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Scientists discover first warm-bodied fish

5/15/2015

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NOAA FISHERIES WEST COAST
Researchers have discovered the first fish that can keep its entire body warm, much like mammals and birds. The opah, or moonfish, lives in deep, cold water, but it generates heat from its massive pectoral muscles. And it conserves that warmth thanks to body fat and the special structure of blood vessels in its gills.

The opah (Lampris guttatus) doesn’t look like a fierce predator. This tubby fish, about a meter long, swims by flapping its pectoral fins. It lives in oceans around the world, but little is known about its biology. It hunts squid and fish, typically 50 m to 200 m below the surface, where the water is just 10°C and colder. 

Source: news.sciencemag.org
Los investigadores han descubierto el primer pez que puede mantener todo su cuerpo caliente, al igual que los mamíferos y las aves. El opah o peces luna, vive en agua fría profunda, pero genera el calor de sus masivos músculos pectorales, conserva ese calor gracias a la grasa corporal y la estructura especial de los vasos sanguíneos en sus branquias.

El opah (Lampris guttatus) no se ve como un depredador feroz. Este pez rechoncho, de aproximadamente un metro de largo, nada batiendo sus aletas pectorales. Vive en los océanos de todo el mundo, pero poco se sabe sobre su biología. Caza calamares y peces, por lo general 50 ma 200 m por debajo de la superficie, donde el agua es de 10 ° C o más fría.

Fuente: news.sciencemag.org
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