NIH VideoCast - How Did Birds Evolve the Capacity to Vocalize

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How Did Birds Evolve the Capacity to Vocalize

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Air date:	Wednesday, February 23, 2022, 3:00:00 PM Time displayed is Eastern Time, Washington DC Local
Views:	Total views: 418 (237 Live, 181 On-demand)
Category:	WALS - Wednesday Afternoon Lectures
Runtime:	00:59:31
Closed captioning:	Check box to display CC outside of the video Note: You can drag the captioning window around and resize it
Description:	NIH Director’s Wednesday Afternoon Lecture Series Dr. Tabin is the George Jacob and Jacqueline Hazel Leder Professor of Genetics and chair of the Department of Genetics at Harvard Medical School. His lab studies the genetic basis by which structure and form are regulated, both during embryonic development to produce the exquisite morphology of the vertebrate embryo and over evolutionary time to generate the beautiful diversity of animal forms on this planet. Birds "sing" using a unique vocal organ called the syrinx. It is an example of the evolution of a novel structure. The Tabin Laboratory has explored the genetic pathways underlying the embryonic formation of the syrinx to understand its morphogenesis and to understand how this adaptation arose. This lecture will address the following topics: how a temporal and spatial gradient of Shh activity drives formation of parallel cartilage rings in the trachea; how altered timing of Shh expression allows the formation of the specialized cartilage of the syrinx; and how a vocal fold program was coopted from the larynx in the evolution of vibratory tissue in the syrinx. For more information go to https://oir.nih.gov/wals

NLM Title:	How did birds evolve the capacity to vocalize? / Cliff Tabin.
Author:	Tabin, Clifford James. National Institutes of Health (U.S.),
Publisher:
Abstract:	(CIT): Dr. Tabin is the George Jacob and Jacqueline Hazel Leder Professor of Genetics and chair of the Department of Genetics at Harvard Medical School. His lab studies the genetic basis by which structure and form are regulated, both during embryonic development to produce the exquisite morphology of the vertebrate embryo and over evolutionary time to generate the beautiful diversity of animal forms on this planet. Birds "sing" using a unique vocal organ called the syrinx. It is an example of the evolution of a novel structure. The Tabin Laboratory has explored the genetic pathways underlying the embryonic formation of the syrinx to understand its morphogenesis and to understand how this adaptation arose. This lecture will address the following topics: how a temporal and spatial gradient of Shh activity drives formation of parallel cartilage rings in the trachea; how altered timing of Shh expression allows the formation of the specialized cartilage of the syrinx; and how a vocal fold program was coopted from the larynx in the evolution of vibratory tissue in the syrinx.
Subjects:	Biological Evolution Birds--growth & development Vocalization, Animal
Publication Types:	Lecture Webcast

NLM Classification:	QL 673
NLM ID:	9918367464106676
CIT Live ID:	44216
Permanent link:	https://videocast.nih.gov/watch=44216

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