Iberian killer whales assess deep-set fishing lines to detect hooked Atlantic bluefin tuna. First video trial.

(142.3MB, 00:03:57)
撮影日：2023/08/12
撮影場所：Las Bajas, Strait of Gibraltar

Manu Esteve
2026/06/07登録

種類：Orcinus orca
キーワード：Killer whale–fishery interactions Bluefin tuna depredation Line fishing behavior

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動物界 >脊索動物門 >哺乳綱 >鯨偶蹄目 >マイルカ科 >シャチ属 >

Below is the abstract from the article containing this video:

A foraging-related behavior potentially allowing killer whales (Orcinus orca) to identify fishing lines with hooked Atlantic bluefin tuna (Thunnus thynnus) is described from the Strait of Gibraltar. On two days, four whales were video-recorded swimming repeatedly along the fishline, intermittently interacting with it by placing it on their backs or pressing, holding, or pushing it with the fins, snout, melon or belly. These interactions are consistent with assessing line tension or weight to detect the presence of a hooked fish at depth. Digital video images related to the article are available at http://www.momo-p.com/showdetail-e.php?movieid=momo260512oo01a and at http://www.momo-p.com/showdetail-e.php?movieid=momo260512oo02a

Manu Esteve (2026) Iberian killer whales assess deep-set fishing lines to detect hooked Atlantic bluefin tuna. J. Ethol. 10.1007/s10164-026-00890-y