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dc.contributor.author Bigatti, Gregorio
dc.contributor.author Giraud Billoud, Maximiliano German
dc.contributor.author Vega, Israel Aníbal
dc.contributor.author Penchaszadeh, Pablo Enrique
dc.contributor.author Castro Vazquez, Alfredo Juan
dc.date.available 2016-12-28T14:16:24Z
dc.date.issued 2014-06
dc.identifier.citation Bigatti, Gregorio; Giraud Billoud, Maximiliano German; Vega, Israel Aníbal; Penchaszadeh, Pablo Enrique; Castro Vazquez, Alfredo Juan; Embryonic development in the Patagonian red snail Odontocymbiola magellanica (Neogastropoda: Volutidae): morphology and biochemistry; Elsevier Gmbh; Zoologischer Anzeiger; 253; 5; 6-2014; 372-381
dc.identifier.issn 0044-5231
dc.identifier.uri http://hdl.handle.net/11336/10402
dc.description.abstract Embryo morphology, feeding mechanism and changes in composition of the egg capsule content during development (intracapsular fluids and embryos) were studied in Odontocymbiola magellanica from newly spawned egg capsules to the pre-hatching juvenile stage. Changes in embryo morphology and behavior are presented, based on observations and micrographs of living specimens and scanning electron microscopy. The arrangement of velar cilia and athrocytes and shell gland location and development differed markedly from other studied caenogastropods. Embryo ingestion of intracapsular fluid was promoted by velar ciliary currents at least from the early veliger stage, while feeding by grazing on the inner membranous layer of the egg capsule was rarely observed until juveniles were about to hatch. The main growth of embryos occurred during the veliger stages. A significant nutritional investment in egg capsules, as compared with other South American volutids was observed. Nutrition from proteins seemed to predominate at the expense of a high molecular weight fraction (>220 kDa). Calcium concentration in the intracapsular fluid remained constant during development, but notably, the total intracapsular content (i.e., the amount contained in both fluid and embryos) increased 3-fold, which may be explained by extraction from the egg capsule magnesium-rich calcite cover, or alternatively, by uptake of calcium from the surrounding sea water. Ammonia, a major end-product of nitrogen metabolism in marine invertebrates, was present in both embryos and intracapsular fluid, from which it may easily diffuse to the surrounding sea water through the egg capsule wall. Our results on embryo morphology, development and biochemical changes provide useful comparative data for evolutionary and developmental studies in the Volutidae as well as in other caenogastropods.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier Gmbh
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject CAENOGASTROPODA
dc.subject ATHROCYTES
dc.subject DEVELOPMENTAL TRAITS
dc.subject EGG-CAPSULES
dc.subject EMBRYO NUTRITION
dc.subject.classification Biología del Desarrollo
dc.subject.classification Ciencias Biológicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Embryonic development in the Patagonian red snail Odontocymbiola magellanica (Neogastropoda: Volutidae): morphology and biochemistry
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-11-23T19:42:33Z
dc.journal.volume 253
dc.journal.number 5
dc.journal.pagination 372-381
dc.journal.pais Alemania
dc.journal.ciudad Berlin
dc.description.fil Fil: Bigatti, Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil Fil: Giraud Billoud, Maximiliano German. Consejo Nacional de Investigaciones Cientiíâ­ficas y Tecnicas. Centro Cientifico Tecnologico Mendoza. Instituto Histologia y Embriologia de Mendoza "dr. M. Burgos"; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Instituto de Fisiología; Argentina
dc.description.fil Fil: Vega, Israel Aníbal. Consejo Nacional de Investigaciones Cientiíâ­ficas y Tecnicas. Centro Cientifico Tecnologico Mendoza. Instituto Histologia y Embriologia de Mendoza "dr. M. Burgos"; Argentina
dc.description.fil Fil: Penchaszadeh, Pablo Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
dc.description.fil Fil: Castro Vazquez, Alfredo Juan. Consejo Nacional de Investigaciones Científicas y Tecnicas. Centro Cientifico Tecnologico Mendoza. Instituto Histologia y Embriologia de Mendoza "Dr. M. Burgos"; Argentina
dc.journal.title Zoologischer Anzeiger
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0044523114000199
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jcz.2014.03.001


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)