ইলাসমোব্রাঙ্কি (হাঙ্গর এবং রে) (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); naylori: In honor of Gavin Naylor, College of Charleston (Charleston, South Carolina, USA), for contributions and innovative molecular research into the higher classification of chondrichthyans and for his support of the junior author’s work in the Southwest Indian Ridge of the southwestern Indian Ocean. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
সামুদ্রিক তলদেশ বিহারী; গভীরতার পরিসীমা 89 - 1443 m (Ref. 102637). Deep-water; 33°S - 37°S, 55°E - 56°E (Ref. 102637)
বিতরণ
দেশ সমূহ | এফ এ ও এলাকাসমূহ | বাস্তুতন্ত্র | দৃষ্টিগোচর | Point map | প্রচলন | Faunafri
Southwestern Indian Ocean: Southwest Indian Ridge.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 51.1 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 102637); 54.8 cm TL (female)
Short description
সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
কশেরুকা : 114 - 128. This moderately-sized species is distinguished by the following set of characters: short snout
and bluntly rounded; preoral length 4.2-5.5% TL; oral cavity without papillae on the roof of the mouth and tongue; anal-fin base length is equal to or less than 1.5 times second dorsal-fin base length; upper caudal-fin margin with distinct enlarged dermal denticles; body colouration uniformly plain medium to dark brown, with light fin edges and a distinct dark dusky-colored snout (Ref. 102637)..
Collected by bottom trawls and midwater trawls. Maturity size for females at 48.1 cm TL and are immature at 43.0 cm TL, males at 45.2 cm and immature at 38.0 cm TL (Ref. 102637).
Life cycle and mating behavior
Maturities | প্রজনন | Spawnings | Egg(s) | Fecundities | শুককীট
Ebert, D.A. and P.J. Clerkin, 2015. A new species of deep-sea catshark (Scyliorhinidae: Bythaelurus) from the southwestern Indian Ocean. J. Ocean Sci. Found. 15:53-63. (Ref. 102637)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
হাতিয়ার
Special reports
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ইন্টারনেট সুত্র
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).
ট্রফিক পর্যায়ে (Ref.
69278): 4.4 ±0.5 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): নিম্ন/ , সর্বনিম্ন প্রজন দ্বিগুনের সময় ৪.৪-১৪ বৎসর (Preliminary low fecundity).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100).
