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Coordination of arm movement during locomotion in ophiurans
The results indicate that the neural centers of individual arms possess relative autonomy, and the dominant role in the distribution of functions between the arms is played by the center of the leading arm, which controls the activity of at least the adjacent centers. Expand
Deep-water Ophiuroidea of the northern Atlantic with descriptions of three new species and taxonomic remarks on certain genera and species
From examination of the type specimens, it is demonstrated that the six-armed species Ophiacantha anomala G.O. Sars, 1871 also includes five-armed specimens previously identified as the separate species OPHiacantha cuspidata Lyman, 1878, which is considered here as the junior synonym of O. anomalia. Expand
Types of locomotion in ophiurans
Motion pictures were taken of the locomotion of two species of ophiurans living in the Sea of Japan:Ophiura sarsi vadicoa Djakonov andAmphipholis kochii Lutken.Ophiura sarsi was found to move withExpand
Two new species of the genus Ophiuraster (Ophiurinae, Ophiuroidea, Echinodermata) from French collections and some remarks on the genus
Deux nouvelles especes du genre Ophiuraster (Ophiurinae, Ophiuroidea, Echinodermata) de la collection du Museum national d'Histoire naturelle, Paris et quelques remarques a propos du genre. DeuxExpand
Coordination of movements of the tube feet and arms of ophiurans during locomotion
The role of the tube feet in locomotion of the ophiuranAmphipholis kochii Lütken is examined. During stepping movements the anterior tube feet attach themselves to the supporting surface and at theExpand
[Coordination of arm movement during locomotion in Ophiuroidea].
Experiments suggest that each arm has an autonomous nervous centre, and coordinated activity of all arms is acheaved by an interaction of the nervous centres, which results in function distribution among the arms and in synchronization of arm movements. Expand
[Turning over in the ophiuroid Amphipholis kochii].
The reaction of turning over in the ophiuroid A. kochii Lütken begins when the ambulacral legs are detached from the substrate, and in water, turning over begins with aboral flexion of all the arms. Expand