Frontiers in Zoology, Volume (20), No (1), Year (2023-4)

Title : ( A methodological exploration to study 2D arm kinematics in Ophiuroidea (Echinodermata) )

Authors: Mona Goharimanesh , Sabine Stohr , Zahra Ghassemzadeh , Omid Mirshamsi , Dominique Adriaens ,

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Brittle stars, unlike most other echinoderms, do not use their small tube feet for locomotion but instead use their flexible arms to produce a rowing or reverse rowing movement. They are among the fastest-moving echinoderms with the ability of complex locomotory behaviors. Considering the high species diversity and variability in morphotypes, a proper understanding of intra- and interspecies variation in arm flexibility and movement is lacking. This study focuses on the exploration of the methods to investigate the variability in brittle star locomotion and individual arm use. We performed a two-dimensional (2D) image processing on horizontal movement only. The result indicated that sinuosity, disc displacement and arm angle are important parameters to interpret ophiuroid locomotion. A dedicated Python script to calculate the studied movement parameters and visualize the results applicable to all 5-armed brittle stars was developed. These results can serve as the basis for further research in robotics inspired by brittle star locomotion.


, Arm movement, Brittle star, Image processing, Locomotion
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author = {Goharimanesh, Mona and Sabine Stohr and Ghassemzadeh, Zahra and Mirshamsi, Omid and Dominique Adriaens},
title = {A methodological exploration to study 2D arm kinematics in Ophiuroidea (Echinodermata)},
journal = {Frontiers in Zoology},
year = {2023},
volume = {20},
number = {1},
month = {April},
issn = {1742-9994},
keywords = {Arm movement; Brittle star; Image processing; Locomotion},


%0 Journal Article
%T A methodological exploration to study 2D arm kinematics in Ophiuroidea (Echinodermata)
%A Goharimanesh, Mona
%A Sabine Stohr
%A Ghassemzadeh, Zahra
%A Mirshamsi, Omid
%A Dominique Adriaens
%J Frontiers in Zoology
%@ 1742-9994
%D 2023