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M. Abad
University of Santiago de Compostela
24Publications
14H-index
903Citations
Publications 24
Newest
#1J. Ojea (CIMA: Chartered Institute of Management Accountants)H-Index: 3
#2Antonio J. Pazos (University of Santiago de Compostela)H-Index: 14
Last.M. Abad (University of Santiago de Compostela)H-Index: 14
view all 7 authors...
Abstract To optimize the conditioning procedure to obtain better larvae with lower production costs, Ruditapes decussatus broodstock was conditioned at different periods during the year [October (C1), February (C2), and April (C3)] under two different controlled temperature regimes: a constant temperature (CT, 20°C) and a gradual increase in temperature from ambient to 20°C (GT). Samples (30 adult clams) were collected randomly every month from a control group and from each conditioning tank (th...
#1M. Luz Pérez-Parallé (University of Santiago de Compostela)H-Index: 8
#2Pablo Carpintero (University of Santiago de Compostela)H-Index: 8
Last.José L. Sánchez (University of Santiago de Compostela)H-Index: 9
view all 5 authors...
The clustered Hox genes play a central role in the regulation of development in bilaterian animals. In this study, we analyzed the homeobox-containing genes in a bivalve mollusc, the mussel Mytilus galloprovincialis, an unsegmented spiralian lophotrochozoan. We isolated and characterized four Hox cluster genes using the polymerase chain reaction with specific primers. Molecular alignments and phylogenetic analysis indicate that these mussel genes are homologs of the anterior group (pb ortholog),...
#1Antonio J. Pazos (University of Santiago de Compostela)H-Index: 14
#2Arturo Silva (University of Santiago de Compostela)H-Index: 4
Last.M. Abad (University of Santiago de Compostela)H-Index: 14
view all 6 authors...
The sterol composition of three different populations of Ruditapes decussatus from three localities close to each other, but where different environment conditions prevail, was investigated over a period of 14 months. Sterols of adult clams were isolated by thin layer chromatography and identified by gas chromatography/mass spectrometry. In all samples, the major sterol component was cholesterol (>40% of total sterols); other sterols identified were 24-norcholesta-5,22-dienol, 22-cis-dehydrochol...
#1Montserrat Garcia-Lavandeira (University of Santiago de Compostela)H-Index: 9
#2Arturo Silva (University of Santiago de Compostela)H-Index: 4
Last.M. Luz Pérez-Parallé (University of Santiago de Compostela)H-Index: 8
view all 6 authors...
Competent larvae of different marine bivalve species were treated with GABA and epinephrine at different concentrations and times of exposure to test the ability of the drugs to induce settlement and metamorphosis. GABA induced both settlement and metamorphosis in the mussel Mytilus galloprovincialis, the clams Venerupis pullastra and Ruditapes philippinarum and the oyster Ostrea edulis. Maximum induction of settlement (N39%) was achieved after exposure of V. pullastra larvae to 10 4 M GABA; thi...
#1M. Dolores Vázquez-Novelle (University of Santiago de Compostela)H-Index: 1
#2Antonio J. Pazos (University of Santiago de Compostela)H-Index: 14
Last.M. Luz Pérez-Parallé (University of Santiago de Compostela)H-Index: 8
view all 5 authors...
The aim of this study was to evaluate the ability of a nested PCR system to detect Salmonella senftenberg in raw oysters. The specific primers of the PCR were derived from the invA gene sequence, essential for Salmonella invasiveness into epithelial cells. First, for the extraction of DNA, four methods (guanidine isothiocyanate, E.Z.N.A. Mollusc Kit, Chelex®-100, and lysis with detergents) were compared. A nested PCR method combined with 3.5 h pre-enrichment in buffered peptone water (BPW) and D...
Homeobox genes encode a family of transcription factors that have essential roles in regulating the development of eukaryotes. Although they have been extensively studied in different phyla, relatively little is known about homeoboxcontaining genes and their function in molluscs. In this study, we used a polymerase chain reaction to investigate homeobox genes in the bivalve mollusc Pecten maximus. Four different homeobox sequences were identified; two were homologues of the non-Hox cluster gene ...
#1J. Ojea (CIMA: Chartered Institute of Management Accountants)H-Index: 3
#2Antonio J. Pazos (University of Santiago de Compostela)H-Index: 14
Last.M. Abad (University of Santiago de Compostela)H-Index: 14
view all 6 authors...
Abstract Seasonal variations in the body weight and biochemical composition of the bivalve Ruditapes decussatus were studied over a period of 15 months. Separate analyses were made of foot, mantle edge, siphons, gills, adductor muscle and gonad-visceral mass. Variations in weight, body growth, gonad growth and spawning depended on environmental conditions, especially food availability. The gametogenic cycle comprised two phases: a resting phase (November–December) and gametogenesis, including ri...
#1Antonio J. Pazos (University of Santiago de Compostela)H-Index: 14
#2Arturo Silva (University of Santiago de Compostela)H-Index: 4
Last.M. Abad (University of Santiago de Compostela)H-Index: 14
view all 7 authors...
Sterol composition and content and their seasonal variations over 18 months were investigated in adductor muscle, digestive gland and gonads of Pecten maximus. Sterols were isolated by Silicagel 60 thin layer chromatography and identified by gas chromatography/mass spectrometry. Eleven sterols were identified, with cholesterol, brassicasterol, 24-methylenecholesterol and 22-trans-dehydrocholesterol being the principal components. The same sterols were found in all three tissues independent of se...
#1Antonio J. Pazos (University of Santiago de Compostela)H-Index: 14
#2José L. Sánchez (University of Santiago de Compostela)H-Index: 9
Last.M. Abad (University of Santiago de Compostela)H-Index: 14
view all 5 authors...
Abstract Seasonal variations in lipid classes and fatty acid composition of triacylglycerols and phospholipids in the digestive gland of Pecten maximus were studied over a period of 16 months. Acylglycerols predominated (19–77% of total lipids), in accordance with the role of the digestive gland as an organ for lipid storage in scallops. Seasonal variations were mainly seen in the acylglycerol content, while phospholipids (2.5–10.0% of total lipids) and sterols (1.9–7.4% of total lipids) showed ...
#1J. OjeaH-Index: 3
#2D. MartínezH-Index: 4
Last.M. AbadH-Index: 14
view all 5 authors...
Content and distribution of glycogen in relation to the gametogenic cycle of a natural population of Ruditapes decussatus (L., 1758) located in the Baldaio lagoons (Galicia, northwestern Spain) Bivalve reproduction is associated with complex cycles of energy reserve storage. We studied the gametogenic cycle of the clam Ruditapes decussatus (L., 1758), as well as variations in its glycogen composition, using individuals from a natural population located in the Baldaio lagoons (Galicia, northweste...
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