A marine fish belonging to the family Scombridae in the order Perciformes of the class Osteichthyes. It is similar to the Spanish bonito, but is slightly thicker and shorter in spindle shape, and its scales are limited to the carapace that develops below the first dorsal fin and the lateral line that follows it. The back of the body is dark blue with many dark diagonal stripes, and there are several black spots reminiscent of moxa points on the side of the body below the pectoral fin, so it is often called "Yaito." Other dialects include Kyuten, Sumagatsuo, Sumagō, and Segatsuo. Total length is 1 meter. It is found in the Western Pacific Ocean south of central Honshu and the Indian Ocean, and is relatively coastal. There are two other known species in the Yaito genus, which live separately in the Eastern Pacific Ocean and the Atlantic Ocean and Mediterranean Sea. It is said that about 60,000 tons of these three species are caught annually. This species is an important resource in small-scale fishing, such as pole and line fishing, but is primarily a secondary target for fishing for skipjack tuna and longline tuna. Its flesh is darker than that of skipjack tuna, and it is used fresh, smoked, dried, canned, and as shaved bonito. [Muneo Okiyama] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
硬骨魚綱スズキ目サバ科に属する海水魚。ソウダガツオに似ているが、やや太短い紡錘形で、鱗(うろこ)は第1背びれの下方に発達する胸甲と、それに続く側線部に限られる。体の背面は暗青色で多くの暗色斜走帯があり、胸びれ下方の体側に灸点(きゅうてん)を思わせる黒斑(こくはん)が数個あるために「ヤイト」とよばれることが多い。ほかにキュウテン、スマガツオ、スマゴ、セガツオなどの方言がある。全長1メートル。本州中部以南の西太平洋からインド洋海域に分布し、比較的沿岸性が強い。ヤイト属にはこのほかに2種が知られており、それぞれ東太平洋と大西洋・地中海に分離して生息している。これら3種が年間6万トン程度漁獲されているといわれる。一本釣り、引縄など小規模漁業においては本種は重要な資源となるが、漁業にとっては本来カツオ釣りやマグロ延縄(はえなわ)などの二次的な対象物にすぎない。肉色はカツオより暗色で、鮮魚、薫製、干物、缶詰、削り節などに利用される。 [沖山宗雄] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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