AEOP summer internships - Biomechanics of Ultrafast Movements
Green, P.A., and Patek, S.N. 2018. Mutual assessment during ritualized fighting in mantis shrimp (Stomatopoda). Proceedings of the Royal Society B: Biological Sciences 285, 20172542.
Proceedings of the Royal Society B
Safe and effective conflict resolution is critical for survival and reproduction. Theoretical models describe how animals resolve conflict by assessing their own and/or their opponent's ability (resource holding potential, RHP), yet experimental tests of these models are often inconclusive. Recent reviews have suggested this uncertainty could be alleviated by using multiple approaches to test assessment models.
Patek Lab graduate student Patrick Green led a new study published today in the Proceedings of the Royal Society B and featured in Duke Today. Photo by Roy Caldwell.
Green, P.A., and Patek, S.N. (2018). Mutual assessment during ritualized fighting in mantis shrimp (Stomatopoda). Proceedings of the Royal Society B: Biological Sciences 285, 20172542.
Patek Lab Manager Gracie Farley presented research at the Society for Integrative and Comparative Biology's annual conference in San Francisco. Her conference presentation was featured by the journal Science. Check it out!
Liu, F., R. L. Chavez, S. N. Patek, A. Pringle, J. J. Feng, and C.-H. Chen. 2017. Asymmetric drop coalescence launches fungal ballistospores with directionality. Journal of the Royal Society Interface 14 (132): 1-11. DOI: 10.1098/rsif.2017.0083
Journal of the Royal Society Interface
Thousands of fungal species use surface energy to power the launch of their ballistospores. The surface energy is released when a spherical Buller's drop at the spore's hilar appendix merges with a flattened drop on the adaxial side of the spore. The launching mechanism is primarily understood in terms of energetic models, and crucial features such as launching directionality are unexplained.
Through a collaboration led by Duke Mechanical Engineering Professor Chuan-Hua Chen's lab, Patek and Prof. Anne Pringle (U. Wisconsin) have published a new paper in the Journal of the Royal Society Interface explaining the energetics, fluid dynamics, and directional control of fungal ballistospore launching. The study has received press coverage, including an article in the New York TImes.
Patek and visiting professor Adam Summers (University of Washington) published a primer on invertebrate biomechanics in Current Biology.
Muñoz, M.M., P.S. L. Anderson, S. N. Patek. 2017. Mechanical sensitivity and the dynamics of evolutionary rate shifts in biomechanical systems. Proceedings of the Royal Society B 284 (1847). DOI: 10.1098/rspb.2016.2325
Proceedings of the Royal Society B
The influence of biophysical relationships on rates of morphological evolution is a cornerstone of evolutionary theory. Mechanical sensitivity—the correlation strength between mechanical output and the system's underlying morphological components—is thought to impact the evolutionary dynamics of form–function relationships, yet has rarely been examined. Here, we compare the evolutionary rates of the mechanical components of the four-bar linkage system in the raptorial appendage of mantis shrimp (Order Stomatopoda).
Patek, S. N. and A. P. Summers. 2017. Primer: Invertebrate Biomechanics. Current Biology 27(10): R371-R375. DOI: 10.1016/j.cub.2017.04.012
Invertebrate biomechanics focuses on mechanical analyses of non-vertebrate animals, which at root is no different in aim and technique from vertebrate biomechanics, or for that matter the biomechanics of plants and fungi. But invertebrates are special — they are fabulously diverse in form, habitat, and ecology and manage this without the use of hard, internal skeletons. They are also numerous and, in many cases, tractable in an experimental and field setting.
Patek Lab undergraduate, Samantha Kisare, received the Rast Award in Comparative Organismal Biology at Duke's 2017 graduation. Samantha worked in the Patek Lab for her entire four years at Duke and her thesis research was recognized with honors distinction. Samantha is pictured above on graduation day with her family.
Prof. Patek delivered this short speech at the graduation event when Samantha was presented with the Rast Award: