मिक्सिनी (हैगफिश) (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); cirrhatus: Latin for having tendrils, i.e., presumed to be a species of “lamprey” with barbels (See ETYFish).
More on author: Forster.
पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा
पारिस्थितिकी
समुद्री बाथीड़िमरसल; गैर प्रवासी; गहराई सीमा 0 - 1100 m (Ref. 89422), usually 40 - 700 m (Ref. 31276). Deep-water
Western Pacific: southern and eastern Australia and New Zealand.
आकार / वज़न / आयु
परिपक्व अवधि: Lm ? range ? - ? cm
Max length : 97.0 cm TL पुल्लिंग / अलिंग; (Ref. 101563)
संक्षिप्त वर्णन
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
पृष्ठीय रीढ़ (सम्पूर्ण) : 0; पृष्ठीय सौफट रेज़ (सम्पूर्ण) : 0; गुदा कांटा: 0; ऐनल सौफट रेज़: 0. This species differs from all its congeners except E. caribbeaus, E. goliath, E. menezesi and E. strahani by having 7 pairs of gill pouches and three-cusp multicusps on the anterior and posterior rows of cusps. It differs from E. caribbeaus in number of anterior unicusps (8-11 vs. 11-13), posterior unicusps (7-9 vs. 10-11), total cusps (43-51 vs. 54-58) and prebranchial pores (16-20 vs. 13-15); from E. goliath in number of anterior unicusps (8-11 vs. 11-13), total cusps (43-51 vs. 54) and trunk pores (46-53 vs. 57-58); from E. menezesi in number of posterior unicusps (7-9 vs. 9-12), total cusps (43-51 vs. 52-60), tail pores (10-14 vs. 14-18); from E. strahani by its number of prebranchial pores (16-20 vs. 13-16) (Ref. 85052).
Body shape (shape guide): eel-like.
Occurs on soft bottoms of the continental slope (Ref. 7300). Able to form locally abundant populations and is often associated with inshore reefs (Ref. 85052).
जीवन चक्र और संभोग व्यवहार
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा
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 ).
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)
आईयूसीएन रेड लिस्ट स्थिति (Ref. 130435: Version 2025-2 (Global))
मनुष्यों के लिए ख़तरा
Harmless
मानव उपयोग
मात्स्यिकी: व्यापारिक
साधन
विशेष रिपोर्ट
XML डाउनलोड करें
इंटरनेट स्रोत
मॉडल पर आधारित अनुमान
पसंदीदा तापमान (संदर्भ
123201): 7.8 - 21, mean 12.3 °C (based on 188 cells).
जातिवृति विविधता सूचकांक (संदर्भ
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00295 (0.00160 - 0.00543), b=2.94 (2.77 - 3.11), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
ट्रॉफिक स्तर (संदर्भ
69278): 2.0 ±0.00 se; based on food items.
लौटाव (संदर्भ
120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (Fec assumed to be <100).
मछली पकड़ने की भेद्यता (Ref.
59153): High vulnerability (59 of 100).
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पोषक तत्व (Ref.
124155): Calcium = 9.68 [2.59, 31.93] mg/100g; Iron = 0.327 [0.115, 0.895] mg/100g; Protein = 2.96 [0.00, 6.83] %; Omega3 = 0.316 [0.118, 0.883] g/100g; Selenium = 16.1 [5.3, 54.3] μg/100g; VitaminA = 9.03 [1.76, 45.12] μg/100g; Zinc = 0.249 [0.118, 0.482] mg/100g (wet weight);
