Stomach content records of albacore (Thunnus alalunga) and bluefin tuna (Thunnus thynnus) in the North Atlantic Drift Region focusing on the Bay of Biscay between 2004 and 2011, supplement to: Pinnegar, John Keith; Goñi, Nicolas; Trenkel, Verena M; Arrizabalaga, Haritz; Melle, Webjørn; Keating, James; Óskarsson, Guomundur J (2015): A new compilation of stomach content data for commercially important pelagic fish species in the northeast Atlantic. Earth System Science Data, 7(1), 19-28

• Main Author: Goñi, Nicolas
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2014
• Subjects: Event label; Date/Time of event; Longitude of event; Latitude of event; Identification; Predator taxa; Uniform resource locator/link to reference; Predator, mass; Comment; Predator, length; Predator stomach content, total mass; Prey taxa; Prey, mass; Fishing rod; Trolling fishing; Midwater trawl; Basin Scale Analysis, Synthesis and Integration EURO-BASIN; North Atlantic; Northeast Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.826992; https://doi.pangaea.de/10.1594/PANGAEA.826992

The tuna stomach database from AZTI-Tecnalia corresponds to 7 years of sampling from 2004 to 2011. Due to the absence of continuity in the different projects dealing with the feeding ecology of tunas, the sampling could not be performed every year for both species, and no sample was collected in 2008. However, the fish stomach content record contents composition - by prey weight - of 1525 albacore caught in the Bay of Biscay and surrounding waters of the North Atlantic Drift Region in 2005 (n=397), 2006 (n=196), 2007 (n=37), 2009 (n=95), 2010 (n=566) and 2011 (n=234) and of 686 bluefin tunas caught in the Southeastern Bay of Biscay in 2004 (n=32), 2005 (n=36), 2006 (n=3), 2009 (n=257), 2010 (n=233) and 2011 (n=125). Samples have been obtained from scientific research surveys (using a variety of different fishing gears), from commercial fisheries catches, from individual fish voluntarily sampled by recreational fishermen and from fish accidentally stranded on coastlines. Each predator is identified by an ID and its length and wet weight are given. In case the wet weight could not be measured, it was estimated through a length-weight relationship equation and is indicated in the comment for the Predator mass column. The total weight of each prey is given, as well as the weight of each prey taxonomic group in each stomach.