أشلاق (القروش و الشفانين) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
Environment: milieu / climate zone / نطاق العمق / distribution range
البيئة
بحري القاع, usually 20 - 80 m (Ref. 114953). Subtropical; 20°N - 35°N, 115°E - 125°E (Ref. 114953)
Northwest Pacific: China to Japan, including Taiwan.
الحجم / وزن / العمر
النضج: Lm ?  range ? - ? cm
Max length : 68.0 cm TL ذكر/ مختلط الجنس; (Ref. 114953); العمر: 15 سنين (Ref. 126841)
Commonly found on inner continental shelf. Biology poorly known (Ref. 114953).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Eschmeyer, W.N. (ed.), 2006. Catalog of fishes. Updated database version of April 2006. Database dump. Catalog databases as made available to FishBase in April 2006. (Ref. 56787)
IUCN Red List Status (Ref. 130435: Version 2025-1)
استخدامات بشرية
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Phylogenetic diversity index (مرجع
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00131 - 0.00604), b=3.25 (3.08 - 3.42), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
مستوى غذائي (مرجع
69278): 4.5 ±0.80 se; based on food items.
Generation time: 10.7 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
المرونه (مرجع
120179): منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (Preliminary low fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (47 of 100).
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