Bathytoshia centroura (Mitchill, 1815)
Roughtail stingray
Bathytoshia centroura
photo by Gasparini, J.L.

Family:  Dasyatidae (Stingrays), subfamily: Dasyatinae
Max. size:  300 cm TL (male/unsexed); max.weight: 300 kg
Environment:  demersal; depth range 3 - 270 m,
Distribution:  Western Atlantic: antitropical; from western and southern USA and Brazil to Argentina; including the Gulf of Mexico. Eastern Atlantic populations refer to Bathytoshia lata according to Last et al, 2016 (Ref. 114953).
Diagnosis:  Diagnosis: Large specimens of Dasyatis centroura are recognizable by their thorny tails, by the large size and wide spacing spacing of their mid-dorsal bucklers, and by the conspicuous tubercles or bucklers on the outer parts of their discs; in smaller specimens the large tubercles have not yet developed on the tail (Ref. 6902). It differs from Dasyatis sabina, D. guttata and Himantura schmardae in the shape of disc; it resembles Dasyatis say and D. americana in shape of disc, but it can be distinguished from D. say by the fact that the tail lacks any trace of a cutaneous fold above, and from D. americana by its much narrower ventral tailfold (Ref. 6902). Description: A very large stingray; disc rhombic, the anterior margins forming a blunt angle (Ref. 6902, 39859, 81259). Dorsal surface entirely, but irregularly rough, with a mid-dorsal row of large thorny tubercles provided with striate bases and erect cusps; a few similar tubercles scattered over pectoral fins and head (Ref. 81259). Tail whip-like and strongly spinous, with numerous rows of small spines; tail with a short dorsal ridge behind the sting and a poorly developed ventral fold, which is long long, but quite low and not easily seen (Ref. 7251). Colouration: Dorsal side dark brown to olivaceous-brown; the lower surface whitish, with or without dark pectoral margins; tail blackish behind the sting (Ref. 6902, 81259).
Biology:  Dasyatis centroura is a coastal species (Ref. 81259), found over sandy and muddy bottoms (Ref. 3169). It feeds on bottom-living invertebrates and fishes (Ref. 3169). Ovoviviparous (Ref. 6901). Wings marketed fresh, smoked, dried-salted; used for fishmeal and oil. Harmful to shellfish banks; dangerous to bathers and fishers due to its poisonous spine. May attain well over 100 cm TL. Warm season visitor to coastal waters (Ref. 6902).
IUCN Red List Status: Least Concern (LC); Date assessed: 03 March 2007 Ref. (120744)
Threat to humans:  venomous
Country info:   

Entered by: Froese, Rainer - 01.05.91
Modified by: Capuli, Estelita Emily - 30.05.17
Checked by: Capuli, Estelita Emily - 30.05.17

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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