Elasmobranchi (squali e razze) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Bythaelurus: bythos (Gr.), depths of the sea, referring to its deepwater habitat; ailouros (Gr.), cat, probably an allusion to the vernacular “catshark,” so named for its cat-like eyes. (See ETYFish); incanus: Latin for quite gray, referring to its body and fin coloration. (See ETYFish).
More on authors: Last & Stevens.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino batidemersale; distribuzione batimetrica 900 - 1000 m (Ref. 76945). Deep-water
Distribuzione
Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri
Eastern Indian Ocean: Australia.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 45.4 cm TL maschio/sesso non determinato; (Ref. 76945)
Short description
Morfologia | Morfometria
This species possess the following set of characters: short and broad head, its width 13.5% TL, length 19.1% TL; short snout, broadly rounded, its length 2.5 in head length; triangular anterior nasal flaps; large mouth, its width 10.3% TL, length 4.6% TL; short labial furrows confined to mouth corners; small papillae on roof of mouth; elongate abdomen, the pectoral-pelvic space 2.8 times length of pectoral-fin anterior margin, 1.7 times interdorsal space; distance of pre-dorsal about 42% TL, 10.9 times eye length; distance of anal-caudal 6.3% TL; origin of first dorsal-fin slightly behind origin of pelvic fin, while the origin of the second is well behind anal-fin mid-base; length of anal-fin base 1.2 times the second dorsal-fin base length, subequal to interdorsal space; weakly tricuspidate flank denticles, very slender crowns, their length more than twice their width; minute teeth mainly with 4 small cusps, central pair longer than those adjacent, about 100 rows in each jaw; upright flank denticles weakly tricuspidate; precaudal centra about 93, before upper caudal-fin origin; uniformly greyish brown body (Ref. 76945).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Last, P.R. and J.D. Stevens, 2008. Bythaelurus incanus sp. nov., a new deepwater catshark (Carcharhiniformes: Scyliorhinidae) from Northwestern Australia. pp. 123-128. In Last, P.R., White, W.T. & Pogonoski, J.J. (eds.): Descriptions of New Australian Chondrichthyans. CSIRO Marine and Atmospheric Research Paper no. 22. (Ref. 76945)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Informazioni ulteriori
Nomi ComuniSinonimiMetabolismoPredatoriEcotossicologiaRiproduzioneMaturitàDeposizioneSpawning aggregationFecundityUovaEgg development
Age/SizeAccrescimentoLength-weightLength-lengthLength-frequenciesMorfometriaMorfologiaLarveDinamica popolazioni larvaliReclutamentoAbbondanzaBRUVS
BibliografiaAcquacolturaProfilo di acquacolturaVarietàGeneticaElectrophoresesEreditarietàMalattieElaborazioneNutrientsMass conversion
CollaboratoriImmaginiStamps, Coins Misc.SuoniCiguateraVelocitàModalità di nuotoArea branchialeOtolithsCervelliVista
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00176 - 0.00714), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 4.3 ±0.5 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Preliminary low fecundity).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (35 of 100).
