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New Whale Species ?

4/20/2015

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Imagen
Beaked whales aren't often sighted (credit: Tom Pusser/NPL)
Imagen
Cuvier's beaked whales are ruled out as the source of the sounds (credit: Tom Pusser/NPL)
A unique whale song is recorded in Antarctica, perhaps a new species of whale may be cruising the icy cold waters of the Antarctic. Evidence for the species is tantalising, rather than strong, as the song could be from one of a few known species of beaked whale.

But it has a structure that doesn’t quite fit any known beaked whales; leaving open the possibility it is from a new species.

Although beaked whales comprise the second-largest family of cetaceans (the group containing whales and dolphins), they are one of the most poorly known groups of all large mammals.

Last year, Deraniyagala‘s beaked whale was confirmed as a new species, bringing the total known to 22.

All beaked whales are extremely elusive, diving deeply and spending very little time at the surface. That makes them difficult to spot. However, they do produce unique sounds that they use to echolocate in the depths, sounds that scientists can use to track and record their movements.


Source: bbc.com

Open access 
Journal of Marine Mammal Science.

Un canto de ballena único se registró en la Antártida, tal vez una nueva especie de ballena puede estar cruzando las aguas heladas de la Antártida. La evidencia de la especie es tentadora, más que fuerte, la canción podría ser de una de las pocas especies conocidas de ballenato de Cuvier (zifios).

Pero tiene una estructura que no acaba de encajar con ninguno de los zifios conocidos; dejando abierta la posibilidad es de una nueva especie.

Aunque los zifios comprenden el segundo mayor de la familia de los cetáceos (el grupo que contiene las ballenas y los delfines), que son uno de los grupos más poco conocidas de todos los grandes mamíferos.

El año pasado, el zifio de Deraniyagala se confirmó como una nueva especie, con lo que el total conocido es de 22.

Todos los zifios son extremadamente difícil de observar, son de buceo profundo y pasan muy poco tiempo en la superficie. Eso los hace difíciles de detectar. Sin embargo, sí producen sonidos únicos que utilizan para ecolocalizar en las profundidades, los sonidos que los científicos pueden utilizar para realizar un seguimiento y registrar sus movimientos.

Fuente: bbc.com 
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