Search results for "Pecten maximus"
showing 3 items of 3 documents
Allozyme variation in populations of scallops, Pecten jacobaeus (L.) and P. maximus (L.) (Bivalvia: Pectinidae), across the Almeria–Oran front
2002
Abstract The scallops Pecten jacobaeus and P. maximus have been traditionally considered as different species which shared a common ancestor some 5 Ma ago. This view has been challenged by recent reports of genetic distances based on allozymes and mitochondrial DNA which are incompatible with such a long period of isolation and are more typical of conspecific populations. To explain the slight allozyme differentiation opposed to a clear morphological distinctiveness, two main hypotheses have been proposed. One hypothesis views interpopulation allozyme differentiation as an outcome of simple population genetic processes such isolation by distance. The other considers that the intertaxa alloz…
Estudio arqueológico y arqueométrico de restos de cosméticos hallados en una píxide malacológica en Augusta Emerita (Mérida, Badajoz)
2019
En el presente artículo se da a conocer un hallazgo excepcional localizado en una de las áreas funerarias de la antigua capital de la Lusitania, Augusta Emerita. Concretamente se analizan funcional, tipológica y arqueométricamente una pixide malacológica que contenía durante el momento de su exhumación restos de su contenido. Además se aprovecha la ocasión para realizar un análisis contextual del hallazgo y se pone en relación con el fenómeno del cuidado femenino en época romana
Shell Extracts from the Marine Bivalve Pecten maximus Regulate the Synthesis of Extracellular Matrix in Primary Cultured Human Skin Fibroblasts
2014
International audience; Mollusc shells are composed of more than 95% calcium carbonate and less than 5% of an organic matrix consisting mostly of proteins, glycoproteins and polysaccharides. Previous studies have elucidated the biological activities of the shell matrices from bivalve molluscs on skin, especially on the expression of the extracellular matrix components of fibroblasts. In this work, we have investigated the potential biological activities of shell matrix components extracted from the shell of the scallop Pecten maximus on human fibroblasts in primary culture. Firstly, we demonstrated that shell matrix components had different effects on general cellular activities. Secondly, …