Elasmobranchii (hajar och rockor) (sharks and rays) >
Rhinopristiformes (Shovelnose rays) >
Trygonorrhinidae (Banjo rays, Fiddler rays)
Etymology: Zapteryx: Greek, za = an augmentative particle + Greek, pteryx, wing, fin (Ref. 45335).
More on authors: Müller & Henle.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina bottenlevande; djupintervall ? - 50 m (Ref. 114953). Subtropical; 20°S - 40°S, 58°W - 47°W (Ref. 114953)
Southwest Atlantic: from northern Argentina to southern Brazil.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 46.4  range ? - ? cm
Max length : 53.4 cm TL hane/ej könsbestämd; (Ref. 115173); 59.3 cm TL (female); common length : 50.0 cm TL hane/ej könsbestämd; (Ref. 6077); publicerad maxvikt: 758.00 g (Ref. ); publicerad maxvikt: 758.00 g
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Obtuse snout, broader heart shaped disc. Olive to brownish gray above, without definite markings, dorsal and caudal darker than general ground tint, margins of pectoral and pelvic fins paler. Lower surface grayish or yellowish white, posterior corners of pectoral fins and tips of pelvic fins more or less dusky (Ref. 6902).
Body shape (shape guide): other.
This benthic inshore species is found over soft bottoms to at least 50 m; feeds on benthic crustaceans and polychaetes. Gestation last about a year, produces litters of 1-8 pups in autumn (Ref. 114953). Ovoviviparous (Ref. 50449). Maturity size for males at 43-45 cm TL, females at 42-48 cm TL; birth size at 13-16 cm TL (Ref. 114953).
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).
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: mindre kommeriell
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.6289 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00617 (0.00308 - 0.01235), b=2.96 (2.77 - 3.15), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.5 ±0.6 se; based on size and trophs of closest relatives |
Resiliens (Ref. 120179) |
Låg, lägsta populationsfördubblingstid 4,5-14 år (Fec assumed to be <100). |
Sårbarhet i fisket (Ref. 59153) |
Moderate vulnerability (40 of 100). 🛈 |
Priskategori (Ref. 80766) |
Medium.
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Näringsämnen (Ref. 124155) |
Calcium = 35.9 [5.9, 168.6] mg/100g; Iron = 0.87 [0.23, 2.50] mg/100g; Protein = 19.8 [17.6, 21.7] %; Omega3 = 0.372 [0.152, 0.819] g/100g; Selenium = 15.9 [4.6, 44.3] μg/100g; VitaminA = 12.3 [4.4, 32.7] μg/100g; Zinc = 0.667 [0.317, 1.222] mg/100g (wet weight); |