Prosanta Chakrabarty: Clues to prehistoric times, found in blind cavefish
Prosanta Chakrabarty: Blinde Höhlenfische geben Hinweise auf prähistorische Zeiten
Prosanta Chakrabarty studies fish to help explain the evolution of human beings and our planet. Full bio
Double-click the English transcript below to play the video.
"you only live once,"
what I always dreamt of doing:
immer geträumt habe:
and discovering new species.
und neue Arten entdecken.
on caves for finding new species.
konzentriert, um neue Spezies zu finden.
cavefish species out there.
Höhlenfischarten da draußen.
wo man suchen muss,
a lot about biology and geology.
über Biologie und Geologie,
around them have changed and moved
bewegt und verändert haben,
the evolution of sight, by being blind.
weil sie blind sind.
that are essentially the same as ours.
die im Prinzip wie unsere sind.
a fish species starts to adapt
Höhlenumgebung anpassen,
they lose their eyes and their eyesight
ihre Augen und ihr Sehvermögen
cavefish like this one here.
augenlose Höhlenfisch, wie dieser hier.
has evolved in a slightly different way,
ein wenig anders entwickelt
and biological story to tell us,
geologische und biologische Geschichte,
when we find a new species.
neuer Spezies so spannend ist.
we described, from southern Indiana.
the Hoosier cavefish.
den Hoosier-Höhlenfisch.
are cavefishes in Kentucky,
when the Ohio River split them
vor Jahrmillionen trennte.
feine Unterschiede
these subtle differences
behind their blindness.
hinter ihrer Blindheit.
that's super-critical for sight.
sehr wichtig für das Sehen.
diese Spezies haben es,
all function in that gene,
die Funktion des Gens verloren
natural experiment
natürliches Experiment,
beteiligten Gene erforschen können
behind our vision,
unseres Sehvermögens gelangen.
about deep geological time,
alten geologischen Zeit,
than in this species here.
we described from Madagascar
so viel wie "große Krankheit",
to collect this species.
sie einzusammeln oft krank wurden.
full of dead things
be doing with your life,
was man im Leben machen kann,
obwohl sie uns fast umgebracht hätte,
that it tried to kill us,
this species in Madagascar,
are 6,000 kilometers away,
6 000 Kilometer entfernten Australien hat.
freshwater cavefish
Süßwasserhöhlenfisch,
the DNA of these species
haben wir herausgefunden,
for more than 100 million years,
voneinander getrennt sind,
continents were last together.
Kontinente zuletzt vereint waren.
didn't move at all.
einen Indikator gegeben,
these ancient geological events.
Ereignisse bestimmen können.
to tell you its name yet,
noch nicht verraten darf.
it's a new species from Mexico,
dass sie aus Mexiko kommt
the only known cave system it's from
ihr einziges Höhlensystem
this species' closest relative, yet.
dieser Spezies noch nicht.
anything else in Mexico,
in Mexiko zu geben,
vielleicht erfahren wir Neues
something new about the geology
of how to better diagnose
von Blindheit besser diagnostizieren.
before it goes extinct too.
bevor sie auch ausstirbt.
trying to discover and save
diese kleinen, bescheidenen,
zu entdecken und zu retten.
about the geology of the planet
über die Geologie unseres Planeten
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