Work

Pacific bluefin tuna ( Thunnus orientalis ) bycatch in the Atlantic Ocean

Year: 2026

Type: article

Abstract: A large tuna was hooked by a Japanese longline fishery in the high seas near the Republic of Namibia. This fishing ground is mainly utilized for Thunnus albacares, Thunnus obesus and Thunnus alalunga by Japanese tuna longliners. Because the tuna was larger than the common size of these species, the specimen was sampled for genetic species identification and morphological measurements. The fish, which weighed 107 kg without gills and gut, was unexpectedly identified as Thunnus orientalis by a thorough analysis of morphology, mitochondrial genes and nuclear single-nucleotide polymorphisms.

Source: Journal of Fish Biology

DOI: 10.1111/jfb.70463

Authors: Yohei Tsukahara, Atsushi Tawa, Masashi Sekino, Kenji Nohara, Nobuaki Suzuki

Institutions: Japan Fisheries Research and Education Agency, Tokai University

Language: English

Topic: Marine and fisheries research

Subfield: Global and Planetary Change

Field: Environmental Science

Domain: Physical Sciences

SDG: Life below water

Open Access status: hybrid

Estimated APC paid: $4,480