The ingestion of large plastics by recreationally caught southern bluefin tuna Thunnus maccoyii off southern Australia

Sources, sinks and transformations of plastics in our oceans: Review, management strategies and modelling

“…4(e) shows the approximation to 8 million tons in 2010. In addition, Yick and Travers (2022) state that 243.978 million tonnes of plastic in the ocean have been estimated, and the sum of both the accumulation of macro and microplastics shown by our model is very close to that value. The value of the model is 294.2.…”

Identifying Potential High-Risk Zones for Land-Derived Plastic Litter to Marine Megafauna and Key Habitats within the North Atlantic

“…Macroplastic ingestion has been documented in many tuna species including yellowfin (Thunnus albacares) (Chagnon et al, 2018;Fujieda et al, 2014;Manooch and Mason, 1983;Sajikumar et al, 2013), bluefin (Thunnus thynnus) (Romeo et al, 2015;Varela et al, 2022;Yick and Travers, 2022), blackfin (Thunnus atlanticus) (Manooch and Mason, 1983), the little tunny (Euthynnus alletteratus) (Manooch et al, 1985), skipjack (Katsuwonus pelamis) (Hyrenbach et al, 2021;Neto et al, 2020), bigeye (Thunnus obesus) (Fujieda et al, 2014), and albacore (Thunnus alalunga) (Hyrenbach et al, 2021;Romeo et al, 2015) tunas. Both swordfish (Xiphias gladius) (Romeo et al, 2015) and the black marlin (Makaira indica) (Fujieda et al, 2008) have been also been documented to ingest macroplastic litter.…”

“…In the Mediterranean, Romeo et al (2015) found that 32.4 % of bluefin tuna (Thunnus thynnus) and 12.5 % of swordfish (Xiphias gladius) caught in the Mediterranean contained macroplastic fragments in their stomachs (Romeo et al, 2015). Plastic objects were generally fragments or sheets (Hyrenbach et al, 2021), such as pieces of plastic bag (Sajikumar et al, 2013), sweet and food wrappers (Varela et al, 2022) and fragments of food containers (Yick and Travers, 2022).…”