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Myliobatiformes (Stingrays) >
Myliobatidae (Eagle and manta rays)
Etymology: Myliobatis: Greek, mylo = mill + Greek, + Greek, batis,-idos = a ray (Raja sp.) (Ref. 45335).
More on author: Linnaeus.
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
Biển; Thuộc về nước lợ Sống nổi và đáy; Mức độ sâu 1 - 300 m (Ref. 4440). Subtropical; 60°N - 36°S, 32°W - 58°E
Eastern Atlantic: Madeira, Morocco and the Canary Islands north to the western coasts of Ireland and British Isles and the southwestern North Sea, south to Natal, South Africa. Also throughout the Mediterranean.
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ?, range 60 - ? cm
Max length : 183 cm WD con đực/không giới tính; (Ref. 4440); Khối lượng cực đại được công bố: 14.5 kg (Ref. 40637)
A plain eagleray with a short, rounded snout; disc with broadly angular corners, and upper or lower jaw usually with 7 rows of plate-like teeth (Ref. 5578). Brown or blackish dorsally, white ventrally (Ref. 5578). No caudal fin (Ref. 5578).
Found in shallow lagoons (Ref. 3965), bays and estuaries; also offshore down to at least 95 m (Ref. 5578). Often found in groups (Ref. 5578). Feeds on benthic crustaceans, mollusks and fish. Ovoviviparous (Ref. 50449). Gestation period of 6-8 months, the females give birth to 3-7 young (Ref. 35388). Caught by shore and ski-boat anglers, usually released after capture (Ref. 5578). Flesh is highly esteemed (Ref. 3965).
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).
McEachran, J.D. and B. Séret, 1990. Myliobatididae. p. 67-70. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4440)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Ref.
123201): 11.7 - 19.8, mean 15.2 °C (based on 318 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00123 - 0.01235), b=3.08 (2.82 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 3.6 ±0.54 se; based on food items.
Thích nghi nhanh (Ref.
120179): Rất thấp, thời gian nhân đôi của chủng quần tối thiểu là hơn 14 năm (Fec=3).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (83 of 100).
Climate Vulnerability (Ref.
125649): Moderate to high vulnerability (47 of 100).
Nutrients (Ref.
124155): Calcium = 6.54 [0.80, 118.48] mg/100g; Iron = 0.508 [0.046, 6.020] mg/100g; Protein = 20.4 [15.1, 25.6] %; Omega3 = 0.205 [0.068, 0.558] g/100g; Selenium = 36.1 [6.7, 193.9] μg/100g; VitaminA = 3.95 [0.36, 41.63] μg/100g; Zinc = 0.492 [0.030, 5.489] mg/100g (wet weight);
