The southernmost range limit for the hidden angelshark Squatina occulta

MARIA LOURDES ESTALLES; GUSTAVO E. CHIARAMONTE; VICENTE V. FARIA; JUAN M. DÍAZ DE ASTARLOA

Marine Biodiversity Records

BioMedCentral

Año: 2016 vol. 9

Abstract10 Background: Angelsharks (Genus Squatina) are distributed in the southern Southwest Atlantic Ocean between11 southeastern Brazil and central Patagonia. The endangered hidden angelshark Squatina occulta is reported in the12 literature as ranging from Espírito Santo, Brazil to Southern Uruguay. Its presence in Argentine waters has been13 suspected but not verified so far. This study describes and analyzes a specimen of S. occulta found in Puerto14 Quequén 38° 40′S- 58° 50′W, Buenos Aires Province, Argentina.15 Results: An immature male of 578 mm total length and 1,450 g was collected from commercial landings of the16 bottom trawl fishery of Puerto Quequén. The specimen exhibited the coloration pattern, dermal denticle17 distribution, and tooth formula characteristic of S. occulta.18 Conclusions: Squatina guggenheim and S. argentina are already known to occur off Puerto Quequén. The present19 finding confirms the presence of a third species of angelshark in Argentina and constitutes the southernmost20 record of S. occulta.