Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien demersaal; diepte 15 - 400 m (Ref. 6763). Subtropical; 62°N - 16°N, 19°W - 37°E
Eastern Atlantic and Mediterranean Sea.
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm 15.8, range 17 - 18 cm
Max length : 56.4 cm TL mannelijk / geslacht onbekend; (Ref. 86700); common length : 22.0 cm TL mannelijk / geslacht onbekend; (Ref. 3397); max. gepubliceerd gewicht: 940.00 g (Ref. 40637)
The shoulder spines can inflict, painful stings. Usually found buried in the sand or mud. Equipped with an acoustic apparatus that generates both acoustic and electric pulses. Electric discharge activity shows two temporal patterns: 1) reflexive discharges of short duration (milliseconds), elicited by mechanical stimulation, and 2) those of much longer duration (several seconds) observed only during the summer spawning period (Ref. 10011). Low-frequency spontaneous discharge activity (5-10 Hz), with a sexual dimorphism in discharge amplitude is also said to exist. This species suggestively represents a transitional form in the evolution of electric organs in fishes (Ref. 10577). Oviparous, eggs, larvae and juveniles are pelagic (Ref. 6763). Utilized fresh (Ref. 9987).
Roux, C., 1990. Uranoscopidae. p. 897-898. 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. 2. (Ref. 7366)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gebruik door de mens
Visserij: van minder commercieel belang; sportvis: ja
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Estimates based on models
Preferred temperature (Ref.
123201): 11.2 - 17, mean 14.2 °C (based on 228 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01202 (0.00979 - 0.01477), b=3.04 (2.98 - 3.10), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trofisch niveau (Ref.
69278): 4.4 ±0.70 se; based on food items.
Generation time: 7.4 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
Weerstandsvermogen (Ref.
120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (tm=2).
Fishing Vulnerability (Ref.
59153): High vulnerability (56 of 100).
Nutrients (Ref.
124155): Calcium = 69.2 [40.3, 127.0] mg/100g; Iron = 1.04 [0.66, 1.74] mg/100g; Protein = 19 [18, 20] %; Omega3 = 0.445 [0.303, 0.666] g/100g; Selenium = 30.9 [15.8, 60.3] μg/100g; VitaminA = 26.2 [9.2, 80.2] μg/100g; Zinc = 0.603 [0.430, 0.869] mg/100g (wet weight); based on
nutrient studies.