ইলাসমোব্রাঙ্কি (হাঙ্গর এবং রে) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Apristurus: a-, Latin privative, i.e., without; pristis, from pristes (Gr.), sawyer (but here meaning saw); oura (Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related Pristiurus (=Galeus). (See ETYFish); ovicorrugatus: Name from Latin 'ovi' for egg; genitive singular of ovum) and 'corrugatus' or corrugated; referring to the corrugated egg cases (unique for the genus Apristurus); treated as an adjective..
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
সামুদ্রিক ব্যথিডিমারসাল সমুদ্র তলদেশবিহারী; গভীরতার পরিসীমা 410 - 550 m (Ref. 128660). Subtropical
Indo-West Pacific: Australia.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 46.7 cm TL (female)
Short description
সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
This species is distinguished by the following combination of characters: when alive/fresh, eyes with shiny white iris; head moderately long and relatively narrow, its length 23.8% LT, interorbital space 6.4% LT; snout moderately elongate, preoral length is 10.0% LT and preorbital length 10.9% LT; mouth wide, its width 9.5% LT; pelvic–anal space 5.9% LT; anal fin is large, base length 15.2% LT, posterior margin 11.5% LT; prepectoral length is relatively long, about 21.1% LT; labial furrows long, not confined to mouth corners, uppers are longer than lowers (3.8 vs. 2.4% LT); enlarged denticles absent on upper or lower caudal fin; duodenum of intestine moderately sized, intestinal spiral valves 15; monospondylous centra 35; precaudal-diplospondylous vertebrae 33; precaudal centra 68; females mature by 46.7 cm LT; egg case small (5.04-6/06 cm long), with 5-7 strong T-shaped ridges on dorsal and ventral surfaces (Ref. 128660).
Life cycle and mating behavior
Maturities | প্রজনন | Spawnings | Egg(s) | Fecundities | শুককীট
White, W.T., H.L. O'Neill, F. Devloo-Delva, K. Nakaya and S.P. Iglésias, 2023. What came first, the shark or the egg? Discovery of a new species of deepwater shark by investigation of egg case morphology. J. Fish. Biol. 2023:1-18. (Ref. 128660)
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 = No PD50 data [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): 3.8 ±0.4 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): উচ্চ, সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৫ মাস (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (37 of 100).
