أشلاق (القروش و الشفانين) (sharks and rays) >
Myliobatiformes (Stingrays) >
Gymnuridae (Butterfly rays)
Etymology: Gymnura: Greek, gymnos = naked + Greek, oura = tail (Ref. 45335).
More on author: Bleeker.
Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري مرتبطة بالشعاب; نطاق العمق 28 - 37 m (Ref. 9918). Tropical
Eastern Indian Ocean and Western Central Pacific: India to Indonesia, including Singapore and Thailand.
Length at first maturity / الحجم / وزن / العمر
Maturity: Lm 47.6, range 47 - ? cm
Max length : 106 cm WD ذكر/ مختلط الجنس; (Ref. 58048); common length : 20.0 cm WD ذكر/ مختلط الجنس; (Ref. 27550)
Demersal inshore, in shallow depths to at least 37 m (Ref.58048). Also found offshore (Ref. 9918). Ovoviviparous (Ref. 50449). Smallest individual was 27 cm WD. Caught often by demersal trawl, trammel and gillnet fisheries, and occasionally using tangle nets. Utilized for its meat, but of limited value due to its typically small size (Ref.58048).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
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). Distinct pairing with embrace (Ref. 205).
Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766)
IUCN Red List Status (Ref. 130435: Version 2024-2)
استخدامات بشرية
مصائد: تجاري
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 27.2 - 28.8, mean 28.2 °C (based on 91 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00351 - 0.01718), b=3.09 (2.89 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
المرونه (Ref.
120179): منخفظ جدا, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أكثر من 14 سنة (Fec assumed to be <10).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (43 of 100).