Changes in the physico-chemical characteristics and lipid composition in sediments from productive aquaculture ponds after a short-term shrimp growth experience
1996
González-Vila, Francisco Javier | Mancha, Ángela | Almendros Martín, Gonzalo | Martín Martínez, Francisco | Río Andrade, José Carlos del | Junta de Andalucía
Institute de Recursos Naturales y Agrobiologia, CSIC, PO Box 1052. E-41080 Sevilla, Spain b Centro de Ciencias Medioambientales, CSIC, Serrano 115 dpdo, E-28006 Madrid, Spain
Afficher plus [+] Moins [-]The accumulation of biogenic elements and organic matter in sediments from selected aquaculture ponds were analyzed before and after a 6-month experiment on shrimp (Penaeus juponicus) growth with and without feed addition. Potential changes in the structure of the trophic system as a result of management practices were investigated by comparing the physico-chemical characteristics of the sediments and the relative concentration of signature organic molecules accumulated preferentially in different situations. The major compounds identified in the sedimentary lipid extracts by gas chromatography-mass spectrometry (GC-MS) include series of linear and branched alkanes, saturated and unsaturated fatty acids, alcohols, and sterols, as well as individual components such as phytol and some o-hydroxyacids. It is suggested that variable inputs from the feed, terrigenous plant material, phytoplankton and bacterial biomass are the main sources of the isolated lipids.
Afficher plus [+] Moins [-]We thank the Consejeria de Agricultura y Pesca de la Junta de Andalucia for financial support.
Afficher plus [+] Moins [-]Peer reviewed
Afficher plus [+] Moins [-]Mots clés AGROVOC
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