This paper studies and compares naturally and arti cially evolved neural networks controlling the motion of an animal the anguilliform swim ming of a lamprey The swimming controller of the lamprey extensively studied and modeled by Grillner and Ekeberg is reproduced A real number Genetic Algorithm is used to de velop alternative arti cial controllers composed of neurons similar to those of the ...

This article presents a project that aims at constructing a biologically inspired amphibious snake-like robot. The robot is designed to be capable of anguilliform swimming like sea-snakes and lampreys in water and lateral undulatory locomotion like a snake on ground. Both the structure and the controller of the robot are inspired by elongate vertebrates. In particular, the locomotion of the rob...

This paper presents SIMUUN, a block-based simulation environment, which has been developed on top of Matlab/SimulinkTM, in order to facilitate research into various aspects of undulatory locomotion in biology and robotics. Simulations of snake-like mechanisms are set up in this environment by connecting customizable SIMUUN body segment modules via appropriate joint blocks, which are activated e...

The nematode Cucullanus robustus Yamaguti, 1935 (Cucullanidae) is redescribed from specimens collected from the intestine of Conger myriaster (Brevoort) (Osteichthyes) collected off the southern coast of South Korea in September 2005. Examinations of its morphology by both light and scanning electron microscopy (latter used in this species for the first time) revealed the presence of a previous...

This paper presents a block-based simulation environment, developed on top of Matlab/SimulinkTM to facilitate research into various aspects of undulatory robotic locomotion in biology and robotics, including assessing the effect of different body configurations on gait generation. Simulations of snake-like mechanisms are made in this environment by connecting customisable body segment blocks vi...

Today robotic creatures’ development has been utilized for several purposes. There have been inventions about animalliked aquatic robots, however few works were found relating to the study of full behavioral movement of aquatic animals; anguilliform, carangiform, subcarangiform and thunniform. This paper presents a study and design of a robotic fish that simulate locomotion pattern of aquatic a...

Hyaluronans (HAs) are glycosaminoglycans produced in the bodies of Anguilliform and Elopiform leptocephali, and play a role in metabolic energy. In mammals, HA synthesis-promoting substances (HASPS) up-regulate the expression of HA synthase (HAS) and increase the amount of HA in the body. In this study, Japanese eel leptocephali were fed a HASPS containing diet. We analyzed HAS1s and HAS2 expre...