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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

An evolutionary comparative analysis of the medusozoan (Cnidaria) exoskeleton

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Author(s):
Mendoza-Becerril, Maria A. ; Maronna, Maximiliano M. ; Pacheco, Mirian L. A. F. ; Simoes, Marcello G. ; Leme, Juliana M. ; Miranda, Lucilia S. ; Morandini, Andre C. ; Marques, Antonio C.
Total Authors: 8
Document type: Journal article
Source: Zoological Journal of the Linnean Society; v. 178, n. 2, p. 206-225, OCT 2016.
Web of Science Citations: 5
Abstract

The benthic polyp phase of Medusozoa (Staurozoa, Cubozoa, Scyphozoa, and Hydrozoa) has endoskeletal or exoskeletal support systems, but their composition, development, and evolution is poorly known. In this contribution the variation in synthesis, structure, and function of the medusozoan exoskeleton was examined. In addition, an evolutionary hypothesis for its origin and diversification is proposed for both extinct and extant medusozoans. We also critically reviewed the literature and included data from our own histological and microstructural analyses of some groups. Chitin is a characteristic component of exoskeleton in Medusozoa, functioning as support, protection, and a reserve for various ions and inorganic and organic molecules, which may persuade biomineralization, resulting in rigid biomineralized exoskeletons. Skeletogenesis in Medusozoa dates back to the Ediacaran, when potentially synergetic biotic, abiotic, and physiological processes resulted in development of rigid structures that became the exoskeleton. Of the many types of exoskeletons that evolved, the corneous (chitin-protein) exoskeleton predominates today in polyps of medusozoans, with its greatest variation and complexity in the polyps of Hydroidolina. A new type of bilayered exoskeleton in which there is an exosarc complementing the perisarc construction is here described. (AU)

FAPESP's process: 10/50174-7 - Systematics, life cycle and reproductive patterns of jellyfishes (Cnidaria: Medusozoa: Cubozoa and Scyphozoa) in the Baixada Santista (São Paulo, Brazil)
Grantee:André Carrara Morandini
Support type: BIOTA-FAPESP Program - Regular Research Grants
FAPESP's process: 09/02312-4 - Morphological reconstitution and systematic analysis of Corumbella werneri Hahn et al. 1982 (Tamengo Formation, Ediacaran, Corumbá Group), Mato Grosso do Sul, Brazil: paleoecological and taphonomical implications.
Grantee:Mírian Liza Alves Forancelli Pacheco
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 11/50242-5 - Dimensions of marine life: patterns and process of diversifications in planktonic and benthic cnidarians
Grantee:Antonio Carlos Marques
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 10/06927-0 - Biodiversity and areas of endemism of benthic hydroids (Cnidaria, Hydrozoa) from southern South America and Antarctica
Grantee:Thaís Pires Miranda
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/50484-4 - Biodiversity and distribution patterns of the Medusozoa form the South-Western Atlantic
Grantee:Antonio Carlos Marques
Support type: Regular Research Grants
FAPESP's process: 04/09961-4 - Biodiversity, evolution, endemism and conservation of the Medusozoa from the Southwestern Atlantic
Grantee:Antonio Carlos Marques
Support type: Research Projects - Thematic Grants