Common names from other countries
Myxini (peixes-bruxa) (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); cheni: In honor of vertebrate zoologist Jianshen (“Johnson”) T. F. Chen (1898-1988), Director, National Taiwan Museum (Taipei), for “important” contributions to the taxonomy of Taiwanese fishes. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marinhas batidemersal; não migratória; intervalo de profundidade 180 - ? m (Ref. 31276). Deep-water
Northwest Pacific: southwest of Taiwan (northern South China Sea).
Tamanho / Peso / Idade
Maturity: Lm ?  range ? - ? cm
Max length : 37.7 cm TL macho/indeterminado; (Ref. 31276)
Descrição suscinta
Morfologia | Morfometria
5 pairs gill pouches and gill apertures, closely spaced in a straight line; branchial slime pores absent; fused unicuspid teeth 3/3; dental formula: 10 + 3/3 + 10; no whitish mid-dorsal stripe.
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
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)
Status na Lista Vermelha da UICN (Ref. 130435)
CITES (Ref. 128078)
Not Evaluated
Ameaça para os humanos
Harmless
Uso pelos humanos
Mais informação
Idade/TamanhoCrescimentoPeso-comprimentoComprimento-comprimentoFrequências de comprimentoMorfometriaMorfologiaLarvasDinâmica larvalRecrutamentoAbundância
ReferênciasAquaculturaPerfil para aquaculturaEstirpesGenéticaElectrophoresesHereditariedadeDoençasProcessamentoConversão de massa
ColaboradoresFotosStamps, Coins Misc.SonsCiguateraVelocidadeTipo de nataçãoÁrea branquialOtólitosCérebrosVisão
Ferramentas
Relatórios especiais
Baixar XML
Fontes da internet
Estimates based on models
Preferred temperature (Ref.
115969): 2.8 - 6.4, mean 4.2 (based on 63 cells).
Índice de diversidade filogenética (Ref.
82804): PD
50 = 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).
Nível Trófico (Ref.
69278): 4.1 ±0.7 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (28 of 100).