Hydrochemical Parameters and Biometric Data of Fish Species From the Bororé, Billings Reservoir, São Paulo, Brazil

Abstract

The artisanal fishing is an important activity in Billings Reservoir (São Paulo, Brazil) and there is a paucity of biometric data about the fish in this region. Thereby, it is important to provide data about ichthyofauna that can be used for future management actions. The aim of this study was to present some data about the water quality and biometric data on fish species collected at the Bororé site (Billings Reservoir). In general, the obtained hydrochemical data raised a concern about the water quality because some parameters were above the established limit for body water class 2. A total of 170 fish were captured, corresponding to seven species and one genus. Geophagus brasiliensis was the most representative species (36%), followed by Astyanax bimaculatus (25%) and A. eigenmanniorum (20%). The hepatosomatic index (HSI) data showed differences in energy displacement between the species; the highest HSI values were observed in Hoplias malabaricus (HSImale = 1.33 ± 0.20; HSIfemale = 1.17 ± 0.82) while the smallest HSI was observed in A. fasciatus (HSImale = 0.47 ± 0.14; HSIfemale = 0.68 ± 0.35).

Fatty acid profile, omegas and lipid quality in commercial cuts of pirarucu (Arapaima gigas Schinz, 1822) cultivated in excavated tanks

“…However, there is another fraction of PUFAs, category 3, 6 and n-9, present for example in the A. gigas commercial cuts, the good HDL-cholesterol, whose function is to remove the bad LDL-cholesterol from the bloodstream and take it to be metabolized in the liver (Leite et al, 2015). The tropical fish like A. gigas are excellent suppliers of PUFAs n-3 and n-6, which are polyunsaturated lipids, so bromatological studies indicate the consumption of cooked fish to lower LDL-cholesterol by maintaining the presence of HDL-cholesterol in bloodstream (Martins & Oetterer, 2011;Hautrive et al, 2012;Franco et al, 2018;Siqueira et al, 2018).…”

Proximate composition, energy value, and lipid quality in loin in different weight classes of pirarucu (Arapaima gigas) from fish farming

“…Tropical fish are excellent suppliers of n-3 and n-6, which are polyunsaturated lipids. That is why bromatological studies indicate the consumption of cooked fish to reduce LDL-cholesterol, maintaining the presence of HDL-cholesterol in the bloodstream (Martins and Oetterer, 2011;Hautrive et al, 2012;Franco et al, 2018;Siqueira et al, 2018).…”