2009
DOI: 10.1590/s1519-69842009000300004
|View full text |Cite
|
Sign up to set email alerts
|

Effects of flooding regime on the feeding activity and body condition of piscivorous fish in the Upper Paraná River floodplain

Abstract: Flood pulses affect floodplain enrichment via the incorporation of nutrients and terrestrial biomass. As a result, they positively affect the body condition of aquatic organisms. This paper evaluates whether the absence of floods (resulting from dam control) affects the feeding activity and body condition of piscivorous fish. In addition, whether piscivores respond similarly to alterations in the flooding regime was assessed. Five piscivorous species were selected (Acestrorhynchus lacustris, Hoplias aff. malab… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
32
0
7

Year Published

2009
2009
2021
2021

Publication Types

Select...
7
1

Relationship

2
6

Authors

Journals

citations
Cited by 52 publications
(39 citation statements)
references
References 30 publications
0
32
0
7
Order By: Relevance
“…It may be highlighted that the occurrence of high water levels during summer, which has been related to the spawning success of migratory species (Godoy, 1975;Agostinho et al, 1993;Vazzoler, 1996), may be less important to recruitment of juveniles into adult stocks if the floods have short du-year 2000 corroborate this hypothesis. Studies conducted by Abujanra et al (2009) andLuz-Agostinho et al (2009) indicate that the natural alternation between dry and flood years is fundamental to these species. During dry years, species improve their nutritional conditions (reserves), which may be used in subsequent years for successful migration and spawning.…”
Section: Discussionmentioning
confidence: 94%
“…It may be highlighted that the occurrence of high water levels during summer, which has been related to the spawning success of migratory species (Godoy, 1975;Agostinho et al, 1993;Vazzoler, 1996), may be less important to recruitment of juveniles into adult stocks if the floods have short du-year 2000 corroborate this hypothesis. Studies conducted by Abujanra et al (2009) andLuz-Agostinho et al (2009) indicate that the natural alternation between dry and flood years is fundamental to these species. During dry years, species improve their nutritional conditions (reserves), which may be used in subsequent years for successful migration and spawning.…”
Section: Discussionmentioning
confidence: 94%
“…The data for river levels of the Baía River, whose fish assemblage is also analyzed in this study, were surrogated using the Paraná River level because their variation was similar to the Baía, which has a nearby and parallel course, and has surface contact with the Baía during major floods (Luz-Agostinho et al, 2009). foram similares entre os subsistemas, divergindo no período subseqüente, e que em anos com cheias incipientes ou nulas a condição nutricional foi elevada, especialmente nos subsistemas influenciados pelo represamento a montante. As correlações de Pearson e Spearman revelaram que, pelo menos parte dos atributos das cheias foram adversos para os peixes de diferentes categorias tróficas, exceto a variabilidade anual dos níveis fluviométricos, que possibilitou às espé-cies herbívoras o acesso periódico a fontes de alimento externas.…”
Section: Methodsunclassified
“…The data for river levels of the Baía River, whose fish assemblage is also analyzed in this study, were surrogated using the Paraná River level because their variation was similar to the Baía, which has a nearby and parallel course, and has surface contact with the Baía during major floods (Luz-Agostinho et al, 2009). …”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Few of these traits are associated with the trophic nature of the ichthyofauna (Luz-Agostinho et al, 2009). Some of those studies focus on the nutritional state of the fauna but are mono-specific (Gomes, Agostinho, 1997), only related to a particular trophic group (LuzAgostinho et al, 2008), or include species of a unique genus (Jepsen et al, 1999).…”
Section: Introductionmentioning
confidence: 99%