THE BIOLOGIST APPRENTICE
  • Home
  • About
  • Blog
  • Videos
  • Podcast
  • Support
  • Press
  • Contact

Ojos únicos: Tiburones BIOLUMINISCENTES 

9/15/2014

0 Comments

 
Imagen
Top: phylogeny of sharks analyzed by the team and close-ups of their eyes. Bottom: head of the Viper shark with protruded jaws; note how binocular vision is prevented frontally by an enlarged snout. Image credit: Claes JM et al.
According to a new study published in the journal PLoS ONE, the eyes of mesopelagic bioluminescent sharks have a higher rod density when compared to other sharks. This adaptation is one of many these deep-sea creatures use to produce and perceive bioluminescent light in order to communicate, find prey, and camouflage themselves against predators.

The scientists found that the sharks’ eyes contained a translucent area present in the upper eye orbit of the lantern sharks, which might aid in adjusting counter-illumination, or in using bioluminescence to camouflage the fish.

They also found several ocular specializations, such as a gap between the lens and iris that allows extra light to the retina, which was previously unknown in sharks.

Bioluminescent sharks possess higher rod densities in their eyes, which might provide them with improved temporal resolution.
Source: http://bit.ly/Zn3rVy
Según un nuevo estudio publicado en la revista PLoS ONE, los ojos de los tiburones bioluminiscentes mesopelágicas tienen una densidad superior en comparación con otros tiburones. Esta adaptación es uno de los muchas que estas criaturas de aguas profundas utilizan para producir y percibir la luz bioluminiscente para comunicarse, encontrar presas, y camuflarse de sus depredadores. 

Los científicos descubrieron que los ojos de los tiburones contienen una zona translúcida presente en la órbita interna superior del ojo de los tiburones, lo que podría ayudar en la lucha contra el ajuste de iluminación, o en el uso de la bioluminiscencia para camuflar los peces. 

También encontraron varias especializaciones oculares, tales como un hueco entre la lente y el iris que permite que entre luz adicional a la retina, que era previamente desconocido en los tiburones. 

Los tiburones bioluminiscentes tienen densidades más altas de la barra en sus ojos, lo que podría proporcionarles una mejor resolución temporal.
Fuente: http://bit.ly/Zn3rVy
0 Comments



Leave a Reply.

    Blog Archive
    ​
    This blog isn't active anymore
    ​Disclaimer

    All the pictures on this blog and social networks belong to their respective authors and proper credits are given. Photos are used for illustrative and educational purposes only.

    Todas las fotografías de este blog y redes sociales son propiedad de sus respectivos autores, se mencionan los respectivos créditos. Estas fotos son únicamente utilizadas con fines ilustrativos y educativos.


    Archives

    March 2019
    January 2019
    December 2018
    November 2018
    October 2018
    August 2018
    May 2018
    April 2018
    March 2018
    February 2018
    August 2017
    July 2017
    June 2017
    May 2017
    January 2017
    December 2016
    October 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015
    December 2014
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014
    June 2014
    May 2014
    April 2014
    March 2014
    February 2014
    January 2014
    December 2013
    November 2013
    October 2013
    September 2013
    August 2013
    July 2013
    June 2013
    July 2012

    RSS Feed

Powered by Create your own unique website with customizable templates.
  • Home
  • About
  • Blog
  • Videos
  • Podcast
  • Support
  • Press
  • Contact