Back to Search
Start Over
Evidence of force exchanges during the six-legged walking of the bottom-dwelling fish,Chelidonichthys lucerna
- Source :
- Journal of Experimental Zoology Part A: Ecological Genetics and Physiology. :542-547
- Publication Year :
- 2007
- Publisher :
- Wiley, 2007.
-
Abstract
- Locomotion in terrestrial vertebrates is supposed to be derived from preadaptation in bottom-dwelling fish. A few fish species have been assumed to walk on the substratum, on the basis of coordinated movements of their paired fins. However, the validity of this assumption has remained uncertain, because of a lack of evidence that their fin rays actually exert a force on the substratum. Here, we provide the first conclusive evidence that a benthic teleost fish, the gurnard, Chelidonichthys lucerna (Triglidae), exerts forces on the substratum during its temporary bottom-dwelling hexapod locomotion. This demonstration was achieved by the use of a photoelastic gel technique combined with a force calibration device. The movement patterns of the three first pairs of rays of the pectoral fins were analysed in relation to the forces exerted on the substratum, by measuring deformations of the photoelastic gel substratum produced by the rays. The rays were shown to produce a force pattern that confirmed the existence of a hexapod locomotion in a vertebrate that was consistent with body propulsion and voluntary substratum walking. J. Exp. Zool. 307A:542–547, 2007. © 2007 Wiley-Liss, Inc.
- Subjects :
- Hexapod
Fin
biology
Physiology
Ecology
Movement
Fishes
Fish species
Vertebrate
Conclusive evidence
Walking
biology.organism_classification
Biomechanical Phenomena
Triglidae
biology.animal
Genetics
Animals
Fish
Animal Science and Zoology
Molecular Biology
Ecology, Evolution, Behavior and Systematics
Subjects
Details
- ISSN :
- 19325231 and 19325223
- Database :
- OpenAIRE
- Journal :
- Journal of Experimental Zoology Part A: Ecological Genetics and Physiology
- Accession number :
- edsair.doi.dedup.....e92fb77e749a0a61d8a28c42d1e72da6