Dual Phase-Shifted Ipsilateral Metachrony in Americamysis bahia
| Autor: | Melissa Ruszczyk, Jeannette Yen, Donald R. Webster |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Americamysis bahia Euphausia Beat (acoustics) Plant Science Kinematics 010603 evolutionary biology 01 natural sciences Aquatic locomotion 03 medical and health sciences symbols.namesake Crustacea Animals Advance ratio Swimming biology Extremities Anatomy biology.organism_classification Biomechanical Phenomena 030104 developmental biology Amplitude symbols Strouhal number Animal Science and Zoology Euphausiacea |
| Zdroj: | Integrative and comparative biology. 61(5) |
| ISSN: | 1557-7023 |
| Popis: | SynopsiPreviously documented metachrony in euphausiids focused on one, five-paddle metachronal stroke, where contralateral pleopod pairs on the same abdominal segment beat in tandem with each other, propelling the animal forward. In contrast, the mysid shrimp Americamysis bahia’s pleopods on the same abdominal segment beat independently of each other, resulting in two, five-paddle metachronal cycles running ipsilaterally along the length of the body, 180° out of phase. The morphology, kinematics, and nondimensional measurements of efficiency are compared primarily with the one-cycle Euphausia superba to determine how the two-cycle approach alters the design and kinematics of metachrony. Pleopodal swimming in A. bahia results in only fast-forward swimming, with speeds greater than 2 BL/s (body lengths per second), and can reach speeds up to 12 BL/s, through a combination of increasing stroke amplitude, increasing beat frequency, and changing their inter-limb phase lag. Trends with Strouhal number and advance ratio suggest that the kinematics of metachrony in A. bahia are favored to achieve large normalized swimming speeds. |
| Databáze: | OpenAIRE |
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