Results 101 to 110 of about 332 (151)

Photothermal characterization of thermally treated shells of Strombus Gigas

Journal de Physique IV (Proceedings), 2005
The thermal properties of the marine shells of the mollusk Strombus gigas are studied using photoacoustic techniques. In order to generate changes in the layered structure of the shells, they were thermally treated in therange from ambient temperature up to 400°C.
A. Hernández-Ayala, P. Quintana, J. J. Alvarado-Gil, D. Aldana   +3 more
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Cytochemical investigation of the digestive gland of two strombidae species (Strombus gigas and Strombus pugilis) in relation to the nutrition

Microscopy Research and Technique, 2012
AbstractStrombus gigas and Strombus pugilis are threatened species and aquaculture represents a good alternative solution to the fishing. In this study, we highlighted the intracellular digestion process in the digestive gland of two Strombidae species, S.
Volland, Jean-Marie, Gros, Olivier
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Carbohydrases of the crystalline style and hepatopancreas of Strombus gigas linné

Comparative Biochemistry and Physiology, 1966
Abstract 1. In Strombus gigas Linnecarbohydrase activity is present both in the crystalline style and in the hepatopancreas. 2. Only cellulase and maltase were detected in the crystalline style, while extracts of the hepatopancreas contained amylase, cellulase, maltase, cellobiase, α-glucosidase, β-glucosidase, sucrase, galactosidase and ...
Shiro Horiuchi, Charles E. Lane
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The relation of neurohumors to autorhythmicity of the isolated ventricle of Strombus gigas (Gastropoda prosobranchia)

Comparative Biochemistry and Physiology, 1968
Abstract 1. 1. Isolated ventricles of Strombus gigas may be made hypodynamic by long perfusion with sea water or by chilling. 2. 2. Acetylcholine will not restart ventricles made hypodynamic by either method. 3. 3. Low concentrations of acetylcholine do not have a significantly excitatory action on spontaneously beating isolated ...
R B, Hill, W N, Thibault
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Aspects of the reproductive biology of Strombus gigas

2010
Shell morphology changes relating to sexual maturity and the reproductive cycle of Strombus gigas were studied at a single site within the Barrier Reef lagoon of Belize, Central America. Monthly samples, from July 1981 to June 1983, of transverse tissue sections, through the digestive gland and gonad, were fixed for examination by light microscopy ...
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Contaminants in Queen Conch (Strombus gigas) in Vieques, Puerto Rico

Regional Studies in Marine Science, 2016
Abstract Pollution has the potential to negatively alter coastal ecosystem health, including fisheries species, through direct impacts, food web effects and habitat degradation. Vieques is an island municipality of the Commonwealth of Puerto Rico, which lies off the east coast of the main island.
David Whitall, Antares Ramos, Diane Wehner, Michael Fulton, Andrew Mason, Ed Wirth, Blaine West, Anthony Pait, Emily Pisarski, Brian Shaddrix, Lou Ann Reed   +10 more
openaire   +1 more source

Branched ?-1,4-glucan from the gastropod mollusk Strombus gigas

Chemistry of Natural Compounds, 1988
From the mantle of the Caribbean Sea gastropod molluskStrombus gigas a bioglycan containing carbohydrates (73%), protein (22%), and lipid (about 5%) components has been isolated. It has been shown by hydrolysis, periodate oxidation, and methylation that the bioglycan is a D-glucan constructed of α-1,4-bound D-glucose residues and has side chains of D ...
L. V. Mikheiskaya, V. I. Molchanova, R. G. Ovodova, V. Fernandes Santana   +3 more
openaire   +1 more source

Occurrence of Apicomplexa-like structures in the digestive gland of Strombus gigas throughout the Caribbean

Journal of Invertebrate Pathology, 2011
The queen conch, Strombus gigas, is a marine resource of ecological and economical importance in the Caribbean region. Given its importance in this region, and the critical status of most populations, the reproductive biology of this species has been studied to support management decisions.
Dalila Aldana, Aranda, Liliane, Frenkiel, Thierry, Brulé, Jorge, Montero, Erick Baqueiro, Cárdenas   +4 more
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The shell organic matrix of the crossed lamellar queen conch shell (Strombus gigas)

Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2014
In molluscs, the shell organic matrix comprises a large set of biomineral-occluded proteins, glycoproteins and polysaccharides that are secreted by the calcifying mantle epithelium, and are supposed to display several functions related to the synthesis of the shell.
Osuna-Mascaró, Antonio, Cruz-Bustos, Teresa, Benhamada, Sana, Guichard, Nathalie, Marie, Benjamin, Plasseraud, Laurent, Corneillat, Marion, Alcaraz, Gérard, Checa, Antonio, Marin, Frédéric   +9 more
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Attenuated reproduction of Strombus gigas by an Apicomplexa: Emeriidae-like parasite in the digestive gland

Journal of Invertebrate Pathology, 2012
An intense and generalized sporozoan infection was detected in every population of the queen conch, Strombus gigas through the Caribbean. In this contribution we establish the relationship between occurrences of an Apicomplexa: Emeriidae-like organism and reproductive activity at San Andres archipelago, Colombia.
Erick, Baqueiro Cardenas, Jorge, Montero, Liliane, Frenkiel, Dalila, Aldana Aranda   +3 more
openaire   +2 more sources