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Digestive Systems: Ophiuroidea*
2020The digestive system of ophiuroids is undoubtedly the simplest among echinoderms. Ophiuroids have blind guts with the mouth always situated mid-ventrally and more or less hidden by a jaw apparatus located just below. Published data pertain mainly to species belonging to the order Ophiurida. The stomach consists of a relatively flat central area and ten
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Asteroidea and Ophiuroidea: Starfish and Brittle Stars
2022Guerrini Andrea +2 more
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Madreporites of Ophiuroidea: are they phylogenetically informative?
Zoomorphology, 2016The madreporite of brittle stars is poorly studied, and the features of its structure are rarely used in the taxonomy. However, it is known that there is diversity in the madreporite structure. But are the ophiuroid madreporites phylogenetically informative?
Olga V. Ezhova +2 more
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Notes on the family ophiotrichidae (Ophiuroidea)
Annals and Magazine of Natural History, 1966(1966). Notes on the family ophiotrichidae (Ophiuroidea) Annals and Magazine of Natural History: Vol. 9, No. 106-108, pp. 637-655.
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[Types of locomotion in Ophiuroidea].
Neirofiziologiia = Neurophysiology, 1976Locomotor movements of two species of ophiura from the Sea of Japan: Ophiura sarsi vadicola Djakonov and Amphipholis kochii Lütken, were filmed. Ophiura sarsi moves by means of two symmetric pairs of arms which perform rhythmical rowing movements, the fifth arm is passive and directed backwards.
Iu I, Arshavskiĭ +4 more
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Gorgonocephalus eucnemis (Echinodermata: Ophiuroidea) and Bursal Ventilation
The Biological Bulletin, 2020The basket star Gorgonocephalus eucnemis is an aerobic organism highly dependent on dissolved oxygen in surrounding waters. Previous observations on the anatomy of Gorgonocephalus state that five pairs of ossicles (the radial shields and genital plates) regulate the position of the roof of the body disc and are responsible for flushing seawater into ...
MacKenna A H, Hainey, Richard B, Emlet
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Regeneration in Stellate Echinoderms: Crinoidea, Asteroidea and Ophiuroidea
2018Reparative regeneration is defined as the replacement of lost adult body parts and is a phenomenon widespread yet highly variable among animals. This raises the question of which key cellular and molecular mechanisms have to be implemented in order to efficiently and correctly replace entire body parts in any animal. To address this question, different
Yousra, Ben Khadra +6 more
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Arm autotomy in brittlestars (Echinodermata: Ophiuroidea)
Journal of Zoology, 1978Although ophiuroid arm shedding has long been accepted as an example of autotomy, there has been little investigation of the phenomenon to substantiate this. This paper describes the outwardly visible aspects of autotomy and the function of the internal components of the arm during detachment.
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Ophiuroidea (Echinodermata): Systematics and Japanese Fauna
2016This chapter consists of two sections, providing an overview of systematics and the Japanese fauna of Ophiuroidea (brittle stars and basket stars), the most diverse class of living Echinodermata. The first section presents their body plan and the history of systematic research, with a special emphasis on the order Euryalida as an example of well ...
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