Medium compensation in a spring-actuated system.
J Exp Biol
; 223(Pt 4)2020 02 25.
Article
em En
| MEDLINE
| ID: mdl-31988162
ABSTRACT
Mantis shrimp strikes are one of the fastest animal movements, despite their occurrence in a water medium with viscous drag. Since the strike is produced by a latch-mediated spring-actuated system and not directly driven by muscle action, we predicted that strikes performed in air would be faster than underwater as a result of reduction in the medium's drag. Using high-speed video analysis of stereotyped strikes elicited from Squilla mantis, we found the exact opposite strikes are much slower and less powerful in air than in water. S. mantis strikes in air have a similar mass and performance to latch-mediated spring-actuated jumps in locusts, suggesting a potential threshold for the energetics of a 1-2â
g limb rotating in air. Drag forces induced by the media may be a key feature in the evolution of mantis shrimp strikes and provide a potential target for probing the braking system of these extremely fast movements.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Comportamento Animal
/
Crustáceos
/
Movimento
Limite:
Animals
Idioma:
En
Revista:
J Exp Biol
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Reino Unido