First Observation of Movement Rates and Repeated Migration in a Western Atlantic Torpedo (Tetronarce occidentalis) in the Northwest Atlantic Ocean

Dunton, Keith J.; Sparta, Kelsey; Frisk, Michael; Martinez, Christopher M.; Shipley, Oliver N.

doi:10.1656/045.028.0210

Cited by 2 publications

(1 citation statement)

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“…Four of the 8 currently recognized species (Last et al ., 2016) inhabit the Pacific Ocean: the Pacific torpedo, Tetronarce californica (Ayres, 1855) found on both sides of the Temperate North Pacific Ocean, the longtail torpedo, Tetronarce tokionis (Tanaka, 1908) and the Taiwanese torpedo, Tetronarce formosa (Haas & Ebert, 2006) in the Western Pacific Ocean, and the Chilean torpedo, Tetronarce tremens (de Buen, 1959) in the South-eastern Pacific Ocean and part of the Tropical Eastern Pacific (Chile to Costa Rica). Species of Tetronarce are demersal and pelagic along the outer continental and insular shelves (Ebert et al ., 2015), with seasonal use of coastal waters (Dunton et al ., 2021). Torpedo rays feed on bony fishes and small sharks (Parin & Kotlyar, 1985; Ebert et al ., 2015).…”

Section: Introductionmentioning

confidence: 99%

Northernmost record of the Chilean torpedo Tetronarce tremens from tropical coastal waters of the Mexican Pacific

2023

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The Chilean torpedo Tetronarce tremens is recorded for the first time in the Mexican Pacific. A single male specimen was captured by artisanal fishermen using a bottom-set gillnet off San Agustinillo, Oaxaca. The specimen identification was based on morphology and confirmed by DNA barcoding of the cytochrome oxidase subunit I gene and its comparison with sequences available in online repositories. A phylogenetic analysis of Tetronarce resulted in the clustering of three species that inhabit the Pacific Ocean: Tetronarce tremens, Tetronarce californica and Tetronarce tokionis. This study provides the northernmost record of Tetronarce tremens in the Eastern Pacific Ocean, an atypical sighting beyond its native distribution range in tropical and temperate waters off South America.

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