Observations of coastal aggregations of the broadnose sevengill shark (Notorynchus cepedianus) in Chilean waters

• Published in: Journal of fish biology Vol. 98; no. 3; pp. 870 - 873
• Main Authors: Bustamante, Carlos, García‐Cegarra, Ana M., Vargas‐Caro, Carolina
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.03.2021; Wiley Subscription Services, Inc
• Subjects: adults; Aggregation; Animal Distribution; Animals; Aquaculture; Chile; citizen science; coastal shark; Coastal waters; Cyclooxygenase 1 - genetics; DNA barcoding; Ecological aggregations; Female; females; Fisheries - trends; Fishers; Freshwater fishes; genes; Marine fishes; Notorynchus; Notorynchus cepedianus; Pacific Ocean; Salmon; Shallow water; Sharks; Sharks - physiology; Surface water records; video cameras; Chile; Pacific Ocean; citizen science; DNA barcoding; coastal shark
• ISSN: 0022-1112; 1095-8649; 1095-8649
• DOI: 10.1111/jfb.14591

The presence of four sharks was documented in coastal waters of Antofagasta (Chile) using an unmanned aerial video camera. Fishers took advantage of this aggregation to catch and sold three adult broadnose sevengill sharks Notorynchus cepedianus. Species identity was determined by using the cox1 gene. One additional video was later recorded 3000 km south of Antofagasta, and shows a large female interacting with a salmon farming facility. Shallow water records of N. cepedianus were previously undocumented in Chilean waters, yet historically have provided an opportunistic event to fishers in Chile.