, either plain. Variations in color correspond to the color of the sea bottom.

Benthic with reported depths to 782 off Greenland; 960 m in Northwestern Atlantic; and 1,100 m off Norway (Ref. 119696). Found on muddy bottoms where they hide in the mud. Slime is used for defense. Feeds chiefly on dead and dying fish of varying species by boring into the body and consuming viscera and musculature. Chiefly nocturnal. Its eggs are few in number about 19-30 and large (20-25 mm), the horny shell has a cluster of anchor-tipped filaments at each end.

Life cycle and mating behavior Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven

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 ). Probably breed throughout the year in deep water (Ref. 35388).

Hauptreferenz Upload your references | Referenzen | Koordinator | Partner

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 Rote Liste Status (Ref. 130435)

nicht bedroht (LC) ; Date assessed: 12 November 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: nicht kommerziell

FAO(Publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 1 - 10.2, mean 5.3 (based on 550 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00115 (0.00045 - 0.00296), b=3.03 (2.80 - 3.26), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.5 ±0.0 se; based on diet studies.

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Fec= 20-30).

Prior r = 0.10, 95% CL = 0.07 - 0.15, Based on 1 full stock assessment.

Fishing Vulnerability (Ref. 59153): High vulnerability (58 of 100).

Climate Vulnerability (Ref. 125649): Moderate vulnerability (38 of 100).

Myxine glutinosa Linnaeus, 1758