Influence of eutrophication on the fatty acid profile of phospholipids in fish of different feeding habits

• Grant number: 17/15662-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2018
• End date: December 31, 2018
• Field of knowledge: Biological Sciences - Zoology - Physiology of Recent Groups
• Principal Investigator: ALINE DAL OLIO GOMES
• Grantee: Victor Hugo Marques Lorenti
• Host Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 14/16320-7 - Impacts of climate/environmental change on the fauna: an integrative approach, AP.PFPMCG.TEM

Abstract

In temperate environments, eutrophication is a process that raises nutrient levels in reservoirs and consequently increases the proliferation of cyanobacteria and chlorophytes, taxa considered to be poor in polyunsaturated fatty acids (PUFAs) such as EPA and DHA. However, a study made in a hypereutrophic reservoir located in the Metropolitan Region of São Paulo (MRSP), Billings reservoir, demonstrated high amounts of these fatty acids in carnivorous and omnivorous fish. EPA and DHA are important components of phospholipids, responsible for the regulation of the fluidity of biological membranes, a characteristic related to the degree of unsaturation of PUFAs. They also participate in reproductive processes influencing egg quality, spawning and larval survival. EPA and ARA (arachidonic acid), a PUFA of the n6 series, are important precursors of eicosanoids, a class of molecules that act as paracrine hormones and in the control of inflammation and immunity. Thus, the present study aims to investigate the influence of reservoir eutrophication on the fatty acid profile of membrane phospholipids in species of different feeding habits from another eutrophic reservoir of the MRSP, Guarapiranga reservoir. It is intended to understand if the results previously observed in the Billings reservoir can be considered as a standard in tropical eutrophic reservoirs, different from what is presented in the literature for temperate environment. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MARQUES, V. H.; MOREIRA, R. G.; GOMES, A. D.. Influence of tropical reservoirs eutrophication on the polyunsaturated fatty acid profile in Astyanax altiparanae (Pisces: Characidae). Science of The Total Environment, v. 717, MAY 15 2020. (16/07363-0, 17/15662-0, 14/16320-7, 17/11530-1)