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Eptatretus deani (Evermann & Goldsborough, 1907)

Black hagfish
إضافة ملاحظاتك Fish Watcher
Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Eptatretus deani   AquaMaps   Data sources: GBIF OBIS
ارفع صور و مقاطع فيديو
Pictures | صور قوقل
Image of Eptatretus deani (Black hagfish)
Eptatretus deani
Picture by Fernholm, B.

التصنيف / Names الأسماء الشائعة | مرادفات | Catalog of Fishes(جنس, الانواع) | ITIS | CoL | WoRMS | Cloffa

مكسيني (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);  deani: In honor of American ichthyologist Bashford Dean (1867-1928), American Museum of Natural History, for his work on the embryology of E. stoutii. (See ETYFish).
More on authors: Evermann & Goldsborough.

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

بحري قاعية المعيشة; غير مهاجرة; نطاق العمق 103 - 2743 m (Ref. 31276). Deep-water; 60°N - 27°N, 148°W - 114°W

التوزيع دول | مناطق الفاو | النظام البيئي | الظهور | Point map | مقدمة | Faunafri

Eastern Pacific: southeastern Alaska to central Baja California, Mexico.

Length at first maturity / الحجم / وزن / العمر

Maturity: Lm 38.0  range ? - ? cm
Max length : 63.5 cm TL ذكر/ مختلط الجنس; (Ref. 96339)

وصف مختصر مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي

الأشواك الظهرية (المجموع) : 0; الأشعة الظهرية الناعمة (المجموع) : 0; شوكة شرجية: 0; أشعه شرجية لينه: 0. No true fins - one dorsal finfold, far back, median, very low, continuous with the caudal; caudal moderately broad, and round with ray-like markings; ventral finfold very low, origin somewhat posterior to last gill aperture, extending to anus (Ref. 6885). Prune colored, preserved specimens black; frequently piebald with light spots; the very edges of caudal and ventral finfolds may be light colored (Ref. 6885).

أحياء     المصطلحات (على سبيل المثال epibenthic)

Inhabits mud bottoms (Ref. 2850). Minimum depth reported at 103 m (Ref. 80811).

Life cycle and mating behavior Maturities | التكاثر | Spawnings | Egg(s) | Fecundities | Larvae

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 ). In one study (Ref. 40710), hermaphroditism is exhibited by only 0.2% of the individuals examined.

المرجع الرئيسي Upload your references | مراجع | المنظم | المتعاونين

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 Red List Status (Ref. 130435)

  نقص البينات (DD) ; Date assessed: 12 November 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر للأنسان

  Harmless





استخدامات بشرية

مصائد: غير ذات اهمية
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مزيد من المعلومات

Trophic ecology
عناصر الغذاء
Diet compositions
Food consumptions
Food rations
مفتريسات
Ecology
البيئة
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
الطول- الترددات
Mass conversions
Recruitments
Abundances
Life cycle
التكاثر
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larvae
حركة انتقال اليرقات
Distribution
دول
مناطق الفاو
النظام البيئي
الظهور
مقدمة
BRUVS - Videos
Anatomy
Gill areas
دماغ
عظمة الأذن
Physiology
Body compositions
Nutrients
Oxygen consumptions
نوع السباحة
Swimming speeds
Visual pigment(s)
أصوات الأسماك
Diseases / Parasites
Toxicities (LC50s)
Genetics
جيني
Electrophoreses
Heritabilities
Human related
Aquaculture systems
ملامح تربية الأحياء المائية
سلالات
Ciguatera cases
Stamps, coins, misc.
References
مراجع

أدوات

تقارير خاصة

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مصادر علي الأنترنت

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | البحث في مراقبي الأسماك | CISTI | Catalog of Fishes: جنس, الانواع | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: الوراثة, نيوكلوتيدة | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | OceanAdapt | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | شجرة الحياة | Wikipedia: ذهب, بحث | World Records Freshwater Fishing | سجلات علم الحيوانات

Estimates based on models

Preferred temperature (Ref. 123201): 3.2 - 5.5, mean 4.3 °C (based on 54 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00234 (0.00139 - 0.00396), b=2.93 (2.78 - 3.08), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
مستوى غذائي (Ref. 69278):  3.8   ±0.52 se; based on food items.
المرونه (Ref. 120179):  منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (Fec = 14).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (45 of 100).