Skeletal regeneration in the brittle star Amphiura filiformis

Czarkwiani, Anna; Ferrario, C.; Dylus, David; Sugni, Michela; Oliveri, Paola

doi:10.1186/s12983-016-0149-x

Cited by 43 publications

(134 citation statements)

References 59 publications

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“…Scale bar: 5 mm. Czarkwiani et al 2016). This mode of growth has been observed in early post-metamorphic stages (Komatsu, 1975;Komatsu et al 1979;Komatsu & Nojima, 1985;Pernet et al 2017), as well as during arm regeneration (Ben Khadra et al 2015aCzarkwiani et al 2016) or spine regeneration (Dubois & Jangoux, 1990).…”

Section: Discussionmentioning

confidence: 86%

“…; Czarkwiani et al. ). This mode of growth has been observed in early post‐metamorphic stages (Komatsu, ; Komatsu et al.…”

Section: Discussionmentioning

confidence: 97%

“…,b, ; Czarkwiani et al. ). The regeneration can be divided into three main phases: (i) the repair phase during the first hours/days post‐amputation; (ii) the early regenerative phase; and (iii) the advanced regenerative phase (Candia Carnevali & Bonasoro, ; Ben Khadra et al.…”

Section: Discussionmentioning

confidence: 99%

“…,b, ; Czarkwiani et al. ). The distalization‐intercalation process of regeneration may reflect the natural way asteroids grow, and is in accordance with the EAT and the OPR.…”

Section: Discussionmentioning

confidence: 99%

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Post‐metamorphic ontogeny of Zoroaster fulgens Thomson, 1873 (Asteroidea, Forcipulatacea)

Fau

Villier

2018

Journal of Anatomy

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The complete ontogenetic development of an asteroid skeleton has never been described formally for any species. Here, we describe in detail the post‐metamorphic ontogeny of Zoroaster fulgens Thomson, 1873. The major novelty of our work is the description of patterns of plate addition, the ontogeny of the internal ossicles, as well as the variability of ossicles according to their position along series. Seven specimens collected in the Rockall Basin (North Atlantic) were dissected with bleach and their anatomy was documented using a scanning electron microscope. The external anatomy was additionally observed on more than 30 specimens. We found that the overall structure of the skeleton does not change much between juveniles and adults, but the shape of individual ossicle changes during growth. Allometric scaling was particularly visible on the orals, ambulacrals and adambulacrals. The shape of an ossicle is more dependent of its position along the arm series than of its individual size. Many morphological features differentiate progressively during ontogeny, while others are expressed consistently among specimens. The study of this ontogenetic series allows discussing the homology between the structures present on the ossicles of Z. fulgens in particular and other forcipulatacean sea stars in general (i.e. muscles insertions and articulation areas). The new data obtained in this study provide a comprehensive framework of the anatomy and ontogeny of Z. fulgens that will help resolve taxonomic and phylogenetic controversies in the future.

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Section: Discussionmentioning

confidence: 86%

“…; Czarkwiani et al. ). This mode of growth has been observed in early post‐metamorphic stages (Komatsu, ; Komatsu et al.…”

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

“…,b, ; Czarkwiani et al. ). The distalization‐intercalation process of regeneration may reflect the natural way asteroids grow, and is in accordance with the EAT and the OPR.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Post‐metamorphic ontogeny of Zoroaster fulgens Thomson, 1873 (Asteroidea, Forcipulatacea)

Fau

Villier

2018

Journal of Anatomy

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“…[32][33][34] A number of transcription factors are expressed in the regenerating brittle star arm. [35,36] In starfish, Hox 1 is expressed in the regenerating nerve cord. [37]…”

Section: Molecular Biology Of Neuro-regeneration In Echinodermsmentioning

confidence: 99%

The Link between Autotomy and CNS Regeneration: Echinoderms as Non‐Model Species for Regenerative Biology

Byrne

2020

BioEssays

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Achieving regeneration of the central nervous system (CNS) is a major challenge for regenerative medicine. The inability of mammals to regrow a severed CNS contrasts with the amazing regenerative powers of their deuterostome kin, the echinoderms. Rapid CNS regeneration from a specialized autotomy plane in echinoderms presents a highly tractable and suitable non‐model system for regenerative biology and evolution. Starfish arm autotomy triggers mass cell migration and local proliferation, facilitating rapid CNS regeneration. Many regeneration events in nature are preceded by autotomy and there are striking parallels between autotomy and regeneration in starfish and lizards. Comparison of these systems holds promise to provide insight into regeneration deficiency in higher vertebrates and to uncover evolutionarily conserved deuterostome‐chordate regenerative processes. This will help identify mechanisms that may be present but inactive in higher vertebrates to address the problem of their poor regenerative capacities and the challenge to achieve CNS repair and regrowth.

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Morphogenesis and histogenesis during the arm regeneration in a basket star Astrocladus dofleini (Euryalida, Ophiuroidea, Echinodermata)

Okanishi

Kohtsuka

Miura

2020

Journal of Morphology

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Basket stars, that is, Ophiuroidea in Echinodermata, exhibit distinctive morphological characteristics with their complicatedly branched arms that can regenerate immediately after mutilation. Although, in brittle stars, that is, ophiuroids with nonbranched arms, the arm regeneration process following accidental trauma or autotomy have been morphologically and histologically observed in several species, few studies have so far been carried out on the regeneration of branched arms in basket stars. In this study, the developmental and morphological features of arm regeneration in Astrocladus dofleini (Gorgonocephalidae, Euryalida, Euryophiurida), one of the most common basket star species in Japanese waters, was anatomically and histologically investigated. Results clearly showed the following phases during the arm regeneration: (a) repair phase, (b) early regenerative phase, (c) intermediate regenerative phase, (d) advanced regenerative Phase I, and (e) advanced regenerative Phase II. The morphogenetic process during the arm regeneration in the basket star showed similar patterns to those of nonbranched arms observed in other ophiuroids. However, differences were also seen between the two ophiuroid types, that is, there were some developmental features specific to the basket star. In the early regenerative phase, branching of coelomic cavities was observed prior to the formation of other tissues, probably inducing the later morphogenesis of branched arms. In addition, hard skeletal ossicles form rapidly at the advanced regenerative Phase II. These developmental features may have led the evolution of bizarre morphologies seen in basket stars, probably contributing to the adaptation to shallow waters from deep‐sea habitats.

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Skeletal regeneration in the brittle star Amphiura filiformis

Cited by 43 publications

References 59 publications

Post‐metamorphic ontogeny of Zoroaster fulgens Thomson, 1873 (Asteroidea, Forcipulatacea)

Post‐metamorphic ontogeny of Zoroaster fulgens Thomson, 1873 (Asteroidea, Forcipulatacea)

The Link between Autotomy and CNS Regeneration: Echinoderms as Non‐Model Species for Regenerative Biology

Morphogenesis and histogenesis during the arm regeneration in a basket star Astrocladus dofleini (Euryalida, Ophiuroidea, Echinodermata)

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