Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
সামুদ্রিক তলদেশ বিহারী; গভীরতার পরিসীমা 220 - 1100 m (Ref. 114953). Temperate; 42°N - 21°N, 119°E - 146°E (Ref. 114953)
Northwest Pacific: Japan and Taiwan.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 69.3 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 94813)
Inhabits shelf edges to about 1000 m (Ref. 41299). Ovoviviparous (Ref. 50449). Maturity size of males at ca. 68 cm TL; birth size at ca. 20 cm TL (Ref. 114953). Reported to be infrequently captured as by-catch, but of no commercial importance (Ref. 94813).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449).
Mould, B., 1994. A world list of rays. The scientific nomenclature and distribution of the recent Batoidea (Batoidea, Elasmobranchii, Chondrichthyes). University of Nottingham, [UK]. 82 p. (Ref. 8630)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
মৎস্য: আকর্ষণবিহীণ
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=0.01479 (0.00665 - 0.03288), b=2.96 (2.77 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 4.2 ±0.6 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): অত্যন্ত কম , সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৪ বৎসর (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (48 of 100).
