Avistan por primera vez una cría de orcas frente a las costas de Río Negro
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«No podemos asegurar que la cría haya nacido en la costa rionegrina, pero si que las primeras imágenes fueron tomadas el 9 de julio pasado en la zona de Punta Bermeja», dijo María Leoni Gaffet integrante de la organización «Península Valdez Orcas Reserch», María Leoni Gaffet .
La especialista explicó que los grupos de orcas recorren desde Península Valdez hasta Costa Bermeja donde existe una reserva de lobos marinos de un solo pelo, una de las especies que integra la dieta alimentaria de las orcas.
La organización realiza tomas fotográficas a las que suman la de fotógrafos aficionados, ya que pretenden «atar cabos y ver donde y cuando están» estos cetáceos.
Gaffet afirmó que es un hecho que se la haya visto por primera vez y se la haya identificado frente a las costas de Río Negro.
«Salieron a respirar y se pudo observar los pliegues fetales de la cría que se forman cuando está en el útero de la madre», precisó.
Y agregó: «Esperemos que sobreviva, aunque la mortandad en las crías en general es relativamente baja. Esperamos entonces bautizarla con un nombre».
La modalidad que se utiliza es «que los chicos de las escuelas elijan un nombre, que puede ser mediante un listado previo, porque cuando son pequeñas no se diferencian las hembras de los machos», indicó.
La idea de la organización es renovar las fotografías de manera anual, «porque las orcas van cambiando y lo que se utiliza en el proceso identificatorio son marcas que se les van generando con el paso del tiempo».
Indicó que las orcas se reproducen cada tres o siete años y desarrollan toda su vida desde en grupos familiares y que por eso «es muy importante no separarlos, esa cría va estar toda su vida con su madre», apuntó.
El tiempo de vida de las orcas no está definido pero se estima que las hembras alcanzan los 80 años y los machos unos 55.
«Se trata de una especie sumamente inteligente que se adapta a las distintas regiones del mundo para capturar sus presas», dijo Gaffet y agregó: «No hay registro de ataques realizados en libertad hacia las personas, pero sí existen registros de muerte de personas en los acuarios», concluyó.
Fuente: Télam
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