2017
DOI: 10.1590/1982-0224-20160049
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Influence of hydrology on the fish body condition in a large subtropical floodplain

Abstract: With the objective of finding fluctuations on fish body condition in the Middle Paraná River floodplain in different hydrological scenarios, this attribute was analyzed in several trophic groups of a secondary floodplain channel and its associated lakes between 2010 and 2012. Standardized residuals generated by length-weight regressions were calculated for each species and the relative weight (Wr) of the most abundant species per group was examined. A two-way factorial ANOVA was carried out (factors: hydrology… Show more

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Cited by 6 publications
(7 citation statements)
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“…lateral connectivity variations), which produced changes in ß‐diversity of fish assemblages. These results are in line with Tejerina‐Garro and de Mérona (), Mims and Olden (), Abrial et al (), Górski, Collier, Hamilton, and Hicks (), Rabuffetti et al (), Scarabotti, Demonte, and Pouilly (), Abrial et al (), highlighting the importance of the hydrology in the structuring of fish assemblages.…”
Section: Discussionsupporting
confidence: 85%
See 1 more Smart Citation
“…lateral connectivity variations), which produced changes in ß‐diversity of fish assemblages. These results are in line with Tejerina‐Garro and de Mérona (), Mims and Olden (), Abrial et al (), Górski, Collier, Hamilton, and Hicks (), Rabuffetti et al (), Scarabotti, Demonte, and Pouilly (), Abrial et al (), highlighting the importance of the hydrology in the structuring of fish assemblages.…”
Section: Discussionsupporting
confidence: 85%
“…Its wide is 10 km in Corrientes and is gradually increasing to 40 km at the apex of the delta located near Diamante (Entre Ríos State). The difference in height is 38 m from Resistencia (Chaco) to Diamante resulting in a very low slope of 6.33 x 10 -5 (Paira, 2017). This immense floodplain consists of a mosaic anastomosis of different geomorphological units at slightly different elevations (Marchetti et al, 2013).…”
Section: Study Areamentioning
confidence: 99%
“…Here, we describe body condition as the residuals from the relationship between ln(WW) ~ln(SL) as per Abujanra et al (2009) and Rabuffetti et al (2017). A positive residual indicates an individual of good condition that weighs more than expected from the relationship between SL and WW derived from the total pooled sample whereas a negative residual indicates poor condition.…”
Section: Fish Sampling and Energetic Metricsmentioning
confidence: 99%
“…During rising waters, the floodplain becomes inundated and new habitats are connected. Many fish species (mainly herbivorous and detritivorous) take advantage of the free access to lentic floodplain environments and use them as feeding or breeding places (Junk, Soares, & Saint‐Paul, ; Lowe‐McConnel, ; Rabuffetti et al, ). When natural conditions are favourable, young migratory fishes may grow up in the floodplain until maturity and leave it when their first reproductive migration begins (Bonetto, Canon Verón, & Roldán, ).…”
Section: Introductionmentioning
confidence: 99%