|Titre||Trophic opportunism of central Amazon floodplain fish|
|Type de publication||Journal Article|
|Year of Publication||2015|
|Auteurs||Mortillaro, J-M, Pouilly, M, Wach, M, Freitas, CEC, Abril, G, Meziane, T|
|Mots-clés||Amazon, fatty acids, Fish, Floodplains, Stable isotopes|
The food web of the central Amazon basin displays one of the largest discrepancies in food source utilisation versus availability for consumers. While C4 macrophytes dominate the primary producing biomass in floodplains, the food web is dominated by the use of C3 carbon sources. Amazon fish species have wide-ranging diets and show feeding flexibility in response to spatial and temporal patterns in food source availability. Fish are therefore expected to use a range of available resources. Fatty acids and stable carbon and nitrogen isotopic compositions were studied to investigate their trophic behaviour and provide a better assessment of food source utilisation by nine fish species from two Amazon floodplains.