Identificacion De Tres Especies Del Genero Squatina (Chondrichthyes, Squatinidae) en La Zona Comun De Pesca Argentino-Uruguaya (Zcpau)

Abstract

Vooren & Da Silva (1991) a través de la utilización de los siguientes caracteres morfológicos externos: presencia o ausencia de una fila medio-dorsal de espinas; forma y tamaño de la aleta pectoral, y patrón de coloración dorsal]]>

Influence of environmental variables on the distribution of Squatina guggenheim (Chondrichthyes, Squatinidae) in the Argentine–Uruguayan Common Fishing Zone

“…Three species of Squatina occur off the coasts of southern Brazil, Uruguay and northern Argentina: S. guggenheim Marini, 1936, S. occulta Silva, 1991, andS. argentina (Marini, 1930) (Milessi et al, 2001). Squatina guggenheim is one of the most widespread endemic elasmobranchs inhabiting bottom waters of the Southwest Atlantic (33 • -41 • S) coastal ecosystem.…”

The southernmost range limit for the hidden angelshark Squatina occulta

“…The hidden angelshark S. occulta is reported in the literature as ranging from Espírito Santo State, Brazil to southern Uruguay in the Argentinean-Uruguayan Common Fishing Zone (Vaz & de Carvalho 2013;Milessi et al 2001). Even though S. occulta's presence was proposed along the Argentinean shelf (to 45°S), this could not be verified so far (Cousseau & Figueroa 2001;Vooren & Klippel 2005;Vaz & de Carvalho 2013).…”

Comparative neurocranial morphology of angelsharks from the south‐western Atlantic Ocean (Chondrichthyes, Elasmobranchii, Squatinidae): implications for taxonomy and phylogeny

“…The taxonomy of extant species of Squatina is based mostly on external morphological characters, such as the shape of nasal barbels, pectoral, caudal and dorsal fins, colour pattern, presence or absence of dorsal tubercles, morphometric proportions of head and tail, and dental formulae (Bigelow and Schroeder 1948; Roux 1977, 1979; Compagno 1984; Vooren and Silva 1991; Milessi et al. 2001; Compagno et al.…”

“…Identification is even more problematic for juvenile specimens because commonly employed diagnostic characters (e.g. squamation, coloration) are usually unreliable (Bigelow and Schroeder 1948; Cousseau 1973; Roux 1977, 1979; Vooren and Silva 1991; Milessi et al. 2001; Vooren and Klippel 2005).…”

“…dumeril (which occurs off northeastern Brazil) , S. guggenheim, S. argentina , and S. occulta. More recently, Milessi et al. (2001) presented a guide for the identification of the three species of Squatina in the Argentine/Uruguayan common fisheries zone, recognizing the same species as Vooren and Silva (1991).…”