NMR relaxometry as a potential non-invasive routine sensor for characterization of phenotype in Crassostrea gigas
| Autor: | Marc Suquet, Mireille Cambert, Armel Davenel, Stephane Pouvreau, François Mariette |
|---|---|
| Přispěvatelé: | Technologie des équipements agroalimentaires (UR TERE), Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF), Département de Physiologie Fonctionnelle des Organismes Marins, Sa, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
Relaxometry Gonad Phenotype characterization Sex identification Sexing Growth Aquatic Science CROISSANCE BIOLOGIQUE 01 natural sciences Animal science Dry weight medicine 14. Life underwater HUITRE CREUSE Shellfish CRASSOSTREA GIGAS biology 010604 marine biology & hydrobiology fungi food and beverages 04 agricultural and veterinary sciences Anatomy Pacific oyster biology.organism_classification Bivalvia PHENOTYPE CHARACTERIZATION NMR HUITRE medicine.anatomical_structure DETERMINATION DU SEXE CARACTERISATION PHENOTYPIQUE [SDE]Environmental Sciences Crassostrea gigas 040102 fisheries 0401 agriculture forestry and fisheries Crassostrea RESONANCE MAGNETIQUE NUCLEAIRE |
| Zdroj: | Aquaculture (0044-8486) (Elsevier), 2009-06, Vol. 291, N. 1-2, P. 74-77 Aquaculture Aquaculture, Elsevier, 2009, 291 (1-2, 3), p. 74-p. 77 |
| ISSN: | 0044-8486 |
| Popis: | MR imaging is the most appropriate non-invasive technique for quantifying the growth of somatic and gonad tissues and to determine sex in the Pacific oyster, Crassostrea gigas. However, this technique is too costly for field studies where oysters are used as bioindicators of environmental quality or to be applied routinely in hatcheries. We have tested the ability of low Nuclear Magnetic Resonance relaxometry, a much less expensive technique, to obtain phenotype parameters that can be used to monitor the physiological state of oysters. NMR measurements were carried out at three different periods using a low field spectrometer equipped with a 50 mm diameter probe to investigate 60 oysters in their first year of maturity, which were then dissected to measure internal shell cavity volume and dry flesh weight and to determine sex and gonad development. The NMR results showed that it was possible to determine both internal shell cavity volume and dry flesh weight in less than one minute with very high determination R-2 coefficients (0.95 and 0.94, respectively). The results showed also that it was possible to identify sex and gonad development, with success rates of 93% and 83%, respectively. For oysters with dry weight above 0.7 g, the success rate in identifying sex was 100%. Further studies are required to design an NMR probe that is appropriate for larger oysters and to improve sex discrimination and prediction of gonad development with larger study groups. (c) 2009 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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