Black Soldier Fly Larvae Rearrange under Compression

Integrative and Comparative Biology
Olga ShishkovDavid L Hu

Abstract

Thousands of black soldier larvae hatch simultaneously from eggs laid within rotting vegetation or animal carcasses. Over the next few weeks, they grow while compressed by both their surroundings and each other. When compressed, these larvae rearrange to reduce the forces upon them. How quickly can larvae rearrange, and what final state do they choose? In this experimental study, we use a universal testing machine to conduct creep tests on larvae, squeezing them to set volume fractions and measuring the time course of their reaction force. Live larvae come to equilibrium at a rate 10 times faster than dead larvae, indicating that their small movements can rearrange them faster than just settling. The relaxation of dead larvae is well described by stretched exponentials, which also characterize hierarchical self-avoiding materials such as polymers or balls of crumpled aluminum foil. The equilibrium pressures of live larvae are comparable to those of dead larvae, suggesting that such pressures are dictated by the physics of their bodies rather than their behavior. Live larvae perform fluctuations to actively maintain this equilibrium pressure. This ability to survive large pressures might have applications in the larvae-rearing i...Continue Reading

References

Dec 1, 1993·Journal of Biomechanics·N SasakiA Enyo
Oct 1, 1988·Physical Review. B, Condensed Matter·R PiazzaR Lipowsky
Aug 26, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Corey S O'HernSidney R Nagel
Mar 16, 2007·Physical Review Letters·T S MajmudarR P Behringer
Apr 27, 2011·Proceedings of the National Academy of Sciences of the United States of America·Nathan J MlotDavid L Hu
Aug 30, 2012·Nature Methods·Caroline A SchneiderKevin W Eliceiri
Oct 27, 2015·Nature Materials·Michael TennenbaumAlberto Fernandez-Nieves
Apr 5, 2016·Soft Matter·Sulisay PhonekeoDavid L Hu
Feb 7, 2019·Proceedings of the National Academy of Sciences of the United States of America·Jonathan A Michel, Peter J Yunker

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