Artículos de revistas
Dentition of the apron ray Discopyge tschudii (Elasmobranchii: Narcinidae)
Fecha
2017-10Registro en:
Spath, María Cecilia; Deli Antoni, Mariana Yanel; Delpiani, Gabriela Elina; Dentition of the apron ray Discopyge tschudii (Elasmobranchii: Narcinidae); Wiley Blackwell Publishing, Inc; Journal of Fish Biology; 91; 4; 10-2017; 1166-1177
0022-1112
CONICET Digital
CONICET
Autor
Spath, María Cecilia
Deli Antoni, Mariana Yanel
Delpiani, Gabriela Elina
Resumen
The present study provides quantitative and qualitative analyses of the dentition of Discopyge tschudii. Overall, 193 individuals (99 males and 94 females) of D. tschudii were collected on scientific trawl surveys conducted by the National Institute for Fisheries Research and Development (INIDEP) and commercial vessels in Argentina. Discopyge tschudii has rhombic-shaped teeth, arranged in a semipavement-like dentition; each tooth has an erect cusp slightly inclined posteriorly and holaulachorized root. Mature males have greater tooth lengths than females and immature specimens. Discopyge tschudii exhibits dignathic homodonty and gradient monognathic heterodonty where teeth of the commissural row are shorter than those of the symphyseal and internal rows.