George Lauder
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georgelauder.bsky.social
George Lauder
@georgelauder.bsky.social
Prof. at Harvard University: research on fish biorobotics, biomimetics, biomechanics, morphology, shark locomotion and skin function, and fish schooling
people.fas.harvard.edu/~glauder/
and
https://scholar.google.com/citations?user=s-FMUNgAAAAJ&hl=e
1. #Tuna have well-developed bilateral keels extending to the right and left sides at the caudal peduncle area just in front of the tail. This movie shows the keel area during locomotion in yellowfin tuna. What is the function of keels in #tuna? A🧵 and new hypothesis.
February 3, 2025 at 6:28 PM
Reposted by George Lauder
Our new paper is out as OA! shorturl.at/BueUy

Tuna keels aren't just for hydrodynamics—they're mechanosensory! 🐟 They contain a modified lateral line, possibly adapted to detect stimuli in high-noise environments

@georgelauder.bsky.social @jackiew8.bsky.social + Dylan Wainwright + Connor White
January 28, 2025 at 7:56 PM
What is the function of the elongate tail in elasmobranch #rays? A 🧵 and a new hypothesis. A paper with @juliachaumel.bsky.social in @royalsociety.org Proceedings B (shorturl.at/PmfYD) shows that the tail of cownose rays (and a few other species studied so far) has an elaborate lateral line.
January 22, 2025 at 5:18 PM
What is the significance of the tremendous diversity of #shark skin #denticles? Presenting our experimental approach to understanding this at the Atlanta #SICB2025 meetings. Come to the session for all things shark skin!
December 31, 2024 at 5:56 PM
Why do #fish swim in #schools? A🧵and new hypothesis. Schooling could help fish avoid predators, navigate, communicate, find mates and food, and save energy. Here we propose and test a new hypothesis: https://tinyurl.com/yc764d74
December 3, 2024 at 12:15 AM
Do #fish swimming in a #school actually save energy? A🧵on this as our paper in @eLife https://elifesciences.org/articles/90352 by @TheYangfanZHANG addresses this question. This is a challenging issue to study: energy use by a school should be compared to solitary locomotion
December 3, 2024 at 12:16 AM
Do #fish swimming in a #school actually save energy? Our paper on this in eLife elifesciences.org/articles/90352 addresses this question. This is a challenging issue: energy use by a school needs to be compared to solitary locomotion on a per gram basis under the same swimming conditions.
February 21, 2024 at 6:27 PM
The shark #denticle #multiverse will be on display at #sicb2024 this week. See talks in the
@SICB_DCB_DVM
sessions. So much diversity, so little time ... below the #ontogeny of sleeper shark denticles from Vaz et al. 2023: mdpi.com/1424-2818/15...
January 2, 2024 at 8:13 PM
The shark #denticle #multiverse will be on display at #sicb2024 this week. See talks in the @SICB_DCB_DVM sessions. So much diversity, so little time ... below the #ontogeny of sleeper shark denticles from Vaz et al. 2023: https://www.mdpi.com/1424-2818/15/11/1105
December 3, 2024 at 12:16 AM
Getting ready for #SICB2024, and all things #shark skin! Testing patches of skin to measure the shear stress (friction) of water moving over the skin, and how #denticle orientation alters flow patterns.
December 3, 2024 at 12:16 AM
Getting ready for #SICB2024, and all things #shark skin! Testing patches of skin to measure the shear stress (friction) of water moving over the skin, and how #denticle orientation alters flow patterns.
January 2, 2024 at 7:28 PM
Our accessible Sharks Summer REU is running in 2024. Unique opportunity for disabled undergraduates interested in sharks, paleobiology, developmental biology, and bio-inspired design. Apps due Jan 19. #NSFFunded #DisabledInSTEM.
Please repost and spread the word!
accessiblesharks.wordpress.com
Accessible Sharks REU
Accessible Sharks: A Summer Research Experience for Disabled Undergraduates Image is a grayscale scientific illustration of a smooth dogfish (Mustelus canis). on a white background. The image was orig...
accessiblesharks.wordpress.com
December 19, 2023 at 3:58 PM
This past summer Elizabeth Sibert, Gareth Fraser, and I ran an "Accessible Sharks" REU program as part of our NSF grant. Story here ... and we're running it next summer too!
https://news.harvard.edu/gazette/story/2023/08/accessible-science-students-disabilitiesnts-sharks-denticles-hydrodynamics/
August 19, 2023 at 5:48 PM
Why might #fish in a #school swim behind one another? A🧵.This question arises because being behind another fish involves #swimming in faster flow. A cyclist can draft because oncoming velocity is reduced. A thrust wake is like a cyclist facing a leader with a large fan.
December 3, 2024 at 12:16 AM
The #shark #denticle #multiverse is vast, and @MarBioMoll will present at #SICB2023 on ontogenetic changes in skin denticles in leopard sharks. So much variation and so few previous studies of denticle ontogeny @SICB_ @SICB_DCB_DVM
December 3, 2024 at 12:16 AM
Gearing up for the #SICB2023 meetings … first up is the #shark #denticle #multiverse! Talks by @dfbvaz and Tess Avery will describe remarkable changes in denticles during ontogeny in the Portuguese dogfish, accompanied by lots of variation around the body @SICB_ @SICB_DCB_DVM
December 3, 2024 at 12:16 AM
The fields of #robotics and #ecology and #evolution would not seem to have that much in common. A thread on why robotic mechanisms are so useful and constitute another “comparative method” in the toolbox of organismal biologists, discussed here: https://bit.ly/3Hv85Hr
December 3, 2024 at 12:16 AM
Very excited to have been a small “fishy” part of the next @DeepLabCut with @valdisanto out now in @naturemethods (https://go.nature.com/3Jzo72d). Multi-animal pose estimation and tracking led by Mackenzie W. Mathis @TrackingActions and Alexander Mathis @TrackingPlumes
Multi-animal pose estimation, identification and tracking...
DeepLabCut is extended to enable multi-animal pose estima...
go.nature.com
December 3, 2024 at 12:16 AM
A small robotic fish powered by human heart cells??!! A thread on biohybrid robots to celebrate the large collaborative effort just out in Science (https://bit.ly/3Jj13VS)
December 3, 2024 at 12:16 AM
Most fish have very flexible bodies as seen here in an anesthetized trout. But how stiff should fish be to swim effectively, and how can fish (and robots) modulate their body stiffness to improve swimming performance? – a thread.
December 3, 2024 at 12:21 AM
What role can #robotics play in #ecology and evolutionary biology? – a thread. My talk at #SICB2022 has the goal of discussing why and how I think that robotics should be thought of as a “comparative method” @SICB_DCB_DVM.
December 3, 2024 at 12:21 AM
The amazing skin of sharks: a (longish) thread! For some time we’ve been studying the structure and function of #shark #skin and #biomimetic models of shark surfaces. Covered with amazing dermal #denticles (#scales) sharks have skin with a rough texture composed of tiny teeth.
December 3, 2024 at 12:21 AM
How do #fish swim? A thread! Since the 1990s I’ve been wondering if the canonical categories used to describe fish #locomotion are valid. This classic diagram from Lindsey (1978) has been published in almost every fish biology text book and review article on aquatic propulsion.
December 3, 2024 at 12:21 AM
Many thanks to @MariaKaimaki for her very nice report on our paper published in @BioinspBiomim on #robotic models of #fish #fin function during swimming led by @Orang_Hutan_ #robots #locomotion http://shorturl.at/rQT13
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December 3, 2024 at 12:21 AM
A bit more on #fish #fins in series! Using a simple #robotic model our paper (https://bit.ly/2WYMNzd) led by grad student Dave Matthews @Orang_Hutan_ shows experimentally how flow from one fin affects the fin behind. Visualization of flow interactions using #PIV is mesmerizing!
December 3, 2024 at 12:27 AM