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TUNNY (Thunnus thynnus)

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Originally appearing in Volume V27, Page 410 of the 1911 Encyclopedia Britannica.
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TUNNY (Thunnus thynnus) , one of the largest fishes of the See also:family of mackerels, belongs to the genus of which the bonito (Th. pelamys) and the albacores (Th. albacora, Th. alalonga, &c.) are equally well-known members. From the latter the tunny is distinguished by its much shorter See also:pectoral fins, which reach backwards only to, or nearly to, the end of the first dorsal fin. It possesses nine See also:short finlets behind the dorsal, and eight behind the anal fin. Its See also:colour is dark bluish above, and greyish, tinged and spotted with silvery, below. The tunny is a pelagic See also:fish, but periodically approaches the See also:shore, wandering in large shoals, within well-ascertained areas along the See also:coast. It not infrequently appears in small companies or singly in the See also:English Channel and in the See also:German Ocean, probably in pursuit Tunny. of the shoals of pilchards and See also:herrings on which it feeds. The regularity of its See also:appearance on certain parts of the coasts of the Mediterranean has led to the See also:establishment of a systematic See also:fishery, which has been carried on from the See also:time of the Phoenicians to the See also:present See also:day. Immense See also:numbers of tunnies were caught on the See also:Spanish coast and in the See also:Sea of See also:Marmora, where, however, this See also:industry has much declined. The Sardinian tunnies were considered to be of See also:superior excellence. The greatest number is now caught on the See also:north coast of See also:Sicily, the See also:fisheries of this See also:island supplying most of the preserved tunny which is exported to other parts of the See also:world. In See also:ancient times the fish were preserved in See also:salt, and that coming from See also:Sardinia, which was specially esteemed by the See also:Romans, was known as Salsamentum sardicum.

At present preference is given to tunny preserved in oil. Many of the fishes, especially the smaller ones, are consumed fresh. The tunny occurs also in the Pacific and is much sought for by anglers on the coast of See also:

southern See also:California, where tuna-fishing has become a fashionable See also:sport; but several other See also:species seem to take its See also:place in the Indo-Pacific ocean. It is one of the largest fishes, attaining to a length of ten ft. and to a See also:weight of more than a thousand pounds. In connexion with the extremely active See also:life of these fishes allusion should be made to the fact, first ascertained in 1839 by See also:John (See also:brother of See also:Sir See also:Humphry) See also:Davy, that the temperature of the See also:blood of a tunny may be considerably higher than that of the surrounding See also:water, a See also:discovery which disposed of the time-honoured See also:division of vertebrate animals into warm-blooded and See also:cold-blooded. The See also:variations and movements of the tunny and albacores were studied with See also:special care by See also:King See also:Carlos of See also:Portugal, who published in 1899 a large illustrated memoir entitled A Pesca do See also:alum no See also:Algarve in 1898 (See also:Lisbon). This memoir is accompanied by excel-See also:lent figures of the different species of Thunnus and charts of their See also:distribution in the See also:Atlantic.

End of Article: TUNNY (Thunnus thynnus)

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