Prosanta Chakrabarty: Clues to prehistoric times, found in blind cavefish
بروسانتا شاكرابارتي: العثور على أدلة ترجعُ إلى عصور ما قبل التاريخ في السمكة الكهفية العمياء
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,"
"أنتم تعيشون مرة واحدة فقط،"
what I always dreamt of doing:
أحلم بالقيام به:
and discovering new species.
مخلوقات جديدة.
on caves for finding new species.
للعثور على مخلوقات جديدة.
cavefish species out there.
الأسماك الكهفية الحديثة.
a lot about biology and geology.
الكائنات الحية/بيولوجيا، والأرض/جيولوجيا.
around them have changed and moved
قد تغيرت وتحركت
الثقوب الصغيرة،
the evolution of sight, by being blind.
عن طريق كونها عمياء.
that are essentially the same as ours.
مثل أعيننا.
a fish species starts to adapt
تبداُ المخلوقات السمكية في التكيف
they lose their eyes and their eyesight
تفقدُ أعينها وبصرها
cavefish like this one here.
بلا عيون.
has evolved in a slightly different way,
بطريقة مختلفة قليلاً،
and biological story to tell us,
وبيولوجية لتخبرنا عنها،
when we find a new species.
على مخلوقات جديدة.
we described, from southern Indiana.
من جنوب ولاية إنديانا.
the Hoosier cavefish.
سمكة الكهف هوزير.
are cavefishes in Kentucky,
الكهوف في ولاية كنتاكي،
when the Ohio River split them
فصلهم نهر أوهايو
these subtle differences
behind their blindness.
العمى الذي أصابهم.
that's super-critical for sight.
شديد الحساسية للبصر.
all function in that gene,
وظائف هذا الجين،
natural experiment
الجميلة
behind our vision,
وراء حاسة البصر لدينا،
الطريقة التي نرى بها.
about deep geological time,
الغامض للأرض،
than in this species here.
we described from Madagascar
"تيفليوتريس ماراريبي."
to collect this species.
المخلوقات.
full of dead things
بالأشياء الميتة
be doing with your life,
القيام به بحياتكم.
that it tried to kill us,
أنها حاولت قتلنا في الواقع،
this species in Madagascar,
يعيش في مدغشقر،
are 6,000 kilometers away,
6،000 كيلومتر،
freshwater cavefish
ثلاثة إنشات وتعيش في مياه عذبة
the DNA of these species
المخلوقات الحية
for more than 100 million years,
100 مليون سنة،
continents were last together.
القارات الجنوبية ملتصقة معاً.
didn't move at all.
على الإطلاق.
these ancient geological events.
القديمة.
هي جديدة جداً
to tell you its name yet,
باسمها،
it's a new species from Mexico,
جديدة من المكسيك،
the only known cave system it's from
الوحيد المعروف
بالقرب منه.
this species' closest relative, yet.
هذه المخلوقات بعد.
anything else in Mexico,
في المكسيك،
something new about the geology
حول جيولوجيا الأرض
of how to better diagnose
الكائنات لتشخيص أفضل
before it goes extinct too.
انقراضها أيضاً.
trying to discover and save
الوديعة العمياء
about the geology of the planet
كوكب الأرض
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