Prosanta Chakrabarty: Clues to prehistoric times, found in blind cavefish
Prosanta Chakrabarty: Las claves de tiempos prehistóricos halladas en un pez de cueva ciego
Prosanta Chakrabarty studies fish to help explain the evolution of human beings and our planet. Full bio
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"you only live once,"
"solo se vive una vez",
what I always dreamt of doing:
lo que siempre soñé:
and discovering new species.
y encontrar nuevas especies.
on caves for finding new species.
la búsqueda de nuevas especies en cuevas.
cavefish species out there.
especies de peces de cuevas.
a lot about biology and geology.
información sobre biología y geología.
around them have changed and moved
de su alrededor ha cambiado y se ha movido
en estos agujeritos,
the evolution of sight, by being blind.
por ser ciegos.
that are essentially the same as ours.
en esencia, iguales a los nuestros.
a fish species starts to adapt
vez que una especie de pez se adapta
como una cueva,
they lose their eyes and their eyesight
van perdiendo los ojos y la vista
cavefish like this one here.
como la que vemos aquí.
has evolved in a slightly different way,
ha evolucionado de manera algo distinta,
and biological story to tell us,
geológica y biológica única que contarnos,
when we find a new species.
encontrar nuevas especies.
we described, from southern Indiana.
del sur de Indiana.
the Hoosier cavefish.
el pez de cueva Hoosier.
are cavefishes in Kentucky,
de una cueva de Kentucky en el
when the Ohio River split them
cuando el río Ohio los separó
these subtle differences
estas pequeñas diferencias
behind their blindness.
que había tras su ceguera.
that's super-critical for sight.
que es imprescindible para la vista.
y estas especies también,
all function in that gene,
toda función relacionada con él,
natural experiment
experimento natural
behind our vision,
que hay tras nuestra visión
con cómo podemos ver.
about deep geological time,
del profundo tiempo geológico,
than in this species here.
we described from Madagascar
que hallamos en Madagascar,
"Typhleotris mararybe".
to collect this species.
intentando encontrarla.
full of dead things
llenas de cosas muertas
caca de murciélago
be doing with your life,
que uno puede hacer en su vida,
that it tried to kill us,
le tengo cariño a esta especie
this species in Madagascar,
are 6,000 kilometers away,
a 6 000 km.,
freshwater cavefish
que mide 8 cm
the DNA of these species
el ADN de estas especies
for more than 100 million years,
durante más de 100 millones de años,
continents were last together.
continentes del sur permanecieron unidos.
didn't move at all.
no se movieron.
una medida precisos
these ancient geological events.
sucesos geológicos.
to tell you its name yet,
a decirles su nombre,
it's a new species from Mexico,
que es de México
the only known cave system it's from
el único sistema de cuevas donde vivía
una presa cerca.
de agua potable.
this species' closest relative, yet.
sus parientes más cercanos.
anything else in Mexico,
especie de México,
something new about the geology
algo nuevo sobre la geología
of how to better diagnose
para saber diagnosticar
algunas cegueras.
before it goes extinct too.
antes de que se extingan.
trying to discover and save
a descubrir y preservar
pececillos de cueva
about the geology of the planet
sobre la geología del planeta
ABOUT THE SPEAKER
Prosanta Chakrabarty - IchthyologistProsanta Chakrabarty studies fish to help explain the evolution of human beings and our planet.
Why you should listen
Dr. Prosanta Chakrabarty is an Associate Professor and Curator of Fishes at the Museum of Natural Science and Department of Biological Science at Louisiana State University.
Chakrabarty is a systematist and an ichthyologist studying the evolution and biogeography of both freshwater and marine fishes. His work includes studies of Neotropical (Central and South America, Caribbean) and Indo-West Pacific (Indian and Western Pacific Ocean) fishes. His natural history collecting efforts include trips to Japan, Australia, Taiwan, Madagascar, Panama, Kuwait and many other countries. He has discovered over a dozen new species including new anglerfishes and cavefishes.
The LSU Museum of Natural Science fish collection that Chakrabarty oversees includes nearly half a million fish specimens and nearly 10,000 DNA samples covering most major groups of fishes. He earned his PhD at the University of Michigan and his undergraduate degree is from McGill University in Montreal. He has written two books including A Guide to Academia: Getting into and Surviving Grad School, Postdocs and a Research Job. He is also a former Program Director at the National Science Foundation. He was named a TED Fellow in 2016 and a TED Senior Fellow in 2018.
Prosanta Chakrabarty | Speaker | TED.com