كاملات الرؤوس (chimaeras) >
Chimaeriformes (Chimaeras) >
Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: hydro-, combining form of hydor (Gr.), water; lagos (Gr.), hare, i.e., “water rabbit,” probably referring to three pairs of tooth plates, which tend to protrude from the mouth like a rabbit’s incisors (See ETYFish); purpurescens: Latin for purple-tinged, referring to its purplish or plum color (See ETYFish).
More on author: Gilbert.
Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري قاعية المعيشة; نطاق العمق 1150 - 1951 m (Ref. 58302). Temperate
Pacific Ocean: Japan and the Hawaiian Islands.
الحجم / وزن / العمر
Maturity: Lm ?  range ? - ? cm
Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Nakaya, K., 1984. Chimaeridae. p. 17. In H. Masuda, K. Amaoka, C. Araga, T. Uyeno and T. Yoshino (eds.) Fishes of the Japanese Archipelago. Tokai Univ. Press, Tokyo, Japan. 437 p, 370 pls. (Ref. 11099)
IUCN Red List Status (Ref. 130435: Version 2024-2)
استخدامات بشرية
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 1.4 - 1.7, mean 1.5 °C (based on 499 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00137 - 0.00798), b=3.07 (2.86 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.9 ±0.6 se; based on size and trophs of closest relatives
المرونه (Ref.
120179): منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (Assuming Fec <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (54 of 100).