RT journal article
T1 Farming Sparus aurata (Teleostei: Sparidae) in marsh ponds: trophic characterization and trace metal accumulation
A1 Guerra-Garcia, Jose Manuel
A1 Calero Cano, Sandra
A1 Donázar Aramendía, Íñigo
A1 Giráldez, Inmaculada
A1 Morales, E.
A1 Arechavala Lopez, Pablo
A1 Cervera Currado, Juan Lucas
A2 Biología
K1 salt marsh
K1 estero
K1 extensive aquaculture
K1 stable isotopes
K1 diet
K1 trace metals
AB Considering the overexploitation of fishing on most of the world coasts, the ingestion of fish and shellfish will depend mostly on aquaculture production. Since intensive mariculture usually involves environmental impact, developing sustainable cultures is a priority. In this sense, salt marshes can provide ecosystem services and incorporate both conservation and extensive aquaculture activities. In the present study we compared gilthead seabream Sparus aurata Linnaeus, 1758 cultured in extensive and semi-intensive marsh ponds with wild conspecifics from surrounding coastal areas, using trophic characterization (diet analysis and stable isotopes) and trace metal accumulation. Stomach content analysis revealed different feeding habits among gilthead seabream from different origin. Although wild specimens had the most diverse diet, results of stable isotopes showed that extensive diet had the wider isotopic niche and revealed the highest similarities between wild and extensively cultured gilthead seabream. A similar trace element signature was also measured in wild and extensive culture, whereas the semi-intensive culture showed different concentrations for several elements. Cr, Fe and Mn showed the highest concentrations in semi-intensive cultured fish, while As and Zn showed the lowest values in this group. In any case, average values measured in both extensive and semi-intensive culture were, in general terms, below the hazardous limits provided by the standards recommended for trace metals by national and international regulations. Therefore, marsh ponds provide a suitable environment where the cultured fish, especially extensive, should be promoted.
PB Elsevier
SN 1879-0291, 0141-1136
YR 2023
FD 2023
LK http://hdl.handle.net/10498/31362
UL http://hdl.handle.net/10498/31362
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026