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      Autentificación de lapas del género Fissurella (Mollusca: Vetigastropoda) en la costa chilena, mediante PCR-RFLP Translated title: Authentication of Fissurella species (Mollusca: Vetigastropoda), harvested in the Chilean coast, by PCR-RFLP

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          Abstract

          Las lapas, clasificadas en el género Fissurella, se explotan desde tiempos prehistóricos en la costa chilena. Las diversas especies de lapas presentan diferencias en la consistencia o dureza del músculo y en cualidades organolépticas, por ello son distintamente valoradas por los consumidores. La ausencia o desconocimiento de los caracteres morfológicos diagnósticos, en algunas presentaciones del recurso, fraudes en el etiquetado o designación y la sobreexplotación de este recurso, demanda una metodología de identificación de cada especie. Este método garantizaría el correcto etiquetado de los productos comerciales y sería de utilidad en la gestión pesquera. Así, se diseñó un protocolo de PCR-RFLP que permite la identificación de diferentes especies de Fissurella, teniendo en cuenta incongruencias entre la taxonomía actual del género y los datos genéticos. La digestión de productos de PCR, con dos enzimas de restricción específicas (HpyCH4 V y Nla III), genera patrones específicos de restricción, los cuales permitirán identificar con precisión las diversas especies en cualquier fase de su comercialización y de su ciclo biológico

          Translated abstract

          Keyhole limpets, belonging to the Fissurella genus, have been harvested along the Chilean coast since prehistoric times. Exploited species show differences in tissue consistency and organoleptic features, and so are differently appreciated by consumers. The absence of morphological diagnostic characters in some food products elaborated using limpets, fraudulent commercial labeling or designation, and the overexploitation of this marine resource, suggest the need for a species identification methodology. The method would be a tool to guarantee the correct labeling of commercial products and for future fishery management purposes. A PCR-RFLP protocol, using two restriction enzymes (HpyCH4 V and Nla III) allowed species identification within the Fissurella genus along Chilean coast, suggesting incongruence between classical taxonomy and genetic data. The specific restriction patterns are expected to be useful for species authentication in commercial products and for species identification in any phase of the life-cycle of Fissurella species

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          Most cited references17

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          Universal cytochrome b primers facilitate intraspecific studies in molluscan taxa.

          We describe the construction of amplification primers designed to target a portion of the mitochondrial cytochrome b locus in a variety of molluscan taxa. Combinations of two sets of primers successfully amplified cytochrome b from several species of gastropods, bivalves, and cephalopods. Sequence analysis of these amplified products revealed nucleotide diversity in small samples within several of these taxa. We discuss the utility of these primer sets for studies of intraspecific phylogeny in mollusks and potentially other invertebrates.
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            Use of mtDNA Direct Polymerase Chain Reaction (PCR) Sequencing and PCR−Restriction Fragment Length Polymorphism Methodologies in Species Identification of Canned Tuna

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              Early Coastal Subsistence Patterns in Central Chile: A Systematic Study of the Marine-Invertebrate Fauna from the Site of Curaumilla-1

              Curaumilla-1 presents the earliest date for Archaic coastal occupation and marine exploitation in central Chile (8,500 years B. P.). The remains of marine invertebrates from this site at Punta Curaumilla were studied. The number of present species, minimum number of individuals for 14 species, and mean sizes of two of these species were established. Recent studies have demonstrated that modern shellfish gatherers are important modifiers of rocky-intertidal communities in central Chile. Consequently, we attempt here to define the probable ecological role of past people at Punta Curaumilla as shellfish gatherers. The molluscan species present at Curaumilla-1 are much the same as those exploited at present by shellfish gatherers in central Chile. Two pulses of occupation were identified within the Archaic and Early Ceramic periods respectively. During these events it is likely that Precolumbian people may have temporarily or permanently modified sectors of the rocky intertidal at Punta Curaumilla.
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                Author and article information

                Journal
                imar
                Investigaciones marinas
                Investig. mar.
                Escuela de Ciencias del Mar. Pontificia Universidad Católica de Valparaíso (Valparaíso, , Chile )
                0717-7178
                May 2006
                : 34
                : 1
                : 113-118
                Affiliations
                [02] Santiago de Compostela orgnameUniversidad de Santiago de Compostela orgdiv1Departamento de Bioquímica y Biología Molecular España
                [01] Antofagasta orgnameUniversidad de Antofagasta orgdiv1Facultad de Recursos del Mar orgdiv2Departamento de Acuicultura Chile
                Article
                S0717-71782006000100011 S0717-7178(06)03400111
                10.4067/S0717-71782006000100011
                31ac15b7-7473-4c9c-a200-1e9c096a38c7

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 28 April 2006
                : 20 May 2005
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 17, Pages: 6
                Product

                SciELO Chile

                Categories
                NOTAS CIENTIFICAS

                keyhole limpets,Fissurella,PCR-RFLP,authentication,Chile,lapas,autentificación

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