Distribution extension of the Spectacled Petrel (Procellaria conspicillata) off the Argentine Continental Shelf and oceanic adjacent waters

MAXIMILIANO HERNANDEZ; JUAN PABLO SECO PON; SOFIA COPELLO; ALEXANDER BOROWICZ

ARARAJUBA: REVISTA BRASILEIRA DE ORNITOLOGIA

SOC BRASILEIRA ORNITOLOGIA

Lugar: Pelotas, RS; Año: 2019 vol. 27 p. 135 - 139

0103-5657

The Spectacled Petrel Procellaria conspicillata is endemic of the Tristan da Cunha Archipelago, in the South AtlanticOcean. However, it is scarcely detected in waters off Argentina beyond its traditional distribution along the southwest Atlanticduring the breeding season. This study compiles distributional records of Spectacled Petrel for the target area (chiefly between 38oSto 46oS and 23oW to 57oW) obtained in situ, from non-systematic observations at sea, between 2015 and 2018 (totaling 4 trips);and by literature review. Nineteen new sightings of the species are presented. In 46 sightings a total of 65 individuals were recordedchiefly within waters of the Argentine continental shelf (< 200 m) (46%) and oceanic adjacent waters (54%). The bulk of thesightings (95%) were obtained during the species breeding season. In addition, we report the southernmost record of the species inoceanic waters for the southwest Atlantic (46o10'S; 57o06'W).